{"id":14,"date":"2025-12-14T20:43:14","date_gmt":"2025-12-14T12:43:14","guid":{"rendered":"http:\/\/8.210.123.186\/?p=14"},"modified":"2026-04-22T17:15:47","modified_gmt":"2026-04-22T09:15:47","slug":"%e7%ae%80%e5%8d%95%e5%ae%89%e5%8d%93%e9%80%86%e5%90%91%e5%ad%a6%e4%b9%a0","status":"publish","type":"post","link":"http:\/\/8.210.123.186\/index.php\/2025\/12\/14\/%e7%ae%80%e5%8d%95%e5%ae%89%e5%8d%93%e9%80%86%e5%90%91%e5%ad%a6%e4%b9%a0\/","title":{"rendered":"\u7b80\u5355\u5b89\u5353\u9006\u5411\u5b66\u4e60"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b&#8211;java<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/developer.mozilla.org\/zh-CN\/docs\/Learn_web_development\/Extensions\/Advanced_JavaScript_objects\/Object-oriented_programming\">\u7b80\u5355\u6982\u5ff5<\/a><br><a href=\"https:\/\/www.runoob.com\/java\/java-tutorial.html\">java\u83dc\u9e1f\u6559\u7a0b<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">jadx\u4f7f\u7528<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.cnblogs.com\/lsgxeva\/p\/13500813.html\">\u6587\u7ae0<\/a><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5feb\u6377\u952e<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u529f\u80fd<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Ctrl + Shift + F<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u5c40\u6587\u672c\u641c\u7d22<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6700\u5e38\u7528\u7684\u529f\u80fd\uff0c\u641c\u7d22\u6240\u6709\u4ee3\u7801\u4e2d\u7684\u5b57\u7b26\u4e32\u6216\u6587\u672c\u3002<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Ctrl + N<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u5c40\u7c7b\u540d\u641c\u7d22<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5feb\u901f\u67e5\u627e\u5e76\u6253\u5f00\u7279\u5b9a\u7684\u7c7b\u3002<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Ctrl + F<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5f53\u524d\u9875\u9762\u641c\u7d22<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5728\u5f53\u524d\u6253\u5f00\u7684\u6587\u4ef6\u4e2d\u67e5\u627e\u6587\u672c\u3002<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">X<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u67e5\u627e\u7528\u6cd5 (Find Usage)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u9009\u4e2d\u65b9\u6cd5\/\u5b57\u6bb5\/\u7c7b\uff0c\u6309 X \u67e5\u770b\u54ea\u4e9b\u5730\u65b9\u5f15\u7528\u4e86\u5b83\uff08\u9006\u5411\u5206\u6790\u795e\u5668\uff09\u3002<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u8df3\u8f6c\u5230\u58f0\u660e<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u9009\u4e2d\u53d8\u91cf\u6216\u65b9\u6cd5\u8c03\u7528\uff0c\u8df3\u8f6c\u5230\u5b9a\u4e49\u5b83\u7684\u4f4d\u7f6e\uff08\u7b49\u540c\u4e8e Ctrl + Click\uff09\u3002<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">N<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u91cd\u547d\u540d<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u9009\u4e2d\u6df7\u6dc6\u7684\u53d8\u91cf\/\u65b9\u6cd5\/\u7c7b\uff08\u5982 a, b, func\uff09\uff0c\u6309 N \u4fee\u6539\u4e3a\u53ef\u8bfb\u540d\u5b57\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">frida<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5206\u6790.so\u7ea7\u522b\u7684hook\uff0c\u5bf9\u6307\u5b9a\u8fdb\u7a0b\u7684so\u6a21\u5757\u8fdb\u884c\u5206\u6790\uff0c\u62e6\u622a\u548c\u8c03\u7528\u6307\u5b9a\u51fd\u65701.\u63d2\u6869\u6280\u672f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u63d2\u6869\u6280\u672f\u662f\u6307\u5c06\u989d\u5916\u7684\u4ee3\u7801\u6ce8\u5165\u7a0b\u5e8f\u4e2d\u4ee5\u6536\u96c6\u8fd0\u884c\u65f6\u7684\u4fe1\u606f\uff0c\u53ef\u5206\u4e3a\u4e24\u79cd\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(1)\u6e90\u4ee3\u7801\u63d2\u6869Source Code Instrumentation(SCI\uff09\uff1a\u989d\u5916\u4ee3\u7801\u6ce8\u5165\u5230\u7a0b\u5e8f\u6e90\u4ee3\u7801\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(2)\u4e8c\u8fdb\u5236\u63d2\u6869\uff08Binary Instrumentation\uff09\uff1a\u989d\u5916\u4ee3\u7801\u6ce8\u5165\u5230\u4e8c\u8fdb\u5236\u53ef\u6267\u884c\u6587\u4ef6\u4e2d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u57fa\u672c\u547d\u4ee4<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7528\u6cd5: frida &#91;\u9009\u9879] \u76ee\u6807  \n\n\u4f4d\u7f6e\u53c2\u6570:  \n  args                  \u989d\u5916\u53c2\u6570\u548c\/\u6216\u76ee\u6807  \n\n\u9009\u9879:  \n  -h, --help            \u663e\u793a\u6b64\u5e2e\u52a9\u4fe1\u606f\u5e76\u9000\u51fa  \n  -D ID, --device ID    \u8fde\u63a5\u5230\u6307\u5b9a ID \u7684\u8bbe\u5907  \n  -U, --usb             \u8fde\u63a5\u5230 USB \u8bbe\u5907  \n  -R, --remote          \u8fde\u63a5\u5230\u8fdc\u7a0b frida-server  \n  -H HOST, --host HOST  \u8fde\u63a5\u5230 HOST \u4e0a\u7684\u8fdc\u7a0b frida-server  \n  --certificate CERTIFICATE  \n                        \u4e0e HOST \u4f7f\u7528 TLS \u901a\u4fe1\uff0c\u5e76\u9a8c\u8bc1\u63d0\u4f9b\u7684 CERTIFICATE\uff08\u8bc1\u4e66\uff09  \n  --origin ORIGIN       \u8fde\u63a5\u5230\u8fdc\u7a0b\u670d\u52a1\u5668\u65f6\uff0c\u8bbe\u7f6e\u201cOrigin\u201d\u8bf7\u6c42\u5934\u4e3a ORIGIN  \n  --token TOKEN         \u4f7f\u7528 TOKEN \u5411 HOST \u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1  \n  --keepalive-interval INTERVAL  \n                        \u8bbe\u7f6e\u4fdd\u6d3b\u95f4\u9694\uff08\u79d2\uff09\uff0c0 \u8868\u793a\u7981\u7528\uff08\u9ed8\u8ba4\u4e3a -1\uff0c\u6839\u636e\u4f20\u8f93\u65b9\u5f0f\u81ea\u52a8\u9009\u62e9\uff09  \n  --p2p                 \u4e0e\u76ee\u6807\u5efa\u7acb\u70b9\u5bf9\u70b9\uff08peer-to-peer\uff09\u8fde\u63a5  \n  --stun-server ADDRESS  \n                        \u4f7f\u7528 --p2p \u65f6\uff0c\u8bbe\u7f6e\u8981\u4f7f\u7528\u7684 STUN \u670d\u52a1\u5668\u5730\u5740 ADDRESS  \n  --relay address,username,password,turn-{udp,tcp,tls}  \n                        \u4e3a --p2p \u6dfb\u52a0\u4e2d\u7ee7\uff08relay\uff09\u670d\u52a1\u5668  \n  -f TARGET, --file TARGET  \n                        \u751f\u6210\uff08spawn\uff09\u6587\u4ef6 TARGET\uff08\u901a\u5e38\u662f\u53ef\u6267\u884c\u6587\u4ef6\uff09  \n  -F, --attach-frontmost  \n                        \u9644\u52a0\u5230\u6700\u524d\u7aef\u5e94\u7528\u7a0b\u5e8f  \n  -n NAME, --attach-name NAME  \n                        \u9644\u52a0\u5230\u540d\u79f0\u4e3a NAME \u7684\u8fdb\u7a0b  \n  -N IDENTIFIER, --attach-identifier IDENTIFIER  \n                        \u9644\u52a0\u5230\u6807\u8bc6\u7b26\u4e3a IDENTIFIER \u7684\u8fdb\u7a0b\uff08\u5982 bundle ID\uff09  \n  -p PID, --attach-pid PID  \n                        \u9644\u52a0\u5230\u8fdb\u7a0b ID \u4e3a PID \u7684\u8fdb\u7a0b  \n  -W PATTERN, --await PATTERN  \n                        \u7b49\u5f85\u5339\u914d PATTERN \u7684\u8fdb\u7a0b\u751f\u6210  \n  --stdio {inherit,pipe}  \n                        \u751f\u6210\u8fdb\u7a0b\u65f6\u7684\u6807\u51c6\u8f93\u5165\/\u8f93\u51fa\u884c\u4e3a\uff08\u9ed8\u8ba4\u4e3a\u201cinherit\u201d\u7ee7\u627f\uff09  \n  --aux option          \u8bbe\u7f6e\u751f\u6210\u8fdb\u7a0b\u65f6\u7684\u8f85\u52a9\u9009\u9879\uff08aux option\uff09\uff0c\u4f8b\u5982 \u201cuid=(int)42\u201d\uff08\u652f\u6301\u7684\u7c7b\u578b\uff1astring, bool, int\uff09  \n  --realm {native,emulated}  \n                        \u8981\u9644\u52a0\u5230\u7684\u6267\u884c\u57df\uff08\u539f\u751f\u57df \/ \u6a21\u62df\u57df\uff09  \n  --runtime {qjs,v8}    \u8981\u4f7f\u7528\u7684\u811a\u672c\u8fd0\u884c\u65f6\u5f15\u64ce  \n  --debug               \u542f\u7528 Node.js \u517c\u5bb9\u7684\u811a\u672c\u8c03\u8bd5\u5668  \n  --squelch-crash       \u5982\u679c\u542f\u7528\uff0c\u4e0d\u4f1a\u5c06\u5d29\u6e83\u62a5\u544a\u8f93\u51fa\u5230\u63a7\u5236\u53f0  \n  -O FILE, --options-file FILE  \n                        \u5305\u542b\u989d\u5916\u547d\u4ee4\u884c\u9009\u9879\u7684\u6587\u672c\u6587\u4ef6  \n  --version             \u663e\u793a\u7a0b\u5e8f\u7248\u672c\u53f7\u5e76\u9000\u51fa  \n  -l SCRIPT, --load SCRIPT  \n                        \u52a0\u8f7d\u811a\u672c\u6587\u4ef6 SCRIPT  \n  -P PARAMETERS_JSON, --parameters PARAMETERS_JSON  \n                        \u4ee5 JSON \u683c\u5f0f\u63d0\u4f9b\u53c2\u6570\uff08\u4e0e Gadget \u76f8\u540c\uff09  \n  -C USER_CMODULE, --cmodule USER_CMODULE  \n                        \u52a0\u8f7d C \u6a21\u5757\uff08CModule\uff09 USER_CMODULE  \n  --toolchain {any,internal,external}  \n                        \u4ece\u6e90\u4ee3\u7801\u7f16\u8bd1\u65f6\u4f7f\u7528\u7684 CModule \u5de5\u5177\u94fe  \n  -c CODESHARE_URI, --codeshare CODESHARE_URI  \n                        \u52a0\u8f7d\u4ee3\u7801\u5171\u4eab URI CODESHARE_URI  \n  -e CODE, --eval CODE  \u6267\u884c\uff08evaluate\uff09\u4ee3\u7801\u7247\u6bb5 CODE  \n  -q                    \u5b89\u9759\u6a21\u5f0f\uff08\u65e0\u63d0\u793a\u7b26\uff09\uff0c\u5e76\u5728\u6267\u884c\u5b8c -l \u548c -e \u540e\u9000\u51fa  \n  -t TIMEOUT, --timeout TIMEOUT  \n                        \u5728\u5b89\u9759\u6a21\u5f0f\u4e0b\uff0c\u7b49\u5f85 TIMEOUT \u79d2\u540e\u7ec8\u6b62  \n  --pause               \u5728\u751f\u6210\u7a0b\u5e8f\u540e\uff0c\u4fdd\u6301\u4e3b\u7ebf\u7a0b\u6682\u505c\u72b6\u6001  \n  -o LOGFILE, --output LOGFILE  \n                        \u8f93\u51fa\u5230\u65e5\u5fd7\u6587\u4ef6 LOGFILE  \n  --eternalize          \u5728\u9000\u51fa\u524d\u6301\u4e45\u5316\u811a\u672c\uff08eternalize the script\uff09  \n  --exit-on-error       \u5728 SCRIPT \u4e2d\u9047\u5230\u4efb\u4f55\u5f02\u5e38\u540e\u4ee5\u4ee3\u7801 1 \u9000\u51fa  \n  --kill-on-exit        Frida \u9000\u51fa\u65f6\u6740\u6b7b\u751f\u6210\u7684\u7a0b\u5e8f  \n  --auto-perform        \u81ea\u52a8\u5c06\u8f93\u5165\u7684\u4ee3\u7801\u5305\u88c5\u5728 `Java.perform` \u4e2d\uff08\u7528\u4e8e Java \u4ea4\u4e92\uff09  \n  --auto-reload         \u542f\u7528\u5bf9\u63d0\u4f9b\u7684\u811a\u672c\u548c C \u6a21\u5757\u7684\u81ea\u52a8\u91cd\u8f7d\uff08\u9ed8\u8ba4\u5f00\u542f\uff0c\u672a\u6765\u7248\u672c\u5c06\u53d8\u4e3a\u5fc5\u9700\uff09  \n  --no-auto-reload      \u7981\u7528\u5bf9\u63d0\u4f9b\u7684\u811a\u672c\u548c C \u6a21\u5757\u7684\u81ea\u52a8\u91cd\u8f7d<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u64cd\u4f5c\u6a21\u5f0f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">frida\u63d0\u4f9b\u4e86\u4e24\u79cd\u64cd\u4f5c\u6a21\u5f0f\u6765\u6ce8\u5165\u6d41\u7a0b\uff0cattach\u9644\u52a0\u548cspawn\u751f\u6210<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>attach\uff1a\u9644\u52a0\u5230\u5df2\u7ecf\u8fd0\u884c\u7684\u8fdb\u7a0bfrida -U -p &lt;> -l script.js<\/li>\n\n\n\n<li>spawn\uff1a\u542f\u52a8\u5e76\u6682\u505c\u76ee\u6807\u8fdb\u7a0b\uff0c\u6ce8\u5165\u811a\u672c\u540e\u7ee7\u7eed\u6267\u884c<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u811a\u672c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">frida\u811a\u672c\u4f7f\u7528javascript api\u4e0e\u8fdb\u7a0b\u4ea4\u4e92<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>java\u5bf9\u8c61<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5173\u952e\u65b9\u6cd5  \nJava.perform(() =&gt; { \/* \u5b89\u5168\u6267\u884cJava\u64cd\u4f5c *\/ });  \nJava.choose(\"com.example.Class\", { \/* \u67e5\u627e\u5b9e\u4f8b *\/ });  \nJava.use(\"com.example.Class\") \/\/ \u83b7\u53d6\u7c7b\u5f15\u7528 \u7b49\u540c\u4e8eJAVA\u4e2d\u7684Class.forName() \u53cd\u5c04\u8c03\u7528  \n\/\/\u5982\u679c\u662f\u9700\u8981\u52a0\u8f7d\u5185\u90e8\u7c7b\u7684\u5316\u9700\u8981\u4f7f\u7528'$'\u7b26\u5f15\u7528\u4f8b\u5982  \njava.use(\"com.example.Class$InnerClass\")  \nJava.enumerateLoadedClasses() \/\/ \u679a\u4e3e\u5df2\u52a0\u8f7d\u7c7b  \n\n\/\/ \u793a\u4f8b\uff1aHook Activity.onCreate  \nJava.perform(() =&gt; {  \n  const Activity = Java.use(\"android.app.Activity\");  \n  Activity.onCreate.implementation = function(bundle) {  \n    console.log(\"Activity created!\");  \n    this.onCreate(bundle);  \n  };  \n});<\/code><\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>interceptor\u51fd\u6570\u62e6\u622a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5173\u952e\u65b9\u6cd5  \nInterceptor.attach(targetAddress, { \/* \u56de\u8c03 *\/ });  \nInterceptor.replace(targetAddress, replacementFunc);  \nInterceptor.detachAll();  \n\n\/\/ \u793a\u4f8b\uff1a\u62e6\u622a libc \u7684 open \u51fd\u6570  \nconst openPtr = Module.getExportByName(null, \"open\");  \nInterceptor.attach(openPtr, {  \n  onEnter: function(args) {  \n    this.path = args&#91;0].readUtf8String();  \n    console.log(`Opening file: ${this.path}`);  \n  },  \n  onLeave: function(retval) {  \n    console.log(`Returned fd: ${retval}`);  \n  }  \n});<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>module\u6a21\u5757\u64cd\u4f5c<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5173\u952e\u65b9\u6cd5  \nModule.load(\"libtarget.so\"); \/\/ \u52a8\u6001\u52a0\u8f7d  \nModule.findBaseAddress(\"libtarget.so\"); \/\/ \u67e5\u627e\u57fa\u5740  \nModule.enumerateImports(\"libtarget.so\"); \/\/ \u679a\u4e3e\u5bfc\u5165  \nModule.findExportByName(\"libc.so\", \"printf\"); \/\/ \u67e5\u627e\u5bfc\u51fa  \n\n\/\/ \u793a\u4f8b\uff1a\u626b\u63cf\u6a21\u5757\u5bfc\u51fa  \nModule.enumerateExports(\"libart.so\", {  \n  onMatch: function(exp) {  \n    if (exp.name.indexOf(\"JNI\") !== -1) {  \n      console.log(`Found JNI export: ${exp.name}`);  \n    }  \n  },  \n  onComplete: function() {}  \n});<\/code><\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li>process\u8fdb\u7a0b\u63a7\u5236<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5173\u952e\u65b9\u6cd5  \nProcess.id; \/\/ \u5f53\u524d\u8fdb\u7a0bID  \nProcess.arch; \/\/ \u67b6\u6784 arm\/arm64\/x64  \nProcess.enumerateModules(); \/\/ \u679a\u4e3e\u6a21\u5757  \nProcess.enumerateThreads(); \/\/ \u679a\u4e3e\u7ebf\u7a0b  \nProcess.getCurrentThreadId(); \/\/ \u83b7\u53d6\u5f53\u524d\u7ebf\u7a0bID  \n\n\/\/ \u793a\u4f8b\uff1a\u679a\u4e3e\u6240\u6709\u6a21\u5757  \nProcess.enumerateModules().forEach(mod =&gt; {  \n  console.log(`Module: ${mod.name} Base: ${mod.base}`);  \n});<\/code><\/pre>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li>memory\u5185\u5b58\u64cd\u4f5c<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5173\u952e\u65b9\u6cd5  \nMemory.alloc(size); \/\/ \u5206\u914d\u5185\u5b58  \nMemory.protect(address, size, protection); \/\/ \u4fee\u6539\u4fdd\u62a4  \nMemory.scan(address, size, pattern, callbacks); \/\/ \u5185\u5b58\u626b\u63cf  \nMemory.readByteArray(address, length); \/\/ \u8bfb\u53d6\u5b57\u8282\u6570\u7ec4  \n\n\/\/ \u793a\u4f8b\uff1a\u8bfb\u53d6\u5b57\u7b26\u4e32  \nconst strPtr = ptr(0x1234);  \nconsole.log(`String value: ${strPtr.readUtf8String()}`);  \n\n\/\/ \u793a\u4f8b\uff1a\u4fee\u6539\u5185\u5b58\u4fdd\u62a4  \nMemory.protect(ptr(0x4000), 4096, 'rwx');<\/code><\/pre>\n\n\n\n<ol start=\"6\" class=\"wp-block-list\">\n<li>ptr\u6307\u9488\u64cd\u4f5c<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5173\u952e\u65b9\u6cd5  \nptr(\"0x1234\"); \/\/ \u521b\u5efa\u6307\u9488  \nptr.add(offset); \/\/ \u6307\u9488\u52a0\u6cd5  \nptr.sub(offset); \/\/ \u6307\u9488\u51cf\u6cd5  \n\n\/\/ \u793a\u4f8b\uff1a\u6307\u9488\u8fd0\u7b97  \nconst base = Module.findBaseAddress(\"libtarget.so\");  \nconst targetFunc = base.add(0x1234);  \nconsole.log(`Target function at: ${targetFunc}`);<\/code><\/pre>\n\n\n\n<ol start=\"7\" class=\"wp-block-list\">\n<li>nativefunction\u8c03\u7528\u539f\u751f\u51fd\u6570<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u521b\u5efa\u539f\u751f\u51fd\u6570\u6307\u9488  \nconst openPtr = Module.getExportByName(null, \"open\");  \nconst open = new NativeFunction(openPtr, 'int', &#91;'pointer', 'int']);  \n\n\/\/ \u8c03\u7528\u539f\u751f\u51fd\u6570  \nconst path = Memory.allocUtf8String(\"\/etc\/passwd\");  \nconst fd = open(path, 0);  \nconsole.log(`File descriptor: ${fd}`);<\/code><\/pre>\n\n\n\n<ol start=\"8\" class=\"wp-block-list\">\n<li>nativecallback\u521b\u5efa\u56de\u8c03\u51fd\u6570<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u521b\u5efa\u56de\u8c03\u51fd\u6570  \nconst callback = new NativeCallback(function(arg1, arg2) {  \n  console.log(`Callback called with: ${arg1}, ${arg2}`);  \n  return 0;  \n}, 'int', &#91;'int', 'int']);  \n\n\/\/ \u8bbe\u7f6e\u56de\u8c03  \nconst setCallback = Module.getExportByName(\"libtarget.so\", \"set_callback\");  \nsetCallback(callback);<\/code><\/pre>\n\n\n\n<ol start=\"9\" class=\"wp-block-list\">\n<li>thread\u7ebf\u7a0b\u64cd\u4f5c<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5173\u952e\u65b9\u6cd5  \nThread.backtrace(context); \/\/ \u83b7\u53d6\u8c03\u7528\u6808  \nThread.sleep(seconds); \/\/ \u7ebf\u7a0b\u4f11\u7720  \n\n\/\/ \u793a\u4f8b\uff1a\u83b7\u53d6\u5f53\u524d\u7ebf\u7a0b\u8c03\u7528\u6808  \nInterceptor.attach(targetFunc, {  \n  onEnter: function(args) {  \n    console.log(\"Backtrace:\\n\" +   \n      Thread.backtrace(this.context).map(DebugSymbol.fromAddress).join(\"\\n\"));  \n  }  \n});<\/code><\/pre>\n\n\n\n<ol start=\"10\" class=\"wp-block-list\">\n<li>console\u65e5\u5fd7\u8f93\u51fa<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>console.log(\"Info message\"); \/\/ \u4fe1\u606f\u65e5\u5fd7  \nconsole.warn(\"Warning!\"); \/\/ \u8b66\u544a\u65e5\u5fd7  \nconsole.error(\"Error!