Detailed explanation of customer service interface examples for WeChat public account development (with code)

这篇文章详解微信公众号开发客服接口实例（附代码），需要的朋友可以参考下

最近，开发微信公众号，负责开发客服功能，这里简单记录下：

Kf_account.cs代码:

 public partial class Kf_account : Form
  {
    private readonly DataTable adt_user = new DataTable();
    private readonly string as_INIFile = Application.StartupPath + "\\user.ini";
 
    public Kf_account()
    {
      BindUser();
    }
 
    private void BindUser()
    {
      if (!File.Exists(as_INIFile))
      {
        var str = new StringBuilder();
        str.Append(";内容由程序自动生成，请不要修改此文件内容\r\n");
        str.Append("[total]\r\n");
        str.Append("total=\r\n");
        str.Append("[count]\r\n");
        str.Append("count=\r\n");
        str.Append("[user]\r\n");
        //StreamWriter sw = default(StreamWriter);
        //sw = File.CreateText(ls_INIFile);
        //sw.WriteLine(str.ToString());
        //sw.Close();
        File.WriteAllText(as_INIFile, str.ToString(), Encoding.Unicode);
        File.SetAttributes(as_INIFile, FileAttributes.Hidden);
      }
      CheckForIllegalCrossThreadCalls = false;
      InitializeComponent();
      Icon = Resource1.ico;
      lkl_num.Text = INIFile.ContentValue("total", "total", as_INIFile);
      lkl_num_c.Text = INIFile.ContentValue("count", "count", as_INIFile);
      pictureBox1.Visible = true;
      var sr = new StreamReader(as_INIFile, Encoding.Unicode);
      String line;
      int li_count = 0;
      adt_user.Columns.Clear();
      adt_user.Columns.Add("username", Type.GetType("System.String"));
      adt_user.Columns.Add("openid", Type.GetType("System.String"));
      while ((line = sr.ReadLine()) != null)
      {
        li_count++;
        if (li_count > 6)
        {
          line = SysVisitor.Current.GetFormatStr(line);
          DataRow newRow;
          newRow = adt_user.NewRow();
          newRow["username"] = line.Substring(0, line.LastIndexOf('='));
          newRow["openid"] = line.Substring(line.LastIndexOf('=') + 1);
          adt_user.Rows.Add(newRow);
        }
      }
      sr.Close();
      dataGridView1.AutoGenerateColumns = false;
      dataGridView1.DataSource = adt_user;
      //dataGridView1.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.DisplayedCells;
      lbl_count.Text = "共" + (li_count - 6) + "行";
      pictureBox1.Visible = false;
    }
 
    private void btn_GetUser_Click(object sender, EventArgs e)
    {
      if (MessageBox.Show(@"拉取用户信息的速度取决于你的关注数与网络速度，
可能需要几分钟甚至更长时间。
使用此功能将消耗大量用户管理接口配额。
要继续此操作吗？",
        "提示：", MessageBoxButtons.YesNo) == DialogResult.No)
      {
        return;
      }
      var thr = new Thread(Get_user_list);
      thr.Start();
    }
 
    private void Get_user_list()
    {
      File.Delete(as_INIFile);
      var str = new StringBuilder();
      str.Append(";内容由程序自动生成，请不要修改此文件内容\r\n");
      str.Append("[total]\r\n");
      str.Append("total=\r\n");
      str.Append("[count]\r\n");
      str.Append("count=\r\n");
      str.Append("[user]\r\n");
      File.WriteAllText(as_INIFile, str.ToString(), Encoding.Unicode);
      File.SetAttributes(as_INIFile, FileAttributes.Hidden);
 
      string ls_appid = INIFile.ContentValue("weixin", "Appid");
      string ls_secret = INIFile.ContentValue("weixin", "AppSecret");
      string access_token = "";
      string menu = "";
      if (ls_appid.Length != 18 || ls_secret.Length != 32)
      {
        MessageBox.Show("你的Appid或AppSecret不对，请检查后再操作");
        return;
      }
      access_token = SysVisitor.Current.Get_Access_token(ls_appid, ls_secret);
      if (access_token == "")
      {
        MessageBox.Show("Appid或AppSecret不对，请检查后再操作");
        return;
      }
      menu = SysVisitor.Current.GetPageInfo("https://api.weixin.qq.com/cgi-bin/user/get?access_token=" + access_token);
      if (menu.Substring(2, 7) == "errcode")
      {
        MessageBox.Show("拉取失败，返回消息：\r\n" + menu);
      }
 
