當(dāng)普通微信用戶向公眾賬號(hào)發(fā)消息時(shí)，微信服務(wù)器將POST消息的XML數(shù)據(jù)包到開(kāi)發(fā)者填寫(xiě)的URL上。
請(qǐng)注意：
- 1、關(guān)于重試的消息排重，推薦使用msgid排重。
- 2、微信服務(wù)器在五秒內(nèi)收不到響應(yīng)會(huì)斷掉連接，并且重新發(fā)起請(qǐng)求，總共重試三次。假如服務(wù)器無(wú)法保證在五秒內(nèi)處理并回復(fù)，可以直接回復(fù)空串，微信服務(wù)器不會(huì)對(duì)此作任何處理，并且不會(huì)發(fā)起重試。詳情請(qǐng)見(jiàn)“發(fā)送消息-被動(dòng)回復(fù)消息”。
- 3、為了保證更高的安全保障，開(kāi)發(fā)者可以在公眾平臺(tái)官網(wǎng)的開(kāi)發(fā)者中心處設(shè)置消息加密。開(kāi)啟加密后，用戶發(fā)來(lái)的消息會(huì)被加密，公眾號(hào)被動(dòng)回復(fù)用戶的消息也需要加密（但開(kāi)發(fā)者通過(guò)客服接口等API調(diào)用形式向用戶發(fā)送消息，則不受影響）。關(guān)于消息加解密的詳細(xì)說(shuō)明，請(qǐng)見(jiàn)“消息加解密說(shuō)明”。
各消息類型的推送XML數(shù)據(jù)包結(jié)構(gòu)如下：
文本消息
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1348831860/CreateTime>
MsgType>![CDATA[text]]>/MsgType>
Content>![CDATA[this is a test]]>/Content>
MsgId>1234567890123456/MsgId>
/xml>
圖片消息
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1348831860/CreateTime>
MsgType>![CDATA[image]]>/MsgType>
PicUrl>![CDATA[this is a url]]>/PicUrl>
MediaId>![CDATA[media_id]]>/MediaId>
MsgId>1234567890123456/MsgId>
/xml>
語(yǔ)音消息
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1357290913/CreateTime>
MsgType>![CDATA[voice]]>/MsgType>
MediaId>![CDATA[media_id]]>/MediaId>
Format>![CDATA[Format]]>/Format>
MsgId>1234567890123456/MsgId>
/xml>
請(qǐng)注意，開(kāi)通語(yǔ)音識(shí)別后，用戶每次發(fā)送語(yǔ)音給公眾號(hào)時(shí)，微信會(huì)在推送的語(yǔ)音消息XML數(shù)據(jù)包中，增加一個(gè)Recongnition字段 （注：由于客戶端緩存，開(kāi)發(fā)者開(kāi)啟或者關(guān)閉語(yǔ)音識(shí)別功能，對(duì)新關(guān)注者立刻生效，對(duì)已關(guān)注用戶需要24小時(shí)生效。開(kāi)發(fā)者可以重新關(guān)注此帳號(hào)進(jìn)行測(cè)試）。開(kāi)啟語(yǔ)音識(shí)別后的語(yǔ)音XML數(shù)據(jù)包如下：
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1357290913/CreateTime>
MsgType>![CDATA[voice]]>/MsgType>
MediaId>![CDATA[media_id]]>/MediaId>
Format>![CDATA[Format]]>/Format>
Recognition>![CDATA[騰訊微信團(tuán)隊(duì)]]>/Recognition>
MsgId>1234567890123456/MsgId>
/xml>
多出的字段中，F(xiàn)ormat為語(yǔ)音格式，一般為amr，Recognition為語(yǔ)音識(shí)別結(jié)果，使用UTF8編碼。
視頻消息
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1357290913/CreateTime>
MsgType>![CDATA[video]]>/MsgType>
MediaId>![CDATA[media_id]]>/MediaId>
ThumbMediaId>![CDATA[thumb_media_id]]>/ThumbMediaId>
MsgId>1234567890123456/MsgId>
/xml>
小視頻消息
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1357290913/CreateTime>
MsgType>![CDATA[shortvideo]]>/MsgType>
MediaId>![CDATA[media_id]]>/MediaId>
ThumbMediaId>![CDATA[thumb_media_id]]>/ThumbMediaId>
MsgId>1234567890123456/MsgId>
/xml>
地理位置消息
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1351776360/CreateTime>
MsgType>![CDATA[location]]>/MsgType>
Location_X>23.134521/Location_X>
Location_Y>113.358803/Location_Y>
Scale>20/Scale>
Label>![CDATA[位置信息]]>/Label>
MsgId>1234567890123456/MsgId>
/xml>
鏈接消息
xml>
ToUserName>![CDATA[toUser]]>/ToUserName>
FromUserName>![CDATA[fromUser]]>/FromUserName>
CreateTime>1351776360/CreateTime>
MsgType>![CDATA[link]]>/MsgType>
Title>![CDATA[公眾平臺(tái)官網(wǎng)鏈接]]>/Title>
Description>![CDATA[公眾平臺(tái)官網(wǎng)鏈接]]>/Description>
Url>![CDATA[url]]>/Url>
MsgId>1234567890123456/MsgId>
/xml>
