ajax中post和get用法详解

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using BLL;
using Model;
public partial class ajaxlogin : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string result = "-1";
        string uName = Request.Form["un"];
        string uPwd = Request.Form["up"];
        if (!string.IsNullOrEmpty(uName) && !string.IsNullOrEmpty(uPwd))
        {
            BLL.StudentMananger bs = new StudentMananger();
            Model.Students stu = bs.GetSingeByConition(uName, uPwd);
            if (stu != null)
            {
                result ="1";
  
            }
         
                Response.Write(result);
                Response.End();
       
        }
    }
}

 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ajaxlogin.aspx.cs" Inherits="ajaxlogin" %>

 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 

<html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server">     <title></title>     <script src="js/ajax.js" type="text/javascript"></script>     <script type="text/javascript">         window.onload = function () {           //  var xhr = createXmlHttp();             gel("Button1").onclick = onLogin;         }         function onLogin() {             var xhr = createXmlHttp();             var getname = gel("txtname").value;             var getpwd = gel("txtpwd").value;             var data = "un=" + getname + "&up=" + getpwd;             xhr.open("POST", "ajaxlogin.aspx", true);             xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");             xhr.onreadystatechange = function () {                               if (xhr.readyState == 4) {                     if (xhr.status == 200) {                         var reponseText = xhr.responseText;                         alert(reponseText);                         if (reponseText == "1") {                             alert("登录成功！");                             window.location = "Default.aspx";                         } else {                             alert("登录失败！");                         }                     }                     else {                         alert("服务器错误！xhr.status=" + xhr.status);                     }                 }             }             xhr.send(data);         }     </script> </head> <body>     <form id="form1" runat="server">     &nbsp;<div>             <input id="txtname" type="text" /><input id="txtpwd" type="text" /><input             id="Button1" type="button" value="button" /></div>     </form>

 

     </body> </html>

 

 

 

 

function gel(cid) {     return document.getElementById(cid); }

 

function createXmlHttp() {//创建xhr对象     var xhobj = false;     try {         xhobj = new ActiveXObject("Msxml2.XMLHTTP"); // ie msxml3.0+     } catch (e) {         try {             xhobj = new ActiveXObject("Microsoft.XMLHTTP"); //ie msxml2.6         } catch (e2) {             xhobj = false;         }     }     if (!xhobj && typeof XMLHttpRequest != 'undefined') {// Firefox, Opera 8.0+, Safari         xhobj = new XMLHttpRequest();     }     return xhobj; }

 

 

posted @ 2012-11-26 18:12  诗意花  阅读(114)  评论(0)    收藏  举报