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mybatis使用foreach踩坑记录

在使用fireach是最关键的是collection属性

dao层：

/*通过表名（日期）查询*/    List
   
     selectWagesBySheet(List
    
      sheetNameList);    /*通过用户名+表名（日期）查询*/    List
     
       selectByPerson(@Param("personNumber") String personNumber,                                     @Param("sheetNameList") List
      
        sheetNameList);
      
     
    
   

xml文件中foreach属性的选择:

单参数的collection=“list”

        select person_number as personNumber,user_name as userName,        account_number as accountNumber,wage as wage,other_money as otherMoney,reward as reward,        should as should,old as old,medical as medical,lose_job as loseJob,trade_union as tradeUnion,        housing_fund as housingFund,take_off as takeOff,total as total,sheet_name as sheetName        from tt_excel_wages        where sheet_name in                    #{sheetNameList}                        select person_number as personNumber,user_name as userName,        account_number as accountNumber,wage as wage,other_money as otherMoney,reward as reward,        should as should,old as old,medical as medical,lose_job as loseJob,trade_union as tradeUnion,        housing_fund as housingFund,take_off as takeOff,total as total,sheet_name as sheetName        from tt_excel_wages        where person_number=#{personNumber}        and sheet_name in                    #{sheetNameList}            

controller层传参说明：

这里我都是使用@RequestParam进行传参，列举了get请求和post请求

/*通过excel的表名进行查询*/    @GetMapping(value = "getWages")    @ResponseBody    public ResponseVO getWages(@RequestParam("sheetNames")List
   
     sheetNames){           try {               WagesRequestVo wagesRequestVo =new WagesRequestVo();            //获取数据            List
    
      wagesInfoVos = wagesServer.getWagesBySheet(sheetNames);            wagesRequestVo.setWagesInfoVoList(wagesInfoVos);            if (wagesInfoVos==null){                   return ResponseVO.appFail("查询失败");            }            return ResponseVO.success(wagesRequestVo);        }catch (Exception e){               return ResponseVO.serviceFail(e.getMessage());        }    }    /*通过用户名和表名进行查询*/    @PostMapping("getWagesByNumber")    @ResponseBody    public  ResponseVO getWagesByNumber(@RequestParam("personNumber")String personNumber,                                        @RequestParam("sheetName[]")List
     
       sheetName){           try {               WagesRequestVo wagesRequestVo =new WagesRequestVo();            //获取数据            List
      
        wagesInfoVos = wagesServer.getWagesByPerson(personNumber,sheetName);            wagesRequestVo.setWagesInfoVoList(wagesInfoVos);            if (wagesInfoVos==null){                   return ResponseVO.appFail("查询失败");            }            return ResponseVO.success(wagesRequestVo);        }catch (Exception e){               return ResponseVO.serviceFail(e.getMessage());        }    }
      
     
    
   

postman截图：

get请求传参方式：

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