接上篇，看ResponseXML(postString);方法如下
/// summary>
/// 獲取用戶發(fā)送的消息
/// /summary>
/// param name="postString">/param>
private void ResponseXML(string postString)
{
//使用XMLDocument加載信息結(jié)構(gòu)
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(postString);
XmlElement rootElement = xmlDoc.DocumentElement;//獲取文檔的根
XmlNode MsgType = rootElement.SelectSingleNode("MsgType"); //獲取消息的文本類型
RequestXML requestXML = new RequestXML();//聲明實(shí)例，獲取各個(gè)屬性并賦值
requestXML.ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText;//公眾號(hào)
requestXML.FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText;//用戶
requestXML.CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText;//創(chuàng)建時(shí)間
requestXML.MsgType = MsgType.InnerText;//消息類型
///對(duì)消息的不同類型進(jìn)行賦值
if (requestXML.MsgType == "text")
{
//賦值文本信息內(nèi)容
requestXML.Content = rootElement.SelectSingleNode("Content").InnerText;
}
if (requestXML.MsgType.Trim() == "location")
{
///賦值地理位置緯度，經(jīng)度，地圖縮放比例，地理位置說(shuō)明
requestXML.Location_X = rootElement.SelectSingleNode("Location_X").InnerText;
requestXML.Location_Y = rootElement.SelectSingleNode("Location_Y").InnerText;
requestXML.Scale = rootElement.SelectSingleNode("Scale").InnerText;
requestXML.Label = rootElement.SelectSingleNode("Label").InnerText;
}
if (requestXML.MsgType.Trim().ToLower() == "event")
{
///賦值事件名稱和事件key值
requestXML.EventName = rootElement.SelectSingleNode("Event").InnerText;
requestXML.EventKey = rootElement.SelectSingleNode("EventKey").InnerText;
}
if (requestXML.MsgType.Trim().ToLower() == "voice")
{
///賦值語(yǔ)音識(shí)別結(jié)果，賦值之前一定要記得在開(kāi)發(fā)者模式下，把語(yǔ)音識(shí)別功能開(kāi)啟，否則獲取不到
requestXML.Recognition = rootElement.SelectSingleNode("Recognition").InnerText;
}
ResponseMsg(requestXML);
}
語(yǔ)音識(shí)別功能開(kāi)啟如下：
requestXML是我單獨(dú)創(chuàng)建的一個(gè)類，該類聲明了消息中常用的屬性字段，如下：
/// summary>
/// 接收消息的實(shí)體類
/// /summary>
public class RequestXML
{
private String toUserName = String.Empty;
/// summary>
/// 本公眾號(hào)
/// /summary>
public String ToUserName{get;set;}
/// summary>
/// 用戶微信號(hào)
/// /summary>
public String FromUserName{get;set;}
/// summary>
/// 創(chuàng)建時(shí)間
/// /summary>
public String CreateTime{get;set;}
/// summary>
/// 信息類型
/// /summary>
public String MsgType{get;set;}
/// summary>
/// 信息內(nèi)容
/// /summary>
public String Content{get;set;}
/*以下為事件類型的消息特有的屬性*/
/// summary>
/// 事件名稱
/// /summary>
public String EventName{get;set;}
/// summary>
/// 事件值
/// /summary>
public string EventKey { get; set; }
/*以下為圖文類型的消息特有的屬性*/
/// summary>
/// 圖文消息的個(gè)數(shù)
/// /summary>
public int ArticleCount { get; set; }
/// summary>
/// 圖文消息的標(biāo)題
/// /summary>
public string Title { get; set; }
/// summary>
/// 圖文消息的簡(jiǎn)介
/// /summary>
public string Description { get; set; }
/// summary>
/// 圖文消息圖片的鏈接地址
/// /summary>
public string PicUrl { get; set; }
/// summary>
/// 圖文消息詳情鏈接地址
/// /summary>
public string Url { get; set; }
/// summary>
/// 圖文消息集合
/// /summary>
public ListRequestXML> Articles { get; set;}
/*以下為地理位置類型的消息特有的屬性*/
/// summary>
/// 地理位置緯度
/// /summary>
