{"id":202564,"date":"2025-05-22T08:18:47","date_gmt":"2025-05-22T00:18:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202564\/"},"modified":"2025-05-22T08:18:47","modified_gmt":"2025-05-22T00:18:47","slug":"%e5%87%bd%e6%95%b0%e9%87%8d%e8%bd%bd%e4%b8%8e%e5%a4%9a%e6%80%81%e5%9c%a8java%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e4%b8%ad%e7%9a%84%e5%85%b3%e7%b3%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202564\/","title":{"rendered":"\u51fd\u6570\u91cd\u8f7d\u4e0e\u591a\u6001\u5728Java\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u5173\u7cfb"},"content":{"rendered":"

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

\u51fd\u6570\u91cd\u8f7d\u4e0e\u591a\u6001\u5728Java\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u5173\u7cfb<\/h1>\n

\u6709\u5fd7\u8005\uff0c\u4e8b\u7adf\u6210\uff01\u5982\u679c\u4f60\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u90a3\u4e48\u672c\u6587\u300a\u51fd\u6570\u91cd\u8f7d\u4e0e\u591a\u6001\u5728Java\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u5173\u7cfb\u300b<\/span>\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff01\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec<\/span>\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/span><\/p>\n

<\/p>\n

\u51fd\u6570\u91cd\u8f7d\u4e0e\u591a\u6001\u5728 Java \u5f02\u5e38\u5904\u7406\u4e2d\u7684\u5173\u7cfb<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

\u51fd\u6570\u91cd\u8f7d\u548c\u591a\u6001\u662f Java \u4e2d\u5f3a\u5927\u7684\u7279\u6027\uff0c\u5b83\u4eec\u5728\u5f02\u5e38\u5904\u7406\u4e2d\u626e\u6f14\u7740\u81f3\u5173\u91cd\u8981\u7684\u89d2\u8272\u3002\u51fd\u6570\u91cd\u8f7d\u5141\u8bb8\u60a8\u521b\u5efa\u5177\u6709\u76f8\u540c\u540d\u79f0\u4f46\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7684\u591a\u4e2a\u51fd\u6570\uff0c\u800c\u591a\u6001\u5219\u5141\u8bb8\u60a8\u8c03\u7528\u7ee7\u627f\u5c42\u6b21\u7ed3\u6784\u4e2d\u5bf9\u8c61\u7684\u76f8\u540c\u65b9\u6cd5\uff0c\u5373\u4f7f\u8fd9\u4e9b\u5bf9\u8c61\u5c5e\u4e8e\u4e0d\u540c\u7684\u5b50\u7c7b\u3002<\/p>\n

\u51fd\u6570\u91cd\u8f7d\u5728\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n

\u51fd\u6570\u91cd\u8f7d\u53ef\u7528\u4e8e\u63d0\u4f9b\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u5f02\u5e38\u7684\u7279\u5b9a\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e24\u4e2a\u4e0d\u540c\u7248\u672c\u7684 printMessage()<\/code> \u65b9\u6cd5\uff0c\u5176\u4e2d\u4e00\u4e2a\u63a5\u53d7 IOException<\/code> \u800c\u53e6\u4e00\u4e2a\u63a5\u53d7 SQLException<\/code>\u3002<\/p>\n