\"); \/\/ \u9519\u8bef\u65e5\u5fd7  \nconsole.debug(\"Debug info\"); \/\/ \u8c03\u8bd5\u65e5\u5fd7<\/code><\/pre>\n\n\n\n<ol start=\"11\" class=\"wp-block-list\">\n<li>setimmediate\/settimeout \u5b9a\u65f6\u64cd\u4f5c<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7acb\u5373\u6267\u884c  \nsetImmediate(() =&gt; {  \n  console.log(\"This runs immediately after script load\");  \n});  \n\n\/\/ \u5ef6\u8fdf\u6267\u884c  \nsetTimeout(() =&gt; {  \n  console.log(\"This runs after 2 seconds\");  \n}, 2000);<\/code><\/pre>\n\n\n\n<ol start=\"12\" class=\"wp-block-list\">\n<li>recv\/send \u8fdb\u7a0b\u901a\u4fe1<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u811a\u672c\u4e2d\u63a5\u6536\u6d88\u606f  \nrecv(\"command\", (data) =&gt; {  \n  console.log(\"Received command:\", data.payload);  \n  send({ result: \"success\" });  \n});  \n\n\/\/ Python \u7aef\u53d1\u9001\u6d88\u606f  \nscript.post({\"type\": \"command\", \"payload\": \"start_monitoring\"})<\/code><\/pre>\n\n\n\n<ol start=\"13\" class=\"wp-block-list\">\n<li>frida\u6838\u5fc3\u5bf9\u8c61<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>Frida.heapSize; \/\/ \u83b7\u53d6\u5806\u5927\u5c0f  \nFrida.arch; \/\/ \u5f53\u524d\u67b6\u6784  \nFrida.ptrSize; \/\/ \u6307\u9488\u5927\u5c0f<\/code><\/pre>\n\n\n\n<ol start=\"14\" class=\"wp-block-list\">\n<li>stalker\u6307\u4ee4\u7ea7\u8ddf\u8e2a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u8ddf\u8e2a\u6307\u4ee4\u6d41  \nStalker.follow(threadId, {  \n  events: {  \n    call: true, \/\/ \u8ddf\u8e2a\u8c03\u7528\u6307\u4ee4  \n    ret: false  \/\/ \u4e0d\u8ddf\u8e2a\u8fd4\u56de\u6307\u4ee4  \n  },  \n  onReceive: function(events) {  \n    \/\/ \u5904\u7406\u4e8b\u4ef6  \n  }  \n});  \n\n\/\/ \u505c\u6b62\u8ddf\u8e2a  \nStalker.unfollow(threadId);<\/code><\/pre>\n\n\n\n<ol start=\"15\" class=\"wp-block-list\">\n<li>file\u6587\u4ef6\u64cd\u4f5c<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u8bfb\u5199\u6587\u4ef6  \nconst data = File.readAllBytes(\"\/path\/to\/file\");  \nFile.writeAllBytes(\"\/path\/to\/output\", new Uint8Array(&#91;0x01, 0x02]));<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">python\u63a5\u53e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u83b7\u53d6\u8fdb\u7a0b\uff0c\u6a21\u5757\uff0c\u51fd\u6570\u4fe1\u606f<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">js\u63a5\u53e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/frida.re\/docs\/javascript-api\/\">\u5b98\u65b9\u8be6\u7ec6<\/a><br>\u6587\u7ae0\uff1afrida\u5165\u95e8 <a href=\"https:\/\/bbs.kanxue.com\/thread-226846.htm\">\u5165\u95e8\uff0c\u4e00\u4e2a\u5927\u6982\u62ec\uff0c\u559c\u6b22<\/a><br><a href=\"https:\/\/www.cnblogs.com\/dhcn\/p\/18142915\">hook\u6846\u67b6<\/a><a href=\"https:\/\/blog.takake.com\/posts\/44081\/\">\u6df1\u5165\u5168\u9762<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u5b89\u5353\u6293\u5305<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.doc88.com\/p-9337876645901.html\">\u6587\u7ae0<\/a><br>\u9047\u5230socket\u7f16\u7a0b\uff0c\u65e0\u6cd5\u4ecelog\u65e5\u5fd7\u4e2d\u67e5\u770b\u5230\u4e0e\u4e4b\u901a\u8baf\u7684socket\u53d1\u9001\u548c\u8fd4\u56de\u7684\u6570\u636e\u5305\u662f\u4ec0\u4e48\uff0c\u7ed3\u5408tcpdump\u548cwireshark\u67e5\u770b<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u83b7\u5f97androidroot\u6743\u9650<\/li>\n\n\n\n<li>\u628atcpdump\u63a8\u9001\u5230android\u7cfbd\u7edf<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>adb push \/\u672c\u5730\u8def\u5f84\/tcpdump \/data\/local\/tcpdump<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>\u4fee\u6539tcpdump\u6743\u9650<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>adb shell chmod 6755 \/data\/local\/tcpdump<\/code><\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li>\u8fdb\u5165root\u6743\u9650<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>adb shell\nsu<\/code><\/pre>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li>\u8fd0\u884c\u6293\u5305<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>\/data\/local\/tcpdump -p -vv -s 0 -w \/sdcard\/tcp_capture.pcap<\/code><\/pre>\n\n\n\n<ol start=\"6\" class=\"wp-block-list\">\n<li>tcp\u8fde\u63a5\u64cd\u4f5c\uff0c\u542f\u52a8wireshark\u6253\u5f00\u6587\u4ef6\uff0c\u7b5b\u9009\u7aef\u53e3\uff0c\u4e09\u63e1\u624b\u56db\u6325\u624b\uff0c\u67e5\u770bseq\uff0cack\u8fd9\u4e9b<\/li>\n\n\n\n<li>\u7ed3\u675f\u6293\u5305\uff0c\u5bfc\u51fa<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>adb pull \/sdcard\/tcp_capture.pcap \/\u672c\u5730\u8def\u5f84<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">apk\u7ed3\u6784<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>assets\u76ee\u5f55\uff1a\u9759\u6001\u8d44\u6e90\u5b58\u653e\uff0c\u5982\u89c6\u9891\u56fe\u7247\u97f3\u9891<\/li>\n\n\n\n<li>lib\u76ee\u5f55\uff1a\u6709\u4e3b\u6d41\u624b\u673a\u7528\u7684arm64-v8a\u548c\u901a\u7528\u7684armeabi-v7a\uff0c\u672c\u6b21\u9898\u76ee\u662farm64-v8a\uff0c64\u4f4d\uff0c\u5176\u4e0b.so\u6587\u4ef6\u65f6\u52a8\u6001\u94fe\u63a5\u5e93\u6587\u4ef6<\/li>\n\n\n\n<li>meta-inf\u76ee\u5f55\uff1b\u5e94\u7528\u7b7e\u540d\u4fe1\u606f<\/li>\n\n\n\n<li>res\u76ee\u5f55\uff1bresource\uff0c\u5b58\u653e\u8d44\u6e90\u6587\u4ef6\uff0c\u5305\u62ec\u56fe\u7247\uff0c\u5b57\u7b26\u4e32\u7b49<\/li>\n\n\n\n<li>Androidmanifest.xml\u6587\u4ef6\uff1a\u5e94\u7528\u6e05\u5355\u4fe1\u606f<\/li>\n\n\n\n<li>classes.dex\u6587\u4ef6\uff1ajava\u6e90\u7801\u7f16\u8bd1\u751f\u6210\u7684java\u5b57\u8282\u7801\u6587\u4ef6\uff0capk\u8fd0\u884c\u7684\u4e3b\u8981\u903b\u8f91\uff08\u8865\u5145\u5b57\u8282\u7801\u6587\u4ef6\u662f\u5565\uff01\uff09<\/li>\n\n\n\n<li>resources.arsc\u6587\u4ef6\uff1a\u7f16\u8bd1\u540e\u7684\u4e8c\u8fdb\u5236\u8d44\u6e90\u6587\u4ef6\uff0c\u6620\u5c04\u8868\uff0c\u6620\u5c04\u8d44\u6e90\u548cida\uff0c\u901a\u8fc7r\u6587\u4ef6\u4e2d\u7684id\u53ef\u4ee5\u627e\u5230\u5bf9\u5e94\u8d44\u6e90<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u5feb\u624b\u7cfb<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u641c\u7d22__NS_sig3 \u5b57\u6bb5\u7684\u65f6\u5019\uff0c\u770b\u5230\u7684\u6587\u7ae0\u57fa\u672c\u5728\u7834\u89e3\u5feb\u624b\u7cfb\uff0c\u53bb\u4e86\u89e3\u3002<br>\u7b97\u6cd5\uff1a <a href=\"https:\/\/github.com\/sumous\/anti_sign\">\u5404\u79cd\u53cd\u7b7e\u540d\u7b97\u6cd5<\/a><a href=\"https:\/\/bbs.kanxue.com\/thread-267857.htm\">\u5feb\u624b6.8sig3\u7b97\u6cd5\u7834\u89e3<\/a><br>\u76f8\u5173\uff1a<a href=\"https:\/\/juejin.cn\/post\/7490973048242749490\">__NS_sig3\u9006\u5411\u5206\u6790\uff08\u6ca1\u7528jadx\uff0c\u7528\u7684\u5565\u770b\u4e0d\u51fa\uff09<\/a><br><a href=\"https:\/\/juejin.cn\/post\/7389913027686727692?from=search-suggest\">nssig3\u7b97\u6cd5<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">KWSecuritySDK<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u641c\u7d22__NS_sig3\u5b57\u6bb5\u7684\u65f6\u5019\uff0c\u987a\u4fbf\u641c\u4e86\u4e0b\u6ce8\u91ca\uff0c\u770b\u5230\u4e2a\uff0c\u5347\u7ea7\u6216\u8005\u63a5\u5165KWSecuritySDK\uff1a3.9.1.4+\u7248\u672c\uff0c\u4e8e\u662f\u53bb\u5bf9\u5e94\u641c\u7d22\u6b64\u4fdd\u62a4\u548c\u7834\u89e3\u539f\u7406<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fdd\u62a4\u53ef\u80fd\u6027<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u6df7\u6dc6<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a7\u5236\u6d41\u5e73\u5766\u5316\uff08OLLVM\u53d8\u4f53\uff0c\u865a\u5047\u63a7\u5236\u6d41Bogus Control Flow\uff0c\u6307\u4ee4\u66ff\u6362\uff09<\/li>\n\n\n\n<li>\u5b57\u7b26\u4e32\u52a8\u6001\u52a0\u5bc6<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">ollvm<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>cff\uff1a\u6700\u5927\u6807\u5fd7\uff0c\u628a\u539f\u672c\u7684\u5faa\u73af\u653e\u5165case<\/li>\n\n\n\n<li>bcf\uff1a\u4e0d\u4f1a\u6267\u884c\u7684\u4ee3\u7801\u5757\uff0c\u50cf\u5783\u573e\u4ee3\u7801<\/li>\n\n\n\n<li>sub\uff1a\u8ba9\u6c47\u7f16\u66f4\u590d\u6742<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u52a8\u6001<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u6297\u52a8\u6001\uff1a\u9488\u5bf9frida\uff0cxposed\u68c0\u6d4b\u5e38\u89c4\u7aef\u53e3\u548c\u8fdb\u7a0b\u540d\uff0c\u626b\u63cf\u5185\u5b58\u7279\u5f81\uff08gadgets\uff09\uff0c\u68c0\u6d4bzygisk<\/li>\n\n\n\n<li>svc\/syscall\u76f4\u63a5\u8c03\u7528\uff1a\u5185\u8054\u6c47\u7f16\uff08\uff1f\uff09\u76f4\u63a5\u7cfb\u7edf\u8c03\u7528<\/li>\n\n\n\n<li>crc\/checksum\uff1a\u81ea\u6821\u9a8c<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u73af\u5883<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8bbe\u5907id<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u901a\u4fe1\u534f\u8bae<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b7e\u540d\u53c2\u6570\uff1a\u5982sig\u7b49\u524d\u9762\u53c2\u6570\u5b57\u6bb5\u88ab\u5f15\u5165\u968f\u673a\u56e0\u5b50\u6216\u65f6\u95f4\u6233<\/li>\n\n\n\n<li>\u767d\u76d2\u52a0\u5bc6\uff1a\u767d\u76d2aes\uff08\u672b\u5c3e\u5806\u7740\u89e3\u6790\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u7834\u89e3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6587\u7ae0\u76f8\u5173<br><a href=\"https:\/\/www.freebuf.com\/articles\/web\/177190.html\">web\u6ee5\u7528SSL TLS\u7ed5\u8fc7<\/a><br><a href=\"https:\/\/www5.zzu.edu.cn\/net\/info\/1155\/1740.htm\">\u4e00\u4e2a\u4fe1\u606f\uff0c\u5173\u4e8ecve<\/a><br><a href=\"https:\/\/www.cnblogs.com\/c-x-a\/p\/18961637\">\u7ed5\u8fc7libmsaoaidsec\u68c0\u6d4bfrida<\/a><br><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/551340932\">frida\u6559\u7a0b\u52a0\u5bf9\u6297\u601d\u8def<\/a><br><a href=\"https:\/\/www.cnblogs.com\/GKLBB\/p\/19154564\">\u522b\u4eba\u7684hook\u811a\u672c\uff0c\u5305\u542b\u5b57\u7b26\u4e32\u6bd4\u8f83\u7ed5\u8fc7\uff0clua\u89e3\u5bc6\u76d1\u63a7<\/a><br><a