{"id":1317,"date":"2024-11-03T21:09:42","date_gmt":"2024-11-03T13:09:42","guid":{"rendered":"https:\/\/note.ui11.cc\/?p=1317"},"modified":"2024-11-30T09:08:15","modified_gmt":"2024-11-30T01:08:15","slug":"mybatis-plus","status":"publish","type":"post","link":"https:\/\/note.ui11.cc\/index.php\/2024\/11\/03\/mybatis-plus\/","title":{"rendered":"Mybatis-plus"},"content":{"rendered":"\n

\u7b2c\u4e00\u6b65\uff1a\u5bfc\u5165\u4f9d\u8d56\uff1a<\/p>\n\n\n\n

<dependency>\n            <groupId>com.baomidou<\/groupId>\n            <artifactId>mybatis-plus-boot-starter<\/artifactId>\n            <version>3.5.3.1<\/version>\n        <\/dependency><\/code><\/pre>\n\n\n\n
\u5bfc\u5165Mybatis-plus\u7684\u4f9d\u8d56\u540e\u5c31\u4e0d\u9700\u8981\u5bfc\u5165Mybatis\u7684\u4f9d\u8d56\u4e86<\/p>\n\n\n\n
\u7b2c\u4e8c\u6b65\uff1a<\/p>\n\n\n\n
\u8ba9Usermapper\u7ee7\u627fBaseMapper<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u6ce8\u610f\uff1a\u5728\u7ee7\u627f\u7684\u8fc7\u7a0b\u4e2d\u8981\u6ce8\u610fBaseMapper<>\u4e2d\u7684\u6cdb\u578b\u8981\u5b9e\u73b0\u58f0\u660e\u597d\uff0c\u5e94\u8be5\u4e3a\u5b9e\u4f53\u7c7b\u4e2d\u7684\u7c7b\u578b<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u5e38\u89c1\u6ce8\u89e3\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u4e00\uff1a<\/p>\n\n\n\n
@TableName:\u7528\u6765\u6307\u5b9a\u8868\u540d<\/p>\n\n\n\n
@TableId:\u7528\u6765\u6307\u5b9a\u8868\u4e2d\u4e3b\u952e\u7684\u4fe1\u606f<\/p>\n\n\n\n
@TableField:\u7528\u6765\u6307\u5b9a\u8868\u4e2d\u666e\u901a\u5b57\u6bb5\u7684\u540d\u5b57<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
 MyBatisPlus \u4e2d\uff0c\u5bf9\u4e8e\u81ea\u589e\uff08Auto-Increment\uff09\u4e3b\u952e\u7684\u751f\u6210\u7b56\u7565<\/p>\n\n\n\n
1. \u6570\u636e\u5e93\u81ea\u589e\uff08\u5982 MySQL \u7684\u81ea\u589e\u4e3b\u952e\uff09<\/h3>\n\n\n\n
    \n
  • \u914d\u7f6e\u65b9\u5f0f<\/strong>\uff1a\n
      \n
    • \u9996\u5148\uff0c\u5728\u6570\u636e\u5e93\u8868\u8bbe\u8ba1\u65f6\uff0c\u5c06\u5bf9\u5e94\u7684\u4e3b\u952e\u5b57\u6bb5\u8bbe\u7f6e\u4e3a\u81ea\u589e\u7c7b\u578b\uff08\u4f8b\u5982\u5728 MySQL \u4e2d\u4f7f\u7528AUTO_INCREMENT<\/code>\u5173\u952e\u5b57\uff09\u3002<\/li>\n\n\n\n
    • \u5728\u5b9e\u4f53\u7c7b\u4e2d\uff0c\u5bf9\u5e94\u7684\u4e3b\u952e\u5b57\u6bb5\u4f7f\u7528@TableId<\/code>\u6ce8\u89e3\uff0c\u5e76\u8bbe\u7f6etype<\/code>\u5c5e\u6027\u4e3aIdType.AUTO<\/code>\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
