在Maven项目集成Mybatis增删改查操作(一)的基础上，对用户进行批量增、删、改操作
1、实体类 TdyMemberInfo.class
package com.sc.pojo;
import java.math.BigDecimal;
import java.util.Date;
public class TdyMemberInfo {
private Long id;
private Long shopId;
private String memberNo;
private String mobile;
private String openId;
private int startIndex;
private int pageSize;
@Override
public String toString() {
return "TdyMemberInfo{" +
"id=" + id +
", shopId=" + shopId +
", memberNo='" + memberNo + '\'' +
", mobile='" + mobile + '\'' +
", openId='" + openId + '\'' +
'}';
}
public Long getShopId() {
return shopId;
}
public int getStartIndex() {
return startIndex;
}
public void setStartIndex(int startIndex) {
this.startIndex = startIndex;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public void setShopId(Long shopId) {
this.shopId = shopId;
}
public void setMemberNo(String memberNo) {
this.memberNo = memberNo;
}
public void setMobile(String mobile) {
this.mobile = mobile;
}
public void setMixMobile(String mixMobile) {
this.mixMobile = mixMobile;
}
public void setOpenId(String openId) {
this.openId = openId;
}
public String getMemberNo() {
return memberNo;
}
public String getMobile() {
return mobile;
}
public String getOpenId() {
return openId;
}
public TdyMemberInfo() {
}
public TdyMemberInfo(Long id, Long shopId,String memberNo, String mobile, String openId) {
this.id = id;
this.shopId = shopId;
this.memberNo = memberNo;
this.mobile = mobile;
this.openId = openId;
}
}
上述实例类TdyMemberInfo 中定义的变量 id 对应表t_dy_member_info中的member_id，在TdyMemberInfoMapper.xml的resultMap 中会有对应的映射关系。
startIndex、pageSize 这两个字段用于分页查询。
2、TdyMemberInfoDao.class
package com.sc.dao;
import com.sc.pojo.TdyMemberInfo;
import java.util.List;
import java.util.Map;
public interface TdyMemberInfoDao {
List selectAllmember();
/**
* 根据手机号模糊查 询
* @param value
* @return
*/
List selectLikeMember(String value);
/**
* 分页查询
* @param tdyMemberInfo
* @return
*/
List selectMemberList(TdyMemberInfo tdyMemberInfo);
/**
* 通过会员ID查询会员
* @param memberId
* @return
*/
TdyMemberInfo selectMemberById(String memberId);
/**
* 使用会员对象传参 新增单个会员
* @param tdyMemberInfo
* @return
*/
int addMember(TdyMemberInfo tdyMemberInfo);
/**
* 使用map传参 新增会员
* @param map
* @return
*/
int addMemberByMap(Mapmap);
/**
* 批量增加会员
* @param list
* @return
*/
int addMemberBatch(List list);
/**
* 修改单个会员
* @param tdyMemberInfo
* @return
*/
int updateMember(TdyMemberInfo tdyMemberInfo);
/**
* 批量修改会员 使用 replace into
* @param list
* @return
*/
int updateMemberBatch1(List list);
/**
* 批量修改会员 使用 insert into
* @param list
* @return
*/
int updateMemberBatch2(List list);
/**
* 删除单个会员
* @param memberId
* @return
*/
int deleteMember(long memberId);
/**
* 删除多个会员
* @param ids
* @return
*/
int deleteMemberBatch(long[] ids);
}
3、TdyMemberInfoMapper.xml
select member_no,mobile,open_id from t_dy_member_info
INSERT INTO t_dy_member_info
(shop_id,member_code,member_no,mobile,mix_mobile,open_id,`level`,bind_status,bind_status_time,`point`,point_time,create_time,last_modify_time)
VALUES (9730231,NULL,#{memberNo},#{mobile},NULL,#{openId},1,1,NULL,0,NULL,NULL,NULL)
INSERT INTO t_dy_member_info
(shop_id,member_code,member_no,mobile,mix_mobile,open_id,`level`,bind_status,bind_status_time,`point`,point_time,create_time,last_modify_time)
VALUES (9730231,NULL,#{no},#{mobile},NULL,#{open},1,1,NULL,0,NULL,NULL,NULL)
INSERT INTO t_dy_member_info
(shop_id,member_code,member_no,mobile,mix_mobile,open_id,`level`,bind_status,bind_status_time,`point`,point_time,create_time,last_modify_time)
VALUES
(9730231,NULL,#{TdyMemberInfo.memberNo},#{TdyMemberInfo.mobile},NULL,#{TdyMemberInfo.openId},1,1,NULL,0,NULL,NULL,NULL)
update t_dy_member_info set open_id=#{openId} ,member_no=#{memberNo} where member_id =#{id}
replace into t_dy_member_info
