{"id":76033,"date":"2026-02-13T19:57:32","date_gmt":"2026-02-13T11:57:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/76033.html"},"modified":"2026-02-13T19:57:32","modified_gmt":"2026-02-13T11:57:32","slug":"mybatis-plus-%e9%80%bb%e8%be%91%e5%88%a0%e9%99%a4%e5%af%bc%e8%87%b4%e5%94%af%e4%b8%80%e7%b4%a2%e5%bc%95%e5%86%b2%e7%aa%81%e7%9a%84%e8%a7%a3%e5%86%b3%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/76033.html","title":{"rendered":"MyBatis-Plus \u903b\u8f91\u5220\u9664\u5bfc\u81f4\u552f\u4e00\u7d22\u5f15\u51b2\u7a81\u7684\u89e3\u51b3\u65b9\u6848"},"content":{"rendered":"

MyBatis-Plus \u903b\u8f91\u5220\u9664\u5bfc\u81f4\u552f\u4e00\u7d22\u5f15\u51b2\u7a81\u7684\u89e3\u51b3\u65b9\u6848<\/h2>\n

\u524d\u8a00<\/h3>\n

\u6700\u8fd1\u5728\u5f00\u53d1\u4e00\u4e2a Spring Boot \u8bb0\u8d26\u7cfb\u7edf\u65f6，\u9047\u5230\u4e86\u4e00\u4e2a\u5173\u4e8e MyBatis-Plus \u903b\u8f91\u5220\u9664\u7684\u5751：\u7528\u6237\u5220\u9664\u67d0\u4e2a\u7c7b\u578b\u540e，\u518d\u6b21\u6dfb\u52a0\u540c\u540d\u7c7b\u578b\u65f6\u63d0\u793a"\u6570\u636e\u91cd\u590d"\u3002\u660e\u660e\u524d\u7aef\u67e5\u8be2\u4e0d\u5230\u8fd9\u4e2a\u7c7b\u578b，\u4e3a\u4ec0\u4e48\u8fd8\u4f1a\u51b2\u7a81\u5462？<\/p>\n

\u7ecf\u8fc7\u4e00\u756a\u6392\u67e5，\u53d1\u73b0\u662f MyBatis-Plus \u903b\u8f91\u5220\u9664\u673a\u5236\u4e0e\u6570\u636e\u5e93\u552f\u4e00\u7d22\u5f15\u7684\u51b2\u7a81\u5bfc\u81f4\u7684\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u5206\u6790\u95ee\u9898\u539f\u56e0，\u5e76\u63d0\u4f9b\u5b8c\u6574\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n

\n

\u4e00\u3001\u95ee\u9898\u590d\u73b0<\/h3>\n

1.1 \u4e1a\u52a1\u573a\u666f<\/h4>\n

\u5728\u8bb0\u8d26\u7cfb\u7edf\u4e2d，\u7528\u6237\u53ef\u4ee5\u81ea\u5b9a\u4e49\u6536\u652f\u7c7b\u578b（\u5982"\u9910\u996e"\u3001\u201c\u4ea4\u901a\u201d\u3001"\u8fd8\u94b1"\u7b49）\u3002\u4e3a\u4e86\u9632\u6b62\u8bef\u5220，\u6211\u4f7f\u7528\u4e86 MyBatis-Plus \u7684\u903b\u8f91\u5220\u9664\u529f\u80fd\u3002<\/p>\n

\u64cd\u4f5c\u6b65\u9aa4：<\/p>\n

  • \u7528\u6237\u6dfb\u52a0"\u8fd8\u94b1（\u6536\u5165）"\u7c7b\u578b<\/li>\n
  • \u7528\u6237\u5220\u9664"\u8fd8\u94b1（\u6536\u5165）"\u7c7b\u578b<\/li>\n
  • \u7528\u6237\u518d\u6b21\u6dfb\u52a0"\u8fd8\u94b1（\u6536\u5165）"\u7c7b\u578b \u63d0\u793a：\u6570\u636e\u91cd\u590d，\u8bf7\u68c0\u67e5\u8f93\u5165<\/li>\n

    1.2 \u8be6\u7ec6\u590d\u73b0\u8fc7\u7a0b<\/h4>\n

    \u8ba9\u6211\u4eec\u770b\u770b\u6570\u636e\u5e93\u4e2d\u5230\u5e95\u53d1\u751f\u4e86\u4ec0\u4e48：<\/p>\n

    \u7b2c\u4e00\u6b65：\u6dfb\u52a0\u7c7b\u578b<\/p>\n

    \/\/ \u7528\u6237\u70b9\u51fb"\u6dfb\u52a0\u7c7b\u578b"，\u8f93\u5165"\u8fd8\u94b1"，\u9009\u62e9"\u6536\u5165"<\/span>
    \nPOST \/<\/span>billType\/<\/span>add
    \n{<\/span>
    \n "typeName"<\/span>:<\/span> "\u8fd8\u94b1"<\/span>,<\/span>
    \n "billFlag"<\/span>:<\/span> 1<\/span>,<\/span> \/\/ 1\u8868\u793a\u6536\u5165<\/span>
    \n "userId"<\/span>:<\/span> 1<\/span>
    \n}<\/span><\/p>\n

    \u6570\u636e\u5e93\u63d2\u5165\u6210\u529f，\u6b64\u65f6 bill_type \u8868\u4e2d\u7684\u6570\u636e：<\/p>\n

    bill_type_id | type_name | bill_flag | user_id | deleted | create_time
    \n————-|———–|———–|———|———|——————
    \n1 | \u8fd8\u94b1 | 1 | 1 | 0 | 2026-01-15 10:00:00<\/p>\n

    \u7b2c\u4e8c\u6b65：\u5220\u9664\u7c7b\u578b<\/p>\n

    \/\/ \u7528\u6237\u70b9\u51fb"\u5220\u9664"\u6309\u94ae<\/span>
    \nDELETE \/<\/span>billType\/<\/span>delete\/<\/span>1<\/span><\/p>\n

    \u7531\u4e8e\u4f7f\u7528\u4e86\u903b\u8f91\u5220\u9664，\u6570\u636e\u5e93\u6267\u884c\u7684\u662f UPDATE \u800c\u4e0d\u662f DELETE：<\/p>\n

    — MyBatis-Plus \u81ea\u52a8\u751f\u6210\u7684 SQL<\/span>
    \nUPDATE<\/span> bill_type SET<\/span> deleted =<\/span> 1<\/span> WHERE<\/span> bill_type_id =<\/span> 1<\/span><\/p>\n

    \u6b64\u65f6\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e：<\/p>\n

    bill_type_id | type_name | bill_flag | user_id | deleted | create_time
    \n————-|———–|———–|———|———|——————
    \n1 | \u8fd8\u94b1 | 1 | 1 | 1 | 2024-01-15 10:00:00
    \n \u2191 \u53d8\u6210\u4e861，\u8868\u793a\u5df2\u5220\u9664<\/p>\n