      import com.baomidou.mybatisplus.annotation.IdType;\nimport com.baomidou.mybatisplus.annotation.TableId;\nimport com.baomidou.mybatisplus.annotation.TableName;\n\n@TableName(\"your_table_name\")\npublic class YourEntity {\n\n    @TableId(type = IdType.AUTO)\n    private Long id;\n\n    \/\/ \u5176\u4ed6\u5b57\u6bb5\u53ca\u5bf9\u5e94\u7684getter\u548csetter\u65b9\u6cd5\n    \/\/...\n}<\/code><\/pre>\n\n\n\n
        \n
      • \u751f\u6210\u7b56\u7565\u8bf4\u660e<\/strong>\uff1a\n
          \n
        • \u5f53\u5411\u6570\u636e\u5e93\u63d2\u5165\u4e00\u6761\u65b0\u8bb0\u5f55\u65f6\uff0c\u6570\u636e\u5e93\u4f1a\u81ea\u52a8\u4e3a\u4e3b\u952e\u5b57\u6bb5\u5206\u914d\u4e00\u4e2a\u9012\u589e\u7684\u503c\uff0cMyBatisPlus \u5728\u6267\u884c\u63d2\u5165\u64cd\u4f5c\u65f6\uff0c\u4f1a\u4ece\u6570\u636e\u5e93\u83b7\u53d6\u5230\u8fd9\u4e2a\u81ea\u52a8\u751f\u6210\u7684\u4e3b\u952e\u503c\uff0c\u5e76\u586b\u5145\u5230\u5b9e\u4f53\u7c7b\u7684\u4e3b\u952e\u5b57\u6bb5\u4e2d\uff0c\u4ee5\u4fbf\u540e\u7eed\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
          2. \u96ea\u82b1\u7b97\u6cd5\uff08Snowflake\uff09\u751f\u6210\u5206\u5e03\u5f0f\u552f\u4e00 ID<\/h3>\n\n\n\n
            \n
          • \u914d\u7f6e\u65b9\u5f0f<\/strong>\uff1a\n
              \n
            • \u5728\u5b9e\u4f53\u7c7b\u7684\u4e3b\u952e\u5b57\u6bb5\u4e0a\u4f7f\u7528@TableId<\/code>\u6ce8\u89e3\uff0c\u5e76\u8bbe\u7f6etype<\/code>\u5c5e\u6027\u4e3aIdType.ASSIGN_ID<\/code>\u3002\u793a\u4f8b\uff1a<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
              import com.baomidou.mybatisplus.annotation.IdType;\nimport com.baomidou.mybatisplus.annotation.TableId;\nimport com.baomidou.mybatisplus.annotation.TableName;\n\n@TableName(\"your_table_name\")\npublic class YourEntity {\n\n    @TableId(type = IdType.ASSIGN_ID)\n    private Long id;\n\n    \/\/ \u5176\u4ed6\u5b57\u6bb5\u53ca\u5bf9\u5e94\u7684getter\u548csetter\u65b9\u6cd5\n    \/\/...\n}<\/code><\/pre>\n\n\n\n
                \n
              • \u751f\u6210\u7b56\u7565\u8bf4\u660e<\/strong>\uff1a\n
                  \n
                • MyBatisPlus \u4f1a\u4f7f\u7528\u96ea\u82b1\u7b97\u6cd5\u6765\u751f\u6210\u4e00\u4e2a\u957f\u5ea6\u4e3a 19 \u4f4d\u7684\u5206\u5e03\u5f0f\u552f\u4e00 ID \u4f5c\u4e3a\u4e3b\u952e\u503c\u3002\u96ea\u82b1\u7b97\u6cd5\u751f\u6210\u7684 ID \u5177\u6709\u552f\u4e00\u6027\u3001\u6709\u5e8f\u6027\uff08\u5728\u4e00\u5b9a\u65f6\u95f4\u8303\u56f4\u5185\u6309\u65f6\u95f4\u5148\u540e\u751f\u6210\u7684 ID \u662f\u6709\u5e8f\u7684\uff09\u7b49\u7279\u70b9\uff0c\u9002\u7528\u4e8e\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u9700\u8981\u751f\u6210\u552f\u4e00\u6807\u8bc6\u7b26\u7684\u573a\u666f\uff0c\u6bd4\u5982\u5728\u591a\u4e2a\u8282\u70b9\u540c\u65f6\u63d2\u5165\u6570\u636e\u65f6\uff0c\u80fd\u4fdd\u8bc1\u6bcf\u4e2a\u8bb0\u5f55\u90fd\u6709\u552f\u4e00\u7684\u4e3b\u952e\u503c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
