MyBatis如何进行双重foreach循环

目录

• 进行双重foreach循环
• 使用场景
• mybatis foreach循环,传入多个参数
• 上代码

进行双重foreach循环

mapname是一个Map> 对象

    
        #{key1},
        #{key2},
        #{value2}
    

使用场景

比如说一个付款人下面对应的运单的金额，那么key1就是付款人编号，key2是运单编号，value2是分摊的金额 

mybatis foreach循环,传入多个参数

上代码

controller：

@RequestMapping(value = "/findPage", method = RequestMethod.POST)
    @ResponseBody
    public Object findPage(@RequestParam(required=false) String jobCategory,@RequestParam(required=false) String ids,@RequestParam(required=false) String cities) {
        try {
            List listJob = new ArrayList();
            List listIds = new ArrayList();
            List listCities = new ArrayList();
            //按照城市名称和工种查询
            if(StringUtils.isNotBlank(jobCategory) && StringUtils.isNotBlank(cities)){
                String[] temp = jobCategory.split(",");
                String[] cityTemp = cities.split(",");
                for(int i=0;i list = jobService.findPage(listJob, listIds, listCities);
                return new ExtGridReturn(list.size(), list);
            }
            //按照工种查询
            if(StringUtils.isNotBlank(jobCategory)){
                String[] temp = jobCategory.split(",");
                for(int i=0;i list = jobService.findPage(listJob, listIds, listCities);
            return new ExtGridReturn(list.size(), list);
        } catch (Exception e) {
            LOGGER.error("分页获取信息出错", e);
            return new ExceptionReturn(e);
        }
    }

mapper

/**
     * 描述：根据工种查询列表
     * @param jobCategorys
     * @return
     */
    List findPage(@Param("jobCategorys") List jobCategorys,@Param("ids") List ids,@Param("workPlace") List workPlace);

xml

   
           select n.ID id,
              n.NAME name,
              n.WORKPLACE workPlace,
              n.JOBCATEGORY jobCategory,
              n.SALARY salary,
              n.RESPONSIBILITIES responsibilities,
              n.REQUIREMENTS requirements,
              n.ISHOT isHot,
              n.UPDATEDATE updateDate,
              n.UPDATEUSER updateUser,
              u.real_name updateName
         from websites_job n
         left join base_users u on n.updateUser = u.account
         
             
                 or    n.jobCategory in
                   
                    #{item}
                
            
            
                or n.id in
                   
                    #{item}
                
             
             
                or n.WORKPLACE in
                   
                    #{item}
                
             
         
         order by n.ISHOT,n.ID desc
   

以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。