用ajax傳JSON數據
/// <reference path="jquery-1.10.2.js" />
$(function () {
$("#btnLogin").click(function () {
var qq = $.trim($("#txtQQ").val());
var pwd = $.trim($("#txtPwd").val());
if (qq == "" || pwd == "") {
alert("qq或密碼不能為空");
} else {
$.post("../ajax/Handler1.ashx", { "qq": qq, "pwd": pwd }, function (data) {
//switch (data) {
// case "1":
// alert("登錄成功");
// break;
// case "2":
// alert("QQ或者密碼錯誤");
// break;
// case "3":
// alert("程序異常");
// break;
// }
var data=JSON.parse(data);
if(data.Success==true){
alert(data.Msg);
}else{
alert(data.Msg);
}
});
};
})
})
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="exercise_20180305.WebForm1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<script src="js/jquery-1.10.2.js"></script>
<script src="js/WebForm1.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr><td>QQ：</td><td><input type="text" id="txtQQ" /></td></tr>
<tr><td>密碼：</td><td><input type="password" id="txtPwd" /></td></tr>
<tr><td><input type="button" value="登錄" id="btnLogin" /></td></tr>
</table>
</div>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.Script.Serialization;
using System.Collections;
namespace exercise_20180305.ajax
{
public class ReturnMsg
{
public bool Success { get; set; }
public string Msg { get; set; }
public int ReCount { get; set; }
}
/// <summary>
/// Handler1 的摘要說明
/// </summary>
public class Handler1 : IHttpHandler
{
string connStr = ConfigurationManager.ConnectionStrings["sq_ruanmou"].ToString();
SqlConnection con = null;
SqlCommand cmd = null;
public void OpenDB()
{
con = new SqlConnection(connStr);
con.Open();
}
public void ProcessRequest(HttpContext context)
{
ReturnMsg rmsg = new ReturnMsg();
JavaScriptSerializer jss = new JavaScriptSerializer();
// Dictionary<string,object> dic=new Dictionary<string,object>;
try
{
string qq = context.Request.Form["qq"];
string pwd = context.Request.Form["pwd"];
string sql = "select count(*) from UserInfor where QQ=@QQ and Pwd=@Pwd";
SqlParameter[] para = new SqlParameter[]{
new SqlParameter("@QQ",qq),
new SqlParameter("@Pwd",pwd)
};
OpenDB();
using (cmd = new SqlCommand(sql, con))
{
foreach (var p in para)
{
cmd.Parameters.Add(p);
};
int icount = Convert.ToInt32(cmd.ExecuteScalar().ToString());
rmsg.ReCount = icount;
if (icount > 0)
{
rmsg.Success = true;
rmsg.Msg = "登錄成功";
//dic.Add("Success":true）;
//dic.Add("Msg":"登錄成功");
}
else
{
rmsg.Success = false;
rmsg.Msg = "QQ或者密碼錯誤";
//dic.Add("Success":false）;
//dic.Add("Msg":"QQ或者密碼錯誤");
}
}
}
catch (Exception ex)
{
rmsg.Success = false;
rmsg.Msg = "程序異常";
//dic.Add("Success":false）;
//dic.Add("Msg":"程序異常");
}
context.Response.Write(jss.Serialize(rmsg));
//context.Response.Write(jss.Serialize(dic));
}
public bool IsReusable
{
get
{
return false;
}
}
}
}
用ajax傳JSON數據