    \u7b2c\u4e09\u6b65：\u518d\u6b21\u6dfb\u52a0\u540c\u540d\u7c7b\u578b<\/p>\n

    \/\/ \u7528\u6237\u518d\u6b21\u70b9\u51fb"\u6dfb\u52a0\u7c7b\u578b"，\u8f93\u5165"\u8fd8\u94b1"，\u9009\u62e9"\u6536\u5165"<\/span>
    \nPOST \/<\/span>billType\/<\/span>add
    \n{<\/span>
    \n "typeName"<\/span>:<\/span> "\u8fd8\u94b1"<\/span>,<\/span>
    \n "billFlag"<\/span>:<\/span> 1<\/span>,<\/span>
    \n "userId"<\/span>:<\/span> 1<\/span>
    \n}<\/span><\/p>\n

    \u540e\u7aef\u5148\u68c0\u67e5\u662f\u5426\u5b58\u5728\u540c\u540d\u7c7b\u578b：<\/p>\n

    \/\/ Controller \u5c42\u7684\u68c0\u67e5\u903b\u8f91<\/span>
    \nBillType<\/span> existType =<\/span> billTypeService.<\/span>getTypeByNameAndFlag<\/span>(<\/span>"\u8fd8\u94b1"<\/span>,<\/span> 1<\/span>,<\/span> 1<\/span>)<\/span>;<\/span>
    \n\/\/ MyBatis-Plus \u81ea\u52a8\u751f\u6210\u7684 SQL：<\/span>
    \n\/\/ SELECT * FROM bill_type <\/span>
    \n\/\/ WHERE type_name='\u8fd8\u94b1' AND bill_flag=1 AND user_id=1 AND deleted=0<\/span>
    \n\/\/ \u2191 \u81ea\u52a8\u6dfb\u52a0<\/span>
    \n\/\/ \u67e5\u8be2\u7ed3\u679c：null（\u56e0\u4e3a deleted=1 \u7684\u6570\u636e\u88ab\u8fc7\u6ee4\u4e86）<\/span><\/p>\n

    \u68c0\u67e5\u901a\u8fc7，\u7ee7\u7eed\u63d2\u5165：<\/p>\n

    billTypeMapper.<\/span>insert<\/span>(<\/span>billType)<\/span>;<\/span>
    \n\/\/ \u6267\u884c SQL：<\/span>
    \n\/\/ INSERT INTO bill_type (type_name, bill_flag, user_id, deleted) <\/span>
    \n\/\/ VALUES ('\u8fd8\u94b1', 1, 1, 0)<\/span><\/p>\n

    💥 \u62a5\u9519\u4e86！<\/p>\n

    java.<\/span>sql.<\/span><\/span>SQLIntegrityConstraintViolationException<\/span>:<\/span>
    \nDuplicate<\/span> entry '1-\u8fd8\u94b1-1'<\/span> for<\/span> key 'idx_user_type_flag'<\/p>\n

    \u4e3a\u4ec0\u4e48\u4f1a\u62a5\u9519？<\/p>\n

    \u56e0\u4e3a\u6570\u636e\u5e93\u4e2d\u5df2\u7ecf\u5b58\u5728\u4e00\u6761\u8bb0\u5f55：<\/p>\n

    user_id=<\/span>1<\/span>,<\/span> type_name=<\/span>'\u8fd8\u94b1'<\/span>,<\/span> bill_flag=<\/span>1<\/span><\/p>\n

    \u867d\u7136\u8fd9\u6761\u8bb0\u5f55\u7684 deleted=1（\u5df2\u5220\u9664），\u4f46\u552f\u4e00\u7d22\u5f15 idx_user_type_flag \u5bf9\u6240\u6709\u6570\u636e\u751f\u6548，\u4e0d\u7ba1 deleted \u662f 0 \u8fd8\u662f 1\u3002<\/p>\n

    1.3 \u9884\u671f vs \u5b9e\u9645<\/h4>\n
      \n
    • \u9884\u671f\u884c\u4e3a：\u5220\u9664\u540e\u5e94\u8be5\u53ef\u4ee5\u91cd\u65b0\u6dfb\u52a0\u540c\u540d\u7c7b\u578b（\u56e0\u4e3a\u524d\u7aef\u67e5\u8be2\u4e0d\u5230\u8fd9\u4e2a\u7c7b\u578b\u4e86）<\/li>\n
    • \u5b9e\u9645\u884c\u4e3a：\u63d0\u793a"\u6570\u636e\u91cd\u590d，\u8bf7\u68c0\u67e5\u8f93\u5165"（\u56e0\u4e3a\u6570\u636e\u5e93\u4e2d\u8fd8\u5b58\u5728\u8fd9\u6761\u8bb0\u5f55）<\/li>\n
    • \u7528\u6237\u56f0\u60d1：\u201c\u6211\u660e\u660e\u5220\u9664\u4e86，\u4e3a\u4ec0\u4e48\u8fd8\u8bf4\u91cd\u590d？\u201d<\/li>\n<\/ul>\n
      \n

      \u4e8c\u3001\u95ee\u9898\u5206\u6790<\/h3>\n

      2.1 \u6570\u636e\u5e93\u8868\u7ed3\u6784<\/h4>\n

      CREATE<\/span> TABLE<\/span> `<\/span>bill_type`<\/span><\/span> (<\/span>
      \n `<\/span>bill_type_id`<\/span><\/span> BIGINT<\/span> PRIMARY<\/span> KEY<\/span> AUTO_INCREMENT<\/span>,<\/span>
      \n `<\/span>type_name`<\/span><\/span> VARCHAR<\/span>(<\/span>50<\/span>)<\/span> NOT<\/span> NULL<\/span> COMMENT<\/span> '\u7c7b\u578b\u540d\u79f0'<\/span>,<\/span>
      \n `<\/span>bill_flag`<\/span><\/span> TINYINT<\/span> NOT<\/span> NULL<\/span> COMMENT<\/span> '0=\u652f\u51fa，1=\u6536\u5165'<\/span>,<\/span>
      \n `<\/span>user_id`<\/span><\/span> BIGINT<\/span> NOT<\/span> NULL<\/span> COMMENT<\/span> '\u7528\u6237ID'<\/span>,<\/span>
      \n `<\/span>deleted`<\/span><\/span> TINYINT<\/span> DEFAULT<\/span> 0<\/span> COMMENT<\/span> '\u903b\u8f91\u5220\u9664：0=\u672a\u5220\u9664，1=\u5df2\u5220\u9664'<\/span>,<\/span>
      \n `<\/span>version`<\/span><\/span> INT<\/span> DEFAULT<\/span> 0<\/span> COMMENT<\/span> '\u4e50\u89c2\u9501\u7248\u672c\u53f7'<\/span>,<\/span>
      \n `<\/span>create_time`<\/span><\/span> DATETIME<\/span> DEFAULT<\/span> CURRENT_TIMESTAMP<\/span>,<\/span>
      \n `<\/span>update_time`<\/span><\/span> DATETIME<\/span> DEFAULT<\/span> CURRENT_TIMESTAMP<\/span> ON<\/span> UPDATE<\/span> CURRENT_TIMESTAMP<\/span>,<\/span>
      \n UNIQUE<\/span> KEY<\/span> `<\/span>idx_user_type_flag`<\/span><\/span> (<\/span>`<\/span>user_id`<\/span><\/span>,<\/span> `<\/span>type_name`<\/span><\/span>,<\/span> `<\/span>bill_flag`<\/span><\/span>)<\/span>#\u5173\u952e<\/span>
      \n)<\/span> ENGINE<\/span>=<\/span>InnoDB<\/span> DEFAULT<\/span> CHARSET<\/span>=<\/span>utf8mb4;<\/span><\/p>\n

