用c#开发微信（3）基于Senparc.Weixin框架的接收普通消息处理 （源码下载）

private readonly string Token = ConfigurationManager.AppSettings["token"];//与微信公众账号后台的Token设置保持一致，区分大小写。

protected void Page_Load(object sender, EventArgs e)

{

string signature = Request["signature"];

string timestamp = Request["timestamp"];

string nonce = Request["nonce"];

string echostr = Request["echostr"];

if (Request.HttpMethod == "GET")

{

//get method - 仅在微信后台填写URL验证时触发

if (CheckSignature.Check(signature, timestamp, nonce, Token))

{

WriteContent(echostr); //返回随机字符串则表示验证通过

}

else

{

WriteContent("failed:" + signature + "," + CheckSignature.GetSignature(timestamp, nonce, Token) + "。" +

"如果你在浏览器中看到这句话，说明此地址可以被作为微信公众账号后台的Url，请注意保持Token一致。");

}

Response.End();

}

else

{

//post method - 当有用户想公众账号发送消息时触发

if (!CheckSignature.Check(signature, timestamp, nonce, Token))

{

WriteContent("参数错误！");

return;

}

//设置每个人上下文消息储存的最大数量，防止内存占用过多，如果该参数小于等于0，则不限制

var maxRecordCount = 10;

//自定义MessageHandler，对微信请求的详细判断操作都在这里面。

var messageHandler = new CustomMessageHandler(Request.InputStream, maxRecordCount);

try

{

//测试时可开启此记录，帮助跟踪数据，使用前请确保App_Data文件夹存在，且有读写权限。

messageHandler.RequestDocument.Save(

Server.MapPath("~/App_Data/" + DateTime.Now.Ticks + "_Request_" +

messageHandler.RequestMessage.FromUserName + ".txt"));

//执行微信处理过程

messageHandler.Execute();

//测试时可开启，帮助跟踪数据

messageHandler.ResponseDocument.Save(

Server.MapPath("~/App_Data/" + DateTime.Now.Ticks + "_Response_" +

messageHandler.ResponseMessage.ToUserName + ".txt"));

WriteContent(messageHandler.ResponseDocument.ToString());

return;

}

catch (Exception ex)

{

//将程序运行中发生的错误记录到App_Data文件夹

using (TextWriter tw = new StreamWriter(Server.MapPath("~/App_Data/Error_" + DateTime.Now.Ticks + ".txt")))

{

tw.WriteLine(ex.Message);

tw.WriteLine(ex.InnerException.Message);

if (messageHandler.ResponseDocument != null)

{

tw.WriteLine(messageHandler.ResponseDocument.ToString());

}

tw.Flush();

tw.Close();

}

WriteContent("");

}

finally

{

Response.End();

}

}

}

private void WriteContent(string str)

{

Response.Output.Write(str);

}

public partial class CustomMessageHandler : MessageHandler<MessageContext<IRequestMessageBase, IResponseMessageBase>>

{

public CustomMessageHandler(Stream inputStream, int maxRecordCount = 0)

: base(inputStream, null, maxRecordCount)

{

WeixinContext.ExpireMinutes = 3;

}

public override void OnExecuting()

{

//测试MessageContext.StorageData

if (CurrentMessageContext.StorageData == null)

{

CurrentMessageContext.StorageData = 0;

}

base.OnExecuting();

}

public override void OnExecuted()

{

base.OnExecuted();

CurrentMessageContext.StorageData = ((int)CurrentMessageContext.StorageData) + 1;

}

}

public override IResponseMessageBase DefaultResponseMessage(IRequestMessageBase requestMessage)

{

//所有没有被处理的消息会默认返回这里的结果

var responseMessage = this.CreateResponseMessage<ResponseMessageText>();

responseMessage.Content = "这条消息来自DefaultResponseMessage。";

return responseMessage;

}

/// <summary>

/// 处理文字请求

/// </summary>

/// <returns></returns>

public override IResponseMessageBase OnTextRequest(RequestMessageText requestMessage)

{

//注意：下面泛型ResponseMessageText即返回给客户端的类型，可以根据自己的需要填写ResponseMessageNews等不同类型。

var responseMessage = CreateResponseMessage<ResponseMessageText>();

var result = new StringBuilder();

result.AppendFormat("您刚才发送了文字信息：{0}\r\n\r\n", requestMessage.Content);

if (CurrentMessageContext.RequestMessages.Count > 1)

