Mybatis 批量增加insert

方法一：foreach

容易出現的錯誤：出現SQL語句錯誤

解決方式： 在數據庫的連接url后添加allowMultiQueries=true(允許批量更新)

jdbc.url=jdbc:mysql://localhost:3306/mybatis?allowMultiQueries=true

例子：

xml文件

<?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)

                <foreach collection="list" item="item" index="index" separator=",">
　　　　　　　　　　values
                    (
                        #{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>

mapper層

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);
    }

Fun類

package com.center.manager.entity;
import java.util.Date;
        @data
    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; 
    }

方法二：

Mybatis內置的ExecutorType有3種，默認的是simple，該模式下它為每個語句的執行創建一個新的預處理語句，單條提交sql；而batch模式重復使用已經預處理的語句，

並且批量執行所有更新語句，顯然batch性能將更優；

service層

@Autowired
private SqlSessionTemplate sqlSessionTemplate;

public void add(List<ApplyInfo> list) {
       SqlSession sessionn = sqlSessionTemplate.getSqlSessionFactory().openSession(ExecutorType.BATCH,false);
       AddInfoDap mapper = session.getMapper(AddInfo.class);
       for(int i = 0; i < list.seize ; i++) {
              mapper.addApplicationDetail(lisr.get(i));
                     if(i == list.size()-1) {
                            session.commit();
                     session.close();
                     }   
       }
}             

xml層

<?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="addApplicationDetail" parameterType="com.dao.entity.ApplyInfo" >
                insert into fund
                ( id,fund_name,fund_code,date_x,data_y,create_by,create_date,update_by,update_date,remarks,del_flag)
　　　　　　　　　　values
                    (
                        #{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>

 

mapper層

 

 

void addApplicationDetail(ApplyInfo infos)