{"id":17166,"date":"2025-04-22T08:31:22","date_gmt":"2025-04-22T00:31:22","guid":{"rendered":"https:\/\/92it.top\/?p=17166"},"modified":"2025-04-22T08:31:22","modified_gmt":"2025-04-22T00:31:22","slug":"%e4%b9%90%e8%a7%82%e9%94%81%e5%92%8c%e6%82%b2%e8%a7%82%e9%94%81%ef%bc%8c%e5%a6%82%e4%bd%95%e5%8c%ba%e5%88%86%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=17166","title":{"rendered":"\u4e50\u89c2\u9501\u548c\u60b2\u89c2\u9501\uff0c\u5982\u4f55\u533a\u5206\uff1f"},"content":{"rendered":"\n

\u8f6c\u8f7d\uff1a\u4e50\u89c2\u9501\u548c\u60b2\u89c2\u9501\uff0c\u5982\u4f55\u533a\u5206\uff1f<\/a><\/p>\n\n\n\n

\u60b2\u89c2\u9501<\/strong>\u548c\u4e50\u89c2\u9501<\/strong>\u662f\u5de5\u4f5c\u4e2d\u4e24\u79cd\u5e38\u89c1\u7684\u5e76\u53d1\u63a7\u5236\u673a\u5236\uff0c\u5b83\u4eec\u4e3b\u8981\u7528\u4e8e\u5904\u7406\u591a\u7ebf\u7a0b\u6216\u591a\u8fdb\u7a0b\u73af\u5883\u4e2d\u7684\u6570\u636e\u8bbf\u95ee\u51b2\u7a81\u95ee\u9898\uff0c\u5728\u6570\u636e\u5e93\u7cfb\u7edf\u3001\u5206\u5e03\u5f0f\u7cfb\u7edf\u548c\u591a\u7ebf\u7a0b\u7f16\u7a0b\u4e2d\u90fd\u6709\u5e7f\u6cdb\u5e94\u7528\u3002\u8fd9\u7bc7\u6587\u7ae0\uff0c\u6211\u4eec\u6765\u5206\u6790\u60b2\u89c2\u9501<\/strong>\u548c\u4e50\u89c2\u9501<\/strong>\u7684\u539f\u7406\u4ee5\u53ca\u4f7f\u7528\u573a\u666f\u3002<\/p>\n\n\n\n

\u60b2\u89c2\u9501<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u5b9a\u4e49<\/strong><\/p>\n\n\n\n

\u60b2\u89c2\u9501\uff08Pessimistic Lock\uff09\uff0c\u987e\u540d\u601d\u4e49\uff0c\u5c31\u662f\u6301\u6709\u60b2\u89c2\u72b6\u6001\uff0c\u5047\u8bbe\u51b2\u7a81\u4f1a\u9891\u7e41\u53d1\u751f\u7684\u9501\u673a\u5236\u3002\u6bcf\u6b21\u6570\u636e\u8bbf\u95ee\u65f6\uff0c\u90fd\u4f1a\u5148\u52a0\u9501\uff0c\u76f4\u5230\u64cd\u4f5c\u5b8c\u6210\u540e\u624d\u91ca\u653e\u9501\uff0c\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u5728\u9501\u6301\u6709\u671f\u95f4\uff0c\u5176\u4ed6\u7ebf\u7a0b\u65e0\u6cd5\u8bbf\u95ee\u8fd9\u6bb5\u6570\u636e\uff0c\u4ece\u800c\u907f\u514d\u4e86\u5e76\u53d1\u51b2\u7a81\u3002<\/p>\n\n\n\n

\u60b2\u89c2\u9501\u7684\u5b9e\u73b0\u901a\u5e38\u6709\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n\n\n\n

    \n
  • \u6570\u636e\u5e93<\/strong>\uff1a\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u60b2\u89c2\u9501\u901a\u5e38\u901a\u8fc7SQL\u8bed\u53e5\u5b9e\u73b0\uff0c\u4f8b\u5982SELECT ... FOR UPDATE<\/code>\u3002<\/li>\n\n\n\n
  • \u7f16\u7a0b\u8bed\u8a00<\/strong>\uff1a\u5728\u7f16\u7a0b\u8bed\u8a00\u4e2d\uff0c\u60b2\u89c2\u9501\u53ef\u4ee5\u4f7f\u7528\u4e92\u65a5\u9501\uff08Mutex\uff09\u6216\u540c\u6b65\u5757\uff08Synchronized Block\uff09\u6765\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n\n\n\n

