{"id":165069,"date":"2024-05-08T15:08:20","date_gmt":"2024-05-08T07:08:20","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/165069.html"},"modified":"2024-05-08T15:08:28","modified_gmt":"2024-05-08T07:08:28","slug":"nashron%e6%98%af%e5%a6%82%e4%bd%95%e5%b0%86javascript%e7%bc%96%e8%af%91%e4%b8%bajvm%e5%ad%97%e8%8a%82%e7%a0%81%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/165069.html","title":{"rendered":"Nashron\u662f\u5982\u4f55\u5c06javascript\u7f16\u8bd1\u4e3ajvm\u5b57\u8282\u7801\u7684"},"content":{"rendered":"

\"Nashron\u662f\u5982\u4f55\u5c06javascript\u7f16\u8bd1\u4e3ajvm\u5b57\u8282\u7801\u7684\"<\/p>\n

Nashorn\u662f\u4e00\u4e2aJavaScript\u5f15\u64ce\uff0c\u5b83\u5c06JavaScript\u4ee3\u7801\u7f16\u8bd1\u6210JVM\u5b57\u8282\u7801\uff0c\u4ece\u800c\u5728Java\u5e73\u53f0\u4e0a\u8fd0\u884c\u3002\u5176\u6838\u5fc3\u539f\u7406\u5305\u62ec\u89e3\u6790JavaScript\u6e90\u4ee3\u7801\u3001\u751f\u6210\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09\u3001\u901a\u8fc7JVM\u7684\u5373\u65f6\u7f16\u8bd1\u5668\uff08JIT\uff09\u5c06AST\u7f16\u8bd1\u4e3aJVM\u5b57\u8282\u7801<\/strong>\u7b49\u5173\u952e\u6b65\u9aa4\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0cNashorn\u80fd\u591f\u5b9e\u73b0JavaScript\u4ee3\u7801\u5728Java\u865a\u62df\u673a\u4e0a\u7684\u9ad8\u6548\u6267\u884c\uff0c\u540c\u65f6\u4e5f\u4f7f\u5f97JavaScript\u80fd\u591f\u4e0eJava\u5e94\u7528\u7a0b\u5e8f\u65e0\u7f1d\u96c6\u6210\u3002<\/p>\n<\/p>\n

\u7279\u522b\u5730\uff0c\u751f\u6210\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09\u73af\u8282\u662fNashorn\u5de5\u4f5c\u6d41\u7a0b\u4e2d\u7684\u91cd\u8981\u90e8\u5206\u3002\u5728\u8fd9\u4e00\u6b65\u9aa4\u4e2d\uff0cNashorn\u9996\u5148\u5bf9\u8f93\u5165\u7684JavaScript\u4ee3\u7801\u8fdb\u884c\u8bcd\u6cd5\u5206\u6790\u548c\u8bed\u6cd5\u5206\u6790\uff0c\u89e3\u6790\u4ee3\u7801\u4e2d\u7684\u7ed3\u6784\u5e76\u8bc6\u522b\u5176\u6784\u6210\u8981\u7d20\uff0c\u5982\u53d8\u91cf\u3001\u51fd\u6570\u8c03\u7528\u3001\u8868\u8fbe\u5f0f\u7b49\u3002\u7136\u540e\uff0c\u5b83\u6839\u636e\u8fd9\u4e9b\u4fe1\u606f\u6784\u5efa\u4e00\u4e2a\u62bd\u8c61\u8868\u793a\uff0c\u5373AST\uff0c\u8fd9\u662f\u4e00\u4e2a\u6811\u72b6\u7ed3\u6784\uff0c\u80fd\u591f\u8868\u793a\u7a0b\u5e8f\u7684\u903b\u8f91\u548c\u7ed3\u6784\u5c42\u6b21\u3002\u901a\u8fc7AST\uff0cNashorn\u80fd\u591f\u66f4\u6df1\u5165\u5730\u7406\u89e3\u4ee3\u7801\u610f\u56fe\uff0c\u5e76\u4e3a\u540e\u7eed\u7684\u7f16\u8bd1\u8fc7\u7a0b\u63d0\u4f9b\u4e30\u5bcc\u7684\u4fe1\u606f\u8d44\u6e90\u3002<\/p>\n<\/p>\n