href=\"https:\/\/tianqi.csdn.net\/68afdc8ea6db534ba2c847d0.html\">\u5b89\u5353fridaAPI<\/a><br>\u5bf9\u6297\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>frida-sever\u91cd\u547d\u540d\u4e3a\u7cfb\u7edf\u8fdb\u7a0b\u540d\uff0c\u653e\u5728\u975e\u6807\u51c6\u76ee\u5f55\uff0c\u7528\u975e\u6807\u51c6\u7aef\u53e3<\/li>\n\n\n\n<li>\u9b54\u6539\u7248frida\uff1aHLUDA\/strongR-frida\uff08\u53bb\u9664\u4e86frida\u6e90\u7801\u7279\u5f81\uff09<\/li>\n\n\n\n<li>hook\u5173\u952e\u51fd\u6570<br>\u4ece4\u8fd9\u540e\u9762\u5177\u4f53\u600e\u7684\u641e\u5f97\u771f\u770b\u4e0d\u61c2\u4e86\uff0c\u590d\u5236<\/li>\n\n\n\n<li>\u4f7f\u7528frida\u7684stalker\uff0csvc\u7cfb\u7edf\u8c03\u7528\uff0chook\u68c0\u6d4b\u5b8c\u6574\u6027\u6821\u9a8c\u51fd\u6570\uff08jni_onload\uff08\u8fd9\u4e2a\u540e\u9762\u6709\u89e3\u6790\uff09\u6216\u8005.init_array\uff09<\/li>\n<\/ol>\n\n\n\n<h1 class=\"wp-block-heading\">NDK<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">[\u7b80\u7565\u7406\u89e3\u53c2\u8003\u6587\u7ae0](https:\/\/www.geeksforgeeks.org\/android\/what-is-ndk-in-android\/ https:\/\/developer.android.google.cn\/ndk\/guides?hl=en)<br>\u8ba9\u4f60\u53ef\u4ee5\u7528c\u8bed\u8a00\u4ee3\u7801\u5728\u5b89\u5353\u4f7f\u7528<br>map\u7ed3\u6784\uff0cndk\u751f\u6210std::map<br><a href=\"https:\/\/www.runoob.com\/cplusplus\/cpp-libs-map.html\">map\u5b66\u4e60<\/a><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">java\u8c03\u7528native\u65b9\u6cd5\u6d41\u7a0b<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">JNI_OnLoad()<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JNI_OnLoad()\u7684\u4f5c\u7528\u4e3b\u8981\u6709\u51e0\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u544a\u8bc9JVM\uff0c\u8fd9\u4e2a\u5e93\u9700\u8981\u8981\u6c42\u4f7f\u7528\u7684JNI\u7248\u672c\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u6267\u884c\u521d\u59cb\u5316\u64cd\u4f5c<\/li>\n\n\n\n<li>\u5c06JavaVM\u53c2\u6570\u4fdd\u5b58\u4e3a\u5168\u5c40\u5bf9\u8c61\uff0c\u65b9\u4fbf\u4ee5\u540e\u5728\u4efb\u4f55\u5730\u65b9\u83b7\u53d6JNIEnv\u5bf9\u8c61<br>clazz\uff1a\u6307\u5b9a\u7684\u7c7b\uff0c\u5373 native \u65b9\u6cd5\u6240\u5c5e\u7684\u7c7b<br>methods\uff1a\u65b9\u6cd5\u6570\u7ec4\uff0c\u8fd9\u91cc\u9700\u8981\u4e86\u89e3\u4e00\u4e0b JNINativeMethod \u7ed3\u6784\u4f53<br>nMethods\uff1a\u65b9\u6cd5\u6570\u7ec4\u7684\u957f\u5ea6<br>native\u65b9\u6cd5\u8c03\u7528\u8fde\u63a5java\u5c42\u548c\u672c\u5730c\/c++\u5173\u952e\uff0cAndroid Runtime\uff08ART\uff09\u4f5c\u4e3aAndroid\u7cfb\u7edf\u7684\u6838\u5fc3\u8fd0\u884c\u73af\u5883\uff0c\u5176Native\u65b9\u6cd5\u8c03\u7528\u94fe\u8def\u6d89\u53caJava\u865a\u62df\u673a\u3001JNI\uff08Java Native Interface\uff09\u3001\u672c\u5730\u65b9\u6cd5\u6ce8\u518c\u3001\u6808\u5e27\u7ba1\u7406\u7b49\u591a\u4e2a\u590d\u6742\u73af\u8282\u3002\uff08\u53c2\u8003<a href=\"https:\/\/juejin.cn\/post\/7522418729439838250\">\u6587\u7ae0<\/a>\uff09<br>\u5728java\u4e2d\uff0cnative\u65b9\u6cd5\u901a\u8fc7native\u5173\u952e\u5b57\u8fdb\u884c\u58f0\u660e<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>public class NativeExample {\n    \/\/ \u58f0\u660e\u4e00\u4e2aNative\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u65e0\u53c2\u6570\u4e14\u8fd4\u56deint\u7c7b\u578b\n    public native int nativeAdd(int a, int b); \n    static {\n        \/\/ \u52a0\u8f7d\u5305\u542bNative\u65b9\u6cd5\u5b9e\u73b0\u7684\u52a8\u6001\u5e93\n        System.loadLibrary(\"native-lib\"); \n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u5904\u4ec5\u58f0\u660e\uff0c\u5177\u4f53\u903b\u8f91\u901a\u8fc7System.loadLibrary\u52a0\u8f7d\u52a8\u6001\u5e93\uff08\u90a3\u4e2alib\uff09\uff0c\u52a8\u6001\u5e93\u5305\u542b\u5bf9\u5e94native\u65b9\u6cd5\u5b9e\u73b0\uff0cSystem.loadLibrary\u4f1a\u8c03\u7528art\u52a8\u6001\u5e93\uff0cart\u901a\u8fc7dlopen\u7cfb\u7edf\u8c03\u7528\uff08linux\uff09\u4e0b\u9762\u6253\u5f00\u6307\u5b9a\u52a8\u6001\u5e93\uff0c\u6620\u5c04\u5230\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u4e2d\uff0c\u4f1a\u8fdb\u884c\uff0c\u7b26\u53f7\u89e3\u6790\uff08\u67e5\u627enative\u7684\u5b9e\u73b0\u51fd\u6570\uff0c\u5982\u52a8\u6001\u5e93\u4f9d\u8d56\u5176\u4ed6\u5e93\u7684\u51fd\u6570\uff0cart\u4f1a\u9012\u5f52&#8211;\u5f53ida\u4e00\u6837\u7684\uff0c\u4e5f\u662f\u9012\u5f52\u6d41\u7a0b\uff0c\u4f46ida\u8865\u5145\u4e86\u4e00\u4e2a\u7ebf\u6027\uff0c\u8fd9\u4e2a\u4e4b\u540e\u67e5\u8be6\u7ec6\u7684&#8211;\u52a0\u8f7d\u5e76\u89e3\u6790\uff09\uff0c\u521d\u59cb\u5316\u94a9\u5b50\u51fd\u6570\uff08\u6267\u884c\u52a8\u6001\u5e93\u4e2d\u7684\u521d\u59cb\u5316\u51fd\u6570\uff0c\u5982JNI_OnLoad\uff0c\u53ef\u7528\u4e8e\u6ce8\u518cnative\u65b9\u6cd5\uff0c\u8bbe\u7f6eJNI\u7248\u672c\u7b49\u64cd\u4f5c\uff09\u5982\u679c\u52a8\u6001\u5e93\u4e2d\u5b9a\u4e49\u4e86JNI_OnLoad\u51fd\u6570\uff0cART\u4f1a\u5728\u5e93\u52a0\u8f7d\u5b8c\u6210\u540e\u81ea\u52a8\u8c03\u7528\u5b83\u7684\u64cd\u4f5c\uff0c\u672c\u5730\u6ce8\u518c\u3002<br>\u6ce8\u518c\uff1a\u5c06\u6307\u5b9anative\u548cso\u5bf9\u5e94\u6620\u5c04\uff0c\u5206\u4e3a\u9759\u6001\u6ce8\u518c\u548c\u52a8\u6001\u6ce8\u518c\u4e24\u79cd\uff0c\u9ed8\u8ba4\u9759\u6001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9759\u6001\u6ce8\u518c\uff1a\u901a\u8fc7JNIEXPORT\u548cJNICALL\u4e24\u4e2a\u5b8f\u5b9a\u4e49\u58f0\u660e\u65b9\u6cd5\uff0c\u547d\u540d\u89c4\u5219\u4e3ajava+\u5305\u540d+\u7c7b\u540d+\u65b9\u6cd5\u540d<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Java native method\npublic native String stringFromJNI();\n\/\/ JNI method \nJNIEXPORT jstring JNICALL\nJava_com_example_jnidemo_MainActivity_stringFromJNI( JNIEnv *env, jobject instance);<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u52a8\u6001\u6ce8\u518c\uff1a\u901a\u8fc7RegisterNatives\u5b8c\u6210native\u65b9\u6cd5\u548cso\u7684\u7ed1\u5b9a<br>Java\u8c03\u7528System.loadLibrary()\u52a0\u8f7d\u4e00\u4e2a\u5e93\u7684\u65f6\u5019\uff0c\u4f1a\u9996\u5148\u5728\u5e93\u4e2d\u641c\u7d22JNI_OnLoad()\u51fd\u6570\uff0c\u5982\u679c\u8be5\u51fd\u6570\u5b58\u5728\uff0c\u5219\u6267\u884c\u5b83<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">javaVM\u4e0eJNIEnv\u5728\u8c03\u7528\u94fe\u8def<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">javaVM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">java\u865a\u62df\u673a\u5168\u5c40\u5165\u53e3\uff0c\u5f53\u672c\u5730\u7ebf\u7a0b\u9700\u8981\u8c03\u7528java\u65b9\u6cd5\u6216\u8005\u6267\u884cnative\u65b9\u6cd5\u65f6\uff0c\u9996\u5148\u8981\u901a\u8fc7javaVM\u7684AttackCurrentThread\u51fd\u6570\u5c06\u7ebf\u7a0b\u9644\u52a0\u5230java\u865a\u62df\u673a\uff0c\u83b7\u53d6\u4e0e\u4e4b\u5173\u8054\u7684jnienv\uff0c\u4e5f\u8d1f\u8d23Java\u865a\u62df\u673a\u7684\u751f\u547d\u5468\u671f\uff08\u5982\u542f\u52a8\u3001\u5173\u95ed\uff09\u3001\u7c7b\u52a0\u8f7d\u3001\u5185\u5b58\u5206\u914d\u7b49\u6838\u5fc3\u529f\u80fd\uff0c\u786e\u4fddNative\u65b9\u6cd5\u8c03\u7528\u8fc7\u7a0b\u4e2dJava\u8fd0\u884c\u73af\u5883\u7684\u7a33\u5b9a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">JNIEnv<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u63d0\u4f9b\u63a5\u53e3<br>\u7ed3\u6784\u4f53\uff0c\u7ebf\u7a0b\u76f8\u5173\u7684\u672c\u5730\u63a5\u53e3\u73af\u5883\uff0c\u63d0\u4f9b\u51fd\u6570\u6307\u9488\uff0c\u7528\u4e8e\u672c\u5730\u4ee3\u7801\u4e2d\u64cd\u4f5cjava\u5bf9\u8c61\uff0c\u8c03\u7528\u65b9\u6cd5\u3002\u590d\u5236\u7c98\u8d34\u522b\u4eba\u7684\u4f8b\u5b50\uff01\u4f8b\u5982\uff0c\u901a\u8fc7NewObject\u51fd\u6570\u521b\u5efaJava\u5bf9\u8c61\uff0cCallObjectMethod\u8c03\u7528Java\u5b9e\u4f8b\u65b9\u6cd5\uff0cGetFieldID\u83b7\u53d6Java\u5bf9\u8c61\u5b57\u6bb5ID\u7b49\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e24\u8005\u7684\u534f\u540c\u5de5\u4f5c\u673a\u5236<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JavaVM\u4e0eJNIEnv\u5728Native\u65b9\u6cd5\u8c03\u7528\u94fe\u8def\u4e2d\u7d27\u5bc6\u534f\u4f5c\u3002JavaVM\u8d1f\u8d23\u7ebf\u7a0b\u4e0e\u865a\u62df\u673a\u7684\u8fde\u63a5\u7ba1\u7406\uff0c\u800cJNIEnv\u5219\u4e13\u6ce8\u4e8e\u7ebf\u7a0b\u7ea7\u522b\u7684Java\u5bf9\u8c61\u64cd\u4f5c\u4e0e\u65b9\u6cd5\u8c03\u7528\u3002\u5f53\u672c\u5730\u7ebf\u7a0b\u8c03\u7528Native\u65b9\u6cd5\u65f6\uff0cJavaVM\u5148\u901a\u8fc7AttachCurrentThread\u4e3a\u5176\u5206\u914dJNIEnv\u5b9e\u4f8b\uff0c\u968f\u540e\u672c\u5730\u4ee3\u7801\u5229\u7528\u8be5\u5b9e\u4f8b\u8c03\u7528JNI\u63a5\u53e3\u5b8c\u6210\u4e0eJava\u5c42\u7684\u4ea4\u4e92\u3002\u8c03\u7528\u7ed3\u675f\u540e\uff0c\u82e5\u4e0d\u518d\u9700\u8981JNIEnv\u5b9e\u4f8b\uff0c\u53ef\u901a\u8fc7JavaVM\u7684DetachCurrentThread\u51fd\u6570\u5c06\u7ebf\u7a0b\u4ece\u865a\u62df\u673a\u5206\u79bb\uff0c\u91ca\u653e\u76f8\u5173\u8d44\u6e90\u3002\u8fd9\u79cd\u5206\u5de5\u6a21\u5f0f\u786e\u4fdd\u4e86\u591a\u7ebf\u7a0b\u73af\u5883\u4e0bNative\u65b9\u6cd5\u8c03\u7528\u7684\u5b89\u5168\u6027\u4e0e\u9ad8\u6548\u6027\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">java\u6808\u5e27\u548c\u672c\u5730\u6808\u5e27\u533a\u522b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u65b9\u6cd5\u8c03\u7528\u8fc7\u7a0b\u4e2d\uff0cjava\u6808\u5e27\u7531\u5c40\u90e8\u53d8\u91cf\u8868\uff0c\u64cd\u4f5c\u6570\u6808\uff0c\u52a8\u6001\u8fde\u63a5\u4fe1\u606f\uff0c\u65b9\u6cd5\u8fd4\u56de\u5730