{"id":203032,"date":"2025-05-22T08:42:37","date_gmt":"2025-05-22T00:42:37","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203032\/"},"modified":"2025-05-22T08:42:37","modified_gmt":"2025-05-22T00:42:37","slug":"java%e5%87%bd%e6%95%b0%e4%b8%ad%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e7%9a%84%e6%ad%a3%e7%a1%ae%e6%96%b9%e6%b3%95%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203032\/","title":{"rendered":"Java\u51fd\u6570\u4e2d\u5f02\u5e38\u5904\u7406\u7684\u6b63\u786e\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Java\u51fd\u6570\u4e2d\u5f02\u5e38\u5904\u7406\u7684\u6b63\u786e\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300aJava\u51fd\u6570\u4e2d\u5f02\u5e38\u5904\u7406\u7684\u6b63\u786e\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

\u5728 Java \u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a\u4f7f\u7528 try-catch \u5757\u6355\u6349\u5f02\u5e38\uff0c\u5e76\u7f16\u5199\u76f8\u5e94\u7684\u5904\u7406\u4ee3\u7801\u3002\u5728\u65b9\u6cd5\u7b7e\u540d\u4e2d\u58f0\u660e\u53ef\u80fd\u5f15\u53d1\u7684\u5f02\u5e38\uff0c\u5f3a\u5236\u8c03\u7528\u4ee3\u7801\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\u3002<\/p>\n

<\/p>\n

\u5728 Java \u51fd\u6570\u4e2d\u6b63\u786e\u5904\u7406\u5f02\u5e38<\/strong><\/p>\n

\u5f15\u8a00<\/strong><\/p>\n

\u5f02\u5e38\u662f\u4ee3\u7801\u6267\u884c\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u53d1\u751f\u7684\u9519\u8bef\u6216\u5f02\u5e38\u60c5\u51b5\u3002\u6709\u6548\u5730\u5904\u7406\u5f02\u5e38\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5e2e\u52a9\u7a0b\u5e8f\u5458\u8bc6\u522b\u548c\u89e3\u51b3\u95ee\u9898\uff0c\u907f\u514d\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\u3002\u5728 Java \u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5904\u7406\u5f02\u5e38\uff0c\u4f46\u6709\u5fc5\u8981\u9075\u5faa\u6b63\u786e\u7684\u505a\u6cd5\u4ee5\u786e\u4fdd\u9c81\u68d2\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n

\u4f20\u7edf\u7684\u65b9\u6cd5\uff1atry-catch \u5757<\/strong><\/p>\n

\u4f20\u7edf\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 try-catch<\/code> \u5757\u3002\u5728 try<\/code> \u5757\u4e2d\uff0c\u7f16\u5199\u53ef\u80fd\u5f15\u53d1\u5f02\u5e38\u7684\u4ee3\u7801\u3002\u5982\u679c\u5f02\u5e38\u786e\u5b9e\u53d1\u751f\uff0c\u5c06\u6267\u884c\u76f8\u5e94\u7684 catch<\/code> \u5757\u3002\u4f8b\u5982\uff1a<\/p>\n

