SpringBoot项目当中createTime和updateTime自动插入

向右看齐 2023-10-02 10:17 10阅读 0赞

1.实体当中添加

package com.example.morningrundata.entity;
    
    import com.baomidou.mybatisplus.annotation.FieldFill;
    import com.baomidou.mybatisplus.annotation.TableField;
    import com.baomidou.mybatisplus.annotation.TableId;
    import lombok.Data;
    
    import java.time.LocalDateTime;
    
    import static com.baomidou.mybatisplus.annotation.IdType.AUTO;
    
    @Data
    public class BaseEntity {
    
        @TableId(type = AUTO)
        private Long id;
    
        @TableField(fill = FieldFill.INSERT)
        private LocalDateTime createTime;
    
        @TableField(fill = FieldFill.INSERT_UPDATE)
        private LocalDateTime updateTime;
    }

2.添加handler

package com.example.morningrundata.result.handler;
    
    import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
    import lombok.extern.slf4j.Slf4j;
    import org.apache.ibatis.reflection.MetaObject;
    import org.springframework.stereotype.Component;
    
    import java.time.LocalDateTime;
    
    /**
     * @author
     * createTime,updateTime 自动填充
     */
    @Slf4j
    @Component
    public class MyMetaObjectHandler implements MetaObjectHandler {
    
        @Override
        public void insertFill(MetaObject metaObject) {
            log.info("start insert fill ....");
            this.strictInsertFill(metaObject, "createTime", LocalDateTime.class, LocalDateTime.now());
            this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());
    
        }
    
        @Override
        public void updateFill(MetaObject metaObject) {
            log.info("start update fill ....");
            this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());
        }
    }