                  3. \u5176\u4ed6 ID \u751f\u6210\u7b56\u7565<\/h3>\n\n\n\n
                    \n
                  • UUID\uff08\u901a\u7528\u552f\u4e00\u8bc6\u522b\u7801\uff09\u7b56\u7565\uff08\u4e0d\u5e38\u7528\uff0c\u5b58\u5728\u4e00\u4e9b\u6027\u80fd\u548c\u5b58\u50a8\u95ee\u9898\uff09<\/strong>\uff1a\n
                      \n
                    • \u914d\u7f6e\u65b9\u5f0f<\/strong>\uff1a\u901a\u8fc7\u8bbe\u7f6e@TableId<\/code>\u6ce8\u89e3\u7684type<\/code>\u5c5e\u6027\u4e3aIdType.ASSIGN_UUID<\/code>\u6765\u542f\u7528\u3002<\/li>\n\n\n\n
                    • \u751f\u6210\u7b56\u7565\u8bf4\u660e<\/strong>\uff1a\u4f1a\u751f\u6210\u4e00\u4e2a 36 \u4f4d\u7684\u5b57\u7b26\u4e32\u5f62\u5f0f\u7684\u901a\u7528\u552f\u4e00\u8bc6\u522b\u7801\u4f5c\u4e3a\u4e3b\u952e\u503c\u3002\u4f46\u7531\u4e8e UUID \u662f\u968f\u673a\u751f\u6210\u7684\uff0c\u4e14\u957f\u5ea6\u8f83\u957f\uff0c\u5728\u6570\u636e\u5e93\u5b58\u50a8\u548c\u7d22\u5f15\u67e5\u8be2\u7b49\u65b9\u9762\u53ef\u80fd\u4f1a\u5e26\u6765\u4e00\u4e9b\u6027\u80fd\u635f\u8017\uff0c\u6240\u4ee5\u4e00\u822c\u4e0d\u592a\u63a8\u8350\u5728\u9ad8\u5e76\u53d1\u7b49\u6027\u80fd\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u666f\u4e0b\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                    • \u57fa\u4e8e\u6570\u636e\u5e93\u5e8f\u5217\u751f\u6210\uff08\u9002\u7528\u4e8e\u90e8\u5206\u6570\u636e\u5e93\u5982 Oracle\uff09<\/strong>\uff1a\n
                        \n
                      • \u914d\u7f6e\u65b9\u5f0f<\/strong>\uff1a\u5bf9\u4e8e\u652f\u6301\u5e8f\u5217\u7684\u6570\u636e\u5e93\uff08\u5982 Oracle\uff09\uff0c\u53ef\u4ee5\u5728\u5b9e\u4f53\u7c7b\u7684\u4e3b\u952e\u5b57\u6bb5\u4e0a\u4f7f\u7528@TableId<\/code>\u6ce8\u89e3\uff0c\u5e76\u8bbe\u7f6etype<\/code>\u4e3aIdType.ASSIGN_SEQ<\/code>\u3002\u540c\u65f6\uff0c\u9700\u8981\u914d\u7f6e\u76f8\u5e94\u7684\u5e8f\u5217\u4fe1\u606f\uff08\u6bd4\u5982\u5728 MyBatisPlus \u7684\u5168\u5c40\u914d\u7f6e\u6216\u7279\u5b9a\u7684 Mapper \u914d\u7f6e\u4e2d\u6307\u5b9a\u5e8f\u5217\u540d\u79f0\u7b49\uff09\u3002<\/li>\n\n\n\n
                      • \u751f\u6210\u7b56\u7565\u8bf4\u660e<\/strong>\uff1a\u4f1a\u6839\u636e\u6570\u636e\u5e93\u4e2d\u7684\u5e8f\u5217\u6765\u751f\u6210\u4e3b\u952e\u503c\uff0c\u6bcf\u6b21\u83b7\u53d6\u4e0b\u4e00\u4e2a\u5e8f\u5217\u503c\u4f5c\u4e3a\u65b0\u8bb0\u5f55\u7684\u4e3b\u952e\uff0c\u4ee5\u4fdd\u8bc1\u4e3b\u952e\u7684\u552f\u4e00\u6027\u548c\u6709\u5e8f\u6027\uff08\u6309\u7167\u5e8f\u5217\u7684\u751f\u6210\u987a\u5e8f\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
