网络服务顺序seo关键词排名优化怎么样

注意 item.的方式获取循环中的对象属性

注意 item.的方式获取循环中的对象属性

注意 item.的方式获取循环中的对象属性

---------------------------------------------

 

首先要在数据库连接配置中设置允许批量操作(连接数据源参数配置中新增 allowMultiQueries=true)

spring:profiles: devdatasource:name: testDatabaseurl: jdbc:mysql://localhost:3306/testTable?allowMultiQueries=true

---------------
1.批量插入
Mapper 函数

Integer insertMergeRequests(List<MergeRequest> mergeRequests);

-----

mybatis xml

<insert id="insertMergeRequests" parameterType="java.util.List" useGeneratedKeys="true" keyProperty="requestId"> insert into user_merge_request (merge_uid, uid, create_time, update_time) values <foreach collection="list" item="item" index="index" separator=","> (#{item.mergeUid,jdbcType=BIGINT},#{item.uid,jdbcType=BIGINT},#{item.createTime,jdbcType=TIMESTAMP},#{item.updateTime,jdbcType=TIMESTAMP}) </foreach> </insert>

2.批量更新

Mapper函数

int updateTeamMembers(@Param("teamMembers") List<TeamMember> teamMembers);

----

mybatis xml

<update id="updateTeamMembers" parameterType="java.util.List"><foreach collection="teamMembers" item="item" index="index" open="" close="" separator=";">update lop_team_member <set><if test="item.memberType != null">member_type=#{item.memberType},</if><if test="item.status != null">status = #{item.status}</if> </set> where uid = #{item.uid} and team_id = #{item.teamId}</foreach></update>