{"id":72202,"date":"2024-02-20T16:04:37","date_gmt":"2024-02-20T08:04:37","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=72202"},"modified":"2024-02-20T16:12:54","modified_gmt":"2024-02-20T08:12:54","slug":"java-%e4%b8%ad%e7%9a%84%e5%8a%a8%e6%80%81%e8%af%ad%e8%a8%80%e6%94%af%e6%8c%81%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/72202.html","title":{"rendered":"Java \u4e2d\u7684\u52a8\u6001\u8bed\u8a00\u652f\u6301\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

\"Java<\/p>\n

\u5728Java\u4e2d\uff0c\u52a8\u6001\u8bed\u8a00\u652f\u6301<\/strong>\u4e3b\u8981\u662f\u6307Java\u865a\u62df\u673a\uff08JVM\uff09\u5bf9\u975eJava\u8bed\u8a00\u7684\u652f\u6301\uff0c\u8ba9\u5f00\u53d1\u8005\u80fd\u591f\u5728JVM\u5e73\u53f0\u4e0a\u4f7f\u7528\u5176\u4ed6\u52a8\u6001\u8bed\u8a00\u8fdb\u884c\u5f00\u53d1\u3002\u8fd9\u4e00\u652f\u6301\u901a\u8fc7Java\u8bed\u8a00\u4e2d\u7684`invokedynamic`\u6307\u4ee4<\/strong>\u5b9e\u73b0\uff0c\u8be5\u6307\u4ee4\u4e8eJava 7\u4e2d\u5f15\u5165\u3001\u63d0\u9ad8\u4e86JVM\u5bf9\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\u7684\u6267\u884c\u6548\u7387<\/strong>\u3002\u52a8\u6001\u8bed\u8a00\u652f\u6301\u7684\u6838\u5fc3\u8981\u7d20\u5305\u62ec\u52a8\u6001\u7c7b\u578b\u7684\u8bed\u8a00\u8fd0\u884c\u65f6\u6548\u7387\u63d0\u5347<\/strong>\u3001\u7b80\u5316\u4e86\u52a8\u6001\u8bed\u8a00\u7f16\u8bd1\u5668\u7684\u5b9e\u73b0<\/strong>\u3001\u589e\u5f3a\u4e86\u8bed\u8a00\u95f4\u7684\u4e92\u64cd\u4f5c\u6027<\/strong>\u3002\u5176\u4e2d\uff0c`invokedynamic`\u6307\u4ee4\u7684\u5f15\u5165\u5bf9\u52a8\u6001\u8bed\u8a00\u7684\u652f\u6301\u5f71\u54cd\u6700\u5927\uff0c\u5b83\u5141\u8bb8JVM\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u89e3\u6790\u51fa\u8c03\u7528\u76ee\u6807\uff0c\u4ece\u800c\u5927\u5927\u63d0\u9ad8\u4e86\u52a8\u6001\u8bed\u8a00\u7684\u6267\u884c\u901f\u5ea6\u3002<\/p>\n

### \u4e00\u3001INVOKEDYNAMIC\u6307\u4ee4\u8be6\u89e3<\/p>\n

`invokedynamic`\u6307\u4ee4\u662fJava 7\u5f15\u5165\u7684\u4e00\u9879\u91cd\u8981\u7279\u6027\uff0c\u5b83\u4e3aJVM\u6dfb\u52a0\u4e86\u5bf9\u52a8\u6001\u8bed\u8a00\u7684\u66f4\u5f3a\u5927\u652f\u6301\u3002\u5728\u6b64\u4e4b\u524d\uff0cJVM\u4e3b\u8981\u9488\u5bf9\u9759\u6001\u7c7b\u578b\u8bed\u8a00\u8bbe\u8ba1\uff0c\u5982Java\u81ea\u8eab\u3002\u52a8\u6001\u8bed\u8a00\uff08\u5982Ruby\u3001Python\uff09\u5728JVM\u4e0a\u8fd0\u884c\u65f6\u5f80\u5f80\u9700\u8981\u989d\u5916\u7684\u8f6c\u6362\u6216\u5305\u88c5\uff0c\u8fd9\u4e0d\u4ec5\u964d\u4f4e\u4e86\u6267\u884c\u6548\u7387\uff0c\u4e5f\u589e\u52a0\u4e86\u5b9e\u73b0\u7684\u590d\u6742\u5ea6\u3002`invokedynamic`\u6307\u4ee4\u7684\u5f15\u5165\uff0c\u4f7f\u5f97JVM\u53ef\u4ee5\u539f\u751f\u652f\u6301\u52a8\u6001\u7c7b\u578b\u89e3\u6790\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u52a8\u6001\u8bed\u8a00\u5728JVM\u4e0a\u7684\u8fd0\u884c\u6548\u7387\u3002<\/p>\n