\u5740\u7b49\u90e8\u5206\u7ec4\u6210\uff0c\u5b58\u50a8\u65b9\u6cd5\u8c03\u7528\u8fc7\u7a0b\u4e2d\u7684\u4e34\u65f6\u6570\u636e\u548c\u63a7\u5236\u4fe1\u606f\uff0c\u5f53java\u65b9\u6cd5\u8c03\u7528native\u65b9\u6cd5\u65f6\uff0c\u9700\u8981\u8fdb\u884c\u6808\u5e27\u7684\u5207\u6362\u4e0e\u6570\u636e\u4f20\u9012\uff0cart\u4f1a\u9002\u914djava\u6808\u5e27\u548c\u672c\u5730\u6808\u5e27(\u4fdd\u5b58java\u6808\u5e27\u72b6\u6001\uff0c\u521b\u5efa\u672c\u5730\u6808\u5e27\uff0c\u8df3\u8f6c\u81f3\u672c\u5730\u51fd\u6570\uff0c\u6062\u590djava\u6808\u5e27)\uff0c\u8fd8\u6709\u6808\u6ea2\u51fa\u5904\u7406\uff0c\u9650\u5236\u6808\u5927\u5c0f\uff0c\u68c0\u67e5\u8fb9\u754c\uff08\u6808\u6307\u9488\u662f\u5426\u8d8a\u754c\uff09\uff0c\u5904\u7406\u5f02\u5e38\uff08art\u629b\u51fastackoverflowerror\uff0cjava\u901a\u8fc7try-catch\u6765\u6355\u83b7\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53c2\u6570\u4f20\u9012\u548c\u6570\u636e\u7c7b\u578b\u8f6c\u6362<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">java\u4e0ejni\u7684\u57fa\u672c\u7c7b\u578b\u6620\u5c04<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Java\u7c7b\u578b<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u672c\u5730\u7c7b\u578b<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u5b57\u8282(bit)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">boolean<\/td><td class=\"has-text-align-left\" data-align=\"left\">jboolean<\/td><td class=\"has-text-align-left\" data-align=\"left\">8, unsigned<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">byte<\/td><td class=\"has-text-align-left\" data-align=\"left\">jbyte<\/td><td class=\"has-text-align-left\" data-align=\"left\">8<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">char<\/td><td class=\"has-text-align-left\" data-align=\"left\">jchar<\/td><td class=\"has-text-align-left\" data-align=\"left\">16, unsigned<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">short<\/td><td class=\"has-text-align-left\" data-align=\"left\">jshort<\/td><td class=\"has-text-align-left\" data-align=\"left\">16<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">int<\/td><td class=\"has-text-align-left\" data-align=\"left\">jint<\/td><td class=\"has-text-align-left\" data-align=\"left\">32<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">long<\/td><td class=\"has-text-align-left\" data-align=\"left\">jlong<\/td><td class=\"has-text-align-left\" data-align=\"left\">64<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">float<\/td><td class=\"has-text-align-left\" data-align=\"left\">jfloat<\/td><td class=\"has-text-align-left\" data-align=\"left\">32<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">double<\/td><td class=\"has-text-align-left\" data-align=\"left\">jdouble<\/td><td class=\"has-text-align-left\" data-align=\"left\">64<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">void<\/td><td class=\"has-text-align-left\" data-align=\"left\">void<\/td><td class=\"has-text-align-left\" data-align=\"left\">n\/a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Java\u7c7b\u578b<\/th><th class=\"has-text-align-left\" data-align=\"left\">C\/C++\u7c7b\u578b<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">byte<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jbyte<\/code>\uff08\u7b49\u4ef7\u4e8e<code>char<\/code>\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">short<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jshort<\/code>\uff08\u7b49\u4ef7\u4e8e<code>short<\/code>\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">int<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jint<\/code>\uff08\u7b49\u4ef7\u4e8e<code>int<\/code>\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">long<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jlong<\/code>\uff08\u7b49\u4ef7\u4e8e<code>long long<\/code>\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">float<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jfloat<\/code>\uff08\u7b49\u4ef7\u4e8e<code>float<\/code>\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">double<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jdouble<\/code>\uff08\u7b49\u4ef7\u4e8e<code>double<\/code>\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">boolean<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jboolean<\/code>\uff08\u7b49\u4ef7\u4e8e<code>unsigned char<\/code>\uff0c0\u8868\u793a<code>false<\/code>\uff0c\u975e0\u8868\u793a<code>true<\/code>\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Object<\/td><td class=\"has-text-align-left\" data-align=\"left\"><code>jobject<\/code>\uff08\u6307\u5411Java\u5bf9\u8c61\u7684\u6307\u9488\uff09<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u6587\u7ae0\u53c2\u8003\uff1a[java\u4e0ejni\u7684\u57fa\u672c\u7c7b\u578b\u6620\u5c04](&#8220;https:\/\/blog.csdn.net\/weixin_39997400\/article\/details\/111559142?ops_request_misc=%257B%2522request%255Fid%2522%253A%25224481e6103410a895dcf2f547f4dbb183%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&amp;request_id=4481e6103410a895dcf2f547f4dbb183&amp;biz_id=0&amp;utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_ecpm_v1~rank_v31_ecpm-4-111559142-null-null.142^v102^pc_search_result_base4&amp;utm_term=Java%E4%B8%8E%E6%9C%AC%E5%9C%B0C%2FC%2B%2B%E7%9A%84%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E9%9C%80%E8%A6%81%E8%BF%9B%E8%A1%8C%E6%98%A0%E5%B0%84%E8%BD%AC%E6%8D%A2%E3%80%81&amp;spm=1018.2226.3001.4187 &#8220;)<\/td><td class=\"has-text-align-left\" data-align=\"left\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">java\u5230native\u8c03\u7528\u8f6c\u6362\u539f\u7406<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728Android runtime\uff08art\uff09\u4e2d\uff0cjava\u5230native\u7684\u8c03\u7528\u8f6c\u6362\u5b9e\u73b0\u4e86java\u4e0ec\u7684\u4ee3\u7801\u4ea4\u4e92\uff0c\u5305\u542b\u4ee5\u4e0b\u6b65\u9aa4<a href=\"https:\/\/juejin.cn\/post\/7522381707791745039?from=search-suggest\">\u6587\u7ae0<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u65b9\u6cd5\u67e5\u627e\u548c\u89e3\u6790<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u67e5\u627e\u6d41\u7a0b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">java\u8c03\u7528native\u65b9\u6cd5\u65f6\uff0c\u8981\u5728\u8fd0\u884c\u4e2d\u67e5\u627e\u5bf9\u5e94\u7684\u672c\u5730\u65b9\u6cd5\u3002\u5728art\/runtime\/jni_env.cc\u4e2d\uff0cCallVoidMethod\u7b49JNI\u8c03\u7528\u63a5\u53e3\u4f1a\u89e6\u53d1\u65b9\u6cd5\u67e5\u627e<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u5730\u65b9\u6cd5\u89e3\u6790<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u6790\u5177\u4f53\u5b9e\u73b0\uff0c\u4e86\u89e3\u6838\u5fc3\u903b\u8f91<br>\u5c1d\u8bd5\u9759\u6001\u6ce8\u518c\u52a8\u6001\u6ce8\u518c\u67e5\u627e<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">jni\u73af\u5883\u51c6\u5907<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">jnienv\u7ed3\u6784\u521d\u59cb\u5316<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">jnienv\u65f6\u4e00\u4e2a\u6307\u5411jni\u51fd\u6570\u8868\u7684\u6307\u9488\uff0c\u4e3a\u672c\u5730\u4ee3\u7801\u8bbf\u95eejava\u865a\u62df\u673a\u63d0\u4f9b\u63a5\u53e3<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5c40\u90e8\u5f15\u7528\u8868\u7ba1\u7406<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ba1\u7406\u672c\u5730\u4ee3\u7801\u4e2d\u521b\u5efa\u7684java\u5bf9\u8c61\u5f15\u7528\uff0c\u786e\u4fddjava\u5bf9\u8c61\u88ab\u6b63\u5e38\u8c03\u7528<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u6570\u4f20\u9012\u4e0e\u8f6c\u6362<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u672c\u6570\u636e\u7c7b\u578b\u4f20\u9012\uff08int\uff0cfloat\u7b49\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f4\u63a5\u8fdb\u884c\u503c\u4f20\u9012<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5bf9\u8c61\u5f15\u7528\u4f20\u9012<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7jni\u63a5\u53e3\u64cd\u4f5c\u5f15\u7528<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u5904\u7406\u5bf9\u8c61\u7c7b\u578b\u53c2\u6570\u4f20\u9012\nvoid SetupObjectArg(uint8_t* args, jobject obj) {\n    \/\/ \u5c06Java\u5bf9\u8c61\u5f15\u7528\u8f6c\u6362\u4e3aJNI\u5f15\u7528\n    if (obj == nullptr) {\n        *reinterpret_cast&lt;jobject*&gt;(args) = nullptr;\n    } else {\n        \/\/ \u521b\u5efa\u5c40\u90e8\u5f15\u7528\n        Thread* self = Thread::Current();\n        JNIEnvExt* env = self-&gt;GetJniEnv();\n        jobject local_ref = env-&gt;NewLocalRef(obj);\n        *reinterpret_cast&lt;jobject*&gt;(args) = local_ref;\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b57\u7b26\u4e32\u4e0e\u6570\u7ec4\u5904\u7406<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9700\u8981\u4e13\u95e8\u8f6c\u6362\u903b\u8f91\uff0c\u5728art\/runtime\/jni_string.cc\u548cart\/runtime\/jni_array.cc\u4e2d\uff0c\u5b9a\u4e49\u4e86\u5b57\u7b26\u4e32\u548c\u6570\u7ec4\u7684\u5904\u7406\u903b\u8f91<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5c06Java\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aC\u5b57\u7b26\u4e32\nconst