public String Location_X { get; set; }
/// summary>
/// 地理位置經(jīng)度
/// /summary>
public String Location_Y { get; set; }
/// summary>
/// 地圖縮放比例
/// /summary>
public String Scale { get; set; }
/// summary>
/// 地圖位置說(shuō)明
/// /summary>
public String Label { get; set; }
/// summary>
/// 語(yǔ)音消息特有字段
/// /summary>
public String Recognition { get; set; }
}
繼續(xù)關(guān)注 ResponseMsg(requestXML);方法如下
private void ResponseMsg(RequestXML requestXML)
{
string MsgType = requestXML.MsgType;
try
{
//根據(jù)消息類型判斷發(fā)送何種類型消息
switch (MsgType)
{
case "text":
SendTextCase(requestXML);//發(fā)送文本消息
break;
case "event"://發(fā)送事件消息
if (!string.IsNullOrWhiteSpace(requestXML.EventName) requestXML.EventName.ToString().Trim().Equals("subscribe"))
{
SendWelComeMsg(requestXML);//關(guān)注時(shí)返回的圖文消息
}
else if (!string.IsNullOrWhiteSpace(requestXML.EventName) requestXML.EventName.ToString().Trim().Equals("CLICK"))
{
SendEventMsg(requestXML);//發(fā)送事件消息
}
break;
case "voice":
SendVoiceMsg(requestXML);//發(fā)送語(yǔ)音消息
break;
case "location"://發(fā)送位置消息
SendMapMsg(requestXML);
break;
default:
break;
}
}
catch (Exception ex)
{
HttpContext.Current.Response.Write(ex.ToString());
}
}
先來(lái)關(guān)注發(fā)送文本消息，SendTextCase(requestXML);//發(fā)送文本消息
/// summary>
/// 發(fā)送文本
/// /summary>
/// param name="requestXML">/param>
private void SendTextCase(RequestXML requestXML)
{
string responseContent = FormatTextXML(requestXML.FromUserName, requestXML.ToUserName, requestXML.Content);
HttpContext.Current.Response.ContentType = "text/xml";
HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
HttpContext.Current.Response.Write(responseContent);
HttpContext.Current.Response.End();
}
FormatTextXML方法制定格式
/// summary>
/// 返回格式化的Xml格式內(nèi)容
/// /summary>
/// param name="p1">公眾號(hào)/param>
/// param name="p2">用戶號(hào)/param>
/// param name="p3">回復(fù)內(nèi)容/param>
/// returns>/returns>
private string FormatTextXML(string p1, string p2, string p3)
{
return "xml>ToUserName>![CDATA[" + p1 + "]]>/ToUserName>FromUserName>![CDATA[" + p2 + "]]>/FromUserName>CreateTime>" + DateTime.Now.Subtract(new DateTime(1970, 1, 1, 8, 0, 0)).TotalSeconds.ToString() + "/CreateTime>MsgType>![CDATA[text]]>/MsgType>Content>![CDATA[" + p3 + "]]>/Content>FuncFlag>1/FuncFlag>/xml>";
}
這樣就能實(shí)現(xiàn)消息的應(yīng)答，如果用戶點(diǎn)擊的按鈕，如下代碼：
case "event"://發(fā)送事件消息
if (!string.IsNullOrWhiteSpace(requestXML.EventName) requestXML.EventName.ToString().Trim().Equals("subscribe"))
{
SendWelComeMsg(requestXML);//關(guān)注時(shí)返回的圖文消息
}
else if (!string.IsNullOrWhiteSpace(requestXML.EventName) requestXML.EventName.ToString().Trim().Equals("CLICK"))
{
SendEventMsg(requestXML);//發(fā)送事件消息
}
break;
/// summary>
/// 發(fā)送響應(yīng)事件消息
/// /summary>
/// param name="requestXML">/param>
private void SendEventMsg(RequestXML requestXML)
{
string keyStr = requestXML.EventKey.ToString();
switch (keyStr)
{
case "mypay":
SendPayDetails(requestXML);//發(fā)送薪資賬單
break;
case "tianqiyubao":
SendWeaterMessage(requestXML);//發(fā)送天氣預(yù)報(bào)
break;
case "kaixinyixiao":
SendKaiXinMessage(requestXML);//發(fā)送開(kāi)心一笑結(jié)果集
