242 lines
9.7 KiB
C#
242 lines
9.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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using System.Web;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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using HZQR.Common;
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using RedisHelp;
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namespace EShang.Common
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{
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/// <summary>
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/// 微信相关帮助类
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/// </summary>
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public class WeChatHelper
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{
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/// <summary>
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/// 根据微信小程序平台提供的解密算法解密数据
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/// 创建人：zhengxp
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/// 创建日期：2020-03-17
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/// 修改人：
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/// 修改日期：yyyy-mm-dd
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/// 修改备注：无
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/// </summary>
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/// <param name="encryptedData">加密数据</param>
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/// <param name="iv">初始向量</param>
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/// <param name="sessionKey">从服务端获取的SessionKey</param>
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/// <returns></returns>
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public static string Decrypt(string encryptedData, string iv, string sessionKey)
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{
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//创建解密器生成工具实例
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AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
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//设置解密器参数
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aes.Mode = CipherMode.CBC;
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aes.BlockSize = 128;
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aes.Padding = PaddingMode.PKCS7;
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//格式化待处理字符串
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byte[] byte_encryptedData = Convert.FromBase64String(encryptedData);
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byte[] byte_iv = Convert.FromBase64String(iv);
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byte[] byte_sessionKey = Convert.FromBase64String(sessionKey);
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aes.IV = byte_iv;
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aes.Key = byte_sessionKey;
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//根据设置好的数据生成解密器实例
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ICryptoTransform transform = aes.CreateDecryptor();
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//解密
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byte[] final = transform.TransformFinalBlock(byte_encryptedData, 0, byte_encryptedData.Length);
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//生成结果
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string result = Encoding.UTF8.GetString(final);
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return result;
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}
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/// <summary>
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/// 获取AccessToken
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/// 创建人：zhengxp
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/// 创建日期：2020-03-17
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/// 修改人：
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/// 修改日期：yyyy-mm-dd
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/// 修改备注：无
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/// </summary>
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/// <param name="_AppID"></param>
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/// <param name="_AppSecret"></param>
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/// <returns></returns>
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public static string GetAccessToken(string _AppID, string _AppSecret)
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{
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string reString = "";
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try
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{
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string cachId = _AppID + "_AccessToken";//缓存key
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if (System.Web.HttpRuntime.Cache[cachId] != null)
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{
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JObject info = (JObject)HttpRuntime.Cache[cachId];
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DateTime access_token_time = Convert.ToDateTime(info["access_token_time"]);
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int expires_in = Convert.ToInt32(info["expires_in"]);
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if (access_token_time.AddSeconds(expires_in - 5) > DateTime.Now)
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{
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return