\u4e00\u3001JAVASCRIPT\u4ee3\u7801\u89e3\u6790<\/h2>\n<\/p>\n

\u5728\u5c06JavaScript\u4ee3\u7801\u7f16\u8bd1\u4e3aJVM\u5b57\u8282\u7801\u7684\u8fc7\u7a0b\u4e2d\uff0c\u9996\u5148\u9700\u8981\u5bf9\u4ee3\u7801\u8fdb\u884c\u89e3\u6790\u3002\u8fd9\u4e00\u6b65\u5305\u62ec\u4e24\u4e2a\u91cd\u8981\u73af\u8282\uff1a\u8bcd\u6cd5\u5206\u6790\u548c\u8bed\u6cd5\u5206\u6790\u3002<\/p>\n<\/p>\n

\u8bcd\u6cd5\u5206\u6790<\/h3>\n<\/p>\n

\u8bcd\u6cd5\u5206\u6790\u662f\u5c06\u6e90\u4ee3\u7801\u6587\u672c\u5206\u5272\u6210\u4e00\u7cfb\u5217\u7684\u6807\u8bb0\uff08tokens\uff09\u7684\u8fc7\u7a0b\u3002\u8fd9\u4e9b\u6807\u8bb0\u662f\u6e90\u4ee3\u7801\u8bed\u4e49\u7684\u6700\u5c0f\u5355\u4f4d\uff0c\u5982\u5173\u952e\u5b57\u3001\u6807\u8bc6\u7b26\u3001\u5b57\u9762\u91cf\u548c\u8fd0\u7b97\u7b26\u7b49\u3002Nashorn\u901a\u8fc7\u8bcd\u6cd5\u5206\u6790\u5668\u8bfb\u53d6JavaScript\u4ee3\u7801\uff0c\u5c06\u4ee3\u7801\u6587\u672c\u8f6c\u6362\u4e3a\u6807\u8bb0\u6d41\uff0c\u4e3a\u4e0b\u4e00\u4e2a\u9636\u6bb5\u7684\u8bed\u6cd5\u5206\u6790\u505a\u51c6\u5907\u3002<\/p>\n<\/p>\n

\u8bed\u6cd5\u5206\u6790<\/h3>\n<\/p>\n

\u8bed\u6cd5\u5206\u6790\u5219\u662f\u6839\u636e\u8bed\u8a00\u7684\u8bed\u6cd5\u89c4\u5219\uff0c\u5c06\u524d\u4e00\u9636\u6bb5\u4ea7\u751f\u7684\u6807\u8bb0\u6d41\u7ec4\u88c5\u6210\u4e3a\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09\u3002\u8fd9\u4e2a\u9636\u6bb5\u662f\u7f16\u8bd1\u8fc7\u7a0b\u7684\u5173\u952e\uff0c\u56e0\u4e3aAST\u80fd\u591f\u53cd\u6620\u51fa\u7a0b\u5e8f\u7684\u7ed3\u6784\u548c\u8bed\u4e49\uff0c\u662f\u540e\u7eed\u7f16\u8bd1\u8fc7\u7a0b\u7684\u57fa\u7840\u3002\u901a\u8fc7\u6784\u5efa\u51fa\u7684AST\uff0cNashorn\u80fd\u591f\u51c6\u786e\u5730\u7406\u89e3JavaScript\u4ee3\u7801\u7684\u610f\u56fe\u548c\u7ed3\u6784\u3002<\/p>\n<\/p>\n