                        \u4e0d\u540c\u7684\u81ea\u589e\u751f\u6210\u7b56\u7565\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\uff0c\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\uff08\u5982\u662f\u5426\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\u3001\u6570\u636e\u5e93\u7c7b\u578b\u3001\u6027\u80fd\u8981\u6c42\u7b49\uff09\u6765\u9009\u62e9\u5408\u9002\u7684\u4e3b\u952e\u751f\u6210\u7b56\u7565\u3002<\/p>\n\n\n\n
                        INPUT:\u901a\u8fc7set\u65b9\u6cd5\u81ea\u884c\u767b\u5f55<\/p>\n\n\n\n
                        @TableField<\/code>\u6ce8\u89e3<\/strong><\/p>\n\n\n\n
                        1. \u6ce8\u89e3\u7684\u4f5c\u7528<\/h3>\n\n\n\n
                        @TableField<\/code>\u6ce8\u89e3\u4e3b\u8981\u7528\u4e8e\u5728\u5b9e\u4f53\u7c7b\u4e2d\u5bf9\u6570\u636e\u5e93\u8868\u5b57\u6bb5\u8fdb\u884c\u4e00\u4e9b\u989d\u5916\u7684\u914d\u7f6e\u548c\u6620\u5c04\u8bf4\u660e\uff0c\u4ee5\u786e\u4fdd\u5b9e\u4f53\u7c7b\u4e0e\u6570\u636e\u5e93\u8868\u4e4b\u95f4\u7684\u5b57\u6bb5\u5bf9\u5e94\u5173\u7cfb\u66f4\u52a0\u51c6\u786e\u548c\u7075\u6d3b\u5904\u7406\u4e00\u4e9b\u7279\u6b8a\u60c5\u51b5\u3002<\/p>\n\n\n\n
                        2. \u5e38\u7528\u5c5e\u6027\u53ca\u529f\u80fd<\/h3>\n\n\n\n
                        exist \u5c5e\u6027<\/h4>\n\n\n\n
                          \n
                        • \u4f5c\u7528<\/strong>\uff1a\u7528\u4e8e\u6307\u5b9a\u8be5\u5b9e\u4f53\u7c7b\u4e2d\u7684\u5b57\u6bb5\u5728\u6570\u636e\u5e93\u8868\u4e2d\u662f\u5426\u771f\u5b9e\u5b58\u5728\u3002<\/li>\n\n\n\n
                        • \u793a\u4f8b\u53ca\u8bf4\u660e<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                          public class YourEntity {\n\n    @TableId(type = IdType.AUTO)\n    private Long id;\n\n    @TableField(exist = false)\n    private String virtualField;\n\n    \/\/ \u5176\u4ed6\u5b57\u6bb5\u53ca\u5bf9\u5e94\u7684getter\u548csetter\u65b9\u6cd5\n    \/\/...\n}<\/code><\/pre>\n\n\n\n
                          \u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0cvirtualField<\/code>\u5b57\u6bb5\u4f7f\u7528\u4e86@TableField(exist = false)<\/code>\u6ce8\u89e3\uff0c\u8fd9\u8868\u793a\u8be5\u5b57\u6bb5\u5728\u6570\u636e\u5e93\u8868\u4e2d\u5e76\u4e0d\u5b58\u5728\uff0c\u5b83\u53ef\u80fd\u662f\u4ec5\u5728\u5b9e\u4f53\u7c7b\u5c42\u9762\u7528\u4e8e\u4e34\u65f6\u5b58\u50a8\u6570\u636e\u3001\u8ba1\u7b97\u7ed3\u679c\u7b49\u7528\u9014\uff0c\u5728\u8fdb\u884c\u6570\u636e\u5e93\u64cd\u4f5c\uff08\u5982\u63d2\u5165\u3001\u66f4\u65b0\u7b49\uff09\u65f6\uff0cMyBatisPlus \u4e0d\u4f1a\u5c06\u8be5\u5b57\u6bb5\u5bf9\u5e94\u7684\u6570\u636e\u53d1\u9001\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n\n\n\n
