C#微信小程序服务端获取用户解密信息实例代码

C# 2018-12-31

C#微信小程序服务端获取用户解密信息实例代码

实现代码：

rush:csharp;"> using AIOWeb.Models; using Newtonsoft.Json; using Newtonsoft.Json.Linq; using System; using System.Collections.Generic; using System.Data; using System.Data.sqlClient; using System.Linq; using System.Web;

namespace AIOWeb
{
///


/// wxapi 的摘要说明
///
public class wxapi : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain"; 

  string code = ""; 
  string iv = ""; 
  string encryptedData = ""; 
  try 
  { 
    code = HttpContext.Current.Request.QueryString["code"].ToString(); 
    iv = HttpContext.Current.Request.QueryString["iv"].ToString(); 
    encryptedData = HttpContext.Current.Request.QueryString["encryptedData"].ToString(); 
  } 
  catch (Exception ex) 
  { 
    context.Response.Write(ex.ToString()); 
  } 

  string Appid = "wxdb2641f85b04f1b3"; 
  string Secret = "8591d8cd7197b9197e17b3275329a1e7"; 
  string grant_type = "authorization_code"; 

  //向微信服务端 使用<a href="https://www.jb51.cc/tag/denglu/" target="_blank" class="keywords">登录</a>凭证 code <a href="https://www.jb51.cc/tag/huoqu/" target="_blank" class="keywords">获取</a> session_key 和 openid  
  string url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + Appid + "&secret=" + Secret + "&js_code=" + code + "&grant_type=" + grant_type; 
  string type = "utf-8"; 

  AIOWeb.Models.GetUsersHelper GetUsersHelper = new AIOWeb.Models.GetUsersHelper(); 
  string j = GetUsersHelper.GetUrltoHtml(url,type);//<a href="https://www.jb51.cc/tag/huoqu/" target="_blank" class="keywords">获取</a>微信服务器返回字符串 

  //将<a href="https://www.jb51.cc/tag/zifuchuanzhuanhuan/" target="_blank" class="keywords">字符串转换</a>为json格式 
  JObject jo = (JObject)JsonConvert.DeserializeObject(j); 

  result res = new result(); 
  try 
  { 
    //微信服务器验证成功 
    res.openid = jo["openid"].ToString(); 
    res.session_key = jo["session_key"].ToString(); 
  } 
  catch (Exception) 
  { 
    //微信服务器验证失败 
    res.errcode = jo["errcode"].ToString(); 
    res.errmsg = jo["errmsg"].ToString(); 
  } 
  if (!string.IsNullOrEmpty(res.openid)) 
  { 
    //<a href="https://www.jb51.cc/tag/yonghu/" target="_blank" class="keywords">用户</a>数据解密 
    GetUsersHelper.AesIV = iv; 
    GetUsersHelper.AesKey = res.session_key; 

    string result = GetUsersHelper.AESDecrypt(encryptedData); 


    //存储<a href="https://www.jb51.cc/tag/yonghu/" target="_blank" class="keywords">用户</a>数据 
    JObject _usrInfo = (JObject)JsonConvert.DeserializeObject(result); 

    userInfo userInfo = new userInfo(); 
    userInfo.openId = _usrInfo["openId"].ToString(); 

    try //部分验证返回值中没有unionId 
    { 
      userInfo.unionId = _usrInfo["unionId"].ToString(); 
    } 
    catch (Exception) 
    { 
      userInfo.unionId = "unionId"; 
    } 

    userInfo.nickName = _usrInfo["nickName"].ToString(); 
    userInfo.gender = _usrInfo["gender"].ToString(); 
    userInfo.city = _usrInfo["city"].ToString(); 
    userInfo.province = _usrInfo["province"].ToString(); 
    userInfo.country = _usrInfo["country"].ToString(); 
    userInfo.avatarUrl = _usrInfo["avatarUrl"].ToString(); 

    object watermark = _usrInfo["watermark"].ToString(); 
    object appid = _usrInfo["watermark"]["appid"].ToString(); 
    object timestamp = _usrInfo["watermark"]["timestamp"].ToString(); 


    #region 


    //创建连接池对象（与<a href="https://www.jb51.cc/tag/shujuku/" target="_blank" class="keywords">数据库</a>服务器进行连接） 
    <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Connection conn = new <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Connection("server=127.0.0.1;database=Test;uid=sa;pwd=1"); 
    //打开连接池 
    conn.<a href="https://www.jb51.cc/tag/open/" target="_blank" class="keywords">open()</a>; 
    //创建命令对象 
    string Qrystr = "SELECT * FROM WeChatUsers WHERE openId='" + userInfo.openId + "'"; 
    <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Command cmdQry = new <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Command(Qrystr,conn); 
    object obj = cmdQry.ExecuteScalar(); 
    if ((Object.Equals(obj,null)) || (Object.Equals(obj,Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.<a href="https://www.jb51.cc/tag/dbn/" target="_blank" class="keywords">dbn</a>ull.Value))) 
    { 
      string str = "INSERT INTO WeChatUsers ([UnionId],[OpenId],[NickName],[Gender],[City],[Province],[Country],[AvatarUrl],[Appid],[Timestamp],[Memo],[counts])VALUES('" + userInfo.unionId + "','" + userInfo.openId + "','" + userInfo.nickName + "','" + userInfo.gender + "','" + userInfo.city + "','" + userInfo.province + "','" + userInfo.country + "','" + userInfo.avatarUrl + "','" + appid.ToString() + "','" + timestamp.ToString() + "','来自<a href="https://www.jb51.cc/tag/weixinxiaochengxu/" target="_blank" class="keywords">微信小程序</a>','1')"; 