#### \u4e00\u3001\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\u7684\u6267\u884c\u6548\u7387\u63d0\u5347<\/p>\n

\u901a\u8fc7`invokedynamic`\uff0cJVM\u5728\u6267\u884c\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\u65f6\uff0c\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u7ed1\u5b9a\u65b9\u6cd5\u6216\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u5728\u7f16\u8bd1\u65f6\u3002\u8fd9\u79cd\u673a\u5236\u51cf\u5c11\u4e86\u52a8\u6001\u8bed\u8a00\u8fd0\u884c\u65f6\u7684\u5f00\u9500\uff0c\u63d0\u9ad8\u4e86\u6267\u884c\u6548\u7387\u3002\u4f8b\u5982\uff0c\u5728Groovy\u6216Scala\u8fd9\u6837\u7684\u8bed\u8a00\u4e2d\uff0c`invokedynamic`\u4f7f\u5f97\u52a8\u6001\u65b9\u6cd5\u8c03\u7528\u7684\u901f\u5ea6\u5927\u5927\u63d0\u9ad8\u3002<\/p>\n

#### \u4e8c\u3001\u7b80\u5316\u52a8\u6001\u8bed\u8a00\u7f16\u8bd1\u5668\u7684\u5b9e\u73b0<\/p>\n

`invokedynamic`\u6307\u4ee4\u7b80\u5316\u4e86\u52a8\u6001\u8bed\u8a00\u7f16\u8bd1\u5668\u7684\u5b9e\u73b0\u3002\u52a8\u6001\u8bed\u8a00\u7684\u7f16\u8bd1\u5668\u53ef\u4ee5\u5229\u7528\u8fd9\u4e00\u6307\u4ee4\uff0c\u66f4\u52a0\u5bb9\u6613\u5730\u5728JVM\u5e73\u53f0\u4e0a\u5b9e\u73b0\u8bed\u8a00\u7279\u6027\uff0c\u800c\u4e0d\u5fc5\u62c5\u5fc3\u5982\u4f55\u5c06\u52a8\u6001\u7c7b\u578b\u8bed\u8a00\u7684\u7279\u6027\u6620\u5c04\u5230JVM\u539f\u751f\u652f\u6301\u7684\u64cd\u4f5c\u4e0a\u3002\u8fd9\u610f\u5473\u7740\uff0c\u8bed\u8a00\u8bbe\u8ba1\u8005\u53ef\u4ee5\u66f4\u4e13\u6ce8\u4e8e\u8bed\u8a00\u672c\u8eab\u7684\u7279\u6027\uff0c\u800c\u4e0d\u662f\u5176\u5728JVM\u4e0a\u7684\u5b9e\u73b0\u7ec6\u8282\u3002<\/p>\n