      \u5173\u952e\u70b9：\u8868\u4e2d\u6709\u552f\u4e00\u7d22\u5f15 idx_user_type_flag，\u786e\u4fdd\u540c\u4e00\u7528\u6237\u4e0d\u80fd\u6dfb\u52a0\u91cd\u590d\u7684\u7c7b\u578b\u3002<\/p>\n

      2.2 \u5b9e\u4f53\u7c7b\u914d\u7f6e<\/h4>\n

      @Data<\/span>
      \n@TableName<\/span>(<\/span>"bill_type"<\/span>)<\/span>
      \npublic<\/span> class<\/span> BillType<\/span> {<\/span>
      \n @TableId<\/span>(<\/span>type =<\/span> IdType<\/span>.<\/span>AUTO)<\/span>
      \n private<\/span> Long<\/span> billTypeId;<\/span><\/p>\n

      private<\/span> String<\/span> typeName;<\/span>
      \n private<\/span> Integer<\/span> billFlag;<\/span>
      \n private<\/span> Long<\/span> userId;<\/span><\/p>\n

      \/\/ \u903b\u8f91\u5220\u9664\u5b57\u6bb5<\/span>
      \n @TableLogic<\/span>
      \n private<\/span> Integer<\/span> deleted;<\/span><\/p>\n

      @Version<\/span>
      \n private<\/span> Integer<\/span> version;<\/span><\/p>\n

      @TableField<\/span>(<\/span>fill =<\/span> FieldFill<\/span>.<\/span>INSERT)<\/span>
      \n private<\/span> LocalDateTime<\/span> createTime;<\/span><\/p>\n

      @TableField<\/span>(<\/span>fill =<\/span> FieldFill<\/span>.<\/span>INSERT_UPDATE)<\/span>
      \n private<\/span> LocalDateTime<\/span> updateTime;<\/span>
      \n}<\/span><\/p>\n

      2.3 \u95ee\u9898\u6839\u6e90<\/h4>\n

      \u6838\u5fc3\u77db\u76fe：<\/p>\n

        \n
      • MyBatis-Plus \u7684\u903b\u8f91\u5220\u9664：\u67e5\u8be2\u65f6\u81ea\u52a8\u6dfb\u52a0 WHERE deleted = 0，\u5df2\u5220\u9664\u7684\u6570\u636e\u5bf9\u5e94\u7528\u5c42"\u4e0d\u53ef\u89c1"<\/li>\n
      • \u6570\u636e\u5e93\u7684\u552f\u4e00\u7d22\u5f15：\u5bf9\u6240\u6709\u6570\u636e\u751f\u6548（\u5305\u62ec deleted = 1 \u7684\u6570\u636e）<\/li>\n<\/ul>\n

        \u6267\u884c\u6d41\u7a0b：<\/p>\n

        \/\/ Controller \u5c42\u68c0\u67e5<\/span>
        \nBillType<\/span> existType =<\/span> billTypeService.<\/span>getTypeByNameAndFlag<\/span>(<\/span>"\u8fd8\u94b1"<\/span>,<\/span> 1<\/span>,<\/span> userId)<\/span>;<\/span>
        \n\/\/ MyBatis-Plus \u81ea\u52a8\u6dfb\u52a0 WHERE deleted = 0<\/span>
        \n\/\/ SQL: SELECT * FROM bill_type WHERE type_name='\u8fd8\u94b1' AND bill_flag=1 AND user_id=1 AND deleted=0<\/span>
        \n\/\/ \u7ed3\u679c：null（\u56e0\u4e3a\u5df2\u5220\u9664\u7684\u6570\u636e\u88ab\u8fc7\u6ee4\u4e86）<\/span><\/p>\n

        if<\/span> (<\/span>existType !=<\/span> null<\/span>)<\/span> {<\/span>
        \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u7c7b\u578b\u5df2\u5b58\u5728"<\/span>)<\/span>;<\/span> \/\/ \u8fd9\u91cc\u4e0d\u4f1a\u6267\u884c<\/span>
        \n}<\/span><\/p>\n

        \/\/ \u7ee7\u7eed\u63d2\u5165<\/span>
        \nbillTypeService.<\/span>addType<\/span>(<\/span>billType)<\/span>;<\/span>
        \n\/\/ SQL: INSERT INTO bill_type (type_name, bill_flag, user_id, deleted) VALUES ('\u8fd8\u94b1', 1, 1, 0)<\/span>
        \n\/\/ \u552f\u4e00\u7d22\u5f15\u51b2\u7a81！\u6570\u636e\u5e93\u4e2d\u5df2\u5b58\u5728 (user_id=1, type_name='\u8fd8\u94b1', bill_flag=1) \u7684\u8bb0\u5f55<\/span><\/p>\n

        \u7ed3\u8bba：\u5e94\u7528\u5c42\u8ba4\u4e3a\u6570\u636e\u4e0d\u5b58\u5728，\u4f46\u6570\u636e\u5e93\u5c42\u8ba4\u4e3a\u6570\u636e\u5b58\u5728，\u5bfc\u81f4\u552f\u4e00\u7d22\u5f15\u51b2\u7a81\u3002<\/p>\n

        \n

        \u4e09\u3001\u89e3\u51b3\u65b9\u6848<\/h3>\n

        3.1 \u65b9\u6848\u4e00：\u6062\u590d\u5df2\u5220\u9664\u7684\u6570\u636e（\u63a8\u8350）<\/h4>\n

        \u601d\u8def：\u6dfb\u52a0\u7c7b\u578b\u65f6，\u5148\u68c0\u67e5\u662f\u5426\u5b58\u5728\u5df2\u5220\u9664\u7684\u540c\u540d\u7c7b\u578b，\u5982\u679c\u5b58\u5728\u5219\u6062\u590d\u5b83\u3002<\/p>\n