char* JNIEnvExt::GetStringUTFChars(jstring string, jboolean* isCopy) {\n    if (string == nullptr) {\n        return nullptr;\n    }\n\n    \/\/ \u83b7\u53d6Java\u5b57\u7b26\u4e32\u5bf9\u8c61\n    mirror::String* str = Decode&lt;mirror::String*&gt;(string);\n\n    \/\/ \u8f6c\u6362\u4e3aUTF-8\u7f16\u7801\n    std::string utf8_str = str-&gt;ToModifiedUtf8();\n\n    \/\/ \u5206\u914d\u5185\u5b58\u5e76\u590d\u5236\u5b57\u7b26\u4e32\n    char* result = static_cast&lt;char*&gt;(malloc(utf8_str.length() + 1));\n    if (result == nullptr) {\n        return nullptr;\n    }\n\n    memcpy(result, utf8_str.c_str(), utf8_str.length() + 1);\n\n    \/\/ \u8bb0\u5f55\u5206\u914d\u7684\u5185\u5b58\uff0c\u4ee5\u4fbf\u540e\u7eed\u91ca\u653e\n    AddPendingLocalFree(result);\n\n    if (isCopy != nullptr) {\n        *isCopy = JNI_TRUE;  \/\/ \u603b\u662f\u8fd4\u56de\u526f\u672c\n    }\n\n    return result;\n}\n\n\/\/ \u91ca\u653eC\u5b57\u7b26\u4e32\nvoid JNIEnvExt::ReleaseStringUTFChars(jstring string, const char* utf) {\n    \/\/ \u67e5\u627e\u5e76\u91ca\u653e\u4e4b\u524d\u5206\u914d\u7684\u5185\u5b58\n    RemovePendingLocalFree(const_cast&lt;char*&gt;(utf));\n    free(const_cast&lt;char*&gt;(utf));\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u6808\u5e27\u8f6c\u6362\u4e0e\u8c03\u7528<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6808\u5e27\u7ed3\u6784<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728art\/runtime\/stack_frame.h\uff0c\u5b9a\u4e49\u4e86\u6808\u5e27\u7684\u57fa\u672c\u7ed3\u6784<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class StackFrame {\n public:\n    \/\/ \u6808\u5e27\u7c7b\u578b\n    enum class Type {\n        kFrameInterpreter,    \/\/ \u89e3\u91ca\u5668\u6808\u5e27\n        kFrameQuick,          \/\/ \u5feb\u901f\u7f16\u8bd1\u6808\u5e27\n        kFrameJni,            \/\/ JNI\u6808\u5e27\n        kFrameJniTransition,  \/\/ JNI\u8f6c\u6362\u6808\u5e27\n        \/\/...\u5176\u4ed6\u7c7b\u578b\n    };\n\n    \/\/ \u83b7\u53d6\u6808\u5e27\u7c7b\u578b\n    Type GetType() const;\n\n    \/\/ \u83b7\u53d6\u6808\u5e27\u5927\u5c0f\n    size_t GetSize() const;\n\n    \/\/ \u83b7\u53d6\u8c03\u7528\u8005\u6808\u5e27\n    StackFrame* GetCaller() const;\n\n    \/\/...\u5176\u4ed6\u65b9\u6cd5\n};<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6808\u5e27\u8f6c\u6362\u8fc7\u7a0b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">java\u5230native\u8c03\u7528\u9700\u8981\u8fdb\u884c\u6808\u5e27\u8f6c\u6362\uff0cart\/runtime\/jni_bridge.cc<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u6267\u884cJNI\u8c03\u7528\nvoid JniBridge(mirror::ArtMethod* method, uint32_t* args, JValue* result) {\n    Thread* self = Thread::Current();\n    JNIEnvExt* env = self-&gt;GetJniEnv();\n\n    \/\/ \u4fdd\u5b58\u5f53\u524dJava\u6808\u72b6\u6001\n    StackHandleScope&lt;1&gt; hs(self);\n    Handle&lt;mirror::Object&gt; receiver(hs.NewHandle(\n        reinterpret_cast&lt;mirror::Object*&gt;(args&#91;0])));\n\n    \/\/ \u521b\u5efaJNI\u8c03\u7528\u6808\u5e27\n    JniTransition jni_transition(self);\n\n    \/\/ \u83b7\u53d6\u672c\u5730\u65b9\u6cd5\u6307\u9488\n    void* native_method = method-&gt;GetEntryPointFromQuickCompiledCode();\n\n    \/\/ \u51c6\u5907\u8c03\u7528\u53c2\u6570\n    uint8_t* native_args = jni_transition.GetNativeArgumentBuffer();\n    SetupArgs(method, native_args, args);\n\n    \/\/ \u8c03\u7528\u672c\u5730\u65b9\u6cd5\n    typedef void (*NativeMethod)(JNIEnv*, jobject, ...);\n    NativeMethod native_fn = reinterpret_cast&lt;NativeMethod&gt;(native_method);\n\n    \/\/ \u6839\u636e\u8fd4\u56de\u7c7b\u578b\u8c03\u7528\u4e0d\u540c\u7684\u51fd\u6570\n    switch (method-&gt;GetReturnType()) {\n        case Primitive::kPrimVoid:\n            native_fn(env, receiver.Get(), native_args);\n            result-&gt;SetVoid();\n            break;\n        case Primitive::kPrimBoolean:\n            result-&gt;SetZ(native_fn(env, receiver.Get(), native_args));\n            break;\n        case Primitive::kPrimByte:\n            result-&gt;SetB(native_fn(env, receiver.Get(), native_args));\n            break;\n        \/\/...\u5176\u4ed6\u8fd4\u56de\u7c7b\u578b\u5904\u7406\n    }\n\n    \/\/ \u6062\u590dJava\u6808\u72b6\u6001\n    jni_transition.Finish();\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u8c03\u7528\u7ea6\u5b9a\u9002\u914d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u540c\u67b6\u6784\u6709\u4e0d\u540c\u8c03\u7528\u7ea6\u5b9a\uff0cart\u9700\u8981\u9002\u914d\uff0c\u5728art\/runtime\/arch\u76ee\u5f55\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ ARM\u67b6\u6784\u7684JNI\u8c03\u7528\u6865\u63a5\u51fd\u6570\nvoid art_quick_generic_jni_trampoline(uint32_t* args, JValue* result, size_t args_size) {\n    \/\/ \u83b7\u53d6\u65b9\u6cd5\u548cJNI\u73af\u5883\n    mirror::ArtMethod* method = reinterpret_cast&lt;mirror::ArtMethod*&gt;(args&#91;0]);\n    Thread* self = Thread::Current();\n    JNIEnvExt* env = self-&gt;GetJniEnv();\n\n    \/\/ \u63d0\u53d6\u53c2\u6570\n    uint8_t* native_args = &amp;args&#91;1];\n\n    \/\/ \u83b7\u53d6\u672c\u5730\u65b9\u6cd5\u6307\u9488\n    void* native_method = method-&gt;GetEntryPointFromQuickCompiledCode();\n\n    \/\/ \u8c03\u7528\u672c\u5730\u65b9\u6cd5\n    typedef void (*NativeMethod)(JNIEnv*, jobject, ...);\n    NativeMethod native_fn = reinterpret_cast&lt;NativeMethod&gt;(native_method);\n\n    \/\/ \u6839\u636e\u8fd4\u56de\u7c7b\u578b\u8c03\u7528\u4e0d\u540c\u7684\u51fd\u6570\n    \/\/...\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u672c\u5730\u65b9\u6cd5\u6267\u884c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u5730\u65b9\u6cd5\u5165\u53e3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u5730\u65b9\u6cd5\u901a\u8fc7JNI\u51fd\u6570\u8868\u63d0\u4f9b\u7684\u63a5\u53e3\u8bbf\u95eeJava\u865a\u62df\u673a\u529f\u80fd\u3002\u5728art\/runtime\/jni_env_ext.cc\u4e2d<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u521d\u59cb\u5316JNI\u51fd\u6570\u8868\nvoid JNIEnvExt::InitFunctions() {\n    functions_ = &amp;gNativeInterface;\n\n    \/\/ \u8bbe\u7f6eJNI\u51fd\u6570\u8868\u7684\u5404\u4e2a\u51fd\u6570\u6307\u9488\n    functions_-&gt;GetVersion = &amp;JNIEnvExt::GetVersion;\n    functions_-&gt;DefineClass = &amp;JNIEnvExt::DefineClass;\n    functions_-&gt;FindClass = &amp;JNIEnvExt::FindClass;\n    \/\/...\u5176\u4ed6\u51fd\u6570\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">jni\u63a5\u53e3\u5b9e\u73b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">art\/runtime\/jni\u76ee\u5f55\u4e0b<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u5730\u65b9\u6cd5\u8c03\u7528java\u4ee3\u7801<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728art\/runtime\/jni_env_ext.cc\u4e2d\uff0c\u5b9a\u4e49<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd4\u56de\u503c\u5904\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u7840\u6570\u636e\u7c7b\u578b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f4\u63a5\u672c\u5730\u8fd4\u56de\u8f6c\u6210java\u7c7b\u578b<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5bf9\u8c61\u5f15\u7528\u8fd4\u56de<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u5730\u5f15\u7528\u8f6c\u6362\u4e3ajava\u5bf9\u8c61\u5f15\u7528<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7f13\u5b58\u548c\u9884\u53d6<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">art\u9884\u5b58\u4e86\u5e38\u7528jni\u51fd\u6570\u548c\u7c7b\u5f15\u7528<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u8ffd\u8e2a\u5b89\u5353\u65b9\u6cd5\u8c03\u7528<\/h1>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.youncyb.cn\/?p=1214\n<\/div><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">smali<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">dalvik\u7684\u5bc4\u5b58\u5668\u8bed\u8a00\uff08art\u76f8\u5f53\u4e8e\u5b83\u7684\u5347\u7ea7\u7248\uff09\uff0csmali\u4ee3\u7801\u7531dex\u7ffb\u8bd1\u800c\u6765<br>\u5173\u952e\u5b57<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u540d\u79f0<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u6ce8\u91ca<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">.class<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u7c7b\u540d<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.super<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u7236\u7c7b\u540d\uff0c\u7ee7\u627f\u7684\u4e0a\u7ea7\u7c7b\u540d\u540d\u79f0<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.source<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6e90\u540d<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.field<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u53d8\u91cf<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.method<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u65b9\u6cd5\u540d<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.register<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5bc4\u5b58\u5668<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.end