### [微信小程序服务端获取用户解密信息的方法](https://www.prosaas.cn/article/17265)

**Published:** 2018-06-27T07:52:54

**Author:** 5201314

**Excerpt:** 这篇文章主要介绍了 C#微信小程序服务端获取用户解密信息实例代码的相关资料,需要的朋友可以参考下 C#微信小程…

这篇文章主要介绍了 C#微信小程序服务端获取用户解密信息实例代码的相关资料,需要的朋友可以参考下

 **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：**

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 
{ 
  /// <summary> 
  /// wxapi 的摘要说明 
  /// </summary> 
  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 使用登录凭证 code 获取 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);//获取微信服务器返回字符串 
 
      //将字符串转换为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)) 
      { 
        //用户数据解密 
        GetUsersHelper.AesIV = iv; 
        GetUsersHelper.AesKey = res.session\_key; 
 
        string result = GetUsersHelper.AESDecrypt(encryptedData); 
 
 
        //存储用户数据 
        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（与数据库服务器进行连接） 
        SqlConnection conn = new SqlConnection("server=127.0.0.1;database=Test;uid=sa;pwd=1"); 
        //打开连接池 
        conn.Open(); 
        //创建命令对象 
        string Qrystr = "SELECT \* FROM WeChatUsers WHERE openId='" + userInfo.openId + "'"; 
        SqlCommand cmdQry = new SqlCommand(Qrystr, conn); 
        object obj = cmdQry.ExecuteScalar(); 
        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) 
        { 
          string str = "INSERT INTO WeChatUsers (\[UnionId\] ,\[OpenId\],\[NickName\],\[Gender\],\[City\],\[Province\],\[Country\],\[AvatarUrl\],\[Appid\],1702644893,\[Memo\],\[counts\])VALUES('" + userInfo.unionId + "','" + userInfo.openId + "','" + userInfo.nickName + "','" + userInfo.gender + "','" + userInfo.city + "','" + userInfo.province + "','" + userInfo.country + "','" + userInfo.avatarUrl + "','" + appid.ToString() + "','" + timestamp.ToString() + "','来自微信小程序','1')"; 
 
          SqlCommand cmdUp = new SqlCommand(str, conn); 
          // 执行操作 
          try 
          { 
            int row = cmdUp.ExecuteNonQuery(); 
          } 
          catch (Exception ex) 
          { 
            context.Response.Write(ex.ToString()); 
          } 
        } 
        else 
        { 
          //多次访问，记录访问次数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 + "'"; 
          SqlCommand cmdUp = new SqlCommand(str, conn); 
          int row = cmdUp.ExecuteNonQuery(); 
        } 
         
        //关闭连接池 
        conn.Close(); 
        #endregion 
 
        //返回解密后的用户数据 
        context.Response.Write(result); 
      } 
      else 
      { 
        context.Response.Write(j); 
      } 
    } 
 
    public bool IsReusable 
    { 
      get 
      { 
        return false; 
      } 
    } 
  } 
}

GetUsersHelper 帮助类

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> 
    /// 获取链接返回数据 
    /// </summary> 
    /// <param name="Url">链接</param> 
    /// <param name="type">请求类型</param> 
    /// <returns></returns> 
    public string GetUrltoHtml(string Url, string type) 
    { 
      try 
      { 
        System.Net.WebRequest wReq = System.Net.WebRequest.Create(Url); 
        // Get the response instance. 
        System.Net.WebResponse wResp = wReq.GetResponse(); 
        System.IO.Stream respStream = wResp.GetResponseStream(); 
        // Dim reader As StreamReader = New StreamReader(respStream) 
        using (System.IO.StreamReader reader = new System.IO.StreamReader(respStream, Encoding.GetEncoding(type))) 
        { 
          return reader.ReadToEnd(); 
        } 
      } 
      catch (System.Exception ex) 
      { 
        return ex.Message; 
      } 
    } 
    #region 微信小程序用户数据解密 
 
    public static string AesKey; 
    public static string AesIV; 
 
    /// <summary> 
    /// AES解密 
    /// </summary> 
    /// <param name="inputdata">输入的数据encryptedData</param> 
    /// <param name="AesKey">key</param> 
    /// <param name="AesIV">向量128</param> 
    /// <returns name="result">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, 0, encryptedData.Length); 
        string result = Encoding.UTF8.GetString(plainText); 
 
        return result; 
      } 
      catch (Exception) 
      { 
        return null; 
 
      } 
    } 
    #endregion 
  } 
}

以上就是本文的全部内容，希望对大家的学习有所帮助，更多相关内容请关注PHP中文网！

相关推荐：

如何解决微信小程序请求服务器手机预览请求不到数据的问题

关于微信小程序中弹框和模态框的实现

以上就是微信小程序服务端获取用户解密信息的方法的详细内容，更多请关注知企PROSAAS其它相关文章！

**Categories:** 后端开发

---