        \u6b65\u9aa41：\u5728 Mapper \u4e2d\u6dfb\u52a0\u81ea\u5b9a\u4e49 SQL<\/h5>\n

        @Mapper<\/span>
        \npublic<\/span> interface<\/span> BillTypeMapper<\/span> extends<\/span> BaseMapper<\/span><<\/span>BillType<\/span>><\/span><\/span> {<\/span><\/p>\n

        \/\/ \u67e5\u8be2\u5df2\u5220\u9664\u7684\u7c7b\u578b（\u7ed5\u8fc7\u903b\u8f91\u5220\u9664）<\/span>
        \n @Select<\/span>(<\/span>"SELECT * FROM bill_type WHERE type_name = #{typeName} "<\/span> +<\/span>
        \n "AND bill_flag = #{billFlag} AND user_id = #{userId} AND deleted = 1"<\/span>)<\/span>
        \n BillType<\/span> selectDeletedByNameAndFlag<\/span>(<\/span>@Param<\/span>(<\/span>"typeName"<\/span>)<\/span> String<\/span> typeName,<\/span>
        \n @Param<\/span>(<\/span>"billFlag"<\/span>)<\/span> Integer<\/span> billFlag,<\/span>
        \n @Param<\/span>(<\/span>"userId"<\/span>)<\/span> Long<\/span> userId)<\/span>;<\/span><\/p>\n

        \/\/ \u6062\u590d\u5df2\u5220\u9664\u7684\u7c7b\u578b（\u7ed5\u8fc7\u903b\u8f91\u5220\u9664）<\/span>
        \n @Update<\/span>(<\/span>"UPDATE bill_type SET deleted = 0 WHERE bill_type_id = #{billTypeId}"<\/span>)<\/span>
        \n int<\/span> restoreDeleted<\/span>(<\/span>@Param<\/span>(<\/span>"billTypeId"<\/span>)<\/span> Long<\/span> billTypeId)<\/span>;<\/span>
        \n}<\/span><\/p>\n

        \u4e3a\u4ec0\u4e48\u8981\u81ea\u5df1\u5199 SQL？<\/p>\n

        \u56e0\u4e3a MyBatis-Plus \u7684 @TableLogic \u4f1a\u62e6\u622a\u6240\u6709\u67e5\u8be2，\u5373\u4f7f\u4f60\u624b\u52a8\u6307\u5b9a eq(BillType::getDeleted, 1) \u4e5f\u4f1a\u88ab\u8986\u76d6\u4e3a deleted = 0\u3002\u53ea\u6709\u901a\u8fc7 @Select \u6ce8\u89e3\u81ea\u5df1\u5199 SQL，\u624d\u80fd\u7ed5\u8fc7\u903b\u8f91\u5220\u9664\u673a\u5236\u3002<\/p>\n

        \u6b65\u9aa42：\u4fee\u6539 Service \u5c42\u903b\u8f91<\/h5>\n

        @Override<\/span>
        \npublic<\/span> Result<\/span><<\/span>Void<\/span>><\/span><\/span> addType<\/span>(<\/span>BillType<\/span> billType)<\/span> {<\/span>
        \n String<\/span> typeDesc =<\/span> billType.<\/span>getBillFlag<\/span>(<\/span>)<\/span> ==<\/span> 0<\/span> ?<\/span> "\u652f\u51fa"<\/span> :<\/span> "\u6536\u5165"<\/span>;<\/span><\/p>\n

        \/\/ \u5148\u68c0\u67e5\u662f\u5426\u5b58\u5728\u5df2\u5220\u9664\u7684\u540c\u540d\u7c7b\u578b<\/span>
        \n BillType<\/span> deletedType =<\/span> billTypeMapper.<\/span>selectDeletedByNameAndFlag<\/span>(<\/span>
        \n billType.<\/span>getTypeName<\/span>(<\/span>)<\/span>,<\/span>
        \n billType.<\/span>getBillFlag<\/span>(<\/span>)<\/span>,<\/span>
        \n billType.<\/span>getUserId<\/span>(<\/span>)<\/span>
        \n )<\/span>;<\/span><\/p>\n

        if<\/span> (<\/span>deletedType !=<\/span> null<\/span>)<\/span> {<\/span>
        \n \/\/ \u6062\u590d\u5df2\u5220\u9664\u7684\u7c7b\u578b<\/span>
        \n int<\/span> rows =<\/span> billTypeMapper.<\/span>restoreDeleted<\/span>(<\/span>deletedType.<\/span>getBillTypeId<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
        \n if<\/span> (<\/span>rows ><\/span> 0<\/span>)<\/span> {<\/span>
        \n log.<\/span>info<\/span>(<\/span>"\u6062\u590d\u5df2\u5220\u9664\u7684\u6536\u652f\u7c7b\u578b，typeId：{}"<\/span>,<\/span> deletedType.<\/span>getBillTypeId<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
        \n return<\/span> Result<\/span>.<\/span>success<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> billType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u5df2\u6062\u590d"<\/span>)<\/span>;<\/span>
        \n }<\/span>
        \n }<\/span><\/p>\n

        \/\/ \u6ca1\u6709\u5df2\u5220\u9664\u7684\u540c\u540d\u7c7b\u578b，\u6b63\u5e38\u6dfb\u52a0<\/span>
        \n int<\/span> rows =<\/span> billTypeMapper.<\/span>insert<\/span>(<\/span>billType)<\/span>;<\/span>
        \n if<\/span> (<\/span>rows ><\/span> 0<\/span>)<\/span> {<\/span>
        \n return<\/span> Result<\/span>.<\/span>success<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> billType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u6dfb\u52a0\u6210\u529f"<\/span>)<\/span>;<\/span>
        \n }<\/span> else<\/span> {<\/span>
        \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> billType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u6dfb\u52a0\u5931\u8d25"<\/span>)<\/span>;<\/span>
        \n }<\/span>
        \n}<\/span><\/p>\n

        \u6548\u679c\u5c55\u793a<\/p>\n

          \n
        • \u7b2c\u4e00\u6b21\u6dfb\u52a0：\u201c\u7c7b\u578b\u3010\u8fd8\u94b1(\u6536\u5165)\u3011\u6dfb\u52a0\u6210\u529f\u201d<\/li>\n
        • \u5220\u9664\u540e\u518d\u6dfb\u52a0：\u201c\u7c7b\u578b\u3010\u8fd8\u94b1(\u6536\u5165)\u3011\u5df2\u6062\u590d\u201d<\/li>\n<\/ul>\n

          \u4f18\u70b9：<\/p>\n

            \n
          • \u4e0d\u4e22\u5931\u5386\u53f2\u6570\u636e<\/li>\n
          • \u7528\u6237\u4f53\u9a8c\u597d（\u5220\u9664\u540e\u53ef\u4ee5\u91cd\u65b0\u6dfb\u52a0）<\/li>\n
          • \u4fdd\u7559\u4e86\u903b\u8f91\u5220\u9664\u7684\u4f18\u52bf<\/li>\n<\/ul>\n
            \n