      JObject json = JObject.Parse(menu);
      lkl_num.Text = json["total"].ToString();
      INIFile.SetINIString("total", "total", lkl_num.Text, as_INIFile);
      lkl_num_c.Text = json["count"].ToString();
      INIFile.SetINIString("count", "count", lkl_num_c.Text, as_INIFile);
      int li_count = int.Parse(json["count"].ToString());
      btn_GetUser.Enabled = false;
      pictureBox1.Visible = true;
      FileStream fs = null;
      Encoding encoder = Encoding.Unicode;
      for (int i = 0; i < li_count; i++)
      {
        string openid, username;
        openid = Get_UserName(json["data"]["openid"][i].ToString());
        username = json["data"]["openid"][i].ToString();
        //INIFile.SetINIString("user", openid, username, as_INIFile);
        byte[] bytes = encoder.GetBytes(openid + "=" + username + " \r\n");
        fs = File.OpenWrite(as_INIFile);
        //设定书写的開始位置为文件的末尾 
        fs.Position = fs.Length;
        //将待写入内容追加到文件末尾 
        fs.Write(bytes, 0, bytes.Length);
        fs.Close();
        lab_nums.Text = "已拉取" + i + "个，还剩" + (li_count - i) + "个，请耐心等待";
      }
      lab_nums.Text = "";
      //BindUser();
      btn_GetUser.Enabled = true;
      pictureBox1.Visible = false;
      MessageBox.Show("已全部拉取完毕,请重新打开该窗口");
    }
 
    /// <summary>
    ///   获取用户信息详情，返回json
    /// </summary>
    ///<param name="as_openid">
    private string Get_User(string as_openid)
    {
      string ls_json = "";
      string access_token = "";
      access_token = SysVisitor.Current.Get_Access_token();
      ls_json =
        SysVisitor.Current.GetPageInfo("https://api.weixin.qq.com/cgi-bin/user/info?access_token=" + access_token + "&openid=" + as_openid + "&lang=zh_CN");
      return ls_json;
    }
 
    /// <summary>
    ///   获取用户用户的昵称
    /// </summary>
    private string Get_UserName(string as_openid)
    {
      string ls_json = "";
      ls_json = Get_User(as_openid);
      string username = "";
      JObject json = JObject.Parse(ls_json);
      username = json["nickname"].ToString();
      username = SysVisitor.Current.GetFormatStr(username);
      return username;
    }
 
    private void btn_search_Click(object sender, EventArgs e)
    {
      string username = txt_search.Text.Trim();
      if (string.IsNullOrWhiteSpace(username))
      {
        return;
      }
      DataRow[] datarows = adt_user.Select("username like &#39;%" + username + "%&#39;");
 
      var ldt = new DataTable();
      ldt.Columns.Clear();
      ldt.Columns.Add("username", Type.GetType("System.String"));
      ldt.Columns.Add("openid", Type.GetType("System.String"));
      ldt = ToDataTable(datarows);
      try
      {
        lbl_count.Text = ldt.Rows.Count.ToString();
      }
      catch
      {
      }
      dataGridView1.AutoGenerateColumns = false;
      dataGridView1.DataSource = ldt;
    }
 
    public DataTable ToDataTable(DataRow[] rows)
    {
      if (rows == null || rows.Length == 0) return null;
      DataTable tmp = rows[0].Table.Clone(); // 复制DataRow的表结构 
      foreach (DataRow row in rows)
        tmp.Rows.Add(row.ItemArray); // 将DataRow添加到DataTable中 
      return tmp;
    }
 
    private void dataGridView1_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
    {
      try
      {
        SysVisitor.Current.Wx_openid =
          dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex].Cells[1].Value.ToString();
        SysVisitor.Current.Wx_username =
          dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex].Cells[0].Value.ToString();
        //MessageBox.Show(str);
        grb_chat.Enabled = true;
        grb_chat.Text = SysVisitor.Current.Wx_username;
      }
      catch
      {
 
