{"id":165277,"date":"2024-05-08T15:12:35","date_gmt":"2024-05-08T07:12:35","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/165277.html"},"modified":"2024-05-08T15:12:39","modified_gmt":"2024-05-08T07:12:39","slug":"java%e5%9c%a8%e4%bc%81%e4%b8%9a%e7%ba%a7%e5%bc%80%e5%8f%91%e4%b8%ad%e5%88%b0%e5%ba%95%e8%af%a5%e6%80%8e%e4%b9%88%e5%a4%84%e7%90%86%e5%bc%82%e5%b8%b8%e5%91%a2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/165277.html","title":{"rendered":"java\u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\u5230\u5e95\u8be5\u600e\u4e48\u5904\u7406\u5f02\u5e38\u5462"},"content":{"rendered":"

\"java\u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\u5230\u5e95\u8be5\u600e\u4e48\u5904\u7406\u5f02\u5e38\u5462\"<\/p>\n

\u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\u5904\u7406Java\u5f02\u5e38\u7684\u6700\u4f73\u5b9e\u8df5\u5305\u62ec\u89c4\u8303\u5316\u5f02\u5e38\u7ba1\u7406\u3001\u660e\u786e\u5f02\u5e38\u5c42\u6b21\u3001\u5408\u7406\u4f7f\u7528\u68c0\u67e5\u578b\u4e0e\u975e\u68c0\u67e5\u578b\u5f02\u5e38\u3001\u4fdd\u8bc1\u5f02\u5e38\u5b89\u5168\u3001\u8bb0\u5f55\u8be6\u5c3d\u5f02\u5e38\u65e5\u5fd7<\/strong>\u3002\u5728\u8fd9\u4e9b\u5b9e\u8df5\u4e2d\uff0c\u7279\u522b\u9700\u8981\u6ce8\u610f\u7684\u662f\u8bb0\u5f55\u8be6\u5c3d\u5f02\u5e38\u65e5\u5fd7<\/strong>\uff0c\u8fd9\u4e0d\u4ec5\u5bf9\u95ee\u9898\u8ffd\u8e2a\u548c\u8c03\u8bd5\u81f3\u5173\u91cd\u8981\uff0c\u8fd8\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5206\u6790\u5f02\u5e38\u51fa\u73b0\u7684\u6a21\u5f0f\uff0c\u4ece\u800c\u4f18\u5316\u4ee3\u7801\u548c\u63d0\u5347\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u89c4\u8303\u5316\u5f02\u5e38\u7ba1\u7406<\/h3>\n<\/p>\n

\u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\uff0c\u5efa\u7acb\u7edf\u4e00\u7684\u5f02\u5e38\u5904\u7406\u89c4\u8303\u81f3\u5173\u91cd\u8981\u3002\u8fd9\u610f\u5473\u7740\u5e94\u8be5\u6709\u4e00\u5957\u6e05\u6670\u7684\u5f02\u5e38\u5206\u7c7b\u4f53\u7cfb\uff0c\u4ee5\u53ca\u4e00\u81f4\u7684\u5904\u7406\u65b9\u5f0f\u3002<\/p>\n<\/p>\n

1. \u8bbe\u8ba1\u5f02\u5e38\u4f53\u7cfb<\/strong>\uff1a\u4f01\u4e1a\u7ea7\u9879\u76ee\u5e94\u8bbe\u8ba1\u4e00\u4e2a\u5305\u542b\u4e1a\u52a1\u548c\u6280\u672f\u5f02\u5e38\u7684\u4f53\u7cfb\u7ed3\u6784\uff0c\u4e1a\u52a1\u5f02\u5e38\u6307\u90a3\u4e9b\u9884\u671f\u5185\u7684\u5f02\u5e38\u60c5\u51b5\uff0c\u5982\u201c\u7528\u6237\u4e0d\u5b58\u5728\u201d\uff1b\u800c\u6280\u672f\u5f02\u5e38\u5219\u6db5\u76d6\u5982\u6570\u636e\u5e93\u8bbf\u95ee\u51fa\u9519\u3001\u7f51\u7edc\u5f02\u5e38\u7b49\u6280\u672f\u95ee\u9898\u3002<\/p>\n<\/p>\n

