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asp.net微信公众平台开发
http://mp.weixin.qq.com/wiki/index.php?title=%E6%B6%88%E6%81%AF%E6%8E%A5%E5%8F%A3%E6%8C%87%E5%8D%97
微信公众平台接口指南
微信公众平台的开发比较简单,首先是网址接入
公众平台用户提交信息后,微信服务器将发送GET请求到填写的URL上,并且带上四个参数:
参数 | 描述 |
---|---|
signature | 微信加密签名 |
timestamp | 时间戳 |
nonce | 随机数 |
echostr | 随机字符串 |
开发者通过检验signature对请求进行校验(下面有校验方式)。若确认此次GET请求来自微信服务器,请原样返回echostr参数内容,则接入生效,否则接入失败。
signature结合了开发者填写的token参数和请求中的timestamp参数、nonce参数。
加密/校验流程:1. 将token、timestamp、nonce三个参数进行字典序排序2. 将三个参数字符串拼接成一个字符串进行sha1加密3. 开发者获得加密后的字符串可与signature对比,标识该请求来源于微信
[csharp] view plaincopy
- /// <summary>
- /// 验证签名
- /// </summary>
- /// <param name="signature"></param>
- /// <param name="timestamp"></param>
- /// <param name="nonce"></param>
- /// <returns></returns>
- public static bool CheckSignature(String signature, String timestamp, String nonce)
- {
- String[] arr = new String[] { token, timestamp, nonce };
- // 将token、timestamp、nonce三个参数进行字典序排序
- Array.Sort<String>(arr);
- StringBuilder content = new StringBuilder();
- for (int i = 0; i < arr.Length; i++)
- {
- content.Append(arr[i]);
- }
- String tmpStr = SHA1_Encrypt(content.ToString());
- // 将sha1加密后的字符串可与signature对比,标识该请求来源于微信
- return tmpStr != null ? tmpStr.Equals(signature) : false;
- }
- /// <summary>
- /// 使用缺省密钥给字符串加密
- /// </summary>
- /// <param name="Source_String"></param>
- /// <returns></returns>
- public static string SHA1_Encrypt(string Source_String)
- {
- byte[] StrRes = Encoding.Default.GetBytes(Source_String);
- HashAlgorithm iSHA = new SHA1CryptoServiceProvider();
- StrRes = iSHA.ComputeHash(StrRes);
- StringBuilder EnText = new StringBuilder();
- foreach (byte iByte in StrRes)
- {
- EnText.AppendFormat("{0:x2}", iByte);
- }
- return EnText.ToString();
- }
接入后是消息推送当普通微信用户向公众账号发消息时,微信服务器将POST该消息到填写的URL上。
[csharp] view plaincopy
- protected void Page_Load(object sender, EventArgs e)
- {
- if (Request.HttpMethod.ToUpper() == "GET")
- {
- // 微信加密签名
- string signature = Request.QueryString["signature"];
- // 时间戳
- string timestamp = Request.QueryString["timestamp"];
- // 随机数
- string nonce = Request.QueryString["nonce"];
- // 随机字符串
- string echostr = Request.QueryString["echostr"];
- if (WeixinServer.CheckSignature(signature, timestamp, nonce))
- {
- Response.Write(echostr);
- }
- }
- else if (Request.HttpMethod.ToUpper() == "POST")
- {
- StreamReader stream = new StreamReader(Request.InputStream);
- string xml = stream.ReadToEnd();
- processRequest(xml);
- }
- }
- /// <summary>
- /// 处理微信发来的请求
- /// </summary>
- /// <param name="xml"></param>
- public void processRequest(String xml)
- {
- try
- {
- // xml请求解析
- Hashtable requestHT = WeixinServer.ParseXml(xml);
- // 发送方帐号(open_id)
- string fromUserName = (string)requestHT["FromUserName"];
- // 公众帐号
- string toUserName = (string)requestHT["ToUserName"];
- // 消息类型
- string msgType = (string)requestHT["MsgType"];
- //文字消息
- if (msgType == ReqMsgType.Text)
- {
- // Response.Write(str);
- string content = (string)requestHT["Content"];
- if(content=="1")
- {
- // Response.Write(str);
- Response.Write(GetNewsMessage(toUserName, fromUserName));
- return;
- }
- if (content == "2")
- {
- Response.Write(GetUserBlogMessage(toUserName, fromUserName));
