Mybatis的公共字段插入的实现，具体内容如下所示：

公共的基础类

package com.yss.common.domain;import com.baomidou.mybatisplus.annotation.FieldFill;import com.baomidou.mybatisplus.annotation.IdType;import com.baomidou.mybatisplus.annotation.TableField;import com.baomidou.mybatisplus.annotation.TableId;import com.baomidou.mybatisplus.extension.activerecord.Model;import lombok.Data;import java.util.Date;/** * @author wyy * @version 1.0 * @date 2020/11/5 13:23 */@Datapublic abstract class BasicEntity <T extends Model<?>> extends Model<T> { @TableId(value = "ID",type = IdType.ASSIGN_ID) private String id; @TableField(value = "CREATOR_ID",fill = FieldFill.INSERT ) private String creatorId; @TableField(value = "CREATOR",fill = FieldFill.INSERT) private String creator; @TableField(value = "CREATETIME",fill = FieldFill.INSERT) private Date createTime; @TableField(value = "MODIFY_ID",fill = FieldFill.UPDATE) private String modifyId; @TableField(value = "MODIFY_BY",fill = FieldFill.UPDATE) private String modifyBy; @TableField(value = "MODIFYTIME",fill = FieldFill.UPDATE) private Date modifyTime; @TableField("DELETED") private int deleted;}

该类定义了主要基于泛型，以及公共插入（createor/creatorid）与更新的字段（modifyid/modifyby）。
新增注解：@TableField(value = “CREATETIME”,fill = FieldFill.INSERT)
更新注解：@TableField(value = “MODIFY_BY”,fill = FieldFill.UPDATE)

MybatisPlus对公共字段的配置

package com.yss.common.utils;import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;import com.yss.common.domain.SSOUserInfo;import org.apache.ibatis.reflection.MetaObject;import org.springframework.stereotype.Component;import java.util.Date;/** * @author wyy * @version 1.0 * @date 2020/11/5 13:30 */@Componentpublic class MybatisAuditHandler implements MetaObjectHandler { @Override public void insertFill(MetaObject metaObject) { SSOUserInfo ssoUserInfo = UserInfoUtils.getThreadUserInfo(); this.strictInsertFill(metaObject,"creatorId",String.class, ssoUserInfo.getId()); this.strictInsertFill(metaObject,"creator", String.class,ssoUserInfo.getUserPrincipalName()); this.strictInsertFill(metaObject,"createTime", Date.class,new Date()); } @Override public void updateFill(MetaObject metaObject) { SSOUserInfo ssoUserInfo = UserInfoUtils.getThreadUserInfo(); this.strictInsertFill(metaObject,"modifyId",String.class, ssoUserInfo.getId()); this.strictInsertFill(metaObject,"modifyBy", String.class,ssoUserInfo.getUserPrincipalName()); this.strictInsertFill(metaObject,"modifyTime", Date.class,new Date()); }}

需要注意的是采用@component注解，告知spring容器是一个bean等。这样的话就实现了mybatisplus的公共自断的新增与更改。
要注意的是，在进行handler方法重写时，
this.strictInsertFill(metaObject,“creator”, String.class,ssoUserInfo.getUserPrincipalName());
这是自的是实体类的字段，并不是数据库对应字段。

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