    \u5e94\u7528\u573a\u666f<\/strong><\/p>\n\n\n\n

    \u9002\u7528\u4e8e\u5bf9\u6570\u636e\u5e76\u53d1\u51b2\u7a81\u975e\u5e38\u654f\u611f\u7684\u573a\u666f\uff0c\u4f8b\u5982\u94f6\u884c\u8f6c\u8d26\u64cd\u4f5c\u3001\u5e93\u5b58\u6263\u51cf\u7b49\u9700\u8981\u4e25\u683c\u6570\u636e\u4e00\u81f4\u6027\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n

    \u4f18\u7f3a\u70b9<\/strong><\/p>\n\n\n\n

      \n
    • \u4f18\u70b9<\/strong>\uff1a\u53ef\u4ee5\u5b8c\u5168\u907f\u514d\u5e76\u53d1\u51b2\u7a81\uff0c\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n\n\n\n
    • \u7f3a\u70b9<\/strong>\uff1a\u7531\u4e8e\u6bcf\u6b21\u8bbf\u95ee\u6570\u636e\u90fd\u9700\u8981\u52a0\u9501\u548c\u89e3\u9501\uff0c\u4f1a\u5bfc\u81f4\u6027\u80fd\u5f00\u9500\u8f83\u5927\uff0c\u7279\u522b\u662f\u5728\u5e76\u53d1\u91cf\u9ad8\u7684\u60c5\u51b5\u4e0b\uff0c\u5bb9\u6613\u9020\u6210\u9501\u7ade\u4e89\u548c\u6b7b\u9501\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n

      \u793a\u4f8b<\/strong><\/p>\n\n\n\n

      \u4e0b\u9762\u6211\u4eec\u7528 Java + MySQL \u5c55\u793a\u4e86\u4e00\u4e2a\u60b2\u89c2\u9501\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n\n\n\n

      \u5047\u8bbe\u6709\u4e00\u4e2a\u94f6\u884c\u8d26\u6237\u8868\uff08Account<\/code>\uff09\uff0c\u5305\u542b\u8d26\u6237 ID\u548c\u4f59\u989d\u4e24\u4e2a\u5b57\u6bb5\uff0c\u6211\u4eec\u5e0c\u671b\u5728\u66f4\u65b0\u8d26\u6237\u4f59\u989d\u65f6\u4f7f\u7528\u60b2\u89c2\u9501\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n

      \u6574\u4e2a\u8fd0\u884c\u6d41\u7a0b\u5206\u4e3a\u4ee5\u4e0b4\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n

        \n
      1. \u83b7\u53d6\u8d26\u6237\u4fe1\u606f\u5e76\u9501\u5b9a\u8bb0\u5f55\uff08SELECT ... FOR UPDATE<\/code>\uff09\u3002<\/li>\n\n\n\n
      2. \u8ba1\u7b97\u65b0\u7684\u4f59\u989d\u3002<\/li>\n\n\n\n
      3. \u66f4\u65b0\u8d26\u6237\u4fe1\u606f\u3002<\/li>\n\n\n\n
      4. \u7531\u4e8e\u4f7f\u7528\u4e86@Transactional<\/code>\u6ce8\u89e3\uff0c\u6574\u4e2a\u65b9\u6cd5\u6267\u884c\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d\uff0c\u786e\u4fdd\u5728\u4e8b\u52a1\u63d0\u4ea4\u4e4b\u524d\uff0c\u9501\u5b9a\u7684\u8bb0\u5f55\u4e0d\u4f1a\u88ab\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u3002<\/li>\n<\/ol>\n\n\n\n

