<xml> 
<ToUserName><![CDATA[{0}]]></ToUserName> 
<FromUserName><![CDATA[{1}]]></FromUserName> 
<CreateTime>{2}</CreateTime> 
<MsgType><![CDATA[text]]></MsgType> 
<Content><![CDATA[{3}]]></Content> 
</xml>

•圖片消息

<xml> 
<ToUserName><![CDATA[{0}]]></ToUserName> 
<FromUserName><![CDATA[{1}]]></FromUserName> 
<CreateTime>{2}</CreateTime> 
<MsgType><![CDATA[image]]></MsgType> 
<Image> 
<MediaId><![CDATA[{3}]]></MediaId> 
</Image> 
</xml>

消息格式已經(jīng)有了，接著我們只需要設(shè)置相應(yīng)的參數(shù)即可。

responseContent = string.Format(ReplyType.Message_Text, 
 FromUserName.InnerText, 
 ToUserName.InnerText, 
DateTime.Now.Ticks, 
String.IsNullOrEmpty(reply)?"Sorry,I can not follow you." :reply);

3.用戶消息與服務(wù)器消息的加密解密

微信公共平臺開發(fā)者文檔中提供有c++,C#,java等各種語言的加密解密示例，我們用到的是C#，只需要將其中的兩個文件添加到項目中即可，Sample.cs是微信團(tuán)隊給出的示例代碼，不需要引用，對

WXBizMsgCrypt.cs與Cryptography.cs文件添加引用即可。為了進(jìn)一步封裝和方便調(diào)用，我又新建了一個類WeChatSecurityHelper

類中的定義兩個方法，分別來進(jìn)行加密（EncryptMsg）和解密（DecryptMsg），創(chuàng)建一個WXBizMsgCrypt對象，調(diào)用它的方法加解密，具體代碼可見代碼示例

WeChatSecurityHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Common
{
  public class WeChatSecurityHelper
  {
    /// <summary>
    /// 定義Token，與微信公共平臺上的Token保持一致
    /// </summary>
    private const string Token = "StupidMe";
    /// <summary>
    /// AppId 要與 微信公共平臺 上的 AppId 保持一致
    /// </summary>
    private const string AppId = "11111111111";
    /// <summary>
    /// 加密用 
    /// </summary>
    private const string AESKey = "pvX2KZWRLQSkUAbvArgLSAxCwTtxgFWF3XOnJ9iEUMG";

    private static Tencent.WXBizMsgCrypt wxcpt = new Tencent.WXBizMsgCrypt(Token, AESKey, AppId);
    private string signature,timestamp,nonce;
    private static LogHelper logger = new LogHelper(typeof(WeChatSecurityHelper));


    public WeChatSecurityHelper(string signature, string timestamp, string nonce)
    {
      this.signature = signature;
      this.timestamp = timestamp;
      this.nonce = nonce;
    }

    /// <summary>
    /// 加密消息
    /// </summary>
    /// <param name="msg">要加密的消息</param>
    /// <returns>加密后的消息</returns>
    public string EncryptMsg(string msg)
    {
      string encryptMsg="";
      int result = wxcpt.EncryptMsg(msg, timestamp, nonce, ref encryptMsg);
      if (result == 0)
      {
        return encryptMsg;
      }
      else
      {
        logger.Error("消息加密失敗");
        return "";
      }
    }

    /// <summary>
    /// 解密消息
    /// </summary>
    /// <param name="msg">消息體</param>
    /// <returns>明文消息</returns>
    public string DecryptMsg(string msg)
    {
      string decryptMsg = "";
      int result = wxcpt.DecryptMsg(signature, timestamp, nonce, msg,ref decryptMsg);
      if (result != 0)
      {
        logger.Error("消息解密失敗,result:"+result);
      }
      return decryptMsg;
    }
  }
}

以上所述就是本文的全部內(nèi)容了，希望大家能夠喜歡。

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