2. \u7edf\u4e00\u5f02\u5e38\u5904\u7406<\/strong>\uff1a\u4e00\u822c\u4f7f\u7528\u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668\u6765\u6355\u83b7\u672a\u88ab\u6355\u83b7\u7684\u5f02\u5e38\u3002\u8fd9\u53ef\u4ee5\u5728\u7528\u6237\u5c42\u63d0\u4f9b\u4e00\u4e2a\u53cb\u597d\u7684\u9519\u8bef\u53cd\u9988\uff0c\u540c\u65f6\u786e\u4fdd\u540e\u7aef\u8bb0\u5f55\u4e0b\u8db3\u591f\u7684\u9519\u8bef\u4fe1\u606f\u7528\u4e8e\u8c03\u8bd5\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u660e\u786e\u5f02\u5e38\u5c42\u6b21<\/h3>\n<\/p>\n

\u5728\u4f01\u4e1a\u5e94\u7528\u4e2d\uff0c\u4fdd\u6301\u5f02\u5e38\u5904\u7406\u7684\u5206\u5c42\u6027\u662f\u5fc5\u8981\u7684\uff0c\u8fd9\u6709\u52a9\u4e8e\u9694\u79bb\u9519\u8bef\u5e76\u7b80\u5316\u8c03\u8bd5\u8fc7\u7a0b\u3002<\/p>\n<\/p>\n

1. \u5206\u5c42\u5904\u7406<\/strong>\uff1a\u5728\u6570\u636e\u8bbf\u95ee\u5c42\u3001\u4e1a\u52a1\u903b\u8f91\u5c42\u548c\u8868\u793a\u5c42\u90fd\u5e94\u8be5\u6709\u660e\u786e\u7684\u5f02\u5e38\u5904\u7406\u7b56\u7565\u3002\u6bcf\u4e00\u5c42\u53ea\u5904\u7406\u5176\u8d1f\u8d23\u7684\u5f02\u5e38\uff0c\u5e76\u4e14\u9002\u5f53\u5730\u5c06\u5f02\u5e38\u5305\u88c5\u540e\u5411\u4e0a\u629b\u51fa\u3002<\/p>\n<\/p>\n

2. \u5c42\u4e0e\u5c42\u95f4\u7684\u901a\u4fe1<\/strong>\uff1a\u5f02\u5e38\u4e0d\u4ec5\u4ec5\u662f\u95ee\u9898\u7684\u6807\u8bc6\uff0c\u4e5f\u662f\u5c42\u4e0e\u5c42\u4e4b\u95f4\u7684\u901a\u4fe1\u65b9\u5f0f\u3002\u8bbe\u8ba1\u6e05\u6670\u7684\u5f02\u5e38\u5c42\u6b21\u6709\u52a9\u4e8e\u51b3\u5b9a\u54ea\u4e9b\u5f02\u5e38\u9700\u8981\u4e0a\u62a5\uff0c\u54ea\u4e9b\u53ef\u4ee5\u5728\u5f53\u524d\u5c42\u89e3\u51b3\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u5408\u7406\u4f7f\u7528\u68c0\u67e5\u578b\u4e0e\u975e\u68c0\u67e5\u578b\u5f02\u5e38<\/h3>\n<\/p>\n

Java\u4e2d\u7684\u5f02\u5e38\u5206\u4e3a\u68c0\u67e5\u578b\u5f02\u5e38\uff08Checked Exceptions\uff09\u548c\u975e\u68c0\u67e5\u578b\u5f02\u5e38\uff08Unchecked Exceptions\uff09\u3002<\/p>\n<\/p>\n

1. \u68c0\u67e5\u578b\u5f02\u5e38<\/strong>\uff1a\u7528\u4e8e\u90a3\u4e9b\u53ef\u6062\u590d\u7684\u6761\u4ef6\u4e0b\uff0c\u8981\u6c42\u8c03\u7528\u8005\u5fc5\u987b\u5904\u7406\u7684\u573a\u666f\u3002\u6bd4\u5982\uff0c\u6587\u4ef6\u8bfb\u5199\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u51fa\u73b0\u7684IOException\u3002<\/p>\n<\/p>\n

