C#微信小程序服务端获取用户解密信息

来源：互联网发布：农村公共文化服务网络编辑：程序博客网时间：2024/04/28 01:47

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],[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    }}

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