{"id":606,"date":"2025-04-29T00:57:49","date_gmt":"2025-04-28T16:57:49","guid":{"rendered":"https:\/\/awamyy.top\/?p=606"},"modified":"2025-04-29T22:11:43","modified_gmt":"2025-04-29T14:11:43","slug":"mybatis-plus%e5%9f%ba%e6%9c%ac%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/awamyy.top\/?p=606","title":{"rendered":"Mybatis-Plus\u57fa\u672c\u64cd\u4f5c"},"content":{"rendered":"\n

\u5e38\u7528\u914d\u7f6e\u9879\u4ecb\u7ecd<\/strong><\/p>\n\n\n\n

application.yml\u793a\u4f8b\uff1a<\/strong>\nmybatis-plus:\n  configuration:\n    #\u4f7f\u7528\u65e5\u5fd7\n    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl\n   #\u914d\u7f6e\u7c7b\u578b\u522b\u540d(mapper.xml\u4e2d\u7684resultType)\u6240\u5bf9\u5e94\u7684\u5305\uff0c\n   #\u7701\u53bbxml\u6bcf\u6b21\u90fd\u6307\u5b9a\u5b8c\u6574\u7684\u7c7b\u540d\uff0c\u7c7b\u540d\u53ca\u7c7b\u578b\u540d\n   type-aliases-package: <\u4f60\u7684\u5b9e\u4f53\u7c7b\u8def\u5f84(entity\/pojo?)>\n   #\u6307\u5b9aMapper XML\u6587\u4ef6\u7684\u626b\u63cf\u8def\u5f84\n   mybatis-plus.mapper-locations=classpath*:mapper\/**\/*.xml<\/code><\/pre>\n\n\n\n
\u5e38\u7528\u6ce8\u89e3<\/strong><\/p>\n\n\n\n
@TableId<\/strong><\/p>\n\n\n\n
\u6620\u5c04(value)\u4e3b\u952e\u548c\u5bf9ID\u7684\u751f\u6210\u65b9\u5f0f\u7ba1\u7406\uff0c\u793a\u4f8b\uff1a<\/strong>\npublic class User {\n    @TableId(value = \"num\" , type = IdType.[AUTO\/INPUT\/ASSIGN_ID\/ASSIGN_UUID])\n    private Integer id;\n    private String username;\n    private String password;\n}\n\u2191\u2191\u2191\u2191type\u4e0d\u6307\u5b9a\u503c\u65f6\uff0c\u9ed8\u8ba4\u751f\u6210\u7684\u4e3b\u952eID\u662f\u57fa\u4e8e\u96ea\u82b1\u7b97\u6cd5\u751f\u6210\u7684\u2191\u2191\u2191\u2191\ntype\uff1a\u6307\u5b9a\u4e3b\u952e\u751f\u6210\u7b56\u7565\uff0c\u4f18\u5148\u7ea7\u5927\u4e8e\u6570\u636e\u5e93\u8bbe\u7f6e\u7684\u81ea\u589e\n .AUTO\uff1a\u81ea\u52a8\u8d4b\u503c\uff0c\u9ed8\u8ba4\u6570\u636e\u5e93\u81ea\u589e\n .INPUT\uff1a\u624b\u52a8\u8d4b\u503c\uff0c\u82e5\u672a\u8d4b\u503c\u5219\u6570\u636e\u5e93\u4f1a\u901a\u8fc7\u81ea\u589e\u65b9\u5f0f\u8d4b\u503c\n .ASSIGN_ID\uff1a\u81ea\u52a8\u8d4b\u503c\uff0c\u6570\u5b57\u7c7b\u578b\u6216\u8005\u6570\u5b57\u5f62\u5f0f\u7684\u5b57\u7b26\u4e32\uff0c\u57fa\u4e8e\u96ea\u82b1\u7b97\u6cd5\n .ASSIGN_UUID\uff1a\u81ea\u52a8\u8d4b\u503c\uff0cString\u7c7b\u578b\uff0c\u81ea\u52a8\u751f\u6210UUID(\u6570\u5b57\u5b57\u6bcd\u7ec4\u5408)\u8fdb\u884c\u8d4b\u503c<\/code><\/pre>\n\n\n\n
@TableName\u3001@TableField<\/strong><\/p>\n\n\n\n
\u5206\u522b\u662f\u6620\u5c04\u6570\u636e\u5e93\u8868\u3001\u6620\u5c04\u975e\u4e3b\u952e\u5b57\u6bb5\uff0c\u793a\u4f8b\uff1a<\/strong>\n@TableName(value = \"player\")\npublic class User {\n    private Integer id;\n    @TableField(value = \"Account\" , exist = false)\n    private String username;\n    @TableField(select = false)\n    private String password;\n}\nvalue\uff1a\u6307\u5b9a\u8868\/\u5b57\u6bb5\u540d\nexist\uff1a\u662f\u5426\u4e3a\u6570\u636e\u5e93\u5b57\u6bb5\uff0c\u9ed8\u8ba4true\nselect\uff1a\u662f\u5426\u67e5\u8be2\u6b64\u5b57\u6bb5\uff0c\u9ed8\u8ba4true<\/code><\/pre>\n\n\n\n
@Version(\u4e50\u89c2\u9501)<\/strong><\/p>\n\n\n\n
\n
\n
\u6807\u8bc6\u4e50\u89c2\u9501\u7248\u672c\u53f7\u5b57\u6bb5\uff0c\u793a\u4f8b\uff08Economy.java\uff09\uff1a<\/strong>\n@Data\n@NoArgsConstructor\n@AllArgsConstructor\n@TableName(value = \"economy\")\npublic class Economy {\n    @TableId(\"player_id\")\n    private BigInteger playerId;\n    private BigDecimal balance;\n    @TableField(fill = FieldFill.UPDATE)\n    private LocalDateTime lastTransactionTime;\n    @Version<\/mark>\n    private Integer version;\n}<\/code><\/pre>\n<\/div>\n\n\n\n