{

result.AppendFormat("您刚才还发送了如下消息（{0}/{1}）：\r\n", CurrentMessageContext.RequestMessages.Count, CurrentMessageContext.StorageData);

for (int i = CurrentMessageContext.RequestMessages.Count - 2; i >= 0; i--)

{

var historyMessage = CurrentMessageContext.RequestMessages[i];

result.AppendFormat("{0} 【{1}】{2}\r\n",

historyMessage.CreateTime.ToShortTimeString(),

historyMessage.MsgType.ToString(),

(historyMessage is RequestMessageText)

? (historyMessage as RequestMessageText).Content

: "[非文字类型]"

);

}

result.AppendLine("\r\n");

}

result.AppendFormat("如果您在{0}分钟内连续发送消息，记录将被自动保留（当前设置：最多记录{1}条）。过期后记录将会自动清除。\r\n", WeixinContext.ExpireMinutes, WeixinContext.MaxRecordCount);

result.AppendLine("\r\n");

result.AppendLine("您还可以发送【位置】【图片】【语音】【视频】等类型的信息（注意是这几种类型，不是这几个文字），查看不同格式的回复。");

responseMessage.Content = result.ToString();

return responseMessage;

}

/// <summary>

/// 处理图片请求

/// </summary>

/// <param name="requestMessage"></param>

/// <returns></returns>

public override IResponseMessageBase OnImageRequest(RequestMessageImage requestMessage)

{

var responseMessage = CreateResponseMessage<ResponseMessageNews>();

responseMessage.Articles.Add(new Article()

{

Title = "您刚才发送了图片信息",

Description = "您发送的图片将会显示在边上",

PicUrl = requestMessage.PicUrl,

Url = "http://www.hp.com"

});

responseMessage.Articles.Add(new Article()

{

Title = "第二条",

Description = "第二条带连接的内容",

PicUrl = requestMessage.PicUrl,

Url = "http://www.hp.com"

});

return responseMessage;

}

/// <summary>

/// 处理语音请求

/// </summary>

/// <param name="requestMessage"></param>

/// <returns></returns>

public override IResponseMessageBase OnVoiceRequest(RequestMessageVoice requestMessage)

{

var responseMessage = CreateResponseMessage<ResponseMessageMusic>();

responseMessage.Music.MusicUrl = "http://www.qxuninfo.com/music.mp3";

responseMessage.Music.Title = "这里是一条音乐消息";

responseMessage.Music.Description = "时间都去哪儿了";

return responseMessage;

}

/// <summary>

/// 处理视频请求

/// </summary>

/// <param name="requestMessage"></param>

/// <returns></returns>

public override IResponseMessageBase OnVideoRequest(RequestMessageVideo requestMessage)

{

var responseMessage = CreateResponseMessage<ResponseMessageText>();

responseMessage.Content = "您发送了一条视频信息，ID：" + requestMessage.MediaId;

return responseMessage;

}

/// <summary>

/// 处理小视频请求

/// </summary>

/// <param name="requestMessage"></param>

/// <returns></returns>

public override IResponseMessageBase OnShortVideoRequest(RequestMessageShortVideo requestMessage)

{

var responseMessage = this.CreateResponseMessage<ResponseMessageText>();

responseMessage.Content = "您刚才发送的是小视频";

return responseMessage;

}

/// <summary>

/// 处理位置请求

/// </summary>

/// <param name="requestMessage"></param>

/// <returns></returns>

public override IResponseMessageBase OnLocationRequest(RequestMessageLocation requestMessage)

{

var responseMessage = CreateResponseMessage<ResponseMessageText>();

responseMessage.Content = string.Format("您刚才发送了地理位置信息。Location_X：{0}，Location_Y：{1}，Scale：{2}，标签：{3}",

requestMessage.Location_X, requestMessage.Location_Y,

requestMessage.Scale, requestMessage.Label);

return responseMessage;

}

/// <summary>

/// 处理链接消息请求

/// </summary>

/// <param name="requestMessage"></param>

/// <returns></returns>

public override IResponseMessageBase OnLinkRequest(RequestMessageLink requestMessage)

{

var responseMessage = CreateResponseMessage<ResponseMessageText>();

responseMessage.Content = string.Format(@"您发送了一条连接信息：

Title：{0}

Description:{1}

Url:{2}", requestMessage.Title, requestMessage.Description, requestMessage.Url);

return responseMessage;

}