                          value \u5c5e\u6027<\/h4>\n\n\n\n
                            \n
                          • \u4f5c\u7528<\/strong>\uff1a\u7528\u4e8e\u6307\u5b9a\u5b9e\u4f53\u7c7b\u4e2d\u7684\u5b57\u6bb5\u5bf9\u5e94\u7684\u6570\u636e\u5e93\u8868\u4e2d\u7684\u5177\u4f53\u5b57\u6bb5\u540d\u3002<\/li>\n\n\n\n
                          • \u793a\u4f8b\u53ca\u8bf4\u660e<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                            public class YourEntity {\n\n    @TableId(type = IdType.AUTO)\n    private Long id;\n\n    @TableField(value = \"db_column_name\")\n    private String fieldName;\n\n    \/\/ \u5176\u4ed6\u5b57\u6bb5\u53ca\u5bf9\u5e94\u7684getter\u548csetter\u65b9\u6cd5\n    \/\/...\n}<\/code><\/pre>\n\n\n\n
                            \u8fd9\u91cc\uff0cfieldName<\/code>\u5b57\u6bb5\u901a\u8fc7@TableField(value = \"db_column_name\")<\/code>\u6ce8\u89e3\u660e\u786e\u4e86\u5176\u5bf9\u5e94\u7684\u6570\u636e\u5e93\u8868\u4e2d\u7684\u5b57\u6bb5\u540d\u4e3adb_column_name<\/code>\u3002\u8fd9\u5728\u6570\u636e\u5e93\u8868\u5b57\u6bb5\u540d\u548c\u5b9e\u4f53\u7c7b\u5b57\u6bb5\u540d\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u6bd4\u5982\u6570\u636e\u5e93\u8868\u4e2d\u6709\u4e2a\u5b57\u6bb5\u53ebuser_name<\/code>\uff0c\u800c\u5b9e\u4f53\u7c7b\u4e2d\u4e60\u60ef\u7528username<\/code>\u6765\u8868\u793a\u8be5\u5c5e\u6027\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u8fdb\u884c\u51c6\u786e\u6620\u5c04\u3002<\/p>\n\n\n\n
                            condition \u5c5e\u6027<\/h4>\n\n\n\n
                              \n
                            • \u4f5c\u7528<\/strong>\uff1a\u7528\u4e8e\u5728\u6267\u884c\u67e5\u8be2\u64cd\u4f5c\u65f6\u8bbe\u7f6e\u67e5\u8be2\u6761\u4ef6\u7684\u9644\u52a0\u89c4\u5219\u3002<\/li>\n\n\n\n
                            • \u793a\u4f8b\u53ca\u8bf4\u660e<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                              public class YourEntity { @TableId(type = IdType.AUTO) private Long id; @TableField(condition = SqlCondition.LIKE) private String searchableField; \/\/ \u5176\u4ed6\u5b57\u6bb5\u53ca\u5bf9\u5e94\u7684getter\u548csetter\u65b9\u6cd5 \/\/… }<\/p>\n\n\n\n