        \u6570\u636e\u5e93\u8868\u7ed3\u6784<\/strong><\/p>\n\n\n\n

        CREATE TABLE Account (\n    id INT PRIMARY KEY,\n    balance DECIMAL(10, 2) NOT NULL\n);\n<\/pre>\n\n\n\n
        Java\u5b9e\u73b0\u793a\u4f8b<\/strong><\/p>\n\n\n\n
        1. Account\u7c7b<\/p>\n\n\n\n
        public class Account {\n    private int id;\n    private BigDecimal balance;\n\n    \/\/ Getters and Setters\n}\n<\/pre>\n\n\n\n
        2. AccountMapper\u63a5\u53e3<\/p>\n\n\n\n
        public interface AccountMapper {\n    Account getAccountByIdForUpdate(int id);\n    void updateAccount(Account account);\n}\n<\/pre>\n\n\n\n
        3. AccountMapper\u7684SQL\u5b9e\u73b0<\/p>\n\n\n\n
        <mapper namespace=\"com.example.AccountMapper\">\n    <select id=\"getAccountByIdForUpdate\" resultType=\"com.example.Account\">\n        SELECT id, balance FROM Account WHERE id = #{id} FOR UPDATE\n    <\/select>\n\n    <update id=\"updateAccount\">\n        UPDATE Account\n        SET balance = #{balance}\n        WHERE id = #{id}\n    <\/update>\n<\/mapper>\n\n4. AccountServi<\/pre>\n\n\n\n
        4. AccountService\u7c7b<\/p>\n\n\n\n
        import org.springframework.transaction.annotation.Transactional;\n\npublicclass AccountService {\n\n    private AccountMapper accountMapper;\n\n    public AccountService(AccountMapper accountMapper) {\n        this.accountMapper = accountMapper;\n    }\n\n    @Transactional\n    public void updateAccountBalance(int accountId, BigDecimal amount) {\n        \/\/ \u83b7\u53d6\u8d26\u6237\u4fe1\u606f\u5e76\u9501\u5b9a\u8bb0\u5f55\n        Account account = accountMapper.getAccountByIdForUpdate(accountId);\n        if (account == null) {\n            thrownew RuntimeException(\"Account not found\");\n        }\n\n        \/\/ \u66f4\u65b0\u4f59\u989d\n        account.setBalance(account.getBalance().add(amount));\n\n        \/\/ \u66f4\u65b0\u8d26\u6237\u4fe1\u606f\n        accountMapper.updateAccount(account);\n    }\n}\n<\/pre>\n\n\n\n
        \u793a\u4f8b\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n
          \n
        1. Account\u7c7b<\/strong>\uff1a\u5305\u542b\u8d26\u6237ID\u548c\u4f59\u989d\u7684Java\u7c7b\u3002<\/li>\n\n\n\n
        2. AccountMapper\u63a5\u53e3<\/strong>\uff1a\u5b9a\u4e49\u4e86\u83b7\u53d6\u8d26\u6237\u4fe1\u606f\uff08\u5e26\u9501\u5b9a\uff09\u548c\u66f4\u65b0\u8d26\u6237\u4fe1\u606f\u7684\u65b9\u6cd5\u3002<\/li>\n\n\n\n
        3. AccountMapper\u7684SQL\u5b9e\u73b0<\/strong>\uff1a\u4f7f\u7528MyBatis\u6216\u5176\u4ed6ORM\u6846\u67b6\uff0c\u5b9a\u4e49\u4e86SQL\u67e5\u8be2\u548c\u66f4\u65b0\u8bed\u53e5\u3002\u6ce8\u610f\u5728\u67e5\u8be2\u8bed\u53e5\u4e2d\u4f7f\u7528FOR UPDATE<\/code>\u6765\u9501\u5b9a\u8bb0\u5f55\u3002<\/li>\n\n\n\n