            3.2 \u65b9\u6848\u4e8c：\u4fee\u6539\u552f\u4e00\u7d22\u5f15（\u590d\u6742）<\/h4>\n

            \u601d\u8def：\u8ba9\u552f\u4e00\u7d22\u5f15\u53ea\u5bf9\u672a\u5220\u9664\u7684\u6570\u636e\u751f\u6548\u3002<\/p>\n

            MySQL 8.0+ \u7684\u51fd\u6570\u7d22\u5f15<\/h5>\n

            — \u5220\u9664\u65e7\u7d22\u5f15<\/span>
            \nALTER<\/span> TABLE<\/span> bill_type DROP<\/span> INDEX<\/span> idx_user_type_flag;<\/span><\/p>\n

            — \u521b\u5efa\u51fd\u6570\u7d22\u5f15（\u53ea\u5bf9 deleted=0 \u7684\u6570\u636e\u751f\u6548）<\/span>
            \nCREATE<\/span> UNIQUE<\/span> INDEX<\/span> idx_user_type_flag
            \nON<\/span> bill_type(<\/span>user_id,<\/span> type_name,<\/span> bill_flag,<\/span> (<\/span>CASE<\/span> WHEN<\/span> deleted =<\/span> 0<\/span> THEN<\/span> 0<\/span> ELSE<\/span> bill_type_id END<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

            \u7f3a\u70b9：<\/p>\n

              \n
            • \u9700\u8981 MySQL 8.0+<\/li>\n
            • \u8bed\u6cd5\u590d\u6742，\u4e0d\u6613\u7ef4\u62a4<\/li>\n
            • \u5df2\u5220\u9664\u7684\u6570\u636e\u4ecd\u7136\u5360\u7528\u7d22\u5f15\u7a7a\u95f4<\/li>\n<\/ul>\n
              \n

              3.3 \u65b9\u6848\u4e09：\u6539\u4e3a\u7269\u7406\u5220\u9664（\u4e0d\u63a8\u8350）<\/h4>\n

              \u601d\u8def：\u76f4\u63a5\u4ece\u6570\u636e\u5e93\u5220\u9664\u6570\u636e，\u4e0d\u4f7f\u7528\u903b\u8f91\u5220\u9664\u3002<\/p>\n

              @Override<\/span>
              \npublic<\/span> Result<\/span><<\/span>Void<\/span>><\/span><\/span> deleteType<\/span>(<\/span>Long<\/span> billTypeId,<\/span> Long<\/span> userId)<\/span> {<\/span>
              \n \/\/ \u7269\u7406\u5220\u9664<\/span>
              \n int<\/span> rows =<\/span> billTypeMapper.<\/span>deleteById<\/span>(<\/span>billTypeId)<\/span>;<\/span>
              \n return<\/span> rows ><\/span> 0<\/span> ?<\/span> Result<\/span>.<\/span>success<\/span>(<\/span>"\u5220\u9664\u6210\u529f"<\/span>)<\/span> :<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u5220\u9664\u5931\u8d25"<\/span>)<\/span>;<\/span>
              \n}<\/span><\/p>\n

              \u7f3a\u70b9：<\/p>\n

                \n
              • \u4e22\u5931\u5386\u53f2\u6570\u636e<\/li>\n
              • \u65e0\u6cd5\u6062\u590d\u8bef\u5220\u7684\u6570\u636e<\/li>\n
              • \u5931\u53bb\u4e86\u903b\u8f91\u5220\u9664\u7684\u4f18\u52bf<\/li>\n<\/ul>\n
                \n

                \u56db\u3001\u4f18\u5316\u5168\u5c40\u5f02\u5e38\u5904\u7406<\/h3>\n

                \u4e3a\u4e86\u8ba9\u7528\u6237\u770b\u5230\u66f4\u53cb\u597d\u7684\u63d0\u793a，\u53ef\u4ee5\u4f18\u5316\u5168\u5c40\u5f02\u5e38\u5904\u7406\u5668：<\/p>\n

                @RestControllerAdvice<\/span>
                \npublic<\/span> class<\/span> GlobalExceptionHandler<\/span> {<\/span><\/p>\n

                @ExceptionHandler<\/span>(<\/span>DataIntegrityViolationException<\/span>.<\/span>class<\/span>)<\/span>
                \n public<\/span> Result<\/span><<\/span>Void<\/span>><\/span><\/span> handleDataIntegrityViolationException<\/span>(<\/span>DataIntegrityViolationException<\/span> e)<\/span> {<\/span>
                \n if<\/span> (<\/span>e.<\/span>getCause<\/span>(<\/span>)<\/span> instanceof<\/span> SQLIntegrityConstraintViolationException<\/span>)<\/span> {<\/span>
                \n String<\/span> message =<\/span> (<\/span>(<\/span>SQLIntegrityConstraintViolationException<\/span>)<\/span> e.<\/span>getCause<\/span>(<\/span>)<\/span>)<\/span>.<\/span>getMessage<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

                if<\/span> (<\/span>message.<\/span>contains<\/span>(<\/span>"Duplicate entry"<\/span>)<\/span>)<\/span> {<\/span>
                \n if<\/span> (<\/span>message.<\/span>contains<\/span>(<\/span>"username"<\/span>)<\/span>)<\/span> {<\/span>
                \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u7528\u6237\u540d\u5df2\u5b58\u5728，\u8bf7\u66f4\u6362"<\/span>)<\/span>;<\/span>
                \n }<\/span> else<\/span> if<\/span> (<\/span>message.<\/span>contains<\/span>(<\/span>"bill_type"<\/span>)<\/span> ||<\/span> message.<\/span>contains<\/span>(<\/span>"type_name"<\/span>)<\/span>)<\/span> {<\/span>
                \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u8be5\u7c7b\u578b\u5df2\u5b58\u5728（\u53ef\u80fd\u4e4b\u524d\u88ab\u5220\u9664），\u8bf7\u4f7f\u7528\u5176\u4ed6\u540d\u79f0"<\/span>)<\/span>;<\/span>
                \n }<\/span>
                \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u6570\u636e\u91cd\u590d，\u8bf7\u68c0\u67e5\u8f93\u5165"<\/span>)<\/span>;<\/span>
                \n }<\/span>
                \n }<\/span>
                \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u6570\u636e\u64cd\u4f5c\u5931\u8d25，\u8bf7\u68c0\u67e5\u6570\u636e\u5b8c\u6574\u6027"<\/span>)<\/span>;<\/span>
                \n }<\/span>
                \n}<\/span><\/p>\n

