假设从数据库提取数据,在html页面中显示:

1,建立服务器后端处理程序

添加“一般处理程序”,如下图

2.编写“Handler2.ashx”代码,如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Script.Serialization;
namespace WebApplication5
{
/// 
/// Handler1 的摘要说明
/// 
public class Handler1 : IHttpHandler
{
public void Proce***equest(HttpContext context)
{
//采用EF从数据库中提取数据
WeatherDBEntities weatherDbcontext = new WeatherDBEntities();
var dataset = from data in weatherDbcontext.T_Station
select new { data.StationName, data.StationPosition, data.Lat, data.Lon };
JavaScriptSerializer tool = new JavaScriptSerializer();
context.Response.ContentType = "text/plain"; //字符串形式
context.Response.Write(tool.Serialize(dataset));//将字符串编码为JSON类型
//
//备注,要从javascript中传参数的话,如下代码,data就是传递的参数。而在本文件中,通过context.request("zipcode")来获取
//如context.Response.Write(context.Request.Params["zipcode"]);
//            $.ajax({
//  url: "/api/getWeather",
//data: {
//  zipcode: 97201
//},
//  success: function( data ) {
//    $( "#weather-temp" ).html( "" + data + " degrees" );
//  }
//});
}
public bool IsReusable
{
get
{
return false;
}
}
}
}

3.添加Html页面:HtmlPage1.html

4.结果如下