{"id":11105,"date":"2023-11-28T21:51:48","date_gmt":"2023-11-28T13:51:48","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11105"},"modified":"2023-12-07T16:20:22","modified_gmt":"2023-12-07T08:20:22","slug":"jvm-zhong-lei-jia-zai-qi-shuang-qin-wei-pai-mo-xin","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-lei-jia-zai-qi-shuang-qin-wei-pai-mo-xin\/","title":{"rendered":"JVM\u4e2d\u7c7b\u52a0\u8f7d\u5668\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\u673a\u5236\uff1f"},"content":{"rendered":"

Java\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\u7684\u7c7b\u52a0\u8f7d\u5668\u91c7\u7528\u4e86\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\uff08Delegation Model\uff09\u3002\u8fd9\u662f\u4e00\u79cd\u5c42\u6b21\u5316\u7684\u7c7b\u52a0\u8f7d\u673a\u5236\uff0c\u4e3b\u8981\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u6982\u5ff5\uff1a<\/p>\n

    \n
  1. \n\u542f\u52a8\u7c7b\u52a0\u8f7d\u5668\uff08Bootstrap Class Loader\uff09\uff1a<\/strong><\/p>\n
      \n
    • \u662f\u6700\u9876\u5c42\u7684\u7c7b\u52a0\u8f7d\u5668\uff0c\u8d1f\u8d23\u52a0\u8f7dJava\u6838\u5fc3\u7c7b\u5e93\uff08\u5982java.lang<\/code>\u5305\u4e0b\u7684\u7c7b\uff09\u3002<\/li>\n
    • \u7531C++\u5b9e\u73b0\uff0c\u4e00\u822c\u65e0\u6cd5\u76f4\u63a5\u5728Java\u4ee3\u7801\u4e2d\u83b7\u53d6\u5bf9\u5176\u7684\u5f15\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \n\u6269\u5c55\u7c7b\u52a0\u8f7d\u5668\uff08Extension Class Loader\uff09\uff1a<\/strong><\/p>\n
        \n
      • \u662f\u542f\u52a8\u7c7b\u52a0\u8f7d\u5668\u7684\u5b50\u7c7b\uff0c\u8d1f\u8d23\u52a0\u8f7djava.ext.dirs<\/code>\u7cfb\u7edf\u5c5e\u6027\u6307\u5b9a\u7684\u76ee\u5f55\u4e2d\u7684\u7c7b\u5e93\u3002<\/li>\n
      • \u901a\u8fc7sun.misc.Launcher$ExtClassLoader<\/code>\u5b9e\u73b0\uff0c\u53ef\u4ee5\u901a\u8fc7Java\u4ee3\u7801\u83b7\u53d6\u5f15\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \n\u5e94\u7528\u7a0b\u5e8f\u7c7b\u52a0\u8f7d\u5668\uff08Application Class Loader\uff09\uff1a<\/strong><\/p>\n
          \n
        • \u4e5f\u79f0\u4e3a\u7cfb\u7edf\u7c7b\u52a0\u8f7d\u5668\uff0c\u8d1f\u8d23\u52a0\u8f7d\u5e94\u7528\u7a0b\u5e8fclasspath\u8def\u5f84\u4e0a\u7684\u7c7b\u5e93\u3002<\/li>\n
        • \u662f\u6269\u5c55\u7c7b\u52a0\u8f7d\u5668\u7684\u5b50\u7c7b\uff0c\u901a\u8fc7sun.misc.Launcher$AppClassLoader<\/code>\u5b9e\u73b0\uff0c\u53ef\u4ee5\u901a\u8fc7Java\u4ee3\u7801\u83b7\u53d6\u5f15\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \n\u81ea\u5b9a\u4e49\u7c7b\u52a0\u8f7d\u5668\uff1a<\/strong><\/p>\n
            \n
          • \u7ee7\u627fClassLoader<\/code>\u7c7b\u7684\u7528\u6237\u81ea\u5b9a\u4e49\u7c7b\u52a0\u8f7d\u5668\uff0c\u53ef\u4ee5\u52a0\u8f7d\u7528\u6237\u81ea\u5b9a\u4e49\u8def\u5f84\u4e0a\u7684\u7c7b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

            \u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\u7684\u5de5\u4f5c\u6d41\u7a0b\uff1a<\/strong><\/p>\n