\u4e8c\u3001AST\u5230\u5b57\u8282\u7801\u7684\u8f6c\u6362<\/h2>\n<\/p>\n

\u62e5\u6709\u4e86\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09\u4e4b\u540e\uff0cNashorn\u63a5\u4e0b\u6765\u7684\u4efb\u52a1\u662f\u5c06\u5176\u8f6c\u6362\u4e3aJVM\u80fd\u591f\u7406\u89e3\u548c\u6267\u884c\u7684\u5b57\u8282\u7801\u3002\u8fd9\u4e00\u8fc7\u7a0b\u5206\u4e3a\u4e24\u4e2a\u4e3b\u8981\u7684\u90e8\u5206\uff1a\u5b57\u8282\u7801\u751f\u6210\u548c\u4f18\u5316\u5904\u7406\u3002<\/p>\n<\/p>\n

\u5b57\u8282\u7801\u751f\u6210<\/h3>\n<\/p>\n

Nashorn\u5229\u7528AST\uff0c\u901a\u8fc7\u904d\u5386\u6811\u4e2d\u7684\u6bcf\u4e2a\u8282\u70b9\uff0c\u6839\u636e\u6bcf\u4e2a\u8282\u70b9\u6240\u4ee3\u8868\u7684\u8bed\u4e49\u751f\u6210\u76f8\u5e94\u7684JVM\u5b57\u8282\u7801\u6307\u4ee4\u3002\u8fd9\u5305\u62ec\u5bf9\u53d8\u91cf\u58f0\u660e\u3001\u51fd\u6570\u8c03\u7528\u3001\u63a7\u5236\u6d41\u8bed\u53e5\u7b49JavaScript\u8bed\u8a00\u7279\u6027\u7684\u5904\u7406\u3002\u901a\u8fc7\u8fd9\u6837\u7684\u65b9\u5f0f\uff0cNashorn\u5c06JavaScript\u4ee3\u7801\u9010\u6b65\u7ffb\u8bd1\u4e3aJVM\u53ef\u4ee5\u6267\u884c\u7684\u5b57\u8282\u7801\u3002<\/p>\n<\/p>\n

\u4f18\u5316\u5904\u7406<\/h3>\n<\/p>\n

\u5b57\u8282\u7801\u751f\u6210\u5b8c\u6210\u540e\uff0cNashorn\u8fd8\u4f1a\u8fdb\u884c\u5b57\u8282\u7801\u7684\u4f18\u5316\u5904\u7406\u3002\u8fd9\u5305\u62ec\u53bb\u9664\u65e0\u7528\u4ee3\u7801\u3001\u4f18\u5316\u5faa\u73af\u3001\u65b9\u6cd5\u5185\u8054\u7b49\u591a\u79cd\u4f18\u5316\u6280\u672f\u3002\u4f18\u5316\u5904\u7406\u7684\u76ee\u7684\u5728\u4e8e\u63d0\u9ad8\u5b57\u8282\u7801\u7684\u6267\u884c\u6548\u7387\u548c\u6027\u80fd\u3002\u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\u5904\u7406\uff0cNashorn\u786e\u4fdd\u751f\u6210\u7684\u5b57\u8282\u7801\u65e2\u9ad8\u6548\u53c8\u7d27\u51d1\u3002<\/p>\n<\/p>\n

\u4e09\u3001JVM\u4e0a\u7684\u6267\u884c<\/h2>\n<\/p>\n

\u751f\u6210\u5e76\u4f18\u5316\u8fc7\u7684\u5b57\u8282\u7801\u5c06\u88abJVM\u52a0\u8f7d\u548c\u6267\u884c\u3002\u5728\u8fd9\u4e00\u9636\u6bb5\uff0cJVM\u4f1a\u5229\u7528\u5373\u65f6\u7f16\u8bd1\u5668\uff08JIT\uff09\u8fdb\u4e00\u6b65\u5c06\u5b57\u8282\u7801\u7f16\u8bd1\u4e3a\u672c\u5730\u673a\u5668\u7801\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u9ad8\u7684\u6267\u884c\u6548\u7387\u3002<\/p>\n<\/p>\n

