ajax使用向Spring MVC发送JSON数据时,后端Controller在接受JSON数据时报org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported的错误. 解决办法是设置ajax的contentType为"application/json" $.ajax({ $.
上期内容回顾 聚合查询和分组查询 # 聚合查询 max min sum avg count # 查询关键字:aggregate from django.db.models import Max, Min, Sum, Avg, Count res = Book.objects.aggregate(max_price=Max('price'), ) # 分组查询 group by """ 默认情况下,分组之后依然可以查询到所有的字段数据,如果设置为了严格模式,只能获取到分组的那个
转自:http://www.cnblogs.com/digdeep/p/5574366.html 1.前台页面 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
封装好的:ajax.js function ajax(url, fnSucc,fnFaild){ //1[创建] if(window.XMLHttpRequest){ var oAjax = new XMLHttpRequest(); }else{ var oAjax = new ActiveXObject("Microsoft.XMLHTTP"); }; //2: [连接]true:表示异步 oAjax.open('GET',url,true); //3:[发送] oAjax.sen