              \n
            1. \u5f53\u4e00\u4e2a\u7c7b\u52a0\u8f7d\u5668\u6536\u5230\u52a0\u8f7d\u7c7b\u7684\u8bf7\u6c42\u65f6\uff0c\u9996\u5148\u4f1a\u68c0\u67e5\u81ea\u5df1\u662f\u5426\u5df2\u7ecf\u52a0\u8f7d\u8fc7\u8fd9\u4e2a\u7c7b\u3002\u5982\u679c\u5df2\u7ecf\u52a0\u8f7d\u8fc7\uff0c\u76f4\u63a5\u8fd4\u56de\u8be5\u7c7b\u7684Class\u5bf9\u8c61\u3002<\/li>\n
            2. \u5982\u679c\u7c7b\u672a\u52a0\u8f7d\uff0c\u8be5\u52a0\u8f7d\u5668\u4f1a\u5c06\u52a0\u8f7d\u4efb\u52a1\u59d4\u6d3e\u7ed9\u5176\u7236\u7c7b\u52a0\u8f7d\u5668\uff0c\u8ba9\u7236\u7c7b\u52a0\u8f7d\u5668\u53bb\u5c1d\u8bd5\u52a0\u8f7d\u3002\u8fd9\u6837\u7684\u9012\u5f52\u59d4\u6d3e\u8fc7\u7a0b\u4e00\u76f4\u5411\u4e0a\uff0c\u76f4\u5230\u8fbe\u5230\u542f\u52a8\u7c7b\u52a0\u8f7d\u5668\u3002<\/li>\n
            3. \u5982\u679c\u542f\u52a8\u7c7b\u52a0\u8f7d\u5668\u65e0\u6cd5\u52a0\u8f7d\u8be5\u7c7b\uff0c\u6bcf\u4e2a\u7c7b\u52a0\u8f7d\u5668\u4f1a\u5c1d\u8bd5\u81ea\u5df1\u52a0\u8f7d\u3002\u5982\u679c\u52a0\u8f7d\u6210\u529f\uff0c\u8fd4\u56de\u8be5\u7c7b\u7684Class\u5bf9\u8c61\uff1b\u5982\u679c\u5931\u8d25\uff0c\u518d\u5c06\u52a0\u8f7d\u4efb\u52a1\u59d4\u6d3e\u7ed9\u5b50\u7c7b\u52a0\u8f7d\u5668\u3002<\/li>\n<\/ol>\n

              \u4f18\u52bf\u548c\u539f\u7406\uff1a<\/strong><\/p>\n

                \n
              • \u4f18\u52bf\uff1a<\/strong> \u907f\u514d\u7c7b\u7684\u91cd\u590d\u52a0\u8f7d\uff0c\u786e\u4fddJava\u6838\u5fc3\u7c7b\u5e93\u7684\u4e00\u81f4\u6027\uff0c\u63d0\u9ad8\u5b89\u5168\u6027\u3002<\/li>\n
              • \u539f\u7406\uff1a<\/strong> \u5f53\u4e00\u4e2a\u7c7b\u52a0\u8f7d\u5668\u5c1d\u8bd5\u52a0\u8f7d\u7c7b\u65f6\uff0c\u5148\u59d4\u6d3e\u7ed9\u7236\u7c7b\u52a0\u8f7d\u5668\uff0c\u53ea\u6709\u5728\u7236\u7c7b\u52a0\u8f7d\u5668\u65e0\u6cd5\u5b8c\u6210\u52a0\u8f7d\u4efb\u52a1\u65f6\uff0c\u624d\u5c1d\u8bd5\u81ea\u5df1\u52a0\u8f7d\u3002\u8fd9\u6837\u5c42\u5c42\u9012\u5f52\uff0c\u4fdd\u8bc1\u7c7b\u7684\u552f\u4e00\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n

                \u4e3a\u4f55\u4f7f\u7528\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\uff1a<\/strong><\/p>\n

                  \n
                • \u907f\u514d\u7c7b\u51b2\u7a81\uff1a<\/strong> \u5982\u679c\u6bcf\u4e2a\u7c7b\u52a0\u8f7d\u5668\u90fd\u53ef\u4ee5\u81ea\u884c\u52a0\u8f7d\u7c7b\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7c7b\u7684\u91cd\u590d\u52a0\u8f7d\uff0c\u5f15\u53d1\u51b2\u7a81\u548c\u6df7\u4e71\u3002<\/li>\n
                • \u786e\u4fdd\u5b89\u5168\u6027\uff1a<\/strong> \u6838\u5fc3\u7c7b\u5e93\u7531\u542f\u52a8\u7c7b\u52a0\u8f7d\u5668\u52a0\u8f7d\uff0c\u53ef\u4ee5\u9632\u6b62\u7528\u6237\u901a\u8fc7\u81ea\u5b9a\u4e49\u7c7b\u5e93\u66ff\u6362\u6838\u5fc3\u7c7b\u5e93\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002<\/li>\n
                • \u63d0\u9ad8\u6548\u7387\uff1a<\/strong> \u901a\u8fc7\u59d4\u6d3e\u7ed9\u7236\u7c7b\u52a0\u8f7d\u5668\uff0c\u53ef\u4ee5\u5229\u7528\u5df2\u52a0\u8f7d\u7c7b\u7684\u7f13\u5b58\uff0c\u51cf\u5c11\u7c7b\u7684\u91cd\u590d\u52a0\u8f7d\uff0c\u63d0\u9ad8\u6548\u7387\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                  Java\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\u7684\u7c7b\u52a0\u8f7d\u5668\u91c7\u7528\u4e86\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b\uff08Delegation Model\uff09\u3002\u8fd9\u662f\u4e00\u79cd\u5c42\u6b21\u5316\u7684\u7c7b […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-11105","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=11105"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11105\/revisions"}],"predecessor-version":[{"id":16943,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11105\/revisions\/16943"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11105"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}