mybatis 批量新增批量修改

使用hutool分割list

import cn.hutool.core.collection.CollUtil;public ReturnT<Integer> batchInsert() {List<SysUserDTO> list = new ArrayList<>();for (int i = 0; i < 100; i++) {SysUserDTO sysUserDTO = new SysUserDTO();sysUserDTO.setUsername("admin" + i);sysUserDTO.setPassword("12345" + i);sysUserDTO.setUserAccount("admin" + i);sysUserDTO.setEmail("admin" + i + "@163.com");sysUserDTO.setCreateBy("admin");list.add(sysUserDTO);}int size = 100;int total = 0;List<List<SysUserDTO>> lists = CollUtil.splitList(list, size);for (List<SysUserDTO> sysUserDTOS : lists) {int rows = baseMapper.insertBatch(sysUserDTOS);total += rows;}return new ReturnT<>(total);}public ReturnT<Integer> updateBatch() {List<SysUserDTO> list = new ArrayList<>();for (int i = 0; i < 100; i++) {SysUserDTO sysUserDTO = new SysUserDTO();sysUserDTO.setUsername("admin200" + i);sysUserDTO.setPassword("12345" + i);sysUserDTO.setUserAccount("admin" + i);sysUserDTO.setEmail("admin" + i + "@163.com");sysUserDTO.setCreateBy("admin");list.add(sysUserDTO);}int size = 100;int total = 0;List<List<SysUserDTO>> lists = CollUtil.splitList(list, size);for (List<SysUserDTO> sysUserDTOS : lists) {int rows = baseMapper.updateBatch(sysUserDTOS);total += rows;}return new ReturnT<>(total);}

List<List<SysUserDTO>> lists = CollUtil.splitList(list, size);

1. 批量新增

<insert id="insertBatch">INSERT INTO `sys_user`(`username`, `password`, `user_account`, `email`, `salt`, `phone`, `create_time`,`create_by`)VALUES<foreach collection="list" item="sysUser" separator=",">(#{sysUser.username}, #{sysUser.password}, #{sysUser.userAccount},#{sysUser.email},#{sysUser.salt},#{sysUser.phone},now(),#{sysUser.createBy})</foreach></insert>

2. 批量更新

需要建唯一索引

<insert id="updateBatch">INSERT INTO `sys_user`(`username`, `password`, `user_account`, `email`, `salt`, `phone`, `create_time`,`create_by`)VALUES<foreach collection="list" item="sysUser" separator=",">(#{sysUser.username}, #{sysUser.password}, #{sysUser.userAccount},#{sysUser.email},#{sysUser.salt},#{sysUser.phone},now(),#{sysUser.createBy})</foreach>ON DUPLICATE KEY UPDATEid=VALUES(id),username = VALUES(username),password = VALUES(password),user_account = VALUES(user_account),email = VALUES(email),salt = VALUES(salt),phone = VALUES(phone),create_time = VALUES(create_time),create_by = VALUES(create_by)</insert>

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