      }
      webBrowser_msg.DocumentText = "";
      string url = string.Format("https://api.weixin.qq.com/cgi-bin/customservice/getrecord?access_token={0}",
        SysVisitor.Current.Get_Access_token());
      string ls_text = @"{";
      ls_text += "\"starttime\" : " + DateTime.Now.AddDays(-3).Ticks + ",";
      ls_text += "\"endtime\" : " + DateTime.Now.Ticks + ",";
      ls_text += "\"openid\" : \"" + SysVisitor.Current.Wx_openid + "\",";
      ls_text += "\"pagesize\" : 1000,";
      ls_text += "\"pageindex\" : 1,";
      ls_text += "}";
      string ls_history = SysVisitor.Current.PostPage(url, ls_text);
      webBrowser_msg.DocumentText = ls_history;
    }
 
    private void btn_send_Click(object sender, EventArgs e)
    {
      string ls_msg = richTextBox_msg.Text;
      string ls_text = @"{";
      ls_text += "\"touser\":\"" + SysVisitor.Current.Wx_openid + "\",";
      ls_text += "\"msgtype\":\"text\",";
      ls_text += "\"text\":";
      ls_text += "{";
      ls_text += "\"content\":\"" + ls_msg + "\"";
      ls_text += "}";
      ls_text += "}";
      string url = string.Format("https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token={0}",
        SysVisitor.Current.Get_Access_token());
      string ls_isright = SysVisitor.Current.PostPage(url, ls_text);
 
      webBrowser_msg.DocumentText += "
" + ls_isright + "

"; } private void btn_addkf_Click(object sender, EventArgs e) { string url = string.Format("https://api.weixin.qq.com/customservice/kfaccount/add?access_token={0}", SysVisitor.Current.Get_Access_token()); //客服账号 设置 xxx@你的公众号 这样的格式才是正确的哟。 string ls_text = "{"; ls_text += "\"kf_account\":test2@gz-sisosoft,"; ls_text += "\"nickname\":\"客服2\","; ls_text += "\"password\":\"12345\","; ls_text += "}"; string ls_kf = @"{ &#39;kf_account&#39; : &#39;test1@gz-sisosoft&#39;, &#39;nickname&#39; : &#39;客服1&#39;, &#39;password&#39; : &#39;123456&#39;, }"; string ls_isok = SysVisitor.Current.PostPage(url, ls_text); MessageBox.Show(ls_isok); } private void Kf_account_Load(object sender, EventArgs e) { } }

SysVisitor.cs代码:

class SysVisitor
 {
   private static SysVisitor visit = null;
   public static SysVisitor Current
   {
     get
     {
       if (visit == null)
         visit = new SysVisitor();
 
       return visit;
     }
   }
   /// <summary>
   /// 获取access_token
   /// </summary>
   ///<param name="appid">appid
   ///<param name="secret">appsecret
   /// <returns></returns>
   public string Get_Access_token(string appid, string appsecret)
   {
     string secondappid = INIFile.ContentValue("weixin", "secondappid");
     if (appid.ToLower() == secondappid.ToLower())
     {
       string ls_time = INIFile.ContentValue("weixin", "gettime");
       Decimal ldt;
       try
       {
         ldt = Convert.ToDecimal(ls_time);
         if (Convert.ToDecimal(DateTime.Now.ToString("yyyyMMddHHmmss")) - ldt < 7100)//每两个小时刷新一次
         {
           return INIFile.ContentValue("weixin", "access_token");
         }
       }
       catch
       { }
     }
     string ls_appid = appid.Replace(" ", "");
     string ls_secret = appsecret.Replace(" ", "");
     string access_token = "";
     string url = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", ls_appid, ls_secret);
     string json_access_token = GetPageInfo(url);
     //DataTable dt = Json.JsonToDataTable(json_access_token);
     DataTable dt = JsonHelper.JsonToDataTable(json_access_token);
     try
     {
       access_token = dt.Rows[0]["access_token"].ToString();
     }
     catch
     {
       return "";
     }
     INIFile.SetINIString("weixin", "gettime", DateTime.Now.ToString("yyyyMMddHHmmss"));
     INIFile.SetINIString("weixin", "access_token", access_token);
     INIFile.SetINIString("weixin", "secondappid", ls_appid);
 
