{"id":202692,"date":"2025-05-22T09:34:43","date_gmt":"2025-05-22T01:34:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202692\/"},"modified":"2025-05-22T09:34:43","modified_gmt":"2025-05-22T01:34:43","slug":"java-%e5%87%bd%e6%95%b0%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e4%b8%ad%e7%9a%84%e7%ba%bf%e7%a8%8b%e5%ae%89%e5%85%a8%e9%97%ae%e9%a2%98%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202692\/","title":{"rendered":"Java \u51fd\u6570\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java \u51fd\u6570\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u5982\u4f55\u89e3\u51b3\uff1f<\/h1>\n<p>\u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava \u51fd\u6570\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u5982\u4f55\u89e3\u51b3\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p>\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\uff0c\u51fd\u6570\u5f02\u5e38\u5904\u7406\u53ef\u80fd\u4f1a\u51fa\u73b0\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\uff0c\u5177\u4f53\u5982\u4e0b\uff1a\u5f53\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u629b\u51fa\u5f02\u5e38\u65f6\uff0c\u8bbf\u95ee\u5f02\u5e38\u5bf9\u8c61\u53ef\u80fd\u5bfc\u81f4\u51b2\u7a81\u3002\u89e3\u51b3\u65b9\u6848\u5305\u62ec\uff1a\u4f7f\u7528 ThreadLocal \u5b58\u50a8\u5f02\u5e38\u5bf9\u8c61\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u6709\u81ea\u5df1\u7684\u5f02\u5e38\u5b9e\u4f8b\u3002\u4f7f\u7528 synchronized \u5757\u4fdd\u62a4\u5f02\u5e38\u5904\u7406\u4ee3\u7801\uff0c\u786e\u4fdd\u4e00\u6b21\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u3002\u5bf9\u4e8e\u9700\u8981\u539f\u5b50\u64cd\u4f5c\u7684\u5f02\u5e38\u5904\u7406\uff0c\u53ef\u4ee5\u4f7f\u7528\u539f\u5b50\u53d8\u91cf\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729932518671cace62b8fc.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u53ca\u5176\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u51fd\u6570\u5f02\u5e38\u5904\u7406\u662f\u5904\u7406\u51fd\u6570\u6267\u884c\u671f\u95f4\u5f02\u5e38\u60c5\u51b5\u7684\u597d\u65b9\u6cd5\u3002\u4f46\u662f\uff0c\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\uff0c\u5982\u679c\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5904\u7406\u540c\u4e00\u4e2a\u51fd\u6570\uff0c\u5219\u53ef\u80fd\u51fa\u73b0\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002<\/p>\n<p><strong>\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898<\/strong><\/p>\n<p>\u5f53\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u51fd\u6570\u4e2d\u7684\u4e34\u754c\u533a\uff08\u5171\u4eab\u5bf9\u8c61\u6216\u8d44\u6e90\uff09\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\u5728\u5f02\u5e38\u5904\u7406\u4e2d\uff0c\u4e34\u754c\u533a\u901a\u5e38\u662f\u5f02\u5e38\u5bf9\u8c61\u672c\u8eab\u3002\u5f53\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u629b\u51fa\u5f02\u5e38\u65f6\uff0c\u5982\u679c\u5f02\u5e38\u5bf9\u8c61\u4e0d\u6b63\u786e\u5730\u5904\u7406\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u635f\u574f\u6216\u6b7b\u9501\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 threadlocal \u5b58\u50a8\u5f02\u5e38\uff1a<\/strong>\u5c06\u5f02\u5e38\u5bf9\u8c61\u5b58\u50a8\u5728 ThreadLocal \u53d8\u91cf\u4e2d\u53ef\u4ee5\u786e\u4fdd\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u5f02\u5e38\u5b9e\u4f8b\uff0c\u4ece\u800c\u907f\u514d\u4e86\u591a\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\u7684\u51b2\u7a81\u3002<\/li>\n<li><strong>\u4f7f\u7528 synchronized \u5757\uff1a<\/strong>\u5c06\u5f02\u5e38\u5904\u7406\u4ee3\u7801\u653e\u5728 synchronized \u5757\u4e2d\u53ef\u4ee5\u786e\u4fdd\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u5728\u4efb\u4f55\u65f6\u5019\u8bbf\u95ee\u8be5\u5757\uff0c\u4ece\u800c\u786e\u4fdd\u5f02\u5e38\u5bf9\u8c61\u7684\u8bbf\u95ee\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/li>\n<li><strong>\u4f7f\u7528\u539f\u5b50\u53d8\u91cf\uff1a<\/strong>\u5bf9\u4e8e\u9700\u8981\u8fdb\u884c\u539f\u5b50\u64cd\u4f5c\uff08\u5982\u8ba1\u6570\u5668\u6216\u72b6\u6001\u6807\u5fd7\uff09\u7684\u5f02\u5e38\u5904\u7406\uff0c\u53ef\u4ee5\u4f7f\u7528\u539f\u5b50\u53d8\u91cf\u6765\u786e\u4fdd\u64cd\u4f5c\u7684\u7ebf\u7a0b\u5b89\u5168\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 ThreadLocal \u5b58\u50a8\u5f02\u5e38\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>public class ThreadSafeExceptionHandling {\n\n    private static final ThreadLocal&lt;Throwable&gt; exceptionHolder = new ThreadLocal&lt;&gt;();\n\n    public static void main(String[] args) {\n        Thread thread1 = new Thread(() -&gt; {\n            try {\n                throw new RuntimeException(\"Exception in thread 1\");\n            } catch (Exception e) {\n                exceptionHolder.set(e);\n            }\n        });\n\n        Thread thread2 = new Thread(() -&gt; {\n            try {\n                throw new RuntimeException(\"Exception in thread 2\");\n            } catch (Exception e) {\n                exceptionHolder.set(e);\n            }\n        });\n\n        thread1.start();\n        thread2.start();\n\n        thread1.join();\n        thread2.join();\n\n        Throwable exception1 = exceptionHolder.get();\n        Throwable exception2 = exceptionHolder.get();\n\n        System.out.println(\"Exception in thread 1: \" + exception1.getMessage());\n        System.out.println(\"Exception in thread 2: \" + exception2.getMessage());\n    }\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f02\u5e38\u5bf9\u8c61\u5b58\u50a8\u5728 ThreadLocal \u53d8\u91cf\u4e2d\uff0c\u786e\u4fdd\u4e86\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u5f02\u5e38\u5b9e\u4f8b\u3002\u8fd9\u6837\uff0c\u5373\u4f7f\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u629b\u51fa\u5f02\u5e38\uff0c\u4e5f\u4e0d\u4f1a\u51fa\u73b0\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300aJava \u51fd\u6570\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u5982\u4f55\u89e3\u51b3\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u51fd\u6570\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u7ebf\u7a0b\u5b89&#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-202692","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202692","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=202692"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202692\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}