MyBatis-Plus实现逻辑删除功能解析

CREATE TABLE `tb_user` (
  `id` bigint NOT NULL COMMENT '主键ID',
  `name` varchar(30) COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '姓名',
  `age` int DEFAULT NULL COMMENT '年龄',
  `email` varchar(50) COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '邮箱',
  `create_time` timestamp NOT NULL COMMENT '创建时间',
  `update_time` timestamp NOT NULL COMMENT '更新时间',
  `delete_flag` tinyint(1) NOT NULL COMMENT '逻辑删除，0 - 未删除；-1 - 已删除',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci

@Data
@TableName("tb_user")
public class UserEntity {
    private Long id;
    private String name;
    private Integer age;
    private String email;

    @TableField(value = "create_time", fill = FieldFill.INSERT)
    private Date createTime;

    @TableField(value = "update_time", fill = FieldFill.INSERT_UPDATE)
    private Date updateTime;

    private Integer deleteFlag;
}

@Data
@TableName("tb_user")
public class UserEntity {
    private Long id;
    private String name;
    private Integer age;
    private String email;

    @TableField(value = "create_time", fill = FieldFill.INSERT)
    private Date createTime;

    @TableField(value = "update_time", fill = FieldFill.INSERT_UPDATE)
    private Date updateTime;

    @TableLogic(value = "0", delval = "-1")
    @TableField(value = "delete_flag", fill = FieldFill.INSERT)
    private Integer deleteFlag;
}

/**
 * 自动填充字段值得配置
 */
@Component
public class AutoFillFieldValueConfig implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {
        this.strictInsertFill(metaObject, "createTime", Date.class, new Date());
        this.strictInsertFill(metaObject, "updateTime", Date.class, new Date());
        this.strictInsertFill(metaObject, "deleteFlag", Integer.class, 0);
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        this.strictUpdateFill(metaObject, "updateTime", Date.class, new Date());
    }
}

    @Test
    public void testLogicDelete() {
        // 插入一个新的用户
        UserEntity newUser = new UserEntity();
        newUser.setId(11L);
        newUser.setName("Kevin");
        newUser.setAge(25);
        newUser.setEmail("kevin@163.com");
        userMapper.insert(newUser);
    }

    @Test
    public void testLogicDelete() {
        // 插入一个新的用户
//        UserEntity newUser = new UserEntity();
//        newUser.setId(11L);
//        newUser.setName("Kevin");
//        newUser.setAge(25);
//        newUser.setEmail("kevin@163.com");
//        userMapper.insert(newUser);

        // 逻辑删除
        userMapper.deleteById(11L);
    }