                \n

                \u4e94\u3001\u603b\u7ed3<\/h3>\n

                5.1 \u6838\u5fc3\u8981\u70b9<\/h4>\n
              • MyBatis-Plus \u903b\u8f91\u5220\u9664\u7684\u672c\u8d28：\u5728\u67e5\u8be2\u65f6\u81ea\u52a8\u6dfb\u52a0 WHERE deleted = 0，\u5bf9\u5e94\u7528\u5c42\u9690\u85cf\u5df2\u5220\u9664\u7684\u6570\u636e<\/li>\n
              • \u552f\u4e00\u7d22\u5f15\u7684\u4f5c\u7528\u8303\u56f4：\u5bf9\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u6570\u636e\u751f\u6548，\u4e0d\u533a\u5206 deleted \u5b57\u6bb5<\/li>\n
              • \u51b2\u7a81\u7684\u6839\u6e90：\u5e94\u7528\u5c42\u8ba4\u4e3a\u6570\u636e\u4e0d\u5b58\u5728，\u6570\u636e\u5e93\u5c42\u8ba4\u4e3a\u6570\u636e\u5b58\u5728<\/li>\n

                5.2 \u6700\u4f73\u5b9e\u8df5<\/h4>\n
                  \n
                • \u63a8\u8350\u65b9\u6848\u4e00：\u6062\u590d\u5df2\u5220\u9664\u7684\u6570\u636e，\u517c\u987e\u7528\u6237\u4f53\u9a8c\u548c\u6570\u636e\u5b8c\u6574\u6027<\/li>\n
                • \u4f7f\u7528 @Select \u81ea\u5b9a\u4e49 SQL \u7ed5\u8fc7\u903b\u8f91\u5220\u9664<\/li>\n
                • \u4f18\u5316\u5168\u5c40\u5f02\u5e38\u5904\u7406，\u63d0\u4f9b\u53cb\u597d\u7684\u9519\u8bef\u63d0\u793a<\/li>\n
                • \u907f\u514d\u5728\u552f\u4e00\u7d22\u5f15\u5b57\u6bb5\u4e0a\u4f7f\u7528\u903b\u8f91\u5220\u9664（\u9664\u975e\u6709\u7279\u6b8a\u5904\u7406）<\/li>\n<\/ul>\n

                  5.3 \u6269\u5c55\u601d\u8003<\/h4>\n

                  \u4ec0\u4e48\u65f6\u5019\u9002\u5408\u7528\u903b\u8f91\u5220\u9664？<\/p>\n

                    \n
                  • \u9700\u8981\u4fdd\u7559\u5386\u53f2\u6570\u636e（\u5982\u8ba2\u5355\u3001\u65e5\u5fd7）<\/li>\n
                  • \u9700\u8981\u652f\u6301\u6570\u636e\u6062\u590d（\u5982\u56de\u6536\u7ad9\u529f\u80fd）<\/li>\n
                  • \u6570\u636e\u4e4b\u95f4\u6709\u590d\u6742\u7684\u5173\u8054\u5173\u7cfb<\/li>\n<\/ul>\n

                    \u4ec0\u4e48\u65f6\u5019\u4e0d\u9002\u5408\u7528\u903b\u8f91\u5220\u9664？<\/p>\n

                      \n
                    • \u6570\u636e\u91cf\u5927\u4e14\u67e5\u8be2\u9891\u7e41（\u5f71\u54cd\u6027\u80fd）<\/li>\n
                    • \u6709\u552f\u4e00\u6027\u7ea6\u675f\u4e14\u9700\u8981\u91cd\u590d\u6dfb\u52a0<\/li>\n
                    • \u6570\u636e\u6ca1\u6709\u6062\u590d\u9700\u6c42<\/li>\n<\/ul>\n
                      \n

                      \u516d\u3001\u5b8c\u6574\u4ee3\u7801<\/h3>\n

                      \u4ee5\u4e0b\u53ea\u5c55\u793a\u4e0e\u6536\u652f\u7c7b\u578b\u76f8\u5173\u7684\u589e\u52a0\u548c\u5220\u9664\u65b9\u6cd5：<\/p>\n

                      Controller\u5c42<\/h4>\n

                      \/\/ \u8d26\u5355\u7c7b\u578b\u63a7\u5236\u5668<\/span>
                      \n@RequiredArgsConstructor<\/span>
                      \n@RestController<\/span>
                      \n@RequestMapping<\/span>(<\/span>"\/billType"<\/span>)<\/span>
                      \npublic<\/span> class<\/span> BillTypeController<\/span> {<\/span><\/p>\n

                      \/\/\u5229\u7528Lombok\u6ce8\u5165<\/span>
                      \n private<\/span> final<\/span> BillTypeService<\/span> billTypeService;<\/span> <\/p>\n

                      \/\/ \u6dfb\u52a0\u7c7b\u578b<\/span>
                      \n @PostMapping<\/span>(<\/span>"\/add"<\/span>)<\/span>
                      \n public<\/span> Result<\/span><<\/span>Void<\/span>><\/span><\/span> addType<\/span>(<\/span>HttpServletRequest<\/span> request,<\/span> @RequestBody<\/span> @Valid<\/span> BillType<\/span> billType)<\/span> {<\/span>
                      \n Long<\/span> userId =<\/span> TokenHelper<\/span>.<\/span>getUserId<\/span>(<\/span>request)<\/span>;<\/span>\/\/TokenHelper\u4e3a\u8f85\u52a9\u7c7b，\u7528\u4e8e\u4ece\u8bf7\u6c42\u4e2d\u83b7\u53d6userId,username\u7b49<\/span>
                      \n billType.<\/span>setUserId<\/span>(<\/span>userId)<\/span>;<\/span><\/p>\n

                      \/\/\u8fd4\u56de\u524d\u7aef\u4fe1\u606f\u4f7f\u7528<\/span>
                      \n String<\/span> typeDesc =<\/span> billType.<\/span>getBillFlag<\/span>(<\/span>)<\/span> ==<\/span> 0<\/span> ?<\/span> "\u652f\u51fa"<\/span> :<\/span> "\u6536\u5165"<\/span>;<\/span><\/p>\n

                      \/\/ \u68c0\u67e5\u6dfb\u52a0\u7684\u7c7b\u578b\u662f\u5426\u5b58\u5728<\/span>
                      \n BillType<\/span> typeByNameAndFlag =<\/span> billTypeService.<\/span>getTypeByNameAndFlag<\/span>(<\/span>
                      \n billType.<\/span>getTypeName<\/span>(<\/span>)<\/span>,<\/span> billType.<\/span>getBillFlag<\/span>(<\/span>)<\/span>,<\/span> userId)<\/span>;<\/span><\/p>\n

                      if<\/span> (<\/span>typeByNameAndFlag !=<\/span> null<\/span>)<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> billType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u5df2\u5b58\u5728"<\/span>)<\/span>;<\/span>
                      \n }<\/span><\/p>\n

                      \/\/\u8fdb\u884c\u6dfb\u52a0<\/span>
                      \n return<\/span> billTypeService.<\/span>addType<\/span>(<\/span>billType)<\/span>;<\/span>
                      \n }<\/span><\/p>\n