method<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u65b9\u6cd5\u540d\u7684\u7ed3\u675f<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">public<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u516c\u6709<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">protected<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u534a\u516c\u5f00\uff0c\u53ea\u6709\u540c\u4e00\u5bb6\u4eba\u624d\u80fd\u7528<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">private<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u79c1\u6709\uff0c\u53ea\u80fd\u81ea\u5df1\u4f7f\u7528<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.parameter<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u65b9\u6cd5\u53c2\u6570<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.prologue<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u65b9\u6cd5\u5f00\u59cb<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">.line xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u4f4d\u4e8e\u7b2cxxx\u884c<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u6570\u636e\u7c7b\u578b\u5bf9\u5e94<\/td><td class=\"has-text-align-left\" data-align=\"left\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Smali\u7c7b\u578b<\/th><th class=\"has-text-align-left\" data-align=\"left\">Java\u7c7b\u578b<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u6ce8\u91ca<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">V<\/td><td class=\"has-text-align-left\" data-align=\"left\">void<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u65e0\u8fd4\u56de\u503c<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Z<\/td><td class=\"has-text-align-left\" data-align=\"left\">boolean<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5e03\u5c14\u503c\u7c7b\u578b\uff0c\u8fd4\u56de0\u62161<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">B<\/td><td class=\"has-text-align-left\" data-align=\"left\">byte<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5b57\u8282\u7c7b\u578b\uff0c\u8fd4\u56de\u5b57\u8282<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">S<\/td><td class=\"has-text-align-left\" data-align=\"left\">short<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u77ed\u6574\u6570\u7c7b\u578b\uff0c\u8fd4\u56de\u6570\u5b57<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">C<\/td><td class=\"has-text-align-left\" data-align=\"left\">char<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5b57\u7b26\u7c7b\u578b\uff0c\u8fd4\u56de\u5b57\u7b26<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">I<\/td><td class=\"has-text-align-left\" data-align=\"left\">int<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6574\u6570\u7c7b\u578b\uff0c\u8fd4\u56de\u6570\u5b57<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">J<\/td><td class=\"has-text-align-left\" data-align=\"left\">long \uff0864\u4f4d \u9700\u89812\u4e2a\u5bc4\u5b58\u5668\u5b58\u50a8\uff09<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u957f\u6574\u6570\u7c7b\u578b\uff0c\u8fd4\u56de\u6570\u5b57<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">F<\/td><td class=\"has-text-align-left\" data-align=\"left\">float<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5355\u6d6e\u70b9\u7c7b\u578b\uff0c\u8fd4\u56de\u6570\u5b57<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">D<\/td><td class=\"has-text-align-left\" data-align=\"left\">double \uff0864\u4f4d \u9700\u89812\u4e2a\u5bc4\u5b58\u5668\u5b58\u50a8\uff09<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u53cc\u6d6e\u70b9\u7c7b\u578b\uff0c\u8fd4\u56de\u6570\u5b57<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">string<\/td><td class=\"has-text-align-left\" data-align=\"left\">String<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6587\u672c\u7c7b\u578b\uff0c\u8fd4\u56de\u5b57\u7b26\u4e32<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Lxxx\/xxx\/xxx<\/td><td class=\"has-text-align-left\" data-align=\"left\">object<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5bf9\u8c61\u7c7b\u578b\uff0c\u8fd4\u56de\u5bf9\u8c61<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u5e38\u7528\u6307\u4ee4<\/td><td class=\"has-text-align-left\" data-align=\"left\"><\/td><td class=\"has-text-align-left\" data-align=\"left\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u5173\u952e\u5b57<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u6ce8\u91ca<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">const<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u91cd\u5199\u6574\u6570\u5c5e\u6027\uff0c\u771f\u5047\u5c5e\u6027\u5185\u5bb9\uff0c\u53ea\u80fd\u662f\u6570\u5b57\u7c7b\u578b<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">const-string<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u91cd\u5199\u5b57\u7b26\u4e32\u5185\u5bb9<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">const-wide<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u91cd\u5199\u957f\u6574\u6570\u7c7b\u578b\uff0c\u591a\u7528\u4e8e\u4fee\u6539\u5230\u671f\u65f6\u95f4\u3002<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">return<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u8fd4\u56de\u6307\u4ee4<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">if-eq<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u79f0equal(a=b)\uff0c\u6bd4\u8f83\u5bc4\u5b58\u5668ab\u5185\u5bb9\uff0c\u76f8\u540c\u5219\u8df3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">if-ne<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u79f0not equal(a!=b)\uff0cab\u5185\u5bb9\u4e0d\u76f8\u540c\u5219\u8df3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">if-eqz<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u79f0equal zero(a=0)\uff0cz\u5373\u662f0\u7684\u6807\u8bb0\uff0ca\u7b49\u4e8e0\u5219\u8df3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">if-nez<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u79f0not equal zero(a!=0)\uff0ca\u4e0d\u7b49\u4e8e0\u5219\u8df3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">if-ge<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u79f0greater equal(a&gt;=b)\uff0ca\u5927\u4e8e\u6216\u7b49\u4e8e\u5219\u8df3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">if-le<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5168\u79f0little equal(a&lt;=b)\uff0ca\u5c0f\u4e8e\u6216\u7b49\u4e8e\u5219\u8df3<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">goto<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5f3a\u5236\u8df3\u5230\u6307\u5b9a\u4f4d\u7f6e<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">switch<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5206\u652f\u8df3\u8f6c\uff0c\u4e00\u822c\u4f1a\u6709\u591a\u4e2a\u5206\u652f\u7ebf\uff0c\u5e76\u6839\u636e\u6307\u4ee4\u8df3\u8f6c\u5230\u9002\u5f53\u4f4d\u7f6e<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">iget<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u83b7\u53d6\u5bc4\u5b58\u5668\u6570\u636e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"> <\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u96f6\u788e\u77e5\u8bc6<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">crc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5faa\u73af\u5197\u4f59\u6821\u9a8c\uff08CRC\uff09\u662f\u7528\u4e8e\u68c0\u6d4b\u6570\u636e\u635f\u574f\u7684\u9519\u8bef\u68c0\u6d4b\u7801\u3002\u53d1\u9001\u6570\u636e\u65f6\uff0c\u4f1a\u6839\u636e\u6570\u636e\u5185\u5bb9\u751f\u6210\u7b80\u77ed\u7684\u6821\u9a8c\u548c\uff0c\u5e76\u5c06\u5176\u4e0e\u6570\u636e\u4e00\u8d77\u53d1\u9001\u3002\u63a5\u6536\u6570\u636e\u65f6\uff0c\u5c06\u518d\u6b21\u751f\u6210\u6821\u9a8c\u548c\u5e76\u5c06\u5176\u4e0e\u53d1\u9001\u7684\u6821\u9a8c\u548c\u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u679c\u4e24\u8005\u76f8\u7b49\uff0c\u5219\u6ca1\u6709\u6570\u636e\u635f\u574f\u3002\u6240\u8ff0CRC-32\u7b97\u6cd5\u672c\u8eab\u8f6c\u6362\u53ef\u53d8\u957f\u5ea6\u5b57\u7b26\u4e32\u8f6c\u6362\u62108\u4e2a\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">app\u7684\u76d0\u503c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u5728\u5bc6\u7801\u54c8\u5e0c\u91cc\u9762\u4f7f\u7528\uff0c\u6dfb\u52a0\u76d0\u503c\uff0c\u662f\u6bcf\u4e2a\u5bc6\u7801\u53c8\u5ea6\u7684\u7684\u54c8\u5e0c\u503c\uff0c\u53ef\u4ee5\u9632\u6b62\u5f69\u8679\u8868\u653b\u51fb\u548c\u54c8\u5e0c\u78b0\u649e\uff0c<br>\u521b\u5efa\u548c\u5e94\u7528<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>  #\u521b\u5efa\n  import os\n  salt = os.urandom(16)\n  #\u5e94\u7528\n  import hashlib\n  hashed_password=hashlib.sha256(salt+password.encode()).hexdigest()<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">md5\u7b97\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">MD5\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5176\u5168\u79f0\u662fMessage-Digest Algorithm 5\uff0c\u901a\u5e38\u88ab\u79f0\u4e3a\u4fe1\u606f\u6458\u8981\u7b97\u6cd5\uff0c\u6240\u8c13\u7684\u4fe1\u606f\u6458\u8981\u5c31\u662f\u628a\u660e\u6587\u5185\u5bb9\u6309\u4e00\u5b9a\u89c4\u5219\u751f\u6210\u4e00\u6bb5\u54c8\u5e0c\uff08hash\uff09\u503c\uff0c\u5373\u5f97\u5230\u8fd9\u6bb5\u660e\u6587\u5185\u5bb9\u7684\u4fe1\u606f\u6458\u8981\u3002\u5229\u7528MD5\u53ef\u4ee5\u57fa\u4e8e\u4efb\u610f\u957f\u5ea6\u7684\u660e\u6587\u5b57\u7b26\u4e32\u751f\u6210128\u4f4d\u7684\u54c8\u5e0c\u503c\uff0c\u7ed3\u679c\u552f\u4e00\u4e14\u4e0d\u53ef\u9006\uff0c\u56e0\u6b64MD5\u7ecf\u5e38\u88ab\u7528\u4e8e\u9632\u6b62\u4fe1\u606f\u88ab\u7be1\u6539\u3001\u6570\u5b57\u7b7e\u540d\u3001\u4ee5\u53ca\u5bf9\u660e\u6587\u8fdb\u884c\u52a0\u5bc6\u7b49\u573a\u666f\u3002 KwaiSign sig3 = getSig3(value, strEncodedPath);<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u767d\u76d2aes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5408\u5e76key\u548csbox\uff0c\u8ba9\u5bc6\u94a5\u6210\u4e3a\u7ed3\u6784\u4e00\u90e8\u5206\uff0c\u52a0\u5165\u968f\u673a\u53cc\u5c04\u53d8\u6362<br>\u89e3\u51b3\uff1aDCA,BGE,unicorn\u6a21\u62df<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Java\u5e8f\u5217\u5316\uff1a\u5c31\u662f\u6307\u628aJava\u5bf9\u8c61\u8f6c\u6362\u4e3a\u5b57\u8282\u5e8f\u5217\u7684\u8fc7\u7a0b<br>Java\u53cd\u5e8f\u5217\u5316\uff1a\u5c31\u662f\u6307\u628a\u5b57\u8282\u5e8f\u5217\u6062\u590d\u4e3aJava\u5bf9\u8c61\u7684\u8fc7\u7a0b\u3002<br>\u5e8f\u5217\u5316\uff1a\u5728\u4f20\u9012\u548c\u4fdd\u5b58\u5bf9\u8c61\u65f6.