        4. AccountService\u7c7b<\/strong>\uff1a\u4e1a\u52a1\u903b\u8f91\u7c7b\uff0c\u5728\u66f4\u65b0\u8d26\u6237\u4f59\u989d\u65f6\uff0c\u5148\u83b7\u53d6\u5f53\u524d\u8d26\u6237\u4fe1\u606f\u5e76\u9501\u5b9a\u8bb0\u5f55\uff0c\u7136\u540e\u66f4\u65b0\u4f59\u989d\u5e76\u63d0\u4ea4\u66f4\u65b0\u3002<\/li>\n<\/ol>\n\n\n\n
          \u8fd9\u79cd\u673a\u5236\u786e\u4fdd\u4e86\u5728\u64cd\u4f5c\u5b8c\u6210\u4e4b\u524d\uff0c\u5176\u4ed6\u7ebf\u7a0b\u65e0\u6cd5\u4fee\u6539\u9501\u5b9a\u7684\u8bb0\u5f55\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u60b2\u89c2\u9501\u7684\u5e76\u53d1\u63a7\u5236\u3002<\/p>\n\n\n\n
          \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n\n\n\n
            \n
          1. \u4e8b\u52a1\u7ba1\u7406<\/strong>\uff1a\u4f7f\u7528\u60b2\u89c2\u9501\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u5728\u4e8b\u52a1\u63d0\u4ea4\u4e4b\u524d\u9501\u4e0d\u4f1a\u88ab\u91ca\u653e\uff0c\u56e0\u6b64\u5fc5\u987b\u5728\u4e8b\u52a1\u4e2d\u4f7f\u7528\u3002<\/li>\n\n\n\n
          2. \u6b7b\u9501\u98ce\u9669<\/strong>\uff1a\u60b2\u89c2\u9501\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6b7b\u9501\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\u6b7b\u9501\u68c0\u6d4b\u548c\u5904\u7406\u3002<\/li>\n\n\n\n
          3. \u6027\u80fd\u5f71\u54cd<\/strong>\uff1a\u7531\u4e8e\u6bcf\u6b21\u64cd\u4f5c\u90fd\u9700\u8981\u52a0\u9501\u548c\u89e3\u9501\uff0c\u6027\u80fd\u53ef\u80fd\u4f1a\u53d7\u5230\u5f71\u54cd\uff0c\u7279\u522b\u662f\u5728\u9ad8\u5e76\u53d1\u60c5\u51b5\u4e0b\u3002<\/li>\n<\/ol>\n\n\n\n
            \u901a\u8fc7\u4e86\u89e3\u60b2\u89c2\u9501\u7684\u5177\u4f53\u5b9e<\/p>\n\n\n\n
            \u4e50\u89c2\u9501<\/strong><\/p>\n\n\n\n
            \n\n\n\n
            \u5b9a\u4e49<\/strong><\/p>\n\n\n\n
            \u4e50\u89c2\u9501\uff08Optimistic Lock\uff09\u662f\u4e00\u79cd\u5047\u8bbe\u51b2\u7a81\u4e0d\u4f1a\u9891\u7e41\u53d1\u751f\u7684\u9501\u673a\u5236\u3002\u6bcf\u6b21\u6570\u636e\u8bbf\u95ee\u65f6\uff0c\u4e0d\u4f1a\u52a0\u9501\uff0c\u800c\u662f\u5728\u66f4\u65b0\u6570\u636e\u65f6\u68c0\u67e5\u662f\u5426\u6709\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\u8fc7\u6570\u636e\u3002\u5982\u679c\u68c0\u6d4b\u5230\u51b2\u7a81\uff08\u6570\u636e\u88ab\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\u8fc7\uff09\uff0c\u5219\u91cd\u8bd5\u64cd\u4f5c\u6216\u62a5\u9519\u3002<\/p>\n\n\n\n
            \u4e50\u89c2\u9501\u901a\u5e38\u5b9e\u73b0\u65b9\u5f0f\u6709\u4ee5\u4e0b\u4e24\u79cd\uff1a<\/p>\n\n\n\n
              \n
            • \u7248\u672c\u53f7\u673a\u5236<\/strong>\uff1a\u6bcf\u6b21\u8bfb\u53d6\u6570\u636e\u65f6\uff0c\u8bfb\u53d6\u4e00\u4e2a\u7248\u672c\u53f7\uff0c\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u68c0\u67e5\u7248\u672c\u53f7\u662f\u5426\u53d8\u5316\uff0c\u5982\u679c\u6ca1\u6709\u53d8\u5316\uff0c\u5219\u66f4\u65b0\u6210\u529f\uff0c\u5426\u5219\u91cd\u8bd5\u3002<\/li>\n\n\n\n
            • \u65f6\u95f4\u6233\u673a\u5236<\/strong>\uff1a\u7c7b\u4f3c\u7248\u672c\u53f7\u673a\u5236\uff0c\u901a\u8fc7\u65f6\u95f4\u6233\u6765\u68c0\u6d4b\u6570\u636e\u662f\u5426\u88ab\u4fee\u6539\u3002<\/li>\n<\/ul>\n\n\n\n