try {\n    \/\/ \u53ef\u80fd\u4f1a\u5f15\u53d1\u5f02\u5e38\u7684\u4ee3\u7801\n} catch (Exception e) {\n    \/\/ \u5f02\u5e38\u5904\u7406\u4ee3\u7801\n}<\/pre>\n
\u66f4\u4f18\u7684\u65b9\u6cd5\uff1a\u5f02\u5e38\u58f0\u660e<\/strong><\/p>\n
Java 7 \u5f15\u5165\u4e86\u5f02\u5e38\u58f0\u660e\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u4f18\u96c5\u7684\u65b9\u5f0f\u6765\u5904\u7406\u5f02\u5e38\u3002\u901a\u8fc7\u5728\u65b9\u6cd5\u7b7e\u540d\u4e2d\u58f0\u660e\u53ef\u80fd\u5f15\u53d1\u7684\u5f02\u5e38\uff0c\u7f16\u8bd1\u5668\u53ef\u4ee5\u5f3a\u5236\u8c03\u7528\u4ee3\u7801\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\u3002\u4f8b\u5982\uff1a<\/p>\n
public void myMethod() throws IOException {\n    \/\/ \u53ef\u80fd\u4f1a\u5f15\u53d1 IOException \u7684\u4ee3\u7801\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u8bfb\u53d6\u6587\u4ef6\u7684 Java \u65b9\u6cd5\u3002\u6587\u4ef6\u53ef\u80fd\u4e0d\u5b58\u5728\u6216\u4e0d\u53ef\u8bbf\u95ee\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u8fd9\u4e24\u79cd\u65b9\u6cd5\u6b63\u786e\u5904\u7406\u5f02\u5e38\u7684\u793a\u4f8b\uff1a<\/p>\n
\u4f7f\u7528 try-catch \u5757\uff1a<\/strong><\/p>\n
public static void readFile() {\n    try {\n        \/\/ \u8bfb\u53d6\u6587\u4ef6\n    } catch (FileNotFoundException e) {\n        \/\/ \u6587\u4ef6\u4e0d\u5b58\u5728\u7684\u5904\u7406\n    } catch (IOException e) {\n        \/\/ \u6587\u4ef6\u4e0d\u53ef\u8bbf\u95ee\u6216\u5176\u4ed6 I\/O \u5f02\u5e38\u7684\u5904\u7406\n    }\n}<\/pre>\n
\u4f7f\u7528\u5f02\u5e38\u58f0\u660e\uff1a<\/strong><\/p>\n
public static void readFile() throws FileNotFoundException, IOException {\n    \/\/ \u8bfb\u53d6\u6587\u4ef6\n}<\/pre>\n
\u8c03\u7528\u4ee3\u7801\u7684\u804c\u8d23<\/strong><\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528\u5f02\u5e38\u58f0\u660e\u65f6\uff0c\u8c03\u7528\u4ee3\u7801\u8d1f\u8d23\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\u3002\u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\uff0creadFile()<\/code> \u7684\u8c03\u7528\u8005\u5fc5\u987b\u6355\u83b7\u6216\u58f0\u660e FileNotFoundException<\/code> \u548c IOException<\/code> \u5f02\u5e38\uff1a<\/p>\n
try {\n    readFile();\n} catch (FileNotFoundException e) {\n    \/\/ \u6587\u4ef6\u4e0d\u5b58\u5728\u7684\u5904\u7406\n} catch (IOException e) {\n    \/\/ \u6587\u4ef6\u4e0d\u53ef\u8bbf\u95ee\u6216\u5176\u4ed6 I\/O \u5f02\u5e38\u7684\u5904\u7406\n}<\/pre>\n
\u5176\u4ed6\u8003\u8651\u56e0\u7d20<\/strong><\/p>\n
\u9664\u4e86\u6b63\u786e\u5904\u7406\u5f02\u5e38\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u56e0\u7d20\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n
    \n
  • \u4ec5\u5904\u7406\u60a8\u771f\u6b63\u9700\u8981\u5904\u7406\u7684\u5f02\u5e38\u3002<\/li>\n
  • \u63d0\u4f9b\u6709\u7528\u7684\u9519\u8bef\u6d88\u606f\uff0c\u5e2e\u52a9\u8c03\u8bd5\u3002<\/li>\n
  • \u8003\u8651\u4f7f\u7528\u65e5\u5fd7\u8bb0\u5f55\u6765\u8bb0\u5f55\u53d1\u751f\u7684\u5f02\u5e38\u3002<\/li>\n
  • \u5728\u9002\u5f53\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u81ea\u5b9a\u4e49\u5f02\u5e38\u3002<\/li>\n<\/ul>\n
    \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java\u51fd\u6570\u4e2d\u5f02\u5e38\u5904\u7406\u7684\u6b63\u786e\u65b9\u6cd5...<\/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-203032","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203032","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=203032"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203032\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}