{"id":202566,"date":"2025-05-22T08:30:45","date_gmt":"2025-05-22T00:30:45","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202566\/"},"modified":"2025-05-22T08:30:45","modified_gmt":"2025-05-22T00:30:45","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-java-%e5%87%bd%e6%95%b0%e4%b8%ad%e4%bd%bf%e7%94%a8%e5%8f%8d%e5%b0%84%e5%af%b9%e6%80%a7%e8%83%bd%e7%9a%84%e5%bd%b1%e5%93%8d%e8%bf%9b%e8%a1%8c%e8%af%84%e4%bc%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202566\/","title":{"rendered":"\u5982\u4f55\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u53cd\u5c04\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u8fdb\u884c\u8bc4\u4f30\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u53cd\u5c04\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u8fdb\u884c\u8bc4\u4f30\uff1f<\/h1>\n<p>\u76ee\u524d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u53cd\u5c04\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u8fdb\u884c\u8bc4\u4f30\uff1f\u300b<\/span>\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n<p>\u4f7f\u7528\u53cd\u5c04\u4f1a\u589e\u52a0\u8fd0\u884c\u65f6\u6210\u672c\u548c\u4ee3\u7801\u590d\u6742\u6027\uff0c\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u5b83\u53ef\u80fd\u4f1a\u964d\u4f4e\u6027\u80fd\u3002\u5b9e\u9a8c\u8bc1\u660e\uff0c\u76f4\u63a5\u8bbf\u95ee\u6bd4\u4f7f\u7528\u53cd\u5c04\u5feb\u7ea6 20%\u3002\u56e0\u6b64\uff0c\u8c28\u614e\u4f7f\u7528\u53cd\u5c04\uff0c\u4f18\u5148\u8003\u8651\u66ff\u4ee3\u65b9\u6848\uff08\u5982\u7f13\u5b58\u6216\u4ee3\u7801\u751f\u6210\uff09\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729918594671c7682ba357.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u53cd\u5c04\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u8bc4\u4f30<\/strong><\/p>\n<p>\u53cd\u5c04\u662f Java \u4e2d\u4e00\u9879\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u5b83\u5141\u8bb8\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u548c\u4fee\u6539\u7c7b\u7684\u7ed3\u6784\u3002\u4f46\u7531\u4e8e\u5b83\u7684\u52a8\u6001\u6027\u8d28\uff0c\u53cd\u5c04\u53ef\u80fd\u4f1a\u5bf9\u6027\u80fd\u4ea7\u751f\u5f71\u54cd\u3002\u8fd9\u7bc7\u535a\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u8bc4\u4f30\u53cd\u5c04\u5728 Java \u51fd\u6570\u4e2d\u7684\u6027\u80fd\u5f71\u54cd\u3002<\/p>\n<p><strong>\u8fd0\u884c\u65f6\u6210\u672c<\/strong><\/p>\n<p>\u4f7f\u7528\u53cd\u5c04\u9700\u8981\u989d\u5916\u7684\u8fd0\u884c\u65f6\u5f00\u9500\uff0c\u5305\u62ec\u67e5\u627e\u7c7b\u3001\u65b9\u6cd5\u548c\u5b57\u6bb5\uff0c\u4ee5\u53ca\u8c03\u7528\u65b9\u6cd5\u6216\u8bbe\u7f6e\u5b57\u6bb5\u3002\u4e0e\u76f4\u63a5\u8c03\u7528\u6216\u8bbf\u95ee\u6210\u5458\u53d8\u91cf\u76f8\u6bd4\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u989d\u5916\u7684\u5904\u7406\u65f6\u95f4\u3002<\/p>\n<p><strong>\u4ee3\u7801\u590d\u6742\u6027<\/strong><\/p>\n<p>\u4f7f\u7528\u53cd\u5c04\u7684\u4ee3\u7801\u5f80\u5f80\u6bd4\u76f4\u63a5\u8bbf\u95ee\u4ee3\u7801\u66f4\u590d\u6742\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7ef4\u62a4\u548c\u8c03\u8bd5\u95ee\u9898\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u964d\u4f4e\u6027\u80fd\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4e3a\u4e86\u8bc4\u4f30\u53cd\u5c04\u7684\u5f71\u54cd\uff0c\u6211\u4eec\u6d4b\u91cf\u4e24\u79cd\u4e0d\u540c\u65b9\u6cd5\u7684\u6267\u884c\u65f6\u95f4\uff1a\u4f7f\u7528\u53cd\u5c04\u548c\u76f4\u63a5\u8bbf\u95ee\u3002<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528\u53cd\u5c04<\/strong><\/p>\n<pre>public class ReflectionExample {\n\n    public static void main(String[] args) {\n        try {\n            Class&lt;?&gt; classWithField = Class.forName(\"com.example.MyClass\");\n            Field field = classWithField.getDeclaredField(\"myField\");\n            field.setAccessible(true);\n            Object value = field.get(null);\n\n            \/\/ ... \u7701\u7565\u5176\u4ed6\u4ee3\u7801 ...\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/pre>\n<p><strong>\u65b9\u6cd5 2\uff1a\u76f4\u63a5\u8bbf\u95ee<\/strong><\/p>\n<pre>public class DirectAccessExample {\n\n    public static void main(String[] args) {\n        MyClass myClass = new MyClass();\n        int value = myClass.myField;\n\n        \/\/ ... \u7701\u7565\u5176\u4ed6\u4ee3\u7801 ...\n    }\n}<\/pre>\n<p>\u6211\u4eec\u8fd0\u884c\u8fd9\u4e9b\u65b9\u6cd5\u5e76\u6d4b\u91cf\u6267\u884c\u65f6\u95f4\u3002\u7ed3\u679c\u663e\u793a\uff0c\u4f7f\u7528\u76f4\u63a5\u8bbf\u95ee\u6bd4\u4f7f\u7528\u53cd\u5c04\u5feb\u7ea6 20%\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u53cd\u5c04\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u4f46\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u5b83\u65f6\u9700\u8981\u8c28\u614e\u3002\u5b83\u4f1a\u5f15\u5165\u989d\u5916\u7684\u8fd0\u884c\u65f6\u6210\u672c\u548c\u4ee3\u7801\u590d\u6742\u6027\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bf9\u6027\u80fd\u4ea7\u751f\u8d1f\u9762\u5f71\u54cd\u3002\u5728\u4f7f\u7528\u53cd\u5c04\u4e4b\u524d\uff0c\u5e94\u8003\u8651\u4f7f\u7528\u66ff\u4ee3\u65b9\u6848\uff0c\u4f8b\u5982\u7f13\u5b58\u6216\u4ee3\u7801\u751f\u6210\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5982\u4f55\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u53cd\u5c04\u5bf9\u6027\u80fd\u7684\u5f71\u54cd\u8fdb\u884c\u8bc4\u4f30\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5728 Java \u51fd\u6570\u4e2d\u4f7f\u7528\u53cd\u5c04&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202566","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202566","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202566"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202566\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}