              \u5e94\u7528\u573a\u666f<\/strong><\/p>\n\n\n\n
              \u9002\u7528\u4e8e\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f\uff0c\u4f8b\u5982\u7528\u6237\u8bc4\u8bba\u7cfb\u7edf\u3001\u793e\u4ea4\u5a92\u4f53\u70b9\u8d5e\u7b49\uff0c\u8fd9\u4e9b\u573a\u666f\u4e0b\u5e76\u53d1\u51b2\u7a81\u6982\u7387\u8f83\u4f4e\u3002<\/p>\n\n\n\n
              \u4f18\u7f3a\u70b9<\/strong><\/p>\n\n\n\n
                \n
              • \u4f18\u70b9<\/strong>\uff1a\u907f\u514d\u4e86\u9891\u7e41\u7684\u9501\u64cd\u4f5c\uff0c\u6027\u80fd\u8f83\u597d\uff0c\u9002\u5408\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f\u3002<\/li>\n\n\n\n
              • \u7f3a\u70b9<\/strong>\uff1a\u5728\u9ad8\u5e76\u53d1\u5199\u64cd\u4f5c\u7684\u573a\u666f\u4e0b\uff0c\u91cd\u8bd5\u53ef\u80fd\u4f1a\u9891\u7e41\u53d1\u751f\uff0c\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ul>\n\n\n\n
                \u793a\u4f8b<\/strong><\/p>\n\n\n\n
                \u4e50\u89c2\u9501\u7684\u5b9e\u73b0\u901a\u5e38\u6d89\u53ca\u5230\u7248\u672c\u53f7\uff08\u6216\u65f6\u95f4\u6233\uff09\u673a\u5236\uff0c\u4ee5\u4fbf\u5728\u66f4\u65b0\u6570\u636e\u65f6\u68c0\u6d4b\u662f\u5426\u53d1\u751f\u4e86\u5e76\u53d1\u4fee\u6539\u3002\u6211\u4eec\u8fd8\u662f\u7528\u4e0a\u9762\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728 Java\u4e2d\u4f7f\u7528\u4e50\u89c2\u9501\u8fdb\u884c\u5e76\u53d1\u63a7\u5236\u3002<\/p>\n\n\n\n
                \u5047\u8bbe\u6709\u4e00\u4e2a\u94f6\u884c\u8d26\u6237\u8868\uff08Account<\/code>\uff09\uff0c\u5305\u542b\u8d26\u6237ID\u3001\u4f59\u989d\u548c\u7248\u672c\u53f7\u4e09\u4e2a\u5b57\u6bb5\uff0c\u73b0\u5728\u5e0c\u671b\u5728\u66f4\u65b0\u8d26\u6237\u4f59\u989d\u65f6\u4f7f\u7528\u4e50\u89c2\u9501\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n
                \u6574\u4e2a\u8fd0\u884c\u6d41\u7a0b\u603b\u7ed3\u4e3a\u4e0b\u9762 3\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n
                  \n
                1. \u83b7\u53d6\u8d26\u6237\u4fe1\u606f\uff0c\u5305\u62ec\u5f53\u524d\u7684\u7248\u672c\u53f7\u3002<\/li>\n\n\n\n
                2. \u8ba1\u7b97\u65b0\u7684\u4f59\u989d\uff0c\u5e76\u589e\u52a0\u7248\u672c\u53f7\u3002<\/li>\n\n\n\n
                3. \u5c1d\u8bd5\u66f4\u65b0\u8d26\u6237\u4fe1\u606f\uff0c\u5982\u679c\u7248\u672c\u53f7\u5339\u914d\u5219\u66f4\u65b0\u6210\u529f\uff0c\u5426\u5219\u66f4\u65b0\u5931\u8d25\u5e76\u629b\u51fa\u5f02\u5e38\u3002<\/li>\n<\/ol>\n\n\n\n
                  \u6570\u636e\u5e93\u8868\u7ed3\u6784<\/strong><\/p>\n\n\n\n
                  CREATE TABLE Account (\n    id INT PRIMARY KEY,\n    balance DECIMAL(10, 2) NOT NULL,\n    version INT NOT NULL\n);\n<\/pre>\n\n\n\n
                  Java\u5b9e\u73b0\u793a\u4f8b<\/strong><\/p>\n\n\n\n
                  1. Account\u7c7b<\/p>\n\n\n\n