#### \u4e09\u3001\u589e\u5f3a\u8bed\u8a00\u95f4\u7684\u4e92\u64cd\u4f5c\u6027<\/p>\n

`invokedynamic`\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u52a8\u6001\u8bed\u8a00\u7684\u6267\u884c\u6548\u7387\uff0c\u8fd8\u589e\u5f3a\u4e86\u4e0d\u540c\u8bed\u8a00\u95f4\u7684\u4e92\u64cd\u4f5c\u6027\u3002\u7531\u4e8eJVM\u73b0\u5728\u53ef\u4ee5\u66f4\u52a0\u7075\u6d3b\u5730\u652f\u6301\u52a8\u6001\u7c7b\u578b\uff0c\u4e0d\u540c\u8bed\u8a00\u4e4b\u95f4\u7684\u96c6\u6210\u53d8\u5f97\u66f4\u52a0\u7b80\u5355\u3002\u4f8b\u5982\uff0cJava\u7a0b\u5e8f\u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u8c03\u7528Scala\u6216Groovy\u4e2d\u7684\u65b9\u6cd5\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002\u8fd9\u79cd\u4e92\u64cd\u4f5c\u6027\u7684\u589e\u5f3a\uff0c\u4e3a\u6784\u5efa\u591a\u8bed\u8a00\u6df7\u5408\u5e94\u7528\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u7075\u6d3b\u6027\u3002<\/p>\n

### \u56db\u3001\u5b9e\u9645\u5e94\u7528\u6848\u4f8b<\/p>\n

\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u52a8\u6001\u8bed\u8a00\u652f\u6301\u4f7f\u5f97\u5f00\u53d1\u8005\u80fd\u591f\u5229\u7528\u5404\u79cd\u8bed\u8a00\u7684\u4f18\u52bf\uff0c\u6839\u636e\u9879\u76ee\u9700\u6c42\u7075\u6d3b\u9009\u62e9\u7f16\u7a0b\u8bed\u8a00\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u9879\u76ee\u53ef\u80fd\u4f7f\u7528Java\u8fdb\u884c\u5927\u90e8\u5206\u7684\u540e\u7aef\u5f00\u53d1\uff0c\u4f46\u540c\u65f6\u5229\u7528Groovy\u7684\u52a8\u6001\u7279\u6027\u6765\u7f16\u5199\u6d4b\u8bd5\u811a\u672c\u6216\u5feb\u901f\u539f\u578b\u3002\u901a\u8fc7`invokedynamic`\uff0c\u8fd9\u4e9b\u4e0d\u540c\u8bed\u8a00\u7f16\u5199\u7684\u90e8\u5206\u53ef\u4ee5\u65e0\u7f1d\u96c6\u6210\uff0c\u5171\u540c\u8fd0\u884c\u5728\u540c\u4e00\u4e2aJVM\u5b9e\u4f8b\u4e0a\u3002<\/p>\n

### \u4e94\u3001\u603b\u7ed3<\/p>\n

Java\u4e2d\u7684\u52a8\u6001\u8bed\u8a00\u652f\u6301\uff0c\u7279\u522b\u662f\u901a\u8fc7`invokedynamic`\u6307\u4ee4\u7684\u5f15\u5165\uff0c\u5927\u5927\u63d0\u5347\u4e86JVM\u5bf9\u52a8\u6001\u8bed\u8a00\u7684\u652f\u6301\u3002\u8fd9\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u52a8\u6001\u8bed\u8a00\u7684\u6267\u884c\u6548\u7387\uff0c\u7b80\u5316\u4e86\u7f16\u8bd1\u5668\u7684\u5b9e\u73b0\uff0c\u8fd8\u589e\u5f3a\u4e86\u4e0d\u540c\u8bed\u8a00\u95f4\u7684\u4e92\u64cd\u4f5c\u6027\u3002\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0c\u6211\u4eec\u53ef\u4ee5\u9884\u671fJVM\u5c06\u6210\u4e3a\u4e00\u4e2a\u66f4\u52a0\u591a\u5143\u5316\u7684\u5e73\u53f0\uff0c\u652f\u6301\u66f4\u591a\u7684\u8bed\u8a00\u548c\u5e94\u7528\u573a\u666f\u3002<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

Java \u4e2d\u7684\u52a8\u6001\u8bed\u8a00\u652f\u6301\u6709\u54ea\u4e9b\u65b9\u9762\uff1f<\/strong><\/p>\n