                              \u5047\u8bbe\u5728\u8fdb\u884c\u67e5\u8be2\u64cd\u4f5c\u65f6\uff0c\u5f53\u6d89\u53ca\u5230searchableField<\/code>\u5b57\u6bb5\uff0c\u901a\u8fc7\u8bbe\u7f6e@TableField(condition = SqlCondition.LIKE)<\/code>\uff0c\u53ef\u4ee5\u4f7f\u5f97\u5728\u6784\u5efa\u67e5\u8be2\u8bed\u53e5\u65f6\uff0c\u5bf9\u8be5\u5b57\u6bb5\u7684\u67e5\u8be2\u4f1a\u4ee5LIKE<\/code>\u7684\u65b9\u5f0f\u8fdb\u884c\uff08\u6bd4\u5982\u5728 MyBatisPlus \u7684\u6761\u4ef6\u67e5\u8be2\u6784\u5efa\u5668\u4e2d\u4f7f\u7528\u65f6\uff09\uff0c\u5373\u4f1a\u6309\u7167\u6a21\u7cca\u67e5\u8be2\u7684\u65b9\u5f0f\u5904\u7406\u8be5\u5b57\u6bb5\u7684\u67e5\u8be2\u6761\u4ef6\u3002<\/p>\n\n\n\n
                              update \u5c5e\u6027<\/h4>\n\n\n\n
                                \n
                              • \u4f5c\u7528<\/strong>\uff1a\u7528\u4e8e\u6307\u5b9a\u5728\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\u65f6\uff0c\u8be5\u5b57\u6bb5\u662f\u5426\u53c2\u4e0e\u66f4\u65b0\u3002<\/li>\n\n\n\n
                              • \u793a\u4f8b\u53ca\u8bf4\u660e<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n
                                public class YourEntity {\n\n    @TableId(type = IdType.AUTO)\n    private Long id;\n\n    @TableField(update = false)\n    private String noUpdateField;\n\n    \/\/ \u5176\u4ed6\u5b57\u6bb5\u53ca\u5bf9\u5e94\u7684getter\u548csetter\u65b9\u6cd5\n    \/\/...\n}<\/code><\/pre>\n\n\n\n
                                \u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0cnoUpdateField<\/code>\u5b57\u6bb5\u8bbe\u7f6e\u4e86@TableField(update = false)<\/code>\uff0c\u8fd9\u610f\u5473\u7740\u5728\u5bf9\u5b9e\u4f53\u7c7b\u5bf9\u5e94\u7684\u6570\u636e\u5e93\u8868\u8fdb\u884c\u66f4\u65b0\u64cd\u4f5c\u65f6\uff0c\u8be5\u5b57\u6bb5\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u66f4\u65b0\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u5373\u4f7f\u5b9e\u4f53\u7c7b\u4e2d\u8be5\u5b57\u6bb5\u7684\u503c\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/p>\n\n\n\n
                                3. \u4f7f\u7528\u573a\u666f\u603b\u7ed3<\/h3>\n\n\n\n
                                  \n
                                • \u89e3\u51b3\u5b57\u6bb5\u540d\u6620\u5c04\u5dee\u5f02<\/strong>\uff1a\u5f53\u5b9e\u4f53\u7c7b\u5b57\u6bb5\u540d\u548c\u6570\u636e\u5e93\u8868\u5b57\u6bb5\u540d\u4e0d\u4e00\u81f4\u65f6\uff0c\u901a\u8fc7@TableField(value = \u2026)<\/code>\u6765\u51c6\u786e\u6620\u5c04\u4e24\u8005\u5173\u7cfb\uff0c\u786e\u4fdd\u6570\u636e\u7684\u6b63\u786e\u8bfb\u5199\u3002<\/li>\n\n\n\n
