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:
1、mapper层中创建 insertForeach(List < Fund > list) 方法,返回值是批量添加的数据条数
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package com.center.manager.mapper;import java.util.List;import org.apache.ibatis.annotations.Mapper;import com.center.manager.entity.Fund;@Mapperpublic interface FundMapper {int insertForeach(List<Fund> list);} |
Fund类代码如下:
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package com.center.manager.entity;import java.util.Date;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; public String getId() {return id;}public void setId(String id) {this.id = id;}public String getFundName() {return fundName;}public void setFundName(String fundName) {this.fundName = fundName;}public String getFundCode() {return fundCode;}public void setFundCode(String fundCode) {this.fundCode = fundCode;}public String getDateX() {return dateX;}public void setDateX(String dateX) {this.dateX = dateX;}public String getDataY() {return dataY;}public void setDataY(String dataY) {this.dataY = dataY;} public String getRemarks() {return remarks;}public void setRemarks(String remarks) {this.remarks = remarks;}public String getCreateBy() {return createBy;}public void setCreateBy(String createBy) {this.createBy = createBy;}public Date getCreateDate() {return createDate;}public void setCreateDate(Date createDate) {this.createDate = createDate;}public String getUpdateBy() {return updateBy;}public void setUpdateBy(String updateBy) {this.updateBy = updateBy;}public Date getUpdateDate() {return updateDate;}public void setUpdateDate(Date updateDate) {this.updateDate = updateDate;}public String getDelFlag() {return delFlag;}public void setDelFlag(String delFlag) {this.delFlag = delFlag;}} |
2、mybatis的xml文件中的insert语句如下:
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<?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> |
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原文链接：https://blog.csdn.net/wsjzzcbq/article/details/81779588
