前台提交json 字符串到controller

	@RequestMapping("doAdd")
	public ResultModel  createRecord(@RequestBody String json){
		 ResultModel createRecord = recordService.insertRecord(json);
		return createRecord;
	}

 

前台数据传送方式：

var dates = {
                "userId":userId,
                "externalUserId":externalUserId,
                "pageIndex":pageIndex
            };
            $.ajax({
                type: 'post',
                url: '',
                data: JSON.stringify(dates),
                dataType:'json',
                contentType: 'application/json',
                success: function(data){},
                error: function () {}
            })