      <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Command cmdUp = new <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Command(str,conn); 
      // 执行操作 
      try 
      { 
        int row = cmdUp.ExecuteNonQuery(); 
      } 
      catch (Exception ex) 
      { 
        context.Response.Write(ex.ToString()); 
      } 
    } 
    else 
    { 
      //多次访问，记录访问<a href="https://www.jb51.cc/tag/cishu/" target="_blank" class="keywords">次数</a>counts  更新unionId是预防最初没有，后期关联后却仍未记录 
      string str = "UPDATE dbo.WeChatUsers SET counts = counts+1，UnionId = '" + userInfo.unionId + "' WHERE OpenId='" + userInfo.openId + "'"; 
      <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Command cmdUp = new <a href="https://www.jb51.cc/tag/sql/" target="_blank" class="keywords">sql</a>Command(str,conn); 
      int row = cmdUp.ExecuteNonQuery(); 
    } 

    //<a href="https://www.jb51.cc/tag/guanbi/" target="_blank" class="keywords">关闭</a>连接池 
    conn.Close(); 
    #endregion 

    //返回解密后的<a href="https://www.jb51.cc/tag/yonghu/" target="_blank" class="keywords">用户</a>数据 
    context.Response.Write(result); 
  } 
  else 
  { 
    context.Response.Write(j); 
  } 
} 

public bool IsReusable 
{ 
  get 
  { 
    return false; 
  } 
}

}
}

GetUsersHelper 帮助类

rush:csharp;"> using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Security.Cryptography; using System.Text; using System.Threading.Tasks;

namespace AIOWeb.Models
{
public class GetUsersHelper
{ 

/// <summary> 
/// <a href="https://www.jb51.cc/tag/huoqu/" target="_blank" class="keywords">获取</a><a href="https://www.jb51.cc/tag/lianjie/" target="_blank" class="keywords">链接</a>返回数据 
/// </summary> 
/// <p<a href="https://www.jb51.cc/tag/ara/" target="_blank" class="keywords">ara</a>m name="Url"&gt;<a href="https://www.jb51.cc/tag/lianjie/" target="_blank" class="keywords">链接</a></param> 
/// <p<a href="https://www.jb51.cc/tag/ara/" target="_blank" class="keywords">ara</a>m name="type"&gt;请求类型</param> 
/// <returns></returns> 
public string GetUrltoHtml(string Url,string type) 
{ 
  try 
  { 
    Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Net.WebRequest wReq = Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Net.WebRequest.Create(Url); 
    // Get the response instance. 
    Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Net.WebResponse wResp = wReq.GetResponse(); 
    Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.IO.Stream respStream = wResp.GetResponseStream(); 
    // Dim reader As StreamReader = New StreamReader(respStream) 
    using (Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.IO.StreamReader reader = new Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.IO.StreamReader(respStream,Encoding.GetEncoding(type))) 
    { 
      return reader.ReadToEnd(); 
    } 
  } 
  catch (Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Exception ex) 
  { 
    return ex.Message; 
  } 
} 
#region <a href="https://www.jb51.cc/tag/weixinxiaochengxu/" target="_blank" class="keywords">微信小程序</a><a href="https://www.jb51.cc/tag/yonghu/" target="_blank" class="keywords">用户</a>数据解密 

public static string AesKey; 
public static string AesIV; 

/// <summary> 
/// AES解密 
/// </summary> 
/// <p<a href="https://www.jb51.cc/tag/ara/" target="_blank" class="keywords">ara</a>m name="inputdata"&gt;输入的数据encryptedData</param> 
/// <p<a href="https://www.jb51.cc/tag/ara/" target="_blank" class="keywords">ara</a>m name="AesKey"&gt;key</param> 
/// <p<a href="https://www.jb51.cc/tag/ara/" target="_blank" class="keywords">ara</a>m name="AesIV"&gt;向量128</param> 
/// <returns name="result"&gt;解密后的字符串</returns> 
public string AESDecrypt(string inputdata) 
{ 
  try 
  { 
    AesIV = AesIV.Replace(" ","+"); 
    AesKey = AesKey.Replace(" ","+"); 
    inputdata = inputdata.Replace(" ","+"); 
    byte[] encryptedData = Convert.FromBase64String(inputdata); 

    RijndaelManaged rijndaelCipher = new RijndaelManaged(); 
    rijndaelCipher.Key = Convert.FromBase64String(AesKey); // Encoding.UTF8.GetBytes(AesKey); 
    rijndaelCipher.IV = Convert.FromBase64String(AesIV);// Encoding.UTF8.GetBytes(AesIV); 
    rijndaelCipher.Mode = CipherMode.CBC; 
    rijndaelCipher.Padding = PaddingMode.PKCS7; 
    ICryptoTransform transform = rijndaelCipher.CreateDecryptor(); 
    byte[] plainText = transform.TransformFinalBlock(encryptedData,encryptedData.Length); 
    string result = Encoding.UTF8.GetString(plainText); 

    return result; 
  } 
  catch (Exception) 
  { 
    return null; 

  } 
} 
#endregion

}
}

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