(member_id,member_no,mobile,open_id)
values
(#{TdyMemberInfo.id},#{TdyMemberInfo.memberNo},#{TdyMemberInfo.mobile},#{TdyMemberInfo.openId})
INSERT INTO t_dy_member_info
(member_id,member_no,mobile,open_id)
VALUES
(#{TdyMemberInfo.id},#{TdyMemberInfo.memberNo},#{TdyMemberInfo.mobile},#{TdyMemberInfo.openId})
on duplicate key update
member_no = values(member_no),mobile=values(mobile),open_id=values(open_id)
delete from t_dy_member_info where member_id=#{id}
delete from t_dy_member_info where member_id in
#{id}
上述xml文件中，selectMemberList分页查询时，用到 include 标签引用，这里使用属性refid="selectAll"，引用的是查询所有用户的方法selectAll。如果 refid 指定的方法不在本文件中，那么需要在前面加上 namespace。
列表分页查询：
上述SQL中：
parameterType 这里使用的是配置文件中取的别名，对应实体类。
resultMap 这里使用的是前面定义的 resultMap。
如果用 resultType ，则需要指定具体的类或者 MyBatis 默认的基本数据类型。
MyBatis 默认的基本数据类型有：int、string、long、map。
{} 用于传递参数。
批量增加、修改、删除用到foreach标签，该标签中的属性：
collection：指定输入对象中的集合属性。
item：每次遍历生成的对象。
open：开始遍历时的拼接字符串。
close：结束时拼接的字符串。
separator：遍历对象之间需要拼接的字符串。
updateMemberBatch1，批量更新的SQL块中，用到replace into。它跟 insert 功能类似。
不同点在于：replace into 首先尝试插入数据到表中，如果发现表中已经有此行数据（根据主键或者唯一索引判断）则先删除此行数据，然后插入新的数据。 否则直接插入新数据。
replace into t_dy_member_info
(member_id,member_no,mobile,open_id)
values
(#{TdyMemberInfo.id},#{TdyMemberInfo.memberNo},#{TdyMemberInfo.mobile},#{TdyMemberInfo.openId})
这里需要注意：
1）插入数据的表中必须有主键或者是唯一索引！否则，replace into 会直接插入数据，这将导致表中出现重复的数据。
2）replace into 表名 (列名) values (列值)，中列名一定要包含主键，否则就会insert。列值需要使用item中的对象获取对应的值，例如：TdyMemberInfo.id。
updateMemberBatch2，批量更新的SQL块中，用到 on duplicate key update
INSERT INTO t_dy_member_info
(member_id,member_no,mobile,open_id)
VALUES
(#{TdyMemberInfo.id},#{TdyMemberInfo.memberNo},#{TdyMemberInfo.mobile},#{TdyMemberInfo.openId})
on duplicate key update
member_no = values(member_no),mobile=values(mobile),open_id=values(open_id)
on duplicate key update是MySQL特有语法；
该语句是基于主键（PRIMARY KEY）或唯一索引（UNIQUE INDEX）使用的。
如果已存在该唯一标示或主键就更新，如果不存在该唯一标示或主键则作为新行插入。
该语句的后面可以放多个字段，用英文逗号分割。
4、测试类，MemberDaoTest.class
package dao;
import com.sc.config.MyBatisUtils;
import com.sc.dao.TdyMemberInfoDao;
import com.sc.pojo.TdyMemberInfo;
import org.apache.ibatis.session.SqlSession;
import org.junit.Test;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MemberDaoTest {
@Test
public void selectAll(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
List allMembers = mapper.selectAllmember();
for(TdyMemberInfo member:allMembers){
System.out.println(member);
}
sqlSession.close();
}
@Test
public void selectMemberList(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
TdyMemberInfo tdyMemberInfo = new TdyMemberInfo();
int pageNum =2;
int pageSize =3;
tdyMemberInfo.setStartIndex((pageNum - 1) * pageSize);
tdyMemberInfo.setPageSize(pageSize);
tdyMemberInfo.setMemberNo("202111%");
tdyMemberInfo.setMobile("185%");
List allMembers = mapper.selectMemberList(tdyMemberInfo);
for(TdyMemberInfo member:allMembers){
System.out.println(member);
}
sqlSession.close();
}
@Test
public void selectMemberById(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
TdyMemberInfo tdyMemberInfo = mapper.selectMemberById("481");
System.out.println(tdyMemberInfo);
sqlSession.close();
}
@Test
public void selectLikeMember(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
List tdyMemberInfos = mapper.selectLikeMember("18660467%");
for (TdyMemberInfo tdyMemberInfo : tdyMemberInfos) {
System.out.println(tdyMemberInfo);
}
sqlSession.close();
}
@Test
public void addMember(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
TdyMemberInfo tdyMemberInfo = new TdyMemberInfo();
tdyMemberInfo.setMemberNo("202112091000011");
tdyMemberInfo.setMobile("18660467745");
tdyMemberInfo.setOpenId("PDH2JKKE3JUKAG6M7VOX14");
int code = mapper.addMember(tdyMemberInfo);
if(code>0){