Jvm\u7684\u5373\u65f6\u7f16\u8bd1\u5668(JIT)<\/h3>\n<\/p>\n

JIT\u7f16\u8bd1\u5668\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u6839\u636e\u4ee3\u7801\u7684\u5b9e\u9645\u6267\u884c\u60c5\u51b5\u8fdb\u884c\u7f16\u8bd1\uff0c\u80fd\u591f\u5145\u5206\u5229\u7528\u8fd0\u884c\u65f6\u4fe1\u606f\u6765\u4f18\u5316\u4ee3\u7801\u6267\u884c\u3002Nashorn\u901a\u8fc7JVM\u7684JIT\u7f16\u8bd1\u5668\uff0c\u80fd\u591f\u4f7fJavaScript\u4ee3\u7801\u8fbe\u5230\u63a5\u8fd1Java\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\u3002<\/p>\n<\/p>\n

\u9ad8\u6548\u7684\u6267\u884c<\/h3>\n<\/p>\n

JVM\u501f\u52a9Nashorn\u63d0\u4f9b\u7684\u5b57\u8282\u7801\uff0c\u7ed3\u5408JIT\u7f16\u8bd1\u5668\u7684\u4f18\u5316\uff0c\u4f7f\u5f97JavaScript\u4ee3\u7801\u5728Java\u5e73\u53f0\u4e0a\u7684\u6267\u884c\u9ad8\u6548\u4e14\u7a33\u5b9a\u3002\u8fd9\u4e0d\u4ec5\u63d0\u5347\u4e86JavaScript\u7684\u6267\u884c\u6548\u7387\uff0c\u4e5f\u52a0\u5f3a\u4e86Java\u4e0eJavaScript\u4e24\u79cd\u8bed\u8a00\u4e4b\u95f4\u7684\u4e92\u64cd\u4f5c\u6027\u3002<\/p>\n<\/p>\n

\u56db\u3001\u4e0eJAVA\u7684\u4e92\u64cd\u4f5c<\/h2>\n<\/p>\n

Nashorn\u4e0d\u4ec5\u80fd\u591f\u5c06JavaScript\u7f16\u8bd1\u6267\u884c\u5728JVM\u4e0a\uff0c\u8fd8\u652f\u6301JavaScript\u4e0eJava\u4ee3\u7801\u7684\u4e92\u64cd\u4f5c\uff0c\u4f7f\u5f97\u5728Java\u5e94\u7528\u4e2d\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528JavaScript\u51fd\u6570\uff0c\u5e76\u4e14\u5728JavaScript\u4ee3\u7801\u4e2d\u53ef\u4ee5\u4f7f\u7528Java\u7c7b\u548c\u5bf9\u8c61\u3002<\/p>\n<\/p>\n

\u8c03\u7528JavaScript<\/h3>\n<\/p>\n

Java\u4ee3\u7801\u80fd\u591f\u901a\u8fc7Nashorn\u63d0\u4f9b\u7684API\u76f4\u63a5\u8c03\u7528JavaScript\u51fd\u6570\u548c\u53d8\u91cf\uff0c\u8fd9\u4e3aJava\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u6781\u5927\u7684\u7075\u6d3b\u6027\u548c\u6269\u5c55\u6027\u3002<\/p>\n<\/p>\n

JavaScript\u4f7f\u7528Java<\/h3>\n<\/p>\n

\u540c\u6837\uff0cJavaScript\u4ee3\u7801\u4e2d\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Java\u7684\u7c7b\u548c\u5bf9\u8c61\uff0c\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5b9e\u73b0\u590d\u6742\u903b\u8f91\u7684\u5904\u7406\u548c\u7b2c\u4e09\u65b9Java\u5e93\u7684\u96c6\u6210\u3002\u8fd9\u5927\u5927\u4e30\u5bcc\u4e86JavaScript\u7684\u5e94\u7528\u573a\u666f\u548c\u529f\u80fd\u3002<\/p>\n<\/p>\n

