随着业务需要，有时我们需要将数据批量添加到数据库，mybatis提供了将list集合循环添加到数据库的方法。具体实现代码如下:
mapper/serverice层中创建insertForeach 接口方法,返回值是批量添加的数据条数 |
package com.center.manager.mapper; import java.util.List; import org.apache.ibatis.annotations.Mapper; import com.center.manager.entity.Fund; @Mapper public interface FundMapper { int insertForeach(List<Fund> list); }
Fund类代码如下:
package com.center.manager.entity; import java.util.Date; @Lomok public class Fund { private String id; private String fundName; private String fundCode; private String dateX; private String dataY; private String remarks; private String createBy; private Date createDate; private String updateBy; private Date updateDate; private String delFlag; }
mybatis的xml文件中的insert语句如下:
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="com.center.manager.mapper.FundMapper"> <insert id="insertForeach" parameterType="java.util.List" useGeneratedKeys="false"> insert into fund ( id,fund_name,fund_code,date_x,data_y,create_by,create_date,update_by,update_date,remarks,del_flag) values <foreach collection="list" item="item" index="index" separator=","> ( #{item.id}, #{item.fundName}, #{item.fundCode}, #{item.dateX}, #{item.dataY}, #{item.createBy}, #{item.createDate}, #{item.updateBy}, #{item.updateDate}, #{item.remarks}, #{item.delFlag} ) </foreach> </insert> </mapper>
