Mybatis批量更新传map参数，设置允许批量执行sql

╰半橙微兮° 2022-03-16 03:20 555阅读 0赞

多条数据更新操作场景还是非常多的，每次碰到类似问题还是需要稍微百度一下复制，

so，与其每次看别人博客不如自己也记录一下，方便以后回忆并使用也方便了大家；

不过需要批量，**记得一定检查一下是否有配置允许批量更新，如果已设置请忽略；**

### &allowMultiQueries=true 允许批量更新 ###

spring.datasource.jdbc-url=jdbc:mysql://xx.xx.xx.xx:3306/数据库名?useUnicode=true&characterEncoding=utf8&useSSL=false&allowMultiQueries=true

** ****Service、****mapper接口：**

public int updateCheckStatusByProjectIds( Map<String,Object> param);

**mapper.xml ：**

<update id="updateCheckStatusByPersonIds"  parameterType="java.util.Map">
        
        <foreach collection="paramMap" separator=";" item="params">
          update person_info set
          check_people = #{params.checkPeople},
          check_status = #{params.checkStatus},
          check_date = #{params.checkDate}
          where person_id = #{params.personId}
        </foreach>
      </update>

**Serviceimpl实现类：**

public int updateCheckStatusByProjectIds(HttpServletRequest request, String projectId, String status){
            if ("success".equals(status)){
                status = Constant.SUCCESS_STATE;
            }else{
                status = Constant.REJECT_STATE;
            }
            Map<String,Object> map = new HashMap<String,Object>();
            String[] arr  = projectId.split(",");
            User user = SessionUtils.getUser(request);
            List<ProjectInfo> list = new ArrayList<ProjectInfo>();
            for(int i=0;i<arr.length;i++){
                ProjectInfo personInfo = new ProjectInfo();
                personInfo.setCheckPeople(user.getId());
                personInfo.setCheckStatus(status);
                personInfo.setCheckDate(new Date());
                personInfo.setProjectId(Integer.parseInt(arr[i]));
                list.add(personInfo);
            }
            map.put("paramMap",list);
            return projectInfoMapper.updateCheckStatusByProjectIds(map);
        }

有问题还请留言，大神多多指教！