asp.net 微信JsSDK

有时间再整理吧

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.IO;
 using Newtonsoft.Json;
 using System.Net;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.Text;
 using System.Security.Cryptography;
 using System.Data;
 using Common;

 namespace LingDing.test
 {
     /// <summary>
     /// WXJSSDK 的摘要说明
     /// </summary>
     public class WXJSSDK
     {
         private string appId;
         private string appSecret;
         private DataTable DT;

         public WXJSSDK(string appId, string appSecret)
         {
             this.appId = appId;
             this.appSecret = appSecret;
         }

         //得到数据包，返回使用页面
         public System.Collections.Hashtable getSignPackage()
         {
             string jsapiTicket = getJsApiTicket();
             string url = HttpContext.Current.Request.Url.ToString();
             string timestamp = Convert.ToString(ConvertDateTimeInt(DateTime.Now));
             string nonceStr = createNonceStr();

             // 这里参数的顺序要按照 key 值 ASCII 码升序排序
             string rawstring = "jsapi_ticket=" + jsapiTicket + "&noncestr=" + nonceStr + "&timestamp=" + timestamp + "&url=" + url + "";

             string signature = SHA1_Hash(rawstring);

             System.Collections.Hashtable signPackage = new System.Collections.Hashtable();
             signPackage.Add("appId", appId);
             signPackage.Add("nonceStr", nonceStr);
             signPackage.Add("timestamp", timestamp);
             signPackage.Add("url", url);
             signPackage.Add("signature", signature);
             signPackage.Add("rawString", rawstring);

             return signPackage;
         }

         //创建随机字符串
         private string createNonceStr()
         {
             int length = ;
             string chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
             string str = "";
             Random rad = new Random();
             for (int i = ; i < length; i++)
             {
                 str += chars.Substring(rad.Next(, chars.Length - ), );
             }
             return str;
         }

         //得到ticket 如果文件里时间 超时则重新获取
         private string getJsApiTicket()
         {
             //这里我从数据库读取
             DT = new DAL.FreeBase().TranSQLGetTable("select jsapi_ticket,ticket_expires from tokens where ID=1");
             int expire_time = (int)DT.Rows[]["ticket_expires"];
             string ticket = DT.Rows[]["jsapi_ticket"].ToString();
             string accessToken = GetTokenName(); //getAccessToken();//获取系统的全局token
             if (expire_time < ConvertDateTimeInt(DateTime.Now))
             {
                 string url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=" + accessToken + "";
                 Jsapi api = JsonConvert.DeserializeObject<Jsapi>(httpGet(url));
                 ticket = api.ticket;
                 if (ticket != "")
                 {
                     expire_time = ConvertDateTimeInt(DateTime.Now) + ;
                     //存入数据库操作
                     new DAL.FreeBase().TranSQL("update tokens set jsapi_ticket='" + ticket + "',ticket_expires='" + expire_time + "' where ID=1");
                 }
             }
             return ticket;
         }

         string GetTokenName()//得到tokenname
         {
             //string projectname = "类名:" + System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.FullName;
             string projectname = System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.FullName;
             string classname = projectname.Substring(projectname.IndexOf('.') + );
             string tokenname = GetConfig.gettoken(classname);
             return tokenname;
         }
         ////得到accesstoken 如果文件里时间 超时则重新获取
         //private string getAccessToken()
         //{
         //    // access_token 应该全局存储与更新，以下代码以写入到文件中做示例
         //    string access_token = "";
         //    string path = HttpContext.Current.Server.MapPath(@"/weixin/access_token.json");
         //    FileStream file = new FileStream(path, FileMode.Open);
         //    var serializer = new DataContractJsonSerializer(typeof(AccToken));
         //    AccToken readJSTicket = (AccToken)serializer.ReadObject(file);
         //    file.Close();
         //    if (readJSTicket.expires_in < ConvertDateTimeInt(DateTime.Now))
         //    {
         //        string url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appId + "&secret=" + appSecret + "";

         //        AccToken iden = Desrialize<AccToken>(new AccToken(), httpGet(url));

         //        access_token = iden.access_token;
         //        if (access_token != "")
         //        {
         //            iden.expires_in = ConvertDateTimeInt(DateTime.Now) + 7000;
         //            iden.access_token = access_token;

         //            string json = Serialize<AccToken>(iden);
         //            StreamWriterMetod(json, path);
         //        }
         //    }
         //    else
         //    {
         //        access_token = readJSTicket.access_token;
         //    }
         //    return access_token;
         //}

         //发起一个http请球，返回值
         private string httpGet(string url)
         {
             try
             {
                 WebClient MyWebClient = new WebClient();
                 MyWebClient.Credentials = CredentialCache.DefaultCredentials;//获取或设置用于向Internet资源的请求进行身份验证的网络凭据
                 Byte[] pageData = MyWebClient.DownloadData(url); //从指定网站下载数据
                 string pageHtml = System.Text.Encoding.Default.GetString(pageData);  //如果获取网站页面采用的是GB2312，则使用这句              

                 return pageHtml;
             }
             catch (WebException webEx)
             {
                 Console.WriteLine(webEx.Message.ToString());
                 return null;
             }
         }

         //SHA1哈希加密算法
         public string SHA1_Hash(string str_sha1_in)
         {
             SHA1 sha1 = new SHA1CryptoServiceProvider();
             byte[] bytes_sha1_in = System.Text.UTF8Encoding.Default.GetBytes(str_sha1_in);
             byte[] bytes_sha1_out = sha1.ComputeHash(bytes_sha1_in);
             string str_sha1_out = BitConverter.ToString(bytes_sha1_out);
             str_sha1_out = str_sha1_out.Replace("-", "").ToLower();
             return str_sha1_out;
         }

         /// <summary>
         /// StreamWriter写入文件方法
         /// </summary>
         private void StreamWriterMetod(string str, string patch)
         {
             try
             {
                 FileStream fsFile = new FileStream(patch, FileMode.OpenOrCreate);
                 StreamWriter swWriter = new StreamWriter(fsFile);
                 swWriter.WriteLine(str);
                 swWriter.Close();
             }
             catch (Exception e)
             {
                 throw e;
             }
         }

         /// <summary>
         /// 将c# DateTime时间格式转换为Unix时间戳格式
         /// </summary>
         /// <param name="time">时间</param>
         /// <returns>double</returns>
         public int ConvertDateTimeInt(System.DateTime time)
         {
             int intResult = ;
             System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(, , ));
             intResult = Convert.ToInt32((time - startTime).TotalSeconds);
             return intResult;
         }
     }
     //创建Json序列化 及反序列化类目
     #region
     //创建JSon类 保存文件 jsapi_ticket.json
     public class JSTicket
     {

         public string jsapi_ticket { get; set; }

         public double expire_time { get; set; }
     }
     //创建 JSon类 保存文件 access_token.json  

     public class AccToken
     {

         public string access_token { get; set; }

         public double expires_in { get; set; }
     }

     //创建从微信返回结果的一个类 用于获取ticket  

     public class Jsapi
     {

         public int errcode { get; set; }

         public string errmsg { get; set; }

         public string ticket { get; set; }

         public string expires_in { get; set; }
     }
     #endregion
 }