                                • \u5904\u7406\u865a\u62df\u5b57\u6bb5<\/strong>\uff1a\u5bf9\u4e8e\u90a3\u4e9b\u4ec5\u5b58\u5728\u4e8e\u5b9e\u4f53\u7c7b\u5c42\u9762\u800c\u4e0d\u5728\u6570\u636e\u5e93\u8868\u4e2d\u7684\u5b57\u6bb5\uff0c\u4f7f\u7528@TableField(exist = false)<\/code>\u6765\u544a\u77e5 MyBatisPlus \u5728\u6570\u636e\u5e93\u64cd\u4f5c\u65f6\u4e0d\u5904\u7406\u8be5\u5b57\u6bb5\u3002<\/li>\n\n\n\n
                                • \u5b9a\u5236\u67e5\u8be2\u6761\u4ef6<\/strong>\uff1a\u5728\u9700\u8981\u5bf9\u67d0\u4e9b\u5b57\u6bb5\u5728\u67e5\u8be2\u65f6\u8bbe\u7f6e\u7279\u6b8a\u7684\u67e5\u8be2\u6761\u4ef6\u65b9\u5f0f\uff08\u5982\u6a21\u7cca\u67e5\u8be2\u7b49\uff09\u65f6\uff0c\u5229\u7528@TableField(condition = \u2026)<\/code>\u6765\u5b9e\u73b0\u3002<\/li>\n\n\n\n
                                • \u63a7\u5236\u5b57\u6bb5\u66f4\u65b0\u53c2\u4e0e\u5ea6<\/strong>\uff1a\u5f53\u5e0c\u671b\u5728\u66f4\u65b0\u64cd\u4f5c\u4e2d\u67d0\u4e9b\u5b57\u6bb5\u4e0d\u53c2\u4e0e\u66f4\u65b0\u65f6\uff0c\u901a\u8fc7@TableField(update = false)<\/code>\u6765\u5b9e\u73b0\u8fd9\u4e00\u76ee\u7684\u3002<\/li>\n<\/ul>\n\n\n\n
                                  \u603b\u4e4b\uff0c@TableField<\/code>\u6ce8\u89e3\u4e3a MyBatisPlus \u5728\u5b9e\u4f53\u7c7b\u4e0e\u6570\u636e\u5e93\u8868\u4e4b\u95f4\u7684\u5b57\u6bb5\u6620\u5c04\u3001\u64cd\u4f5c\u5904\u7406\u7b49\u65b9\u9762\u63d0\u4f9b\u4e86\u66f4\u52a0\u7075\u6d3b\u548c\u7cbe\u7ec6\u7684\u63a7\u5236\u624b\u6bb5\u3002<\/p>\n\n\n\n
                                  \u81ea\u5b9a\u4e49SQL\uff1a<\/strong><\/p>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  \u5728Controller\u5c42\u8c03\u7528Service\u5c42\u7684\u63a5\u53e3\uff0c\u5728Service\u7684\u5b9e\u73b0\u7c7b\u4e2d\u8c03\u7528Mapper\u5c42\u7684\u65b9\u6cd5\uff0c\u4f7f\u7528mp\u9700\u8981\u5728Controller\u5c31\u8c03\u7528wrapper\u6765\u4ee3\u66ffxml\u4e2d\u7684where\u6761\u4ef6\uff0c\u4e0d\u8fc7where\u6761\u4ef6\u524d\u9762\u7684update\u6216\u8005select\u8bed\u53e5\u8fd8\u662f\u8981\u81ea\u5df1\u5199\u7684\uff0cmp\u5728\u9047\u5230\u590d\u6742\u7684where\u6761\u4ef6\u7684\u65f6\u5019\u8fd8\u662f\u8981mb\u548cmp\u7ed3\u5408\uff0c\u7701\u53bb\u4e86where\u6761\u4ef6\uff0c\u6ce8\u610f \u4f8b\u5982\u4e0a\u56fe\uff1a<\/p>\n\n\n\n
                                  balance-#{balance} ${ew.customSqlSegment} \u6ce8\u610f$\u524d\u9762\u6709\u4e2a\u7a7a\u683c\uff0c\u4e0d\u7136\u62a5\u9519<\/p>\n\n\n\n