2. \u975e\u68c0\u67e5\u578b\u5f02\u5e38<\/strong>\uff1a\u9002\u7528\u4e8e\u7a0b\u5e8f\u9519\u8bef\uff0c\u5982\u7a7a\u6307\u9488\u5f02\u5e38\uff08NullPointerException\uff09\u548c\u6570\u7ec4\u4e0b\u6807\u8d8a\u754c\u5f02\u5e38\uff08ArrayIndexOutOfBoundsException\uff09\u3002\u975e\u68c0\u67e5\u578b\u5f02\u5e38\u901a\u5e38\u662f\u7a0b\u5e8f\u903b\u8f91\u9519\u8bef\uff0c\u5e94\u8be5\u901a\u8fc7\u4ee3\u7801\u6539\u8fdb\u4e88\u4ee5\u89e3\u51b3\u3002<\/p>\n<\/p>\n

\u56db\u3001\u4fdd\u8bc1\u5f02\u5e38\u5b89\u5168<\/h3>\n<\/p>\n

\u5f02\u5e38\u5b89\u5168\u610f\u5473\u7740\u4f60\u7684\u7a0b\u5e8f\u5728\u9762\u5bf9\u9519\u8bef\u65f6\uff0c\u4ecd\u7136\u4fdd\u6301\u4e00\u81f4\u7684\u72b6\u6001\uff0c\u65e2\u4e0d\u4f1a\u53d1\u751f\u8d44\u6e90\u6cc4\u9732\uff0c\u4e5f\u4e0d\u4f1a\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n<\/p>\n

1. \u4e8b\u52a1\u7ba1\u7406<\/strong>\uff1a\u786e\u4fdd\u5f53\u5f02\u5e38\u53d1\u751f\u65f6\uff0c\u80fd\u591f\u56de\u6eda\u81f3\u7a33\u5b9a\u72b6\u6001\uff0c\u7279\u522b\u662f\u5728\u6570\u636e\u5e93\u64cd\u4f5c\u4e2d\u3002<\/p>\n<\/p>\n

2. \u8d44\u6e90\u7ba1\u7406<\/a><\/strong>\uff1a\u4f7f\u7528try-with-resources\u6216finally\u5757\u6765\u786e\u4fdd\u8d44\u6e90\u7684\u5173\u95ed\uff0c\u907f\u514d\u8d44\u6e90\u6cc4\u9732\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u8bb0\u5f55\u8be6\u5c3d\u5f02\u5e38\u65e5\u5fd7<\/h3>\n<\/p>\n

\u5f53\u5f02\u5e38\u53d1\u751f\u65f6\uff0c\u5e94\u8be5\u8bb0\u5f55\u5c3d\u53ef\u80fd\u591a\u7684\u4fe1\u606f\uff0c\u4f46\u4e5f\u8981\u6ce8\u610f\u654f\u611f\u4fe1\u606f\u7684\u4fdd\u62a4\u3002<\/p>\n<\/p>\n

1. \u5f02\u5e38\u4fe1\u606f\u8bb0\u5f55<\/strong>\uff1a\u5305\u62ec\u5f02\u5e38\u7c7b\u578b\u3001\u9519\u8bef\u6d88\u606f\u3001\u5806\u6808\u8ddf\u8e2a\u4ee5\u53ca\u53d1\u751f\u5f02\u5e38\u65f6\u7684\u5173\u952e\u53d8\u91cf\u503c\u3002<\/p>\n<\/p>\n

2. \u654f\u611f\u4fe1\u606f\u4fdd\u62a4<\/strong>\uff1a\u5728\u8bb0\u5f55\u65e5\u5fd7\u65f6\uff0c\u8981\u6ce8\u610f\u4e0d\u8981\u8f93\u51fa\u654f\u611f\u4fe1\u606f\uff0c\u5982\u7528\u6237\u5bc6\u7801\u3001\u4e2a\u4eba\u8eab\u4efd\u4fe1\u606f\u7b49\u3002<\/p>\n<\/p>\n

\u5f02\u5e38\u5904\u7406<\/strong>\u662f\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\u7684\u91cd\u8981\u73af\u8282\uff0c\u8fd9\u4e0d\u4ec5\u4fdd\u969c\u4e86\u7a0b\u5e8f\u7684\u7a33\u5b9a\u8fd0\u884c\uff0c\u4e5f\u4f7f\u5f97\u7ef4\u62a4\u548c\u8c03\u8bd5\u53d8\u5f97\u66f4\u52a0\u9ad8\u6548\u3002\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\u7684\u5b9e\u65bd\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u5347Java\u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\u7684\u5f02\u5e38\u5904\u7406\u80fd\u529b\u3002<\/p>\n<\/p>\n