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\u6dfb\u52a0\u4e50\u89c2\u9501\u63d2\u4ef6\uff0c\u793a\u4f8b\uff08MybatisPlusConfig.java\uff09<\/strong>\uff1a\n@Configuration\npublic class MybatisPlusConfig {\n    @Bean\n    public MybatisPlusInterceptor mybatisPlusInterceptor(){\n        interceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());<\/mark>\n        return interceptor;\n    }\n}<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n
@TableLogic<\/strong><\/p>\n\n\n\n
\u6807\u8bc6\u8be5\u5b57\u6bb5\u4e3a\u903b\u8f91\u5220\u9664\u5b57\u6bb5\uff0c\u793a\u4f8b\uff1a<\/strong>\n@TableLogic(value=\"\u539f\u503c\",delval=\"\u6539\u503c\") | value = \"\u672a\u5220\u9664\u7684\u503c\uff0c\u9ed8\u8ba4\u503c\u4e3a0\"\uff0cdelval = \"\u5220\u9664\u540e\u7684\u503c\uff0c\u9ed8\u8ba4\u503c\u4e3a1\"\uff0c\u5373\u4e3a0\u65f6\u6807\u8bc6\u672a\u5220\u9664\uff0c\u4e3a1\u65f6\u8868\u793a\u5df2\u5220\u9664\uff0c\u67e5\u8be2\u65f6\u4f1a\u8fc7\u6ee4\r\n\u5f53\u4f7f\u7528\u4e86\u6b64\u6ce8\u89e3\uff0c\u8c03\u7528update\u65b9\u6cd5\u4fee\u6539\u8be5\u5b57\u6bb5\u7684\u503c\u65f6\uff0c\u4e0d\u4f1a\u5c06\u8be5\u5b57\u6bb5\u653e\u5165\u4fee\u6539\u5b57\u6bb5\u4e2d\uff0c\u800c\u662f\u5728\u6761\u4ef6\u5b57\u6bb5\u4e2dwhere\u6761\u4ef6\u540e<\/code><\/pre>\n\n\n\n
\u5206\u9875\u63d2\u4ef6<\/strong><\/p>\n\n\n\n
\n
\n
\u5728Mybatis-plus 3.5.9+\u7248\u672c\u540e\uff0c\u5206\u9875\u63d2\u4ef6\u88ab\u5904\u7406\u62c6\u5206\uff0c\u8bf7\u5728pom.xml\u4e2d\u6dfb\u52a0\uff1a<\/strong>\n<dependency>\n   <groupId>com.baomidou<\/groupId>\n   <artifactId>mybatis-plus-jsqlparser<\/artifactId>\n   <version>\u786e\u4fdd\u7248\u672c\u548c MyBatis Plus \u4e3b\u5305\u4e00\u81f4<\/version> \n<\/dependency><\/code><\/pre>\n<\/div>\n\n\n\n
\n
\u6dfb\u52a0\u5206\u9875\u62e6\u622a\u5668\uff1a<\/strong>\n@Configuration\npublic class MybatisPlusConfig {\n @Bean\n public MybatisPlusInterceptor mybatisPlusInterceptor(){\n        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();\n        interceptor.addInnerInterceptor(new<\/mark>\nPaginationInnerInterceptor(DbType.MYSQL));<\/mark>\n        return interceptor;\n     }\n}<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n
\u6d4b\u8bd5\u7528\u4f8b\uff1a<\/strong>\n@Test\n public void testPage(){\n      LambdaQueryWrapper<Player> queryWrapper = new LambdaQueryWrapper<>();\n      queryWrapper.like(Player::getUsername,\"R\");\n      \/\/Page,of(\u5f53\u524d\u9875\u7801\uff0c\u6bcf\u9875\u663e\u793a\u6570\u91cf)\n      IPage<Player> page = playerService.page(Page.of(1,1),queryWrapper);  \n      List<Player> records = page.getRecords();\n      System.out.println(records);\n }<\/code><\/pre>\n\n\n\n
\u81ea\u52a8\u586b\u5145<\/strong><\/p>\n\n\n\n
\u81ea\u52a8\u586b\u5145\u5de5\u5177\u7c7b(MyMetaObjectHandler.java)\u793a\u4f8b\uff1a<\/strong>\n@Slf4j\n@Component\npublic class MyMetaObjectHandler implements MetaObjectHandler {\n    @Override\n    public void insertFill(MetaObject metaObject) {\n        log.info(\"\u5f00\u59cb\u63d2\u5165\u586b\u5145...\");\n        this.strictInsertFill(metaObject,\"createdAt\", LocalDateTime.class,LocalDateTime.now());\n        this.strictInsertFill(metaObject,\"updatedAt\",LocalDateTime.class,LocalDateTime.now());\n    }\n    @Override\n    public void updateFill(MetaObject metaObject) {\n        log.info(\"\u5f00\u59cb\u66f4\u65b0\u586b\u5145...\");\n        this.strictUpdateFill(metaObject,\"updatedAt\",LocalDateTime.class,LocalDateTime.now());\n        this.strictUpdateFill(metaObject,\"lastTransactionTime\",LocalDateTime.class,LocalDateTime.now());\n    }\n}<\/code><\/pre>\n\n\n\n
