最近在接觸微信開發(fā)，也有在看php的程式碼，不過最後還是使用c#語言了；

在後臺(tái)新建了index.ashx文件，這樣速度比較快；

首先頂部引用了

using System.IO;
using System.Xml;

#一個(gè)是為了實(shí)作接收xml檔案流，一個(gè)是為了後面對(duì)xml檔案的處理；

public?class?index?:?IHttpHandler?{

????private?readonly?string?Token?=?"xxxx";//與微信公眾賬號(hào)后臺(tái)的Token設(shè)置保持一致，區(qū)分大小寫。
????
????public?void?ProcessRequest?(HttpContext?context)?{
????????context.Response.ContentType?=?"text/plain";

????????string?signature?=?context.Request["signature"];
????????string?timestamp?=?context.Request["timestamp"];
????????string?nonce?=?context.Request["nonce"];
????????string?echostr?=?context.Request["echostr"];

????????if?(context.Request.HttpMethod?==?"GET")
????????{
????????????if?(CheckSign(signature,?timestamp,?nonce))
????????????{
????????????????context.Response.Output.Write(echostr);
????????????}
????????}
????????else
????????{
????????????//post?method?-?當(dāng)有用戶想公眾賬號(hào)發(fā)送消息時(shí)觸發(fā)，寫事件
????????}

????????context.Response.End();
????}

首先設(shè)定好Token，接收各種參數(shù)，請(qǐng)求方式是以get的方式發(fā)送；

這裡主要呢是CheckSign()函數(shù)；

public?bool?CheckSign(string?signature,?string?timestamp,?string?nonce)
????{
????????string[]?strs?=?new?string[]?{?Token,?timestamp,?nonce?};
????????Array.Sort(strs);//排序
????????string?strNew?=?string.Join("",?strs);//連接成字符串
????????strNew?=?System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strNew,?"SHA1");//加密
????????if?(signature?==?strNew.ToLower())
????????????return?true;
????????return?false;
????}

其實(shí)這裡的意識(shí)就是接收到A/B/C/D,E為自訂，B/C/E生成F，與A比較,相等回傳輸出D;

string?xmlFromWeChat?=?new?StreamReader(context.Request.InputStream).ReadToEnd();//讀取XML流
????????????XmlDocument?xmldocument?=?new?XmlDocument();
????????????xmldocument.LoadXml(xmlFromWeChat);加載字符串
????????????string?fromContent?=?xmldocument.GetElementsByTagName("Content").Item(0).InnerText;
????????????string?fromMsgType?=?xmldocument.GetElementsByTagName("MsgType").Item(0).InnerText;

寫的不好指出哈！ ！

這樣我們就可以對(duì)接收到的資料進(jìn)行判斷，做出對(duì)應(yīng)的操作，最主要的還是要熟悉介面；

?

下面就一個(gè)例子說明一下，可能沒有抽象的很好：

public?string?receiveText(string?xmlFromWeChat)
????{
????????XmlDocument?xmlText?=?new?XmlDocument();
????????xmlText.LoadXml(xmlFromWeChat);
????????string?content;
????????string?xmlStr;
????????string?keyword?=?xmlText.GetElementsByTagName("Content").Item(0).InnerText.Trim();
????????
???????????????content?=?"歡迎關(guān)注xxx!";
???????????????string[]?defArray?=?{?xmlText.GetElementsByTagName("FromUserName").Item(0).InnerText,?
??????????????????????????????xmlText.GetElementsByTagName("ToUserName").Item(0).InnerText,?
??????????????????????????????ConvertDateTimeInt(DateTime.Now).ToString(),
??????????????????????????????content};
???????????????xmlStr?=?transmitText(defArray);
???????????????
????????}
????????
????????
????????return?xmlStr;
????}

public?string?transmitText(string[]?xmlArray)
????{
????????string?xmlstring?=?@"<xml>
????????????????????????????<tousername></tousername>
????????????????????????????<fromusername></fromusername>
????????????????????????????<createtime>{2}</createtime>
????????????????????????????<msgtype></msgtype>
????????????????????????????<content></content>
????????????????????????????</xml>";
????????string?xmlstr?=?string.Format(xmlstring,?xmlArray);
????????return?xmlstr;
????}

這樣子就完成的一個(gè)簡單的回復(fù)了；