                      \/\/ \u5220\u9664\u7c7b\u578b<\/span>
                      \n @DeleteMapping<\/span>(<\/span>"\/delete\/{billTypeId}"<\/span>)<\/span>
                      \n public<\/span> Result<\/span><<\/span>Void<\/span>><\/span><\/span> deleteType<\/span>(<\/span>HttpServletRequest<\/span> request,<\/span> @PathVariable<\/span> Long<\/span> billTypeId)<\/span> {<\/span>
                      \n Long<\/span> userId =<\/span> TokenHelper<\/span>.<\/span>getUserId<\/span>(<\/span>request)<\/span>;<\/span><\/p>\n

                      \/\/ \u9a8c\u8bc1\u662f\u5426\u662f\u5f53\u524d\u7528\u6237\u7684\u7c7b\u578b<\/span>
                      \n BillType<\/span> existType =<\/span> billTypeService.<\/span>getTypeById<\/span>(<\/span>billTypeId,<\/span> userId)<\/span>;<\/span>
                      \n if<\/span> (<\/span>existType ==<\/span> null<\/span>)<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>notFound<\/span>(<\/span>"\u7c7b\u578b\u4e0d\u5b58\u5728\u6216\u65e0\u6743\u9650"<\/span>)<\/span>;<\/span>
                      \n }<\/span><\/p>\n

                      \/\/\u8fdb\u884c\u5220\u9664<\/span>
                      \n return<\/span> billTypeService.<\/span>deleteType<\/span>(<\/span>billTypeId,<\/span> userId)<\/span>;<\/span>
                      \n }<\/span>
                      \n}<\/span><\/p>\n

                      \/\/\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e2a\u7cfb\u7edf\u5e38\u91cf\u7c7b，\u7edf\u4e00\u7ba1\u7406\u6240\u6709\u9b54\u6cd5\u503c，\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027<\/span>
                      \n\/\/\u4e0a\u9762\u76840（\u652f\u51fa）\u5c31\u53ef\u4ee5\u5199\u8fdb\u91cc\u9762\u3002\u6bd4\u5982：Constants.BILL_FLAG_EXPENSE<\/span>
                      \npublic<\/span> class<\/span> Constants<\/span> {<\/span>
                      \n \/\/ ==================== \u8d26\u5355\u76f8\u5173 ==================== <\/span>
                      \n \/\/ \u8d26\u5355\u7c7b\u578b\u6807\u5fd7：\u652f\u51fa<\/span>
                      \n public<\/span> static<\/span> final<\/span> int<\/span> BILL_FLAG_EXPENSE =<\/span> 0<\/span>;<\/span>
                      \n \/\/ \u8d26\u5355\u7c7b\u578b\u6807\u5fd7：\u6536\u5165<\/span>
                      \n public<\/span> static<\/span> final<\/span> int<\/span> BILL_FLAG_INCOME =<\/span> 1<\/span>;<\/span>
                      \n}<\/span><\/p>\n

                      Service \u5c42<\/h4>\n

                      @Service<\/span>
                      \npublic<\/span> class<\/span> BillTypeServiceImpl<\/span> implements<\/span> BillTypeService<\/span> {<\/span><\/p>\n

                      @Autowired<\/span>
                      \n private<\/span> BillTypeMapper<\/span> billTypeMapper;<\/span><\/p>\n

                      \/\/\u589e\u52a0\u6536\u652f\u7c7b\u578b<\/span>
                      \n @Override<\/span>
                      \n public<\/span> Result<\/span><<\/span>Void<\/span>><\/span><\/span> addType<\/span>(<\/span>BillType<\/span> billType)<\/span> {<\/span>
                      \n String<\/span> typeDesc =<\/span> billType.<\/span>getBillFlag<\/span>(<\/span>)<\/span> ==<\/span> 0<\/span> ?<\/span> "\u652f\u51fa"<\/span> :<\/span> "\u6536\u5165"<\/span>;<\/span><\/p>\n

                      \/\/ \u68c0\u67e5\u662f\u5426\u5b58\u5728\u5df2\u5220\u9664\u7684\u540c\u540d\u7c7b\u578b<\/span>
                      \n BillType<\/span> deletedType =<\/span> billTypeMapper.<\/span>selectDeletedByNameAndFlag<\/span>(<\/span>
                      \n billType.<\/span>getTypeName<\/span>(<\/span>)<\/span>,<\/span>
                      \n billType.<\/span>getBillFlag<\/span>(<\/span>)<\/span>,<\/span>
                      \n billType.<\/span>getUserId<\/span>(<\/span>)<\/span>
                      \n )<\/span>;<\/span><\/p>\n

                      if<\/span> (<\/span>deletedType !=<\/span> null<\/span>)<\/span> {<\/span>
                      \n \/\/ \u6062\u590d\u5df2\u5220\u9664\u7684\u7c7b\u578b<\/span>
                      \n int<\/span> rows =<\/span> billTypeMapper.<\/span>restoreDeleted<\/span>(<\/span>deletedType.<\/span>getBillTypeId<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
                      \n if<\/span> (<\/span>rows ><\/span> 0<\/span>)<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>success<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> billType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u5df2\u6062\u590d"<\/span>)<\/span>;<\/span>
                      \n }<\/span>
                      \n }<\/span><\/p>\n

                      \/\/ \u6b63\u5e38\u6dfb\u52a0<\/span>
                      \n int<\/span> rows =<\/span> billTypeMapper.<\/span>insert<\/span>(<\/span>billType)<\/span>;<\/span>
                      \n if<\/span> (<\/span>rows ><\/span> 0<\/span>)<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>success<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> billType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u6dfb\u52a0\u6210\u529f"<\/span>)<\/span>;<\/span>
                      \n }<\/span> else<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> billType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u6dfb\u52a0\u5931\u8d25"<\/span>)<\/span>;<\/span>
                      \n }<\/span>
                      \n }<\/span>
                      \n}<\/span><\/p>\n

                      \/\/\u5220\u9664\u6536\u652f\u7c7b\u578b<\/span>
                      \n @Override<\/span>
                      \n public<\/span> Result<\/span><<\/span>Void<\/span>><\/span><\/span> deleteType<\/span>(<\/span>Long<\/span> billTypeId,<\/span> Long<\/span> userId)<\/span> {<\/span><\/p>\n

                      \/\/ \u5148\u67e5\u8be2\u7c7b\u578b\u4fe1\u606f，\u7528\u4e8e\u8fd4\u56de\u6d88\u606f<\/span>
                      \n BillType<\/span> existType =<\/span> getTypeById<\/span>(<\/span>billTypeId,<\/span> userId)<\/span>;<\/span>
                      \n if<\/span> (<\/span>existType ==<\/span> null<\/span>)<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u7c7b\u578b\u4e0d\u5b58\u5728\u6216\u65e0\u6743\u9650"<\/span>)<\/span>;<\/span>
                      \n }<\/span><\/p>\n