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

1. \u4e3a\u4ec0\u4e48\u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\u5f02\u5e38\u5904\u7406\u5f88\u91cd\u8981\uff1f<\/strong>
\n\u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\uff0c\u5f02\u5e38\u5904\u7406\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u5904\u7406\u7a0b\u5e8f\u8fd0\u884c\u65f6\u7684\u9519\u8bef\u548c\u5f02\u5e38\u60c5\u51b5\uff0c\u4fdd\u8bc1\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5f02\u5e38\u5904\u7406\u53ef\u4ee5\u8ba9\u6211\u4eec\u6355\u83b7\u5e76\u5904\u7406\u51fa\u73b0\u7684\u5f02\u5e38\uff0c\u6216\u8005\u5c06\u5f02\u5e38\u4f20\u9012\u7ed9\u8c03\u7528\u8005\u8fdb\u884c\u5904\u7406\uff0c\u4ece\u800c\u907f\u514d\u7a0b\u5e8f\u56e0\u4e3a\u5f02\u5e38\u800c\u5d29\u6e83\u6216\u8005\u4ea7\u751f\u9519\u8bef\u7ed3\u679c\u3002\u540c\u65f6\uff0c\u5408\u7406\u7684\u5f02\u5e38\u5904\u7406\u8fd8\u53ef\u4ee5\u8ba9\u6211\u4eec\u66f4\u597d\u5730\u5bf9\u7a0b\u5e8f\u7684\u9519\u8bef\u60c5\u51b5\u8fdb\u884c\u65e5\u5fd7\u8bb0\u5f55\u548c\u62a5\u8b66\uff0c\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u53ca\u65f6\u53d1\u73b0\u548c\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n

2. \u5728\u4f01\u4e1a\u7ea7\u5f00\u53d1\u4e2d\u5982\u4f55\u5408\u7406\u5904\u7406\u5f02\u5e38\uff1f<\/strong>
\n\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5408\u7406\u5730\u4f7f\u7528try-catch\u8bed\u53e5\u6765\u6355\u83b7\u53ef\u80fd\u51fa\u73b0\u5f02\u5e38\u7684\u4ee3\u7801\u5757\uff0c\u5e76\u5728catch\u5757\u4e2d\u5bf9\u5f02\u5e38\u8fdb\u884c\u5904\u7406\u3002\u5f02\u5e38\u5904\u7406\u7684\u65b9\u5f0f\u53ef\u4ee5\u5305\u62ec\u6253\u5370\u9519\u8bef\u4fe1\u606f\u3001\u8bb0\u5f55\u65e5\u5fd7\u3001\u8fd4\u56de\u81ea\u5b9a\u4e49\u7684\u9519\u8bef\u7801\u7b49\u3002\u5176\u6b21\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5f02\u5e38\u5411\u4e0a\u629b\u51fa\uff0c\u8ba9\u8c03\u7528\u8005\u6765\u5904\u7406\u5f02\u5e38\uff0c\u7279\u522b\u662f\u5728\u5e95\u5c42\u4e1a\u52a1\u903b\u8f91\u4e2d\uff0c\u53ef\u4ee5\u5c06\u5f02\u5e38\u5411\u4e0a\u629b\u51fa\u4ee5\u4fbf\u66f4\u9ad8\u5c42\u6b21\u7684\u4ee3\u7801\u80fd\u591f\u5904\u7406\u3002\u53e6\u5916\uff0c\u5408\u7406\u4f7f\u7528finally\u5757\u53ef\u4ee5\u4fdd\u8bc1\u8d44\u6e90\u7684\u91ca\u653e\uff0c\u65e0\u8bba\u662f\u5426\u4ea7\u751f\u5f02\u5e38\u90fd\u80fd\u5f97\u5230\u6267\u884c\u3002\u5728\u5904\u7406\u5f02\u5e38\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u60c5\u51b5\uff0c\u9009\u62e9\u5408\u9002\u7684\u5f02\u5e38\u5904\u7406\u7b56\u7565\uff0c\u4f8b\u5982\u4e8b\u52a1\u56de\u6eda\u3001\u91cd\u8bd5\u3001\u4f18\u96c5\u964d\u7ea7\u7b49\u3002<\/p>\n

3. \u6709\u6ca1\u6709\u4e00\u4e9b\u5f02\u5e38\u5904\u7406\u7684\u6700\u4f73\u5b9e\u8df5\u53ef\u4ee5\u53c2\u8003\uff1f<\/strong>
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