Restful wcf 微信公众平台折腾

成为代码民工多年了，一直在别人的帖子下成长，想想自己也应该写写东西回报大家了。

直接代码说话：

1.因为成为开发者，腾讯需要一个url，这个url又要能get,又能post.所以原来的RESTful WCF应该作如下标记：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.IO;

namespace HCWcfLib
{
    [ServiceContract]
    interface IWeChat
    {
        [OperationContract]
        [WebInvoke(UriTemplate = "/Token", Method = "*", BodyStyle = WebMessageBodyStyle.Bare)]
        Stream Token();
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel.Activation;
using System.Web.Security;
using System.IO;
using System.ServiceModel.Web;
using System.Web;
using System.Xml.Linq;
using System.ServiceModel;

namespace HCWcfLib
{
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class WeChatService : IWeChat
    {

        #region IWeChat 成员

        public Stream Token()
        {
            IncomingWebRequestContext request = WebOperationContext.Current.IncomingRequest;
            var method = request.Method;
            string result = "";
            switch (method)
            {
                case "POST":
                    string postStr = OperationContext.Current.RequestContext.RequestMessage.ToString();//获取post数据

                    //System.IO.Stream s = HttpContext.Current.Request.InputStream;
                    //byte[] b = new byte[s.Length];
                    //s.Read(b, 0, (int)s.Length);
                    //string postStr = System.Text.Encoding.UTF8.GetString(b);
                    WriteLog("post data is" + postStr + " at " + DateTime.Now.ToShortDateString() + "  " + DateTime.Now.ToLongTimeString());
                    if (!string.IsNullOrEmpty(postStr))
                    {
                        WriteLog("response " + postStr + " at " + DateTime.Now.ToShortDateString() + "  " + DateTime.Now.ToLongTimeString());
                        result = DoPost(postStr);
                    }
                    break;
                case "DELETE":
                    break;
                case "PUT":
                    break;
                default:
                    WriteLog("token get request at:" + DateTime.Now.ToShortDateString());
                    result = doGet(request);
                    break;
            }

            //HttpContext.Current.ApplicationInstance.CompleteRequest();//推送...不然微信平台无法验证token
            byte[] resultBytes = Encoding.UTF8.GetBytes(result);
            return new MemoryStream(resultBytes);
        }

        #endregion

        public string doGet(IncomingWebRequestContext request)
        {
            string result = "";
            string token = "yunjubao";
            var signature = request.UriTemplateMatch.QueryParameters["signature"];
            var timestamp = request.UriTemplateMatch.QueryParameters["timestamp"];
            var nonce = request.UriTemplateMatch.QueryParameters["nonce"];
            var echostr = request.UriTemplateMatch.QueryParameters["echoStr"];
            string[] tempArray = { token, timestamp, nonce };
            Array.Sort(tempArray);
            string tmpStr = string.Join("", tempArray);
            tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
            tmpStr = tmpStr.ToLower();
            if (tmpStr == signature)
            {
                result = echostr;
            }
            else
            {
                result = "invalidate parameter";
            }

            return result;
        }

        public string DoPost(string postStr)
        {
            string result = "";
            try
            {
                var xDoc = XDocument.Parse(postStr);
                var q = (from c in xDoc.Elements() select c).ToList();

                var msgType = q.Elements("MsgType").First().Value; // 获取信息内容的类型  
                var _tmpContent = "";

                #region =============== 处理MsgType:text =====================
                if (0 == string.Compare("text", msgType, true))
                {
                    var model = new
                    {
                        ToUserName = q.Elements("ToUserName").First().Value,
                        FromUserName = q.Elements("FromUserName").First().Value,
                        CreateTime = q.Elements("CreateTime").First().Value,

                        MsgType = q.Elements("MsgType").First().Value,
                        Content = ("" + q.Elements("Content").First().Value).Trim(),
                        MsgId = q.Elements("MsgId").First().Value
                    };

                    if (false == string.IsNullOrWhiteSpace(model.Content))
                    {
                        _tmpContent = "使用帮助说明：
------------------------
"
                                     + "常用命令：
"
                                     + "1、查看案例;
"
                                     + "2、联系方式;
"
                                     + "3、帮助或help;
"
                                     + "------------------------
如果喜欢就推荐给您的朋友，
我们的微信号：yunjubao";



                        if (false == string.IsNullOrWhiteSpace(_tmpContent))
                        {
                            var textTpl = "<xml>"
                                        + "<ToUserName><![CDATA[{0}]]></ToUserName>"
                                        + "<FromUserName><![CDATA[{1}]]></FromUserName>"
                                        + "<CreateTime>{2}</CreateTime>"
                                        + "<MsgType><![CDATA[{3}]]></MsgType>"
                                        + "<Content><![CDATA[{4}]]></Content>"
                                        + "</xml>";


                            result = string.Format(textTpl, model.FromUserName, model.ToUserName, ConvertDateTimeInt(DateTime.Now), "text", _tmpContent);
                        }


                    }
                }
                #endregion

            }
            catch (Exception ex)
            {
                WriteLog(ex.ToString());
            }
            return result;

        }

        private int ConvertDateTimeInt(System.DateTime time)
        {
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
            return (int)(time - startTime).TotalSeconds;
        }
        private void WriteLog(string strMemo)
        {
            string filename = "E:/WEBHOME/logs/log.txt";
            if (!System.IO.Directory.Exists("E:/WEBHOME/logs/"))
                System.IO.Directory.CreateDirectory("E:/WEBHOME/logs/");
            System.IO.StreamWriter sr = null;
            try
            {
                if (!System.IO.File.Exists(filename))
                {
                    sr = System.IO.File.CreateText(filename);
                }
                else
                {
                    sr = System.IO.File.AppendText(filename);
                }
                sr.WriteLine(strMemo);
            }
            catch
            {
            }
            finally
            {
                if (sr != null)
                    sr.Close();
            }
        }
    }
}

这里参考了

2.同时，我做了一个创建菜单的androd客户端，如有需要可在https://github.com/tuolin2013/CreatWeChatMenu 下载，更改自己的appid和appsecret.