     return access_token;
   }
 
   /// <summary>
   /// 获取access_token
   /// </summary>
   public string Get_Access_token()
   {
     string ls_appid = INIFile.ContentValue("weixin", "Appid");
     string ls_secret = INIFile.ContentValue("weixin", "AppSecret");
     return Get_Access_token(ls_appid, ls_secret);
   }
 
   /// <summary>
   /// Get方法请求url并接收返回消息
   /// </summary>
   ///<param name="strUrl">Url地址
   /// <returns></returns>
   public string GetPageInfo(string url)
   {
     HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
     HttpWebResponse response = (HttpWebResponse)request.GetResponse();
 
     string ret = string.Empty;
     Stream s;
     string StrDate = "";
     string strValue = "";
 
     if (response.StatusCode == HttpStatusCode.OK)
     {
       s = response.GetResponseStream();
       ////在这儿处理返回的文本
       StreamReader Reader = new StreamReader(s, Encoding.UTF8);
 
       while ((StrDate = Reader.ReadLine()) != null)
       {
         strValue += StrDate + "\r\n";
       }
       //strValue = Reader.ReadToEnd();
     }
     return strValue;
   }
 
   /// <summary>
   /// Post方法
   /// </summary>
   ///<param name="posturl">URL
   ///<param name="postData">Post数据
   /// <returns></returns>
   public string PostPage(string posturl, string postData)
   {
     Stream outstream = null;
     Stream instream = null;
     StreamReader sr = null;
     HttpWebResponse response = null;
     HttpWebRequest request = null;
     Encoding encoding = Encoding.UTF8;
     byte[] data = encoding.GetBytes(postData);
     // 准备请求...
     try
     {
       // 设置参数
       request = WebRequest.Create(posturl) as HttpWebRequest;
       CookieContainer cookieContainer = new CookieContainer();
       request.CookieContainer = cookieContainer;
       request.AllowAutoRedirect = true;
       request.Method = "POST";
       request.ContentType = "application/x-www-form-urlencoded";
       request.ContentLength = data.Length;
       outstream = request.GetRequestStream();
       outstream.Write(data, 0, data.Length);
       outstream.Close();
       //发送请求并获取相应回应数据
       response = request.GetResponse() as HttpWebResponse;
       //直到request.GetResponse()程序才开始向目标网页发送Post请求
       instream = response.GetResponseStream();
       sr = new StreamReader(instream, encoding);
       //返回结果网页（html）代码
       string content = sr.ReadToEnd();
       string err = string.Empty;
       return content;
     }
     catch (Exception ex)
     {
       string err = ex.Message;
       return string.Empty;
     }
   }
 
   /// <summary>
   /// 格式化字符串
   /// </summary>
   ///<param name="str">
   /// <returns></returns>
   public string GetFormatStr(string str)
   {
     if ("" == str)
       return "";
     else
     {
       str = str.Trim();
       str = str.Replace("&#39;", "&#39;");
       str = str.Replace("〈", "<");
       str = str.Replace("〉", ">");
       str = str.Replace("，", ",");
       return str;
     }
   }
   string ls_username = "";
   /// <summary>
   /// 用户名
   /// </summary>
   public string Wx_username
   {
     get
     {
       return ls_username;
     }
     set
     {
       ls_username = value;
     }
   }
   string ls_openid = "";
   /// <summary>
   /// Openid
   /// </summary>
   public string Wx_openid
   {
     get
     {
       return ls_openid;
     }
     set
     {
       ls_openid = value;
     }
   }
 }

