springmvc后台接收List参数的几种办法

方法一：把list字段封装到一个vo里面（如果只有一个参数那么直接写参数就可以了），然后请求参数设置为@RequestBody。

后端代码：

@RequestMapping(value = "/createAttendance")
    public Result createAttendance(@RequestBody EmployeeAttendanceVO vo) {
        Result result = new Result(ResultCode.SUCCESS);
        try {
            attendanceSumService.createAttendanceData2(vo.getYear(),vo.getMonth(),vo.getData());
        } catch (Exception e) {
            e.printStackTrace();
            result = new Result(ResultCode.EROR);
            result.setMsg(e.getMessage());
        }
        return result;
    }

public class EmployeeAttendanceVO implements Serializable{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    
    private String year;
    private String month;
    private List<String> data;
    public String getYear() {
        return year;
    }
    public void setYear(String year) {
        this.year = year;
    }
    public String getMonth() {
        return month;
    }
    public void setMonth(String month) {
        this.month = month;
    }
    public List<String> getData() {
        return data;
    }
    public void setData(List<String> data) {
        this.data = data;
    }
    
    

}

前端代码：

$.ajax({  
                        type: "POST",  
                        contentType: "application/json"  ,//必须加  
                        dataType: "json",  
                        url: "<%=path%>/dataAnalysis/selsPoverty",  
                        data:  JSON.stringify({ 'year': year, 'bar': qhdm })  ,  
                        success: function (data) {}
})

方法二：使用@RequestParam(value = "ids[]")  List<Integer>  ids 或者 @RequestParam(value = "ids[]")  Integer[]  ids

后端代码：

@RequestMapping("/test/setNoProcess") 
 @ResponseBody
 public String setNoProcess(@RequestParam(value = "ids[]")  Integer[]  ids){
  
   List<Integer>   list= Arrays.asList(ids); 
  
  try{
   decDeliverOrderService.getMapper().statusBatchUpdateToInit(list);
  }catch(Exception e){
   log.error(e);
   return  "error";
  }
  return  "success";
 }

前端代码：

$(function(){
    var contacts = [];
    contacts[0] = 'xiaoming';
    contacts[1] = 'daming';
    $.ajax({
        type:'GET',
        url:'demo/sendContacts',
        data:contacts,
        success:function(result){
            alert(result);
        }
    });
})