} Mapper XML 文件: <mappernamespace="com.example.mapper.UserMapper"><insertid="batchInsert"parameterType="java.util.List">INSERT INTO user (username, email) VALUES<foreachcollection="list"item="user"separator=",">(#{user.username}, #{user.email})</foreach></insert></mapper> 使用: 当你...
intinsertNum=100;Connectionconnection=DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/xxx?useUnicode=true&characterEncoding=UTF-8&useServerPrepStmts=false&rewriteBatchedStatements=true","root","root123");connection.setAutoCommit(false);PreparedStatementps=connection.prepareStatement("insert into tab...
public interface UserMapper { void batchInsert(List<User> userList); } 1. 2. 3. Mapper XML 文件: <mapper namespace="com.example.mapper.UserMapper"> <insert id="batchInsert" parameterType="java.util.List"> INSERT INTO user (username, email) VALUES <foreach collection="list" item="user"...
<insert id="insert" parameterType="com.example.model.Item"> INSERT INTO table_name (column1, column2) VALUES (#{column1}, #{column2}) </insert> <!-- 批量插入记录的映射 --> <insert id="batchInsertWithUnionAll" parameterType="java.util.List"> INSERT INTO table_name (column1, column2...
*/@RequestMapping("/mysavebatch")publicbooleanmySaveBatch(){List<User>list=newArrayList<>();// 待添加(用户)数据for(int i=0;i<1000;i++){User user=newUser();user.setName("test:"+i);user.setPassword("123456");list.add(user);}returnuserService.saveBatchCustom(list);}} ...
<mapper namespace="com.example.demo.mapper.UserMapper"> <insert id="saveBatchByNative"> INSERT INTO `USER`(`NAME`,`PASSWORD`) VALUES <foreach collection="list" separator="," item="item"> (#{item.name},#{item.password}) </foreach> ...
原生批量插入方法是依靠 MyBatis 中的 foreach 标签,将数据拼接成一条原生的 insert 语句一次性执行的,核心实现代码如下。 ① 业务逻辑层扩展 在UserServiceImpl 添加 saveBatchByNative 方法,实现代码如下: importcom.baomidou.mybatisplus.extension.service.impl.ServiceImpl;importcom.example.demo.mapper.UserMapper...
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mappernamespace="com.example.demo.mapper.UserMapper"><insertid="saveBatchByNative">INSERT INTO `USER`(`NAME`,`PASSWORD`) VALUES<foreachcollection="list"separator=","item="item"...
<!--MySQL下批量保存,可以foreach遍历mysql支持values(),(),()语法-->//推荐使用<insert id="addEmpsBatch">INSERTINTOemp(ename,gender,email,did)VALUES<foreach collection="emps"item="emp"separator=",">(#{emp.eName},#{emp.gender},#{emp.email},#{emp.dept.id})</foreach></insert> ...
原生批量插入方法是依靠 MyBatis 中的 foreach标签,将数据拼接成一条原生的 insert 语句一次性执行的,核心实现代码如下。 ① 业务逻辑层扩展 在UserServiceImpl 添加 saveBatchByNative 方法,实现代码如下: importcom.baomidou.mybatisplus.extension.service.impl.ServiceImpl;importcom.example.demo.mapper.UserMapper;...