\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\u548c\u673a\u5236\uff0cNashorn\u5b9e\u73b0\u4e86JavaScript\u4ee3\u7801\u5230JVM\u5b57\u8282\u7801\u7684\u9ad8\u6548\u7f16\u8bd1\uff0c\u4f7f\u5f97JavaScript\u4e0d\u4ec5\u53ef\u4ee5\u5728Java\u5e73\u53f0\u4e0a\u9ad8\u6548\u6267\u884c\uff0c\u8fd8\u80fd\u4e0eJava\u8fdb\u884c\u65e0\u7f1d\u96c6\u6210\uff0c\u6781\u5927\u5730\u6269\u5c55\u4e86JavaScript\u7684\u5e94\u7528\u9886\u57df\u3002<\/p>\n<\/p>\n

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

\u5982\u4f55\u4f7f\u7528Nashorn\u5c06JavaScript\u4ee3\u7801\u8f6c\u6362\u4e3aJVM\u5b57\u8282\u7801\uff1f<\/strong><\/p>\n

    \n
  1. Nashorn\u662f\u4ec0\u4e48\uff1f\u5b83\u4e0e\u5176\u4ed6JavaScript\u5f15\u64ce\u6709\u4ec0\u4e48\u4e0d\u540c\uff1f<\/strong><\/li>\n<\/ol>\n

    Nashorn\u662fJava\u63d0\u4f9b\u7684\u4e00\u4e2a\u5373\u65f6\u7f16\u8bd1\u7684JavaScript\u5f15\u64ce\uff0c\u5b83\u53ef\u4ee5\u5c06JavaScript\u4ee3\u7801\u7f16\u8bd1\u6210JVM\u5b57\u8282\u7801\u3002\u4e0e\u5176\u4ed6JavaScript\u5f15\u64ce\u76f8\u6bd4\uff0cNashorn\u5177\u6709\u66f4\u597d\u7684\u6027\u80fd\u548c\u66f4\u4f4e\u7684\u5185\u5b58\u6d88\u8017\uff0c\u8fd9\u4f7f\u5f97\u5b83\u5728\u5904\u7406\u5927\u578bJavaScript\u5e94\u7528\u7a0b\u5e8f\u65f6\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n

      \n
    1. Nashorn\u5982\u4f55\u5c06JavaScript\u4ee3\u7801\u8f6c\u6362\u4e3aJVM\u5b57\u8282\u7801\uff1f<\/strong><\/li>\n<\/ol>\n

      Nashorn\u7684\u7f16\u8bd1\u8fc7\u7a0b\u5206\u4e3a\u4e24\u4e2a\u9636\u6bb5\u3002\u9996\u5148\uff0c\u5b83\u5c06JavaScript\u4ee3\u7801\u89e3\u6790\u6210\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09\uff0c\u7136\u540e\u5c06AST\u8f6c\u6362\u4e3aJVM\u5b57\u8282\u7801\u3002\u8fd9\u79cd\u8f6c\u6362\u8fc7\u7a0b\u5305\u62ec\u751f\u6210\u7c7b\u3001\u65b9\u6cd5\u548c\u64cd\u4f5c\u7801\uff0c\u4ee5\u4fbf\u5728JVM\u4e0a\u6267\u884cJavaScript\u4ee3\u7801\u3002<\/p>\n

        \n
      1. \u4e3a\u4ec0\u4e48\u4f7f\u7528Nashorn\u5c06JavaScript\u4ee3\u7801\u8f6c\u6362\u4e3aJVM\u5b57\u8282\u7801\uff1f<\/strong><\/li>\n<\/ol>\n

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