break;
case "updateMessage":
SendUpdateMessage(requestXML);//發(fā)送修改信息鏈接
break;
case "yuangonghuodong":
SendYuanGongHuoDong(requestXML);//發(fā)送學(xué)生活動(dòng)
break;
case "yuangongtongzhi":
SendYuanGongTongZhi(requestXML);//發(fā)送員工通知
break;
case "youwenbida":
SendWenti(requestXML);//發(fā)送員工提交問(wèn)題鏈接
break;
case "mywen":
SendWentiList(requestXML);//發(fā)送問(wèn)題列表鏈接
break;
case "PhoneSerices":
SendKeFuMessage(requestXML);//接入客服
break;
default:
String responseContent = String.Empty;
responseContent = FormatTextXML(requestXML.FromUserName, requestXML.ToUserName,"此功能暫未開(kāi)放！敬請(qǐng)期待！");
HttpContext.Current.Response.ContentType = "text/xml";
HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
HttpContext.Current.Response.Write(responseContent);
HttpContext.Current.Response.End();
break;
}
}
SendWelComeMsg(requestXML);//關(guān)注時(shí)返回的圖文消息
/// summary>
/// 發(fā)送關(guān)注時(shí)的圖文消息
/// /summary>
/// param name="requestXML">/param>
private void SendWelComeMsg(RequestXML requestXML)
{
String responseContent = String.Empty;
string newdate = DateTime.Now.Subtract(new DateTime(1970, 1, 1, 8, 0, 0)).TotalSeconds.ToString();
string PUrlfileName = "http://www.deqiaohr.com.cn/weixin/welcome.jpg";
responseContent = string.Format(Message_News_Main, requestXML.FromUserName, requestXML.ToUserName, newdate, "1",
string.Format(Message_News_Item, "歡迎關(guān)注德橋員工服務(wù)中心", "蘇州德橋人力資源創(chuàng)立于2002年...", PUrlfileName, "http://www.deqiaohr.com.cn/weixin/WxGsjianjie.aspx"));
HttpContext.Current.Response.ContentType = "text/xml";
HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
HttpContext.Current.Response.Write(responseContent);
HttpContext.Current.Response.End();
}
Message_News_Main 和Message_News_Item是圖文消息格式化
/// summary>
/// 返回圖文消息主體
/// /summary>
public static string Message_News_Main
{
get
{
return @"xml>
ToUserName>![CDATA[{0}]]>/ToUserName>
FromUserName>![CDATA[{1}]]>/FromUserName>
CreateTime>{2}/CreateTime>
MsgType>![CDATA[news]]>/MsgType>
ArticleCount>{3}/ArticleCount>
Articles>
{4}
/Articles>
/xml> ";
}
}
/// summary>
/// 返回圖文消息項(xiàng)
/// /summary>
public static string Message_News_Item
{
get
{
return @"item>
Title>![CDATA[{0}]]>/Title>
Description>![CDATA[{1}]]>/Description>
PicUrl>![CDATA[{2}]]>/PicUrl>
Url>![CDATA[{3}]]>/Url>
/item>";
}
}
/// summary>
/// 發(fā)送響應(yīng)語(yǔ)音識(shí)別結(jié)果
/// /summary>
/// param name="requestXML">/param>
private void SendVoiceMsg(RequestXML requestXML)
{
string responseContent = FormatTextXML(requestXML.FromUserName, requestXML.ToUserName, "您剛才說(shuō)的語(yǔ)音消息識(shí)別結(jié)果為：" + requestXML.Recognition.ToString());
HttpContext.Current.Response.ContentType = "text/xml";
HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
HttpContext.Current.Response.Write(responseContent);
HttpContext.Current.Response.End();
}
精彩專題分享：ASP.NET微信開(kāi)發(fā)教程匯總，歡迎大家學(xué)習(xí)。
以上就是關(guān)于asp.net微信開(kāi)發(fā)的第二篇，針對(duì)消息應(yīng)答進(jìn)行學(xué)習(xí)，之后會(huì)有更新更多關(guān)于asp.net微信開(kāi)發(fā)的文章，希望大家持續(xù)關(guān)注。
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