                  public class Account {\n    private int id;\n    private BigDecimal balance;\n    private int version;\n\n    \/\/ Getters and Setters\n}\n<\/pre>\n\n\n\n
                  2. AccountMapper\u63a5\u53e3<\/p>\n\n\n\n
                  public interface AccountMapper {\n    Account getAccountById(int id);\n    int updateAccount(Account account);\n}\n<\/pre>\n\n\n\n
                  3. AccountMapper\u7684SQL\u5b9e\u73b0<\/p>\n\n\n\n
                  <mapper namespace=\"com.example.AccountMapper\">\n    <select id=\"getAccountById\" resultType=\"com.example.Account\">\n        SELECT id, balance, version FROM Account WHERE id = #{id}\n    <\/select>\n\n    <update id=\"updateAccount\">\n        UPDATE Account\n        SET balance = #{balance}, version = #{version}\n        WHERE id = #{id} AND version = #{oldVersion}\n    <\/update>\n<\/mapper>\n<\/pre>\n\n\n\n
                  4. AccountService\u7c7b<\/p>\n\n\n\n
                  public class AccountService {\n\n    private AccountMapper accountMapper;\n\n    public AccountService(AccountMapper accountMapper) {\n        this.accountMapper = accountMapper;\n    }\n\n    public void updateAccountBalance(int accountId, BigDecimal amount) {\n        \/\/ \u83b7\u53d6\u8d26\u6237\u4fe1\u606f\n        Account account = accountMapper.getAccountById(accountId);\n        if (account == null) {\n            thrownew RuntimeException(\"Account not found\");\n        }\n\n        \/\/ \u8bb0\u5f55\u5f53\u524d\u7248\u672c\u53f7\n        int currentVersion = account.getVersion();\n\n        \/\/ \u66f4\u65b0\u4f59\u989d\n        account.setBalance(account.getBalance().add(amount));\n        \/\/ \u66f4\u65b0\u7248\u672c\u53f7\n        account.setVersion(currentVersion + 1);\n\n        \/\/ \u5c1d\u8bd5\u66f4\u65b0\u8d26\u6237\u4fe1\u606f\n        int updatedRows = accountMapper.updateAccount(account);\n        if (updatedRows == 0) {\n            \/\/ \u66f4\u65b0\u5931\u8d25\uff0c\u53ef\u80fd\u662f\u7531\u4e8e\u5e76\u53d1\u4fee\u6539\u5bfc\u81f4\u7684\u7248\u672c\u53f7\u4e0d\u5339\u914d\n            thrownew OptimisticLockException(\"Update failed due to concurrent modification\");\n        }\n    }\n}\n<\/pre>\n\n\n\n
                  \u793a\u4f8b\u8bf4\u660e\uff1a<\/p>\n\n\n\n
                    \n
                  1. Account\u7c7b<\/strong>\uff1a\u5305\u542b\u8d26\u6237ID\u3001\u4f59\u989d\u548c\u7248\u672c\u53f7\u7684Java\u7c7b\u3002<\/li>\n\n\n\n
                  2. AccountMapper\u63a5\u53e3<\/strong>\uff1a\u5b9a\u4e49\u4e86\u83b7\u53d6\u8d26\u6237\u4fe1\u606f\u548c\u66f4\u65b0\u8d26\u6237\u4fe1\u606f\u7684\u65b9\u6cd5\u3002<\/li>\n\n\n\n
                  3. AccountMapper\u7684SQL\u5b9e\u73b0<\/strong>\uff1a\u4f7f\u7528MyBatis\u6216\u5176\u4ed6ORM\u6846\u67b6\uff0c\u5b9a\u4e49\u4e86SQL\u67e5\u8be2\u548c\u66f4\u65b0\u8bed\u53e5\u3002\u6ce8\u610f\u5728\u66f4\u65b0\u8bed\u53e5\u4e2d\u4f7f\u7528\u4e86\u65e7\u7248\u672c\u53f7\u6765\u68c0\u6d4b\u5e76\u53d1\u4fee\u6539\u3002<\/li>\n\n\n\n