INIFile.cs代码:

class INIFile
  {
    ///// <summary>
    ///// 设置INI文件参数
    ///// </summary>
    /////<param name="section">INI文件中的段落
    /////<param name="key">INI文件中的关键字
    /////<param name="val">INI文件中关键字的数值
    /////<param name="filePath">INI文件的完整的路径和名称
    ///// <returns></returns>
    //[DllImport("kernel32")]
    //private static extern long WritePrivateProfileString(
    //  string section, string key, string val, string filePath);
 
    ///// <summary>
    ///// 获取INI文件参数
    ///// </summary>
    /////<param name="section">INI文件中的段落名称
    /////<param name="key">INI文件中的关键字
    /////<param name="def">无法读取时候时候的缺省数值
    /////<param name="retVal">读取数值
    /////<param name="size">数值的大小
    /////<param name="filePath">INI文件的完整路径和名称
    //[DllImport("kernel32")]
    //private static extern int GetPrivateProfileString(
    //  string section, string key, string def, StringBuilder retVal, int size, string filePath);
 
    //static string gs_FileName = System.AppDomain.CurrentDomain.BaseDirectory + "Config.ini";
 
    ///// <summary>
    ///// 获取INI文件参数
    ///// </summary>
    /////<param name="as_section">INI文件中的段落名称
    /////<param name="as_key">INI文件中的关键字
    /////<param name="as_FileName">INI文件的完整路径和名称
    //public static string GetINIString(string as_section, string as_key, string as_FileName)
    //{
    //  StringBuilder temp = new StringBuilder(255);
    //  int i = GetPrivateProfileString(as_section, as_key, "", temp, 255, as_FileName);
    //  return temp.ToString();
    //}
    ///// <summary>
    ///// 获取INI文件参数
    ///// </summary>
    /////<param name="as_section">INI文件中的段落名称
    /////<param name="as_key">INI文件中的关键字
    /////<param name="as_FileName">INI文件的完整路径和名称
    //public static string GetINIString(string as_section, string as_key)
    //{
    //  return GetINIString(as_section, as_key, gs_FileName);
    //}
 
    ///// <summary>
    ///// 设置INI文件参数
    ///// </summary>
    /////<param name="as_section">INI文件中的段落
    /////<param name="as_key">INI文件中的关键字
    /////<param name="as_Value">INI文件中关键字的数值
    /////<param name="as_FileName">INI文件的完整路径和名称
    //public static long SetINIString(string as_section, string as_key, string as_Value, string as_FileName)
    //{
    //  return WritePrivateProfileString(as_section, as_key, as_Value, as_FileName);
    //}
    ///// <summary>
    ///// 设置INI文件参数
    ///// </summary>
    /////<param name="as_section">INI文件中的段落
    /////<param name="as_key">INI文件中的关键字
    /////<param name="as_Value">INI文件中关键字的数值
    //public static long SetINIString(string as_section, string as_key, string as_Value)
    //{
    //  return SetINIString(as_section, as_key, as_Value, gs_FileName);
    //}
    /// <summary>
    /// 写入INI文件
    /// </summary>
    ///<param name="section">节点名称[如[TypeName]]
    ///<param name="key">键
    ///<param name="val">值
    ///<param name="filepath">文件路径
    /// <returns></returns>
    [DllImport("kernel32")]
    public static extern long WritePrivateProfileString(string section, string key, string val, string filepath);
    [DllImport("kernel32.dll")]
    public extern static int GetPrivateProfileSectionNamesA(byte[] buffer, int iLen, string fileName);
    /// <summary>
    /// 写入INI文件(section:节点名称 key:键 val:值)
    /// </summary>
    ///<param name="section">节点名称
    ///<param name="key">键
    ///<param name="val">值
    /// <returns></returns>
    public static long SetINIString(string section, string key, string val, string as_FilePath = "")
    {
      if (as_FilePath == "")
      {
        return (WritePrivateProfileString(section, key, val, strFilePath));
      }
      else
      {
        return (WritePrivateProfileString(section, key, val, as_FilePath)); 
      }
    }
    /// <summary>
    /// 读取INI文件
    /// </summary>
    ///<param name="section">节点名称
    ///<param name="key">键
    ///<param name="def">值
    ///<param name="retval">stringbulider对象
    ///<param name="size">字节大小
    ///<param name="filePath">文件路径
    /// <returns></returns>
    [DllImport("kernel32")]
    public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retval, int size, string filePath);
    public static string strFilePath = Application.StartupPath + "\\Config.ini";//获取INI文件默认路径
    public static string strSec = "";
 