                                  Service\u63a5\u53e3\uff1a<\/strong><\/p>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  \u6211\u4eec\u7684\u81ea\u5b9a\u4e49\u63a5\u53e3\u7ee7\u627fmp\u63d0\u4f9b\u7684\u63a5\u53e3\u3002\u6211\u4eec\u7684\u63a5\u53e3\u5b9e\u73b0\u7c7b\u53bb\u7ee7\u627fmp\u7ed9\u7684\u5b9e\u73b0\u7c7b\uff0c<\/p>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  \/\/\u6ce8\u610f\u6307\u5b9a\u6cdb\u578b\uff0c\u6cdb\u578b\u4e3a\u6211\u4eec\u7684\u5b9e\u4f53<\/pre>\n\n\n\n
                                  \u5b9e\u73b0\u7c7b\u8981\u7ed9\u4e24\u4e2a\u53c2\u6570\uff0c\u4e00\u4e2a\u662fmapper\u7c7b\u578b\uff0c\u4e00\u4e2a\u662f\u5b9e\u4f53\u7c7b\u578b\uff0c<\/p>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  \u6848\u4f8b\uff1a<\/p>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  LambdaQurey\u67e5\u8be2\uff1a<\/p>\n\n\n\n
                                   @Override\n    public List<User> queryUsers(String name, Integer status, Integer minBalance, Integer maxBalance) {\n        List<User> users = lambdaQuery().like(name != null, User::getUsername, name)\n                .eq(status != null, User::getStatus, status)\n                .gt(minBalance != null, User::getBalance, minBalance)\n                .le(maxBalance != null, User::getBalance, maxBalance)\n                .list(); \/\/\u5982\u679c\u67e5\u8be2\u4e00\u4e2a\u7684\u8bdd\u662fone\n\n\n        return users;\n\n    }\n}<\/code><\/pre>\n\n\n\n
                                  <\/p>\n\n\n\n
                                  <\/p>\n\n\n\n
                                  <\/p>\n\n\n\n
                                  <\/p>\n","protected":false},"excerpt":{"rendered":"
                                  \u7b2c\u4e00\u6b65\uff1a\u5bfc\u5165\u4f9d\u8d56\uff1a \u5bfc\u5165Mybatis-plus\u7684\u4f9d\u8d56\u540e\u5c31\u4e0d\u9700\u8981\u5bfc\u5165Mybatis\u7684\u4f9d\u8d56\u4e86 \u7b2c\u4e8c\u6b65\uff1a \u8ba9Use […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1317","post","type-post","status-publish","format-standard","hentry","category-mybatisplus"],"_links":{"self":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/comments?post=1317"}],"version-history":[{"count":2,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1317\/revisions"}],"predecessor-version":[{"id":1336,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/posts\/1317\/revisions\/1336"}],"wp:attachment":[{"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/media?parent=1317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/categories?post=1317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/note.ui11.cc\/index.php\/wp-json\/wp\/v2\/tags?post=1317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}