mybatis bulk insert and modify batch

1. Background 

   More and more bulk insert and modify batch used in the project scenario, bulk operations to achieve more and more plug-ins.

 Personal learned roughly three ways:

Plugin name	Bulk Insert	Batch Edit
mybatis	√	√
General mapper	√	×
mybatis  plus	√	√

 

 

 

 

 

2. mybatils bulk insert and modify

2.1 pom.xml

		<dependency>
	  	   	 <groupId>org.mybatis</groupId>
	  	     <artifactId>mybatis</artifactId>
	  		 <version>3.4.4</version>
	  	</dependency>
	  	<dependency>
	  		<groupId>org.mybatis</groupId>
	  	  	<artifactId>mybatis-spring</artifactId>
	  		<version>1.3.1</version>
	  	</dependency>

About configuration is explained, however, to see history blog to see how mybatils configuration. 

2.2 dao class

package com.cloudtech.web.dao;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.apache.ibatis.annotations.Param;

import com.cloudtech.web.entity.StationTiming;
import com.cloudtech.web.vo.StationTimingVo;

import tk.mybatis.mapper.common.Mapper;

public interface StationTimingMapper extends Mapper<StationTiming> {

	/**
	 * 批量插入
	 * 
	 * @param insertLsit
	 */
	void batchInsert(@Param("list") ArrayList<StationTiming> list);

	/**
	 * 批量修改
	 * 
	 * @param updateList
	 */
	void batchUpdate(@Param("list") List<StationTiming> list);
}

Causes extends Mapper <StationTiming> is used mapper general, but not universal mapper bulk edit operation, therefore, MyBatis bulk insert and use a modified manner.

2.2 mapper class

<?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.cloudtech.web.dao.StationTimingMapper">
		<!-- 批量插入站点校时信息 -->
	<insert id="batchInsert" parameterType="java.util.List">
    			insert into station_timing
    			(station_id,send_time,status,create_time)
    			values
    			<foreach collection="list" item="item" index="index" separator=",">
    				(	
    					#{item.stationId},
    					#{item.sendTime},
    					#{item.status},
    					now()
    				)
    		     </foreach>		
    </insert> 
	

	 <update id="batchUpdate" parameterType="java.util.List">
            update station_timing
            <trim prefix="set" suffixOverrides=",">
              <trim prefix="send_time=case" suffix="end,">
                 <foreach collection="list" item="item" index="index">
                         <if test="item.sendTime!=null">
                          when id=#{item.id} then #{item.sendTime}
                         </if>
                 </foreach>
              </trim>
              <trim prefix="status =case" suffix="end,">
                 <foreach collection="list" item="item" index="index">
                         <if test="item.status!=null">
                          when id=#{item.id} then #{item.status}
                         </if>
                 </foreach>
              </trim>
             </trim>
            where
            <foreach collection="list" separator="or" item="item" index="index">
              id=#{item.id}
          </foreach>
	</update>
</mapper>

foreach tag description

Attributes	description
collection	That the iteration is the name of a collection, you can use annotations to specify @Param, remember mass participation dao class must increase @Param Mandatory
item	Elements required output, such as for the List, was the object required
index	Day iteration modify the index position, optional
separator	Iteration requires additional content, optional
open	Iteration begins with what sql
close	Sql iteration to what end

2.3 Entity Class

package com.cloudtech.web.entity;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Transient;

public class StationTiming implements Serializable {

	private static final long serialVersionUID = 1L;
	@Id
	@Column
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private Integer id;

	private Integer stationId;
	@Transient
	private String number;

	private Date responseTime;

	private String replyContent;

	private Integer status;

	private Date createTime;

	private Date sendTime;

	public Date getSendTime() {
		return sendTime;
	}

	public void setSendTime(Date sendTime) {
		this.sendTime = sendTime;
	}

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public Integer getStationId() {
		return stationId;
	}

	public void setStationId(Integer stationId) {
		this.stationId = stationId;
	}

	public String getNumber() {
		return number;
	}

	public void setNumber(String number) {
		this.number = number;
	}

	public Date getResponseTime() {
		return responseTime;
	}

	public void setResponseTime(Date responseTime) {
		this.responseTime = responseTime;
	}

	public String getReplyContent() {
		return replyContent;
	}

	public void setReplyContent(String replyContent) {
		this.replyContent = replyContent;
	}

	public Integer getStatus() {
		return status;
	}

	public void setStatus(Integer status) {
		this.status = status;
	}

	public Date getCreateTime() {
		return createTime;
	}

	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}

}

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