- return;
- }
- if (content == "3")
- {
- Response.Write(GetGroupMessage(toUserName, fromUserName));
- return;
- }
- if (content == "4")
- {
- Response.Write(GetWinePartyMessage(toUserName, fromUserName));
- return;
- }
- Response.Write(GetMainMenuMessage(toUserName, fromUserName, "你好,我是vinehoo,"));
- }
- else if (msgType == ReqMsgType.Event)
- {
- // 事件类型
- String eventType = (string)requestHT["Event"];
- // 订阅
- if (eventType==ReqEventType.Subscribe)
- {
- Response.Write(GetMainMenuMessage(toUserName, fromUserName, "谢谢您的关注!,"));
- }
- // 取消订阅
- else if (eventType==ReqEventType.Unsubscribe)
- {
- // TODO 取消订阅后用户再收不到公众号发送的消息,因此不需要回复消息
- }
- // 自定义菜单点击事件
- else if (eventType==ReqEventType.CLICK)
- {
- // TODO 自定义菜单权没有开放,暂不处理该类消息
- }
- }
- else if (msgType == ReqMsgType.Location)
- {
- }
- }
- catch (Exception e)
- {
- }
- }<pre name="code" class="csharp"> protected void Page_Load(object sender, EventArgs e)
- {
- if (Request.HttpMethod.ToUpper() == "GET")
- {
- // 微信加密签名
- string signature = Request.QueryString["signature"];
- // 时间戳
- string timestamp = Request.QueryString["timestamp"];
- // 随机数
- string nonce = Request.QueryString["nonce"];
- // 随机字符串
- string echostr = Request.QueryString["echostr"];
- if (WeixinServer.CheckSignature(signature, timestamp, nonce))
- {
- Response.Write(echostr);
- }
- }
- else if (Request.HttpMethod.ToUpper() == "POST")
- {
- StreamReader stream = new StreamReader(Request.InputStream);
- string xml = stream.ReadToEnd();
- processRequest(xml);
- }
- }
- /// <summary>
- /// 处理微信发来的请求
- /// </summary>
- /// <param name="xml"></param>
- public void processRequest(String xml)
- {
- try
- {
- // xml请求解析
- Hashtable requestHT = WeixinServer.ParseXml(xml);
- // 发送方帐号(open_id)
- string fromUserName = (string)requestHT["FromUserName"];
- // 公众帐号
- string toUserName = (string)requestHT["ToUserName"];
- // 消息类型
- string msgType = (string)requestHT["MsgType"];
- //文字消息
- if (msgType == ReqMsgType.Text)
- {
- // Response.Write(str);
- string content = (string)requestHT["Content"];
- if(content=="1")
- {
- // Response.Write(str);
- Response.Write(GetNewsMessage(toUserName, fromUserName));
- return;
- }
- if (content == "2")
- {
- Response.Write(GetUserBlogMessage(toUserName, fromUserName));
- return;
- }
- if (content == "3")
- {
- Response.Write(GetGroupMessage(toUserName, fromUserName));
- return;
- }
- if (content == "4")
- {
- Response.Write(GetWinePartyMessage(toUserName, fromUserName));
- return;
- }
- Response.Write(GetMainMenuMessage(toUserName, fromUserName, "你好,我是vinehoo,"));
- }
- else if (msgType == ReqMsgType.Event)
- {
- // 事件类型
- String eventType = (string)requestHT["Event"];
- // 订阅
- if (eventType==ReqEventType.Subscribe)
- {
- Response.Write(GetMainMenuMessage(toUserName, fromUserName, "谢谢您的关注!,"));
- }
- // 取消订阅
- else if (eventType==ReqEventType.Unsubscribe)
- {
- // TODO 取消订阅后用户再收不到公众号发送的消息,因此不需要回复消息
- }
- // 自定义菜单点击事件
- else if (eventType==ReqEventType.CLICK)
- {
- // TODO 自定义菜单权没有开放,暂不处理该类消息
- }
- }
- else if (msgType == ReqMsgType.Location)
- {
- }
- }
- catch (Exception e)
- {
- }
- }</pre><br>
- <pre></pre>
- <br>
- <br>
asp.net微信公众平台开发
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