                      String<\/span> typeDesc =<\/span> existType.<\/span>getBillFlag<\/span>(<\/span>)<\/span> ==<\/span> 0<\/span> ?<\/span> "\u652f\u51fa"<\/span> :<\/span> "\u6536\u5165"<\/span>;<\/span><\/p>\n

                      LambdaQueryWrapper<\/span><<\/span>BillType<\/span>><\/span><\/span> wrapper =<\/span> new<\/span> LambdaQueryWrapper<\/span><<\/span>><\/span><\/span>(<\/span>)<\/span>;<\/span>
                      \n wrapper.<\/span>eq<\/span>(<\/span>BillType<\/span>::<\/span>getBillTypeId<\/span>,<\/span> billTypeId)<\/span>
                      \n .<\/span>eq<\/span>(<\/span>BillType<\/span>::<\/span>getUserId<\/span>,<\/span> userId)<\/span>;<\/span>
                      \n int<\/span> rows =<\/span> billTypeMapper.<\/span>delete<\/span>(<\/span>wrapper)<\/span>;<\/span><\/p>\n

                      if<\/span> (<\/span>rows ><\/span> 0<\/span>)<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>success<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> existType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u5220\u9664\u6210\u529f"<\/span>)<\/span>;<\/span>
                      \n }<\/span> else<\/span> {<\/span>
                      \n return<\/span> Result<\/span>.<\/span>fail<\/span>(<\/span>"\u7c7b\u578b\u3010"<\/span> +<\/span> existType.<\/span>getTypeName<\/span>(<\/span>)<\/span> +<\/span> "("<\/span> +<\/span> typeDesc +<\/span> ")\u3011\u5220\u9664\u5931\u8d25"<\/span>)<\/span>;<\/span>
                      \n }<\/span>
                      \n }<\/span><\/p>\n

                      Mapper \u5c42<\/h4>\n

                      @Mapper<\/span>
                      \npublic<\/span> interface<\/span> BillTypeMapper<\/span> extends<\/span> BaseMapper<\/span><<\/span>BillType<\/span>><\/span><\/span> {<\/span><\/p>\n

                      @Select<\/span>(<\/span>"SELECT * FROM bill_type WHERE type_name = #{typeName} "<\/span> +<\/span>
                      \n "AND bill_flag = #{billFlag} AND user_id = #{userId} AND deleted = 1"<\/span>)<\/span>
                      \n BillType<\/span> selectDeletedByNameAndFlag<\/span>(<\/span>@Param<\/span>(<\/span>"typeName"<\/span>)<\/span> String<\/span> typeName,<\/span>
                      \n @Param<\/span>(<\/span>"billFlag"<\/span>)<\/span> Integer<\/span> billFlag,<\/span>
                      \n @Param<\/span>(<\/span>"userId"<\/span>)<\/span> Long<\/span> userId)<\/span>;<\/span><\/p>\n

                      @Update<\/span>(<\/span>"UPDATE bill_type SET deleted = 0 WHERE bill_type_id = #{billTypeId}"<\/span>)<\/span>
                      \n int<\/span> restoreDeleted<\/span>(<\/span>@Param<\/span>(<\/span>"billTypeId"<\/span>)<\/span> Long<\/span> billTypeId)<\/span>;<\/span>
                      \n}<\/span><\/p>\n

                      \u7ed3\u8bed<\/h3>\n

                      \u8fd9\u4e2a\u95ee\u9898\u770b\u4f3c\u7b80\u5355，\u5b9e\u5219\u6d89\u53ca\u5230 MyBatis-Plus \u903b\u8f91\u5220\u9664\u673a\u5236\u3001\u6570\u636e\u5e93\u552f\u4e00\u7d22\u5f15\u3001\u5168\u5c40\u5f02\u5e38\u5904\u7406\u7b49\u591a\u4e2a\u77e5\u8bc6\u70b9\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5e2e\u52a9\u4f60\u907f\u5f00\u8fd9\u4e2a\u5751，\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u5206\u4eab\u4f60\u7684\u7ecf\u9a8c！<\/p>\n

                      \u5982\u679c\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u4f60\u6709\u5e2e\u52a9，\u8bf7\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u5173\u6ce8！\u6709\u95ee\u9898\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u8ba8\u8bba\u3002<\/p>\n

                      \u4f5c\u8005：[\u8bc6\u541b\u554a]<\/p>\n

                      \u4e0d\u8981\u505aAPI\u7684\u642c\u8fd0\u5de5，\u8981\u505a\u539f\u7406\u7684\u63a2\u7d22\u8005！<\/p>\n","protected":false},"excerpt":{"rendered":"

                      MyBatis-Plus \u903b\u8f91\u5220\u9664\u5bfc\u81f4\u552f\u4e00\u7d22\u5f15\u51b2\u7a81\u7684\u89e3\u51b3\u65b9\u6848
                      \n\u524d\u8a00
                      \n\u6700\u8fd1\u5728\u5f00\u53d1\u4e00\u4e2a Spring Boot \u8bb0\u8d26\u7cfb\u7edf\u65f6，\u9047\u5230\u4e86\u4e00\u4e2a\u5173\u4e8e MyBatis-Plus \u903b\u8f91\u5220\u9664\u7684\u5751：\u7528\u6237\u5220\u9664\u67d0\u4e2a\u7c7b\u578b\u540e，\u518d\u6b21\u6dfb\u52a0\u540c\u540d\u7c7b\u578b\u65f6\u63d0\u793a\\”\u6570\u636e\u91cd\u590d\\”\u3002\u660e\u660e\u524d\u7aef\u67e5\u8be2\u4e0d\u5230\u8fd9\u4e2a\u7c7b\u578b，\u4e3a\u4ec0\u4e48\u8fd8\u4f1a\u51b2\u7a81\u5462？
                      \n\u7ecf\u8fc7\u4e00\u756a\u6392\u67e5，\u53d1\u73b0\u662f MyBatis-Plus \u903b\u8f91\u5220\u9664\u673a\u5236\u4e0e\u6570\u636e\u5e93\u552f\u4e00\u7d22\u5f15\u7684\u51b2\u7a81\u5bfc\u81f4\u7684\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u5206\u6790\u95ee\u9898\u539f\u56e0&#x<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[8148,8147,8146,99,1769,98],"topic":[],"class_list":["post-76033","post","type-post","status-publish","format-standard","hentry","category-server","tag-mybatis-plus","tag-8147","tag-8146","tag-java","tag-mybatis","tag-spring-boot"],"yoast_head":"\nMyBatis-Plus \u903b\u8f91\u5220\u9664\u5bfc\u81f4\u552f\u4e00\u7d22\u5f15\u51b2\u7a81\u7684\u89e3\u51b3\u65b9\u6848 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/76033.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MyBatis-Plus \u903b\u8f91\u5220\u9664\u5bfc\u81f4\u552f\u4e00\u7d22\u5f15\u51b2\u7a81\u7684\u89e3\u51b3\u65b9\u6848 - 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