                  4. AccountService\u7c7b<\/strong>\uff1a\u4e1a\u52a1\u903b\u8f91\u7c7b\uff0c\u5728\u66f4\u65b0\u8d26\u6237\u4f59\u989d\u65f6\uff0c\u5148\u83b7\u53d6\u5f53\u524d\u8d26\u6237\u4fe1\u606f\u53ca\u5176\u7248\u672c\u53f7\uff0c\u7136\u540e\u5c1d\u8bd5\u66f4\u65b0\u4f59\u989d\u548c\u7248\u672c\u53f7\u3002\u5982\u679c\u66f4\u65b0\u5931\u8d25\uff0c\u629b\u51fa\u4e00\u4e2aOptimisticLockException<\/code>\u3002<\/li>\n<\/ol>\n\n\n\n
                    \u533a\u522b\u603b\u7ed3<\/strong><\/p>\n\n\n\n
                    \n\n\n\n
                    1. \u5047\u8bbe\u524d\u63d0<\/strong>\uff1a<\/p>\n\n\n\n
                      \n
                    • \u60b2\u89c2\u9501\u5047\u8bbe\u51b2\u7a81\u4f1a\u9891\u7e41\u53d1\u751f\uff0c\u9700\u8981\u52a0\u9501\u4fdd\u62a4\u3002<\/li>\n\n\n\n
                    • \u4e50\u89c2\u9501\u5047\u8bbe\u51b2\u7a81\u4e0d\u4f1a\u9891\u7e41\u53d1\u751f\uff0c\u901a\u8fc7\u7248\u672c\u53f7\u6216\u65f6\u95f4\u6233\u6765\u68c0\u6d4b\u51b2\u7a81\u3002<\/li>\n<\/ul>\n\n\n\n
                      2.\u6027\u80fd<\/strong>\uff1a<\/p>\n\n\n\n
                        \n
                      • \u60b2\u89c2\u9501\u6027\u80fd\u8f83\u4f4e\uff0c\u56e0\u4e3a\u6bcf\u6b21\u64cd\u4f5c\u90fd\u9700\u8981\u52a0\u9501\u548c\u89e3\u9501\u3002<\/li>\n\n\n\n
                      • \u4e50\u89c2\u9501\u6027\u80fd\u8f83\u9ad8\uff0c\u4f46\u5728\u9ad8\u5e76\u53d1\u5199\u64cd\u4f5c\u4e0b\u53ef\u80fd\u4f1a\u9891\u7e41\u91cd\u8bd5\uff0c\u5f71\u54cd\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n
                        3.\u5e94\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n
                          \n
                        • \u60b2\u89c2\u9501\u9002\u7528\u4e8e\u5e76\u53d1\u51b2\u7a81\u9ad8\u3001\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u4e25\u683c\u7684\u573a\u666f\u3002<\/li>\n\n\n\n
                        • \u4e50\u89c2\u9501\u9002\u7528\u4e8e\u5e76\u53d1\u51b2\u7a81\u4f4e\u3001\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
                          \u8f6c\u8f7d\uff1a\u4e50\u89c2\u9501\u548c\u60b2\u89c2\u9501\uff0c\u5982\u4f55\u533a\u5206\uff1f \u60b2\u89c2\u9501\u548c\u4e50\u89c2\u9501\u662f\u5de5\u4f5c\u4e2d\u4e24\u79cd\u5e38\u89c1\u7684\u5e76\u53d1\u63a7\u5236\u673a\u5236\uff0c\u5b83\u4eec\u4e3b\u8981\u7528\u4e8e\u5904\u7406\u591a\u7ebf\u7a0b\u6216\u591a\u8fdb\u7a0b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17166"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17166"}],"version-history":[{"count":1,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17166\/revisions"}],"predecessor-version":[{"id":17167,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17166\/revisions\/17167"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}