微信公众帐号消息帐号 学习
未来是属于微信这种产品的时代。老板每次都兴奋地跟我提起他是如何如何的好。
我之前以为微信只是QQ的手机语音版，没想到腾讯竟然有如此大的勇气突破落后的生态体制，大力扶持微信，而不遭到内部固有生态的排他影响。20世纪经评网说，这是腾讯的“光荣革命”。关于他们的表述，我是完全认同的。
以下是前几天做的微信消息接口：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Xml;
using System.IO;
using System.Text;
using System.Collections.Generic;
using System.Net;
namespace OAuth2Demo
{
public partial class WebForm1 : System.Web.UI.Page
{
const string Token = "token"; //与那边填写的token一致
protected void Page_Load(object sender, EventArgs e)
{
string postStr = "";
if (Request.HttpMethod.ToLower() == "post")
{
Stream s = System.Web.HttpContext.Current.Request.InputStream;
byte[] b = new byte[s.Length];
s.Read(b, 0, (int)s.Length);
postStr = Encoding.UTF8.GetString(b);
if (!string.IsNullOrEmpty(postStr))
{
//封装请求类
XmlDocument doc = new XmlDocument();
doc.LoadXml(postStr);
XmlElement rootElement = doc.DocumentElement;
XmlNode MsgType = rootElement.SelectSingleNode("MsgType");
RequestXML requestXML = new RequestXML();
requestXML.ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText;
requestXML.FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText;
requestXML.CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText;
requestXML.MsgType = MsgType.InnerText;
if (requestXML.MsgType == "text")
{
requestXML.Content = rootElement.SelectSingleNode("Content").InnerText;
}
else if (requestXML.MsgType == "location")
{
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;
}
else if (requestXML.MsgType == "image")
{
requestXML.PicUrl = rootElement.SelectSingleNode("PicUrl").InnerText;
}
//回复消息
ResponseMsg(requestXML);
}
}
else
{
Valid();
}
}
/// <summary>
/// 验证微信签名
/// </summary>
/// * 将token、timestamp、nonce三个参数进行字典序排序
/// * 将三个参数字符串拼接成一个字符串进行sha1加密
/// * 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。
/// <returns></returns>
private bool CheckSignature()
{
string signature = Request.QueryString["signature"];
string timestamp = Request.QueryString["timestamp"];
string nonce = Request.QueryString["nonce"];
string[] ArrTmp = { Token, timestamp, nonce };
Array.Sort(ArrTmp); //字典排序
string tmpStr = string.Join("", ArrTmp);
tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
tmpStr = tmpStr.ToLower();
if (tmpStr == signature)
{
return true;
}
else
{
return false;
}
}
private void Valid()
{
string echoStr = Request.QueryString["echoStr"];
if (CheckSignature())
{
if (!string.IsNullOrEmpty(echoStr))
{
Response.Write(echoStr);
Response.End();
}
}
}
/// <summary>
/// 回复消息(微信信息返回)
/// </summary>
/// <param name="weixinXML"></param>
private void ResponseMsg(RequestXML requestXML)
{
try
{
string resxml = "";
if (requestXML.MsgType == "text")
{
resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[正在建设中，稍等时日，更多精彩……]]></Content><FuncFlag>0</FuncFlag></xml>";
}
else if (requestXML.MsgType == "location")
{
string city = GetMapInfo(requestXML.Location_X, requestXML.Location_Y);
if (city == "0")
{
resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[Sorry，没有找到" + city + " 的相关产品信息]]></Content><FuncFlag>0</FuncFlag></xml>";
}
else
{
resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[Sorry，这是 " + city + " 的产品信息：圈圈叉叉]]></Content><FuncFlag>0</FuncFlag></xml>";
}
}
else if (requestXML.MsgType == "image")
{
//返回10以内条
int size = 10;
resxml = "<xml><ToUserName><![CDATA[" + requestXML.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + requestXML.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[news]]></MsgType><Content><![CDATA[]]></Content><ArticleCount>" + size + "</ArticleCount><Articles>";
List<string> list = new List<string>();
//假如有20条查询的返回结果
for (int i = 0; i < 20; i++)
{
list.Add("1");
}
string[] piclist = new string[] { "/Abstract_Pencil_Scribble_Background_Vector_main.jpg", "/balloon_tree.jpg", "/bloom.jpg", "/colorful_flowers.jpg", "/colorful_summer_flower.jpg", "/fall.jpg", "/fall_tree.jpg", "/growing_flowers.jpg", "/shoes_illustration.jpg", "/splashed_tree.jpg" };
for (int i = 0; i < size && i < list.Count; i++)
{
resxml += "<item><Title><![CDATA[沈阳-黑龙江]]></Title><Description><![CDATA[元旦特价：￥300 市场价：￥400]]></Description><PicUrl><![CDATA[" + "http://www.hougelou.com" + piclist[i] + "]]></PicUrl><Url><![CDATA[http://www.hougelou.com]]></Url></item>";
}
resxml += "</Articles><FuncFlag>1</FuncFlag></xml>";
}
WriteTxt(resxml);
Response.Write(resxml);
}
catch (Exception ex)
{
WriteTxt("异常："+ex.Message+"Struck:"+ex.StackTrace.ToString());
}
}
/// <summary>
/// unix时间转换为datetime
/// </summary>
/// <param name="timeStamp"></param>
/// <returns></returns>
private DateTime UnixTimeToTime(string timeStamp)
{
DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
long lTime = long.Parse(timeStamp + "0000000");
TimeSpan toNow = new TimeSpan(lTime);
return dtStart.Add(toNow);
}
/// <summary>
/// datetime转换为unixtime
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
private int ConvertDateTimeInt(System.DateTime time)
{
System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
return (int)(time - startTime).TotalSeconds;
}
/// <summary>
/// 记录bug，以便调试
/// </summary>
/// <returns></returns>
public bool WriteTxt(string str)
{
try
{
FileStream fs = new FileStream(Server.MapPath("/bugLog.txt"), FileMode.Append);
StreamWriter sw = new StreamWriter(fs);
//开始写入
sw.WriteLine(str);
//清空缓冲区
sw.Flush();
//关闭流
sw.Close();
fs.Close();
}
catch (Exception)
{
return false;
}
return true;
}
/// <summary>
/// 调用百度地图，返回坐标信息
/// </summary>
/// <param name="y">经度</param>
/// <param name="x">纬度</param>
/// <returns></returns>
public string GetMapInfo(string x, string y)
{
try
{
string res = string.Empty;
string parame = string.Empty;
string url = "http://maps.googleapis.com/maps/api/geocode/xml";
parame = "latlng=" + x + "," + y + "&language=zh-CN&sensor=false";//此key为个人申请
res = webRequestPost(url, parame);
XmlDocument doc = new XmlDocument();
doc.LoadXml(res);
XmlElement rootElement = doc.DocumentElement;
string Status = rootElement.SelectSingleNode("status").InnerText;
if (Status == "OK")
{
//仅获取城市
XmlNodeList xmlResults = rootElement.SelectSingleNode("/GeocodeResponse").ChildNodes;
for (int i = 0; i < xmlResults.Count; i++)
{
XmlNode childNode = xmlResults[i];
if (childNode.Name == "status")
{
continue;
}
string city = "0";
for (int w = 0; w < childNode.ChildNodes.Count; w++)
{
for (int q = 0; q < childNode.ChildNodes[w].ChildNodes.Count; q++)
{
XmlNode childeTwo = childNode.ChildNodes[w].ChildNodes[q];
if (childeTwo.Name == "long_name")
{
city = childeTwo.InnerText;
}
else if (childeTwo.InnerText == "locality")
{
return city;
}
}
}
return city;
}
}
}
catch (Exception ex)
{
WriteTxt("map异常:" + ex.Message.ToString() + "Struck:" + ex.StackTrace.ToString());
return "0";
}
return "0";
}
/// <summary>
/// Post 提交调用抓取
/// </summary>
/// <param name="url">提交地址</param>
/// <param name="param">参数</param>
/// <returns>string</returns>
public string webRequestPost(string url, string param)
{
byte[] bs = System.Text.Encoding.UTF8.GetBytes(param);
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url+"?"+param);
req.Method = "Post";
req.Timeout = 120 * 1000;
req.ContentType = "application/x-www-form-urlencoded;";
req.ContentLength = bs.Length;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(bs, 0, bs.Length);
reqStream.Flush();
}
using (WebResponse wr = req.GetResponse())
{
//在这里对接收到的页面内容进行处理
Stream strm = wr.GetResponseStream();
StreamReader sr = new StreamReader(strm, System.Text.Encoding.UTF8);
string line;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
while ((line = sr.ReadLine()) != null)
{
sb.Append(line + System.Environment.NewLine);
}
sr.Close();
strm.Close();
return sb.ToString();
}
}
}
//微信请求类
public class RequestXML
{
private string toUserName;
/// <summary>
/// 消息接收方微信号，一般为公众平台账号微信号
/// </summary>
public string ToUserName
{
get { return toUserName; }
set { toUserName = value; }
}
private string fromUserName;
/// <summary>
/// 消息发送方微信号
/// </summary>
public string FromUserName
{
get { return fromUserName; }
set { fromUserName = value; }
}
private string createTime;
/// <summary>
/// 创建时间
/// </summary>
public string CreateTime
{
get { return createTime; }
set { createTime = value; }
}
private string msgType;
/// <summary>
/// 信息类型 地理位置:location,文本消息:text,消息类型:image
/// </summary>
public string MsgType
{
get { return msgType; }
set { msgType = value; }
}
private string content;
/// <summary>
/// 信息内容
/// </summary>
public string Content
{
get { return content; }
set { content = value; }
}
private string location_X;
/// <summary>
/// 地理位置纬度
/// </summary>
public string Location_X
{
get { return location_X; }
set { location_X = value; }
}
private string location_Y;
/// <summary>
/// 地理位置经度
/// </summary>
public string Location_Y
{
get { return location_Y; }
set { location_Y = value; }
}
private string scale;
/// <summary>
/// 地图缩放大小
/// </summary>
public string Scale
{
get { return scale; }
set { scale = value; }
}
private string label;
/// <summary>
/// 地理位置信息
/// </summary>
public string Label
{
get { return label; }
set { label = value; }
}
private string picUrl;
/// <summary>
/// 图片链接，开发者可以用HTTP GET获取
/// </summary>
public string PicUrl
{
get { return picUrl; }
set { picUrl = value; }
}
}
}
