C#微信公众号/订阅号开发 接口源码

using System;
using System.Web;
using System.IO;
using System.Text;
using System.Web.Security;
using weixin_api;

public class wxgz_api : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string postString = string.Empty;
if (HttpContext.Current.Request.HttpMethod.ToUpper() == "POST")
{
//微信服务器对接口消息
using (Stream stream = HttpContext.Current.Request.InputStream)
{
Byte[] postBytes = new Byte[stream.Length];
stream.Read(postBytes, 0, (Int32)stream.Length);
postString = Encoding.UTF8.GetString(postBytes);
Handle(postString);
}
}
else
{
//微信进行的Get测试(开发者认证)
WxAuth();
}
}

/// <summary>
/// 处理信息并应答
/// </summary>
private void Handle(string postStr)
{
messageHelp help = new messageHelp();
string responseContent = help.ReturnMessage(postStr);

HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
HttpContext.Current.Response.Write(responseContent);
}

#region 微信验证
public void WxAuth()
{
string token = "xxxxxxxx";
if (string.IsNullOrEmpty(token))
{
return;
}
string echoString = HttpContext.Current.Request.QueryString["echostr"];
string signature = HttpContext.Current.Request.QueryString["signature"];
string timestamp = HttpContext.Current.Request.QueryString["timestamp"];
string nonce = HttpContext.Current.Request.QueryString["nonce"];
if (CheckSignature(token, signature, timestamp, nonce))
{
if (!string.IsNullOrEmpty(echoString))
{
HttpContext.Current.Response.Write(echoString);
HttpContext.Current.Response.End();
}
}
}

/// <summary>
/// 验证微信签名
/// </summary>
public bool CheckSignature(string token, string signature, string timestamp, string nonce)
{
string[] ArrTmp = { token, timestamp, nonce };
Array.Sort(ArrTmp);
string tmpStr = string.Join("", ArrTmp);
tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
tmpStr = tmpStr.ToLower();
if (tmpStr == signature)
{
return true;
}
else
{
return false;
}
}
#endregion

public bool IsReusable
{
get
{
return false;
}
}
}