详解微信公众号开发客服接口实例（附代码）

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 '%" + username + "%'");
 
      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.