Java \u4ece\u7248\u672c7\u5f00\u59cb\u5f15\u5165\u4e86\u5bf9\u52a8\u6001\u8bed\u8a00\u7684\u652f\u6301\uff0c\u4e3b\u8981\u4f53\u73b0\u5728\u4e24\u4e2a\u65b9\u9762\uff1a\u7b2c\u4e00\uff0c\u901a\u8fc7\u4f7f\u7528\u52a8\u6001\u7c7b\u578b `Var` \u53d8\u91cf\uff0c\u53ef\u4ee5\u5728\u4e0d\u6307\u5b9a\u5177\u4f53\u7c7b\u578b\u7684\u60c5\u51b5\u4e0b\u63a8\u65ad\u53d8\u91cf\u7c7b\u578b\uff0c\u7b80\u5316\u4e86\u4ee3\u7801\u7f16\u5199\u8fc7\u7a0b\uff1b\u7b2c\u4e8c\uff0c\u5f15\u5165\u4e86 `InvokeDynamic` \u6307\u4ee4\uff0c\u4f7f\u5f97 Java \u80fd\u591f\u66f4\u597d\u5730\u4e0e\u52a8\u6001\u8bed\u8a00\u8fdb\u884c\u4ea4\u4e92\uff0c\u63d0\u9ad8\u4e86\u6267\u884c\u6548\u7387\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528 Java \u7684\u52a8\u6001\u8bed\u8a00\u652f\u6301\uff1f<\/strong><\/p>\n

\u8981\u4f7f\u7528 Java \u4e2d\u7684\u52a8\u6001\u8bed\u8a00\u652f\u6301\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728\u53d8\u91cf\u58f0\u660e\u65f6\u4f7f\u7528 `Var` \u5173\u952e\u5b57\u6765\u8fdb\u884c\u7c7b\u578b\u63a8\u65ad\uff0c\u4f8b\u5982 `var list = new ArrayList();`\uff1b\u6b64\u5916\uff0c\u53ef\u4ee5\u901a\u8fc7 `InvokeDynamic` \u6307\u4ee4\u5b9e\u73b0\u52a8\u6001\u8bed\u8a00\u7684\u529f\u80fd\uff0c\u5982\u52a8\u6001\u8c03\u7528\u65b9\u6cd5\u6216\u5b9e\u73b0\u51fd\u6570\u5f0f\u7f16\u7a0b\u3002<\/p>\n

Java \u4e2d\u7684\u52a8\u6001\u8bed\u8a00\u652f\u6301\u5bf9\u5f00\u53d1\u6709\u4f55\u597d\u5904\uff1f<\/strong><\/p>\n

Java \u7684\u52a8\u6001\u8bed\u8a00\u652f\u6301\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\u7f16\u5199\uff0c\u51cf\u5c11\u5197\u4f59\u7684\u7c7b\u578b\u58f0\u660e\uff0c\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7f16\u5199\u6548\u7387\uff1b\u540c\u65f6\uff0c\u4e0e\u52a8\u6001\u8bed\u8a00\u7684\u4ea4\u4e92\u6027\u589e\u5f3a\u4e86 Java \u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u7684\u7075\u6d3b\u6027\uff0c\u66f4\u597d\u5730\u6ee1\u8db3\u4e86\u4e00\u4e9b\u52a8\u6001\u8bed\u8a00\u6240\u5177\u6709\u7684\u7279\u6027\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Java\u4e2d\uff0c\u52a8\u6001\u8bed\u8a00\u652f\u6301\u4e3b\u8981\u662f\u6307Java\u865a\u62df\u673a\uff08JVM\uff09\u5bf9\u975eJava\u8bed\u8a00\u7684\u652f\u6301\uff0c\u8ba9\u5f00\u53d1\u8005\u80fd\u591f\u5728JVM\u5e73\u53f0\u4e0a\u4f7f […]","protected":false},"author":1,"featured_media":72236,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/72202"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=72202"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/72202\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/72236"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=72202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=72202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=72202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}