\u4fdd\u8bc1\u5bf9\u8c61\u7684\u5b8c\u6574\u6027\u548c\u53ef\u4f20\u9012\u6027\u3002\u5bf9\u8c61\u8f6c\u6362\u4e3a\u6709\u5e8f\u5b57\u8282\u6d41,\u4ee5\u4fbf\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93\u6216\u8005\u4fdd\u5b58\u5728\u672c\u5730\u6587\u4ef6\u4e2d\u3002<br>\u53cd\u5e8f\u5217\u5316\uff1a\u6839\u636e\u5b57\u8282\u6d41\u4e2d\u4fdd\u5b58\u7684\u5bf9\u8c61\u72b6\u6001\u53ca\u63cf\u8ff0\u4fe1\u606f\uff0c\u901a\u8fc7\u53cd\u5e8f\u5217\u5316\u91cd\u5efa\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">json\/xml\u7684\u6570\u636e\u4f20\u9012<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6570\u636e\u4f20\u8f93(\u4e5f\u53ef\u79f0\u4e3a\u7f51\u7edc\u4f20\u8f93)\u524d\uff0c\u5148\u901a\u8fc7\u5e8f\u5217\u5316\u5de5\u5177\u7c7b\u5c06Java\u5bf9\u8c61\u5e8f\u5217\u5316\u4e3ajson\/xml\u6587\u4ef6\u3002<br>\u5728\u6570\u636e\u4f20\u8f93(\u4e5f\u53ef\u79f0\u4e3a\u7f51\u7edc\u4f20\u8f93)\u540e\uff0c\u518d\u5c06json\/xml\u6587\u4ef6\u53cd\u5e8f\u5217\u5316\u4e3a\u5bf9\u5e94\u8bed\u8a00\u7684\u5bf9\u8c61<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9e\u73b0\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u7684\u4e09\u79cd\u5b9e\u73b0<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\">Student\u7c7b\u5b9e\u73b0\u4e86Serializable\u63a5\u53e3<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">ObjectOutputStream\u91c7\u7528\u9ed8\u8ba4\u7684\u5e8f\u5217\u5316\u65b9\u5f0f\uff0c\u5bf9Student\u5bf9\u8c61\u7684\u975etransient\u7684\u5b9e\u4f8b\u53d8\u91cf\u8fdb\u884c\u5e8f\u5217\u5316\u3002<br>ObjcetInputStream\u91c7\u7528\u9ed8\u8ba4\u7684\u53cd\u5e8f\u5217\u5316\u65b9\u5f0f\uff0c\u5bf9Student\u5bf9\u8c61\u7684\u975etransient\u7684\u5b9e\u4f8b\u53d8\u91cf\u8fdb\u884c\u53cd\u5e8f\u5217\u5316\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Student\u7c7b\u5b9e\u73b0\u4e86Serializable\u63a5\u53e3\uff0c\u5e76\u4e14\u8fd8\u5b9a\u4e49\u4e86readObject(ObjectInputStream in)\u548cwriteObject(ObjectOutputSteam out)\u3002<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ObjectOutputStream\u8c03\u7528Student\u5bf9\u8c61\u7684writeObject(ObjectOutputStream out)\u7684\u65b9\u6cd5\u8fdb\u884c\u5e8f\u5217\u5316\u3002<br>ObjectInputStream\u4f1a\u8c03\u7528Student\u5bf9\u8c61\u7684readObject(ObjectInputStream in)\u7684\u65b9\u6cd5\u8fdb\u884c\u53cd\u5e8f\u5217\u5316\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Student\u7c7b\u5b9e\u73b0\u4e86Externalnalizable\u63a5\u53e3\uff0c\u4e14Student\u7c7b\u5fc5\u987b\u5b9e\u73b0readExternal(ObjectInput in)\u548cwriteExternal(ObjectOutput out)\u65b9\u6cd5<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">ObjectOutputStream\u8c03\u7528Student\u5bf9\u8c61\u7684writeExternal(ObjectOutput out))\u7684\u65b9\u6cd5\u8fdb\u884c\u5e8f\u5217\u5316\u3002<br>ObjectInputStream\u4f1a\u8c03\u7528Student\u5bf9\u8c61\u7684readExternal(ObjectInput in)\u7684\u65b9\u6cd5\u8fdb\u884c\u53cd\u5e8f\u5217\u5316\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Java\u4e2d\u7684\u5e8f\u5217\u5316\u4e0e\u53cd\u5e8f\u5217\u5316\u5b9e\u73b0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Java \u63d0\u4f9b\u4e86\u5185\u7f6e\u7684\u5e8f\u5217\u5316\u5de5\u5177\uff0c\u4f7f\u5bf9\u8c61\u80fd\u65b9\u4fbf\u5730\u8f6c\u6362\u4e3a\u5b57\u8282\u6d41\u3002\u4e3b\u8981\u5de5\u5177\u5305\u62ecObjectOutputStream\u548cObjectInputStream\uff0c\u4ee5\u53caSerializable\u548cExternalizable\u63a5\u53e3\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Serializable\u63a5\u53e3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6807\u8bc6\u5bf9\u8c61\u53ef\u5e8f\u5217\u5316<br>\u8981\u5b9e\u73b0\u5e8f\u5217\u5316\u7684\u5bf9\u8c61\u7c7b\u9700\u8981\u5b9e\u73b0<code>Serializable<\/code>\u63a5\u53e3\u3002\u6807\u8bb0\u63a5\u53e3\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Externalizable\u63a5\u53e3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u81ea\u5b9a\u4e49\u5e8f\u5217\u5316\u903b\u8f91<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>writeExternal(ObjectOutput out)\uff1a\u5b9a\u4e49\u5982\u4f55\u5e8f\u5217\u5316\u5bf9\u8c61\u3002<\/li>\n\n\n\n<li>readExternal(ObjectInput in)\uff1a\u5b9a\u4e49\u5982\u4f55\u53cd\u5e8f\u5217\u5316\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.ObjectOutputStream\u7c7b\u548cObjectInputStream\u7c7b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bfb\u5199\u5b57\u8282\u6d41\u7684\u5bf9\u8c61<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ObjectOutputStream\uff1a\u6267\u884c\u5e8f\u5217\u5316\u3002<\/li>\n\n\n\n<li>ObjectInputStream\uff1a\u53cd\u5e8f\u5217\u5316\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. transient\u5173\u952e\u5b57<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fdd\u62a4\u654f\u611f\u6570\u636e<br>\u5728\u67d0\u4e9b\u573a\u666f\u4e2d\uff0c\u53ef\u80fd\u4e0d\u5e0c\u671b\u67d0\u4e9b\u5b57\u6bb5\u88ab\u5e8f\u5217\u5316\uff0c\u4f8b\u5982\u5bc6\u7801\u3001\u654f\u611f\u4fe1\u606f\u7b49\u3002\u53ef\u4ee5\u7528transient\u5173\u952e\u5b57\u58f0\u660e\u8fd9\u4e9b\u5b57\u6bb5\uff0c\u4ee5\u5ffd\u7565\u5e8f\u5217\u5316\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">RPC\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\u534f\u8bae<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/blog.csdn.net\/daobuxinzi\/article\/details\/133931185\">\u6587\u7ae0<\/a><br>\u5141\u8bb8\u7a0b\u5e8f\u8c03\u7528\u53e6\u4e00\u4e2a\u673a\u5668\u6216\u8005\u540c\u4e00\u673a\u5668\u7684\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u7684\u8fc7\u7a0b\u534f\u8bae<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">tcp\u534f\u8bae<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/blog.csdn.net\/crazymakercircle\/article\/details\/114527369\">\u6587\u7ae0\uff08\u5206\u5c42\u6a21\u578b\uff0cosi\u4e5f\u8bb2\u4e86\uff09<\/a><br>\u9762\u5411\u8fde\u63a5\u7684\uff0c\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae<br>\u5934\u90e8\u901a\u5e3820\u5b57\u8282\uff0c\u5305\u542b\u7aef\u53e3\uff0cseq\uff08\u5e8f\u5217\u53f7\uff09\uff0cack\uff08\u786e\u8ba4\u53f7\uff09\uff0c\u6807\u5fd7\u4f4d\uff08flags\uff09<br>flags<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>syn\uff1a\u53d1\u8d77\u8fde\u63a5<\/li>\n\n\n\n<li>ack\uff1a\u786e\u8ba4\u6536\u5230<\/li>\n\n\n\n<li>rst\uff1a\u91cd\u7f6e\u8fde\u63a5<\/li>\n\n\n\n<li>fin\uff1a\u7ed3\u675f\u8fde\u63a5<\/li>\n\n\n\n<li>psh\uff1a\u63a8\u9001\u6570\u636e<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fde\u63a5\u7ba1\u7406\uff08\u751f\u547d\u5468\u671f\uff09<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e09\u6b21\u63e1\u624b<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5ba2\u6237\u673a\u8fdb\u5165SYN_SENT\u72b6\u6001\uff0csyn\u6807\u5fd7\u4f4d\u88ab\u8bbe\u7f6e\u4e3a1\uff0c\u5e26\u4e0aclient\u5206\u914d\u597d\u7684sn\u5e8f\u5217\u53f7\uff08\u65f6\u95f4\u4ea7\u751f\u968f\u673a\u503c\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\u6bcf\u95f4\u96944ms\u4f1a\u52a01\uff09<\/li>\n\n\n\n<li>Server\u7aef\u6536\u5230SYN\u5e27\uff0c\u8fdb\u5165SYN_RCVD\u72b6\u6001\uff0c\u540c\u65f6\u8fd4\u56deSYN+ACK\u5e27\u7ed9Client\uff0c\u901a\u77e5\uff0cack\u6807\u5fd7\u4f4d\u8bbe\u7f6e\u4e3a1\uff0can\u4e3aclient\u7684sn+1\uff0csyn+ack\u7684syn\u6807\u5fd7\u4f4d\u4e3a1<\/li>\n\n\n\n<li>\u6536\u5230\u7b2c\u4e8c\u6b21\u63e1\u624b\u786e\u8ba4\u5e27\u540e\uff0c\u5c06\u72b6\u6001SYN_SENT\u53d8\u6210ESTABLISHED\uff0c\u5ba2\u6237\u673a\u5f00\u59cb\u53d1\u6570\u636e\uff0c\u7136\u540e\u53d1ack\u5e27\u7ed9server\uff0cack\u6807\u5fd7\u4f4d\u4e3a1\uff0c\u786e\u8ba4\u5e8f\u53f7\u4e3aserver\u7aefsn+1\u3002<\/li>\n\n\n\n<li>server\u6536\u5230ack\u5e27\u540e\uff0c\u4eceSYN_RCVD\u72b6\u6001\u4f1a\u8fdb\u5165ESTABLISHED\u72b6\u6001\u3002tcp\u5168\u53cc\u5de5\u8fde\u63a5\u5efa\u7acb\u5b8c\u6210<\/li>\n<\/ol>\n\n\n\n<h4 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