public void printMessage(IOException e) {\n  System.out.println(\"I\/O Error: \" + e.getMessage());\n}\n\npublic void printMessage(SQLException e) {\n  System.out.println(\"SQL Error: \" + e.getMessage());\n}<\/pre>\n
\u901a\u8fc7\u51fd\u6570\u91cd\u8f7d\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u9488\u5bf9\u4e0d\u540c\u5f02\u5e38\u7c7b\u578b\u7684\u81ea\u5b9a\u4e49\u5f02\u5e38\u5904\u7406\u903b\u8f91\uff0c\u4ece\u800c\u63d0\u4f9b\u66f4\u8be6\u7ec6\u548c\u6709\u7528\u7684\u9519\u8bef\u6d88\u606f\u3002<\/p>\n
\u591a\u6001\u5728\u5f02\u5e38\u5904\u7406\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n
\u591a\u6001\u5141\u8bb8\u60a8\u5728\u629b\u51fa\u5f02\u5e38\u65f6\u4f7f\u7528\u7236\u7c7b\u5f15\u7528\u3002\u8fd9\u610f\u5473\u7740\u60a8\u53ef\u4ee5\u629b\u51fa\u4e00\u4e2a\u7236\u7c7b\u5f02\u5e38\uff0c\u4f8b\u5982 Exception<\/code>\uff0c\u7136\u540e\u7531\u5b50\u7c7b\uff08\u4f8b\u5982 IOException<\/code> \u6216 SQLException<\/code>\uff09\u6765\u5904\u7406\u5b83\u3002<\/p>\n
public class ParentClass {\n  public void doSomething() throws Exception {\n    \/\/ ...\n  }\n}\n\npublic class ChildClass extends ParentClass {\n  @Override\n  public void doSomething() throws IOException {\n    \/\/ ...\n  }\n}<\/pre>\n
\u901a\u8fc7\u591a\u6001\uff0c\u5f53\u8c03\u7528\u7236\u7c7b\u65b9\u6cd5\u65f6\uff0c\u60a8\u4f1a\u629b\u51fa\u4e00\u4e2a\u6765\u81ea\u5b50\u7c7b\u7684\u5f02\u5e38\uff0c\u5e76\u4e14\u8be5\u5f02\u5e38\u53ef\u4ee5\u901a\u8fc7\u7236\u7c7b\u5f15\u7528\u8fdb\u884c\u6355\u83b7\u548c\u5904\u7406\u3002\u8fd9\u5141\u8bb8\u60a8\u5728\u4e0d\u77e5\u9053\u5177\u4f53\u5f02\u5e38\u7c7b\u578b\u7684\u60c5\u51b5\u4e0b\u7f16\u5199\u66f4\u901a\u7528\u7684\u5f02\u5e38\u5904\u7406\u4ee3\u7801\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528\u51fd\u6570\u91cd\u8f7d\u548c\u591a\u6001\u5904\u7406\u5f02\u5e38\u7684\u5b9e\u6218\u6848\u4f8b\uff1a<\/p>\n
import java.io.IOException;\nimport java.sql.SQLException;\n\npublic class ExceptionHandlingDemo {\n\n  public static void main(String[] args) {\n    try {\n      readFile();\n    } catch (IOException e) {\n      handleIOException(e);\n    } catch (SQLException e) {\n      handleSQLException(e);\n    } catch (Exception e) {\n      handleGenericException(e);\n    }\n  }\n\n  private static void readFile() throws IOException, SQLException {\n    \/\/ \u6a21\u62df\u6587\u4ef6\u8bfb\u53d6\u64cd\u4f5c\uff0c\u53ef\u80fd\u629b\u51fa IOException \u6216 SQLException\n  }\n\n  private static void handleIOException(IOException e) {\n    \/\/ \u5904\u7406 I\/O \u5f02\u5e38\n  }\n\n  private static void handleSQLException(SQLException e) {\n    \/\/ \u5904\u7406 SQL \u5f02\u5e38\n  }\n\n  private static void handleGenericException(Exception e) {\n    \/\/ \u5904\u7406\u5176\u4ed6\u6240\u6709\u5f02\u5e38\n  }\n}<\/pre>\n
\u5728\u8be5\u793a\u4f8b\u4e2d\uff0creadFile()<\/code> \u65b9\u6cd5\u53ef\u80fd\u629b\u51fa IOException<\/code> \u6216 SQLException<\/code>\uff0c\u8fd9\u4e24\u79cd\u5f02\u5e38\u90fd\u662f Exception<\/code> \u7684\u5b50\u7c7b\u3002\u901a\u8fc7\u4f7f\u7528\u51fd\u6570\u91cd\u8f7d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u9488\u5bf9\u8fd9\u4e24\u79cd\u5f02\u5e38\u7c7b\u578b\u7684\u81ea\u5b9a\u4e49\u5904\u7406\u65b9\u6cd5\u3002\u901a\u8fc7\u5229\u7528\u591a\u6001\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7236\u7c7b\u5f02\u5e38\u5f15\u7528\u6765\u6355\u83b7\u548c\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\u3002\u8fd9\u6837\uff0c\u5373\u4f7f\u4e0d\u77e5\u9053\u5177\u4f53\u5f02\u5e38\u7c7b\u578b\uff0c\u6211\u4eec\u4e5f\u80fd\u7f16\u5199\u51fa\u66f4\u901a\u7528\u7684\u5f02\u5e38\u5904\u7406\u4ee3\u7801\u3002<\/p>\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":"
\u51fd\u6570\u91cd\u8f7d\u4e0e\u591a\u6001\u5728Java\u5f02\u5e38\u5904\u7406...<\/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-202564","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202564","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=202564"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202564\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202564"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202564"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202564"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}