{"id":202804,"date":"2025-05-22T09:37:38","date_gmt":"2025-05-22T01:37:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202804\/"},"modified":"2025-05-22T09:37:38","modified_gmt":"2025-05-22T01:37:38","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%9c%a8-java-%e4%b8%ad%e6%ad%a3%e7%a1%ae%e5%a4%84%e7%90%86%e5%bc%82%e5%b8%b8%e5%be%88%e9%87%8d%e8%a6%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202804\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u5f88\u91cd\u8981\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u4e3a\u4ec0\u4e48\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u5f88\u91cd\u8981\uff1f<\/h1>\n<p>\u5c0f\u4f19\u4f34\u4eec\u5bf9\u6587\u7ae0\u7f16\u7a0b\u611f\u5174\u8da3\u5417\uff1f\u662f\u5426\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff1f\u5982\u679c\u662f\uff0c\u90a3\u4e48\u672c\u6587\u300a\u4e3a\u4ec0\u4e48\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u5f88\u91cd\u8981\uff1f\u300b\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff0c\u672c\u7bc7\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\u3002\u5728\u4e4b\u540e\u7684\u6587\u7ae0\u4e2d\u4e5f\u4f1a\u591a\u591a\u5206\u4eab\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729943722671cd8aa06ce7.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4e3a\u4ec0\u4e48\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u5f88\u91cd\u8981\uff1f<\/strong><\/p>\n<p>\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u662f\u81f3\u5173\u91cd\u8981\u7684\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5e2e\u52a9\u4f60\u521b\u5efa\u5065\u58ee\u3001\u53ef\u9760\u548c\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u3002\u5f02\u5e38\u5904\u7406\u5141\u8bb8\u4f60\u5904\u7406\u4ee3\u7801\u6267\u884c\u671f\u95f4\u53d1\u751f\u7684\u5f02\u5e38\u60c5\u51b5\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u6587\u4ef6\u627e\u4e0d\u5230\u9519\u8bef<\/li>\n<li>NullPointerException<\/li>\n<li>\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u9519\u8bef<\/li>\n<\/ul>\n<p><strong>\u597d\u5904<\/strong><\/p>\n<p>\u6b63\u786e\u5904\u7406\u5f02\u5e38\u53ef\u4ee5\u5e26\u6765\u4ee5\u4e0b\u597d\u5904\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u9ad8\u4ee3\u7801\u5065\u58ee\u6027\uff1a<\/strong> \u5f02\u5e38\u5904\u7406\u53ef\u4ee5\u9632\u6b62\u4f60\u7684\u4ee3\u7801\u5728\u9047\u5230\u5f02\u5e38\u60c5\u51b5\u65f6\u5d29\u6e83\uff0c\u4ece\u800c\u63d0\u9ad8\u5176\u5065\u58ee\u6027\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff1a<\/strong> \u5f02\u5e38\u5904\u7406\u53ef\u4ee5\u4f7f\u4f60\u7684\u4ee3\u7801\u66f4\u6613\u4e8e\u9605\u8bfb\u3001\u7406\u89e3\u548c\u7ef4\u62a4\uff0c\u56e0\u4e3a\u5b83\u660e\u786e\u5730\u5904\u7406\u4e86\u6f5c\u5728\u7684\u9519\u8bef\u3002<\/li>\n<li><strong>\u63d0\u4f9b\u6709\u7528\u7684\u9519\u8bef\u4fe1\u606f\uff1a<\/strong> \u5f02\u5e38\u53ef\u4ee5\u63d0\u4f9b\u6709\u5173\u9519\u8bef\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8fd9\u6709\u52a9\u4e8e\u8c03\u8bd5\u548c\u89e3\u51b3\u95ee\u9898\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\uff1a<\/strong> \u6b63\u786e\u5904\u7406\u5f02\u5e38\u53ef\u4ee5\u9632\u6b62\u7528\u6237\u770b\u5230\u5197\u957f\u7684\u5806\u6808\u8ddf\u8e2a\u6216\u5e94\u7528\u7a0b\u5e8f\u7a81\u7136\u5173\u95ed\uff0c\u4ece\u800c\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u5b9e\u6218\u6848\u4f8b\uff0c\u8bf4\u660e\u5982\u4f55\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\uff1a<\/p>\n<pre>try {\n  \/\/ \u5728\u6b64\u4ee3\u7801\u5757\u4e2d\u53ef\u80fd\u53d1\u751f\u5f02\u5e38\u7684\u4ee3\u7801\n} catch (FileNotFoundException e) {\n  \/\/ FileNotFoundException \u7684\u5904\u7406\u4ee3\u7801\n} catch (IOException e) {\n  \/\/ IOException \u7684\u5904\u7406\u4ee3\u7801\n} catch (Exception e) {\n  \/\/ \u6700\u540e\u4e00\u6b65\u6355\u83b7\u6240\u6709\u5176\u4ed6\u5f02\u5e38\n} finally {\n  \/\/ \u65e0\u8bba\u662f\u5426\u53d1\u751f\u5f02\u5e38\uff0c\u90fd\u4f1a\u6267\u884c\u7684\u4ee3\u7801\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c<code>try<\/code> \u5757\u5305\u542b\u4e86\u53ef\u80fd\u4f1a\u5f15\u53d1 <code>FileNotFoundException<\/code> \u6216 <code>IOException<\/code> \u7684\u4ee3\u7801\u3002\u5982\u679c\u53d1\u751f\u4efb\u4f55\u8fd9\u4e9b\u5f02\u5e38\uff0c\u4ee3\u7801\u5c06\u8df3\u8f6c\u5230\u9002\u5f53\u7684 <code>catch<\/code> \u5757\u3002\u6700\u540e\uff0c<code>finally<\/code> \u5757\u59cb\u7ec8\u6267\u884c\uff0c\u65e0\u8bba\u662f\u5426\u53d1\u751f\u5f02\u5e38\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u5065\u58ee\u6027\u3001\u53ef\u8bfb\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002\u901a\u8fc7\u4f7f\u7528 <code>try-catch<\/code> \u8bed\u53e5\u548c <code>finally<\/code> \u5757\uff0c\u4f60\u53ef\u4ee5\u4f18\u96c5\u5730\u5904\u7406\u5f02\u5e38\u5e76\u5728\u4f60\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u521b\u5efa\u66f4\u5065\u58ee\u7684\u4ee3\u7801\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u5f88\u91cd\u8981\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8ejava,\u5f02\u5e38\u5904\u7406\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e3a\u4ec0\u4e48\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02&#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-202804","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202804","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=202804"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202804\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}