System.out.println("新增员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
/**
* 批量插入
*/
@Test
public void addMemberBatch(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
TdyMemberInfo tdyMemberInfo = new TdyMemberInfo();
tdyMemberInfo.setMemberNo("202112091000011");
tdyMemberInfo.setMobile("18660467745");
tdyMemberInfo.setOpenId("PDH2JKKE3JUKAG6M7VOX14");
TdyMemberInfo tdyMemberInfo2 = new TdyMemberInfo();
tdyMemberInfo2.setMemberNo("202112091000012");
tdyMemberInfo2.setMobile("18660467749");
tdyMemberInfo2.setOpenId("PDH2JKKE3JUKAG6M7VOX149");
List list = new ArrayList<>();
list.add(tdyMemberInfo);
list.add(tdyMemberInfo2);
int code = mapper.addMemberBatch(list);
if(code>0){
System.out.println("批量新增员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
@Test
public void addMemberByMap(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
Map map = new HashMap<>();
map.put("no","20211209100002");
map.put("mobile","18660467799");
map.put("open","111PDH2JKKE3JUKAG111");
int code = mapper.addMemberByMap(map);
if(code>0){
System.out.println("使用Map传参，新增员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
@Test
public void updateMember(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
TdyMemberInfo tdyMemberInfo = new TdyMemberInfo();
tdyMemberInfo.setId(new Long(481));
tdyMemberInfo.setMemberNo("20211209100001111");
tdyMemberInfo.setOpenId("PDH2JKKE3JUKAG6M7VOX4555");
int code = mapper.updateMember(tdyMemberInfo);
if(code>0){
System.out.println("修改员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
/**
* 批量修改会员信息
* replace into 首先尝试插入数据到表中，
* 1. 如果发现表中已经有此行数据（根据主键或者唯一索引判断）则先删除此行数据，然后插入新的数据。
* 2. 否则，直接插入新数据
*/
@Test
public void updateMemberBatch1(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
TdyMemberInfo tdyMemberInfo = new TdyMemberInfo();
tdyMemberInfo.setId(new Long(484));
tdyMemberInfo.setMemberNo("202112091000011484");
tdyMemberInfo.setMobile("18660467747");
tdyMemberInfo.setOpenId("PDH2JKKE3JUKAG6M7VOX14");
TdyMemberInfo tdyMemberInfo2 = new TdyMemberInfo();
tdyMemberInfo2.setId(new Long(485));
tdyMemberInfo2.setMemberNo("202112091000012485");
tdyMemberInfo2.setMobile("18660467740");
tdyMemberInfo2.setOpenId("PDH2JKKE3JUKAG6M7VOX149");
List list = new ArrayList<>();
list.add(tdyMemberInfo);
list.add(tdyMemberInfo2);
int code = mapper.updateMemberBatch1(list);
if(code>0){
System.out.println("批量修改员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
/**
* 批量修改会员2
*/
@Test
public void updateMemberBatch2(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
TdyMemberInfo tdyMemberInfo = new TdyMemberInfo();
tdyMemberInfo.setId(new Long(484));
tdyMemberInfo.setMemberNo("202112091001111");
tdyMemberInfo.setMobile("18660467777");
tdyMemberInfo.setOpenId("PDH2JKKE3JUKAG6M71111");
TdyMemberInfo tdyMemberInfo2 = new TdyMemberInfo();
tdyMemberInfo2.setId(new Long(485));
tdyMemberInfo2.setMemberNo("202112091001112");
tdyMemberInfo2.setMobile("18660467776");
tdyMemberInfo2.setOpenId("PDH2JKKE3JUKAG6M72222");
List list = new ArrayList<>();
list.add(tdyMemberInfo);
list.add(tdyMemberInfo2);
int code = mapper.updateMemberBatch2(list);
if(code>0){
System.out.println("批量修改员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
/**
* 删除单个会员
*/
@Test
public void deleteMember(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
int code = mapper.deleteMember(new Long(481));
if(code>0){
System.out.println("删除员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
/**
* 批量删除会员
*/
@Test
public void deleteMemberBatch(){
SqlSession sqlSession = MyBatisUtils.getSqlSession();
TdyMemberInfoDao mapper = sqlSession.getMapper(TdyMemberInfoDao.class);
long[] ids = {484,485};
int code = mapper.deleteMemberBatch(ids);
if(code>0){
System.out.println("批量删除员工成功。");
}
sqlSession.commit();
sqlSession.close();
}
}