\u6807\u8bb0\u9700\u5b57\u6bb5\u586b\u5145\u7684\u5b57\u6bb5\u793a\u4f8b\uff1a<\/strong>\n@Data\n@AllArgsConstructor\n@NoArgsConstructor\n@TableName(value = \"player\")\npublic class Player {\n    @TableId(value = \"id\",type = IdType.AUTO)\n    private BigInteger id;\n    @TableField(value = \"uuid\")\n    private String uuid;\n    private String username;\n    private String passwordHash;\n    @TableField(fill = FieldFill.INSERT)\n    private LocalDateTime createdAt;\n    @TableField(fill = FieldFill.INSERT_UPDATE)<\/mark>\n    private LocalDateTime updatedAt;\n}<\/code><\/pre>\n\n\n\n
\u63a5\u5165\u591a\u6570\u636e\u6e90<\/strong><\/p>\n\n\n\n
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\n
\u5728pom.xml\u4e2d\u5f15\u5165\u4f9d\u8d56\uff1a<\/strong>\n<dependency>\n  <groupId>com.baomidou<\/groupId>\n  <artifactId>dynamic-datasource-spring-boot3-starter<\/artifactId>\n  <version>${version}<\/version>\n<\/dependency><\/code><\/pre>\n\n\n\n
\u591a\u6570\u636e\u6e90\u5e38\u7528\u6ce8\u89e3<\/strong><\/p>\n\n\n\n
@DS(value = \"DBName\") \/\/\u6307\u5b9a\u6240\u64cd\u4f5c\u7684\u6570\u636e\u5e93\uff0c\u4e5f\u53ef\u7528\u6765\u5207\u6362\u6570\u636e\u6e90\n-------------------------------------------------\n@Service\n@DS(\"slave\")\npublic class UserServiceImpl implements UserService {\n  @Autowired\n  private JdbcTemplate jdbcTemplate;\n  @Override\n  @DS(\"slave_1\")\n  public List selectByCondition() {\n    return jdbcTemplate.queryForList(\"select * from user where age >10\");\n  }\n}<\/code><\/pre>\n<\/div>\n\n\n\n
\n
application.yml\u914d\u7f6e\u6570\u636e\u6e90\uff1a<\/strong>\nspring:\n datasource:\n   dynamic:\n     #\u4e3b\u6570\u636e\u6e90\u540d\uff0c\u9ed8\u8ba4\u4e3amaster\n     primary: master\n     #\u662f\u5426\u4e25\u683c\u5339\u914d\u6570\u636e\u6e90\uff0c\u9ed8\u8ba4false\n     #true\uff1a\u672a\u5339\u914d\u5230\u6570\u636e\u6e90\u65f6\u629b\u51fa\u5f02\u5e38\uff0cfalse\uff1a\u4f7f\u7528\u9ed8\u8ba4\u6570\u636e\u6e90(master)\n     strict: false\n     datasource:\n       #\u4e3b\u6570\u636e\u6e90\u8282\u70b9\n       master:\n         url: jdbc:mysql:\/\/yourIpAddress:port\/dynamic\n         username: root\n         password: 123456\n         driver-class-name: com.mysql.jdbc.Driver\n       #\u4ece\u6570\u636e\u6e90\u8282\u70b9\n       slave_1:\n         url: jdbc:mysql:\/\/yourIpAddress:port\/\/dynamic\n         username: root\n         password: 123456\n         driver-class-name: com.mysql.jdbc.Driver<\/code><\/pre>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u5e38\u7528\u914d\u7f6e\u9879\u4ecb\u7ecd \u5e38\u7528\u6ce8\u89e3 @TableId @Ta \u2026<\/p>\n","protected":false},"author":1,"featured_media":634,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[24,1],"tags":[26],"_links":{"self":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts\/606"}],"collection":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=606"}],"version-history":[{"count":91,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts\/606\/revisions"}],"predecessor-version":[{"id":1152,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts\/606\/revisions\/1152"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/media\/634"}],"wp:attachment":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}