    //INI文件名
 
 
    /// <summary>
    /// 读取INI文件中的内容方法 (Section 节点名称;key 键)
    /// </summary>
    ///<param name="Section">节点名称
    ///<param name="key">键
    /// <returns></returns>
    public static string ContentValue(string Section, string key, string as_FilePath = "")
    {
 
      StringBuilder temp = new StringBuilder(1024);
      if (as_FilePath == "")
      {
        GetPrivateProfileString(Section, key, "", temp, 1024, strFilePath);
      }
      else
      {
        GetPrivateProfileString(Section, key, "", temp, 1024, as_FilePath); 
      }
      return temp.ToString();
    }
    /// <summary>
    /// 获取指定小节所有项名和值的一个列表 
    /// </summary>
    ///<param name="section">节 段，欲获取的小节。注意这个字串不区分大小写
    ///<param name="buffer">缓冲区 返回的是一个二进制的串，字符串之间是用"\0"分隔的
    ///<param name="nSize">缓冲区的大小
    ///<param name="filePath">初始化文件的名字。如没有指定完整路径名，windows就在Windows目录中查找文件
    /// <returns></returns>
    [DllImport("kernel32")]
    public static extern int GetPrivateProfileSection(string section, byte[] buffer, int nSize, string filePath);
    /// <summary>
    /// 获取指定段section下的所有键值对 返回集合的每一个键形如"key=value"
    /// </summary>
    ///<param name="section">指定的段落
    ///<param name="filePath">ini文件的绝对路径
    /// <returns></returns>
    public static List<string> ReadKeyValues(string section, string as_FilePath = "")
    {
      byte[] buffer = new byte[32767];
      List<string> list = new List<string>();
      int length = 0;
      if (as_FilePath == "")
      {
        length = GetPrivateProfileSection(section, buffer, buffer.GetUpperBound(0), strFilePath);
      }
      else
      {
        length = GetPrivateProfileSection(section, buffer, buffer.GetUpperBound(0), as_FilePath); 
      }
      string temp;
      int postion = 0;
      for (int i = 0; i < length; i++)
      {
        if (buffer[i] == 0x00) //以&#39;\0&#39;来作为分隔
        {
          temp = System.Text.ASCIIEncoding.Default.GetString(buffer, postion, i - postion).Trim();
          postion = i + 1;
          if (temp.Length > 0)
          {
            list.Add(temp);
          }
        }
      }
      return list;
    }
    /// <summary>
    /// 删除指定的key
    /// </summary>
    ///<param name="section">要写入的段落名
    ///<param name="key">要删除的键
    ///<param name="fileName">INI文件的完整路径和文件名
    public static void DelKey(string section, string key, string as_FilePath = "")
    {
      if (as_FilePath == "")
      {
        WritePrivateProfileString(section, key, null, strFilePath);
      }
      else
      {
        WritePrivateProfileString(section, key, null, as_FilePath);
      }
    }
    /// <summary>
    /// 返回该配置文件中所有Section名称的集合
    /// </summary>
    public static ArrayList ReadSections()
    {
      byte[] buffer = new byte[65535];
      int rel = GetPrivateProfileSectionNamesA(buffer, buffer.GetUpperBound(0), strFilePath); 
      int iCnt, iPos;
      ArrayList arrayList = new ArrayList();
      string tmp;
      if (rel > 0)
      {
        iCnt = 0; iPos = 0;
        for (iCnt = 0; iCnt < rel; iCnt++)
        {
          if (buffer[iCnt] == 0x00)
          {
            tmp = System.Text.ASCIIEncoding.UTF8.GetString(buffer, iPos, iCnt - iPos).Trim();
            iPos = iCnt + 1;
            if (tmp != "")
              arrayList.Add(tmp);
          }
        }
      }
      return arrayList;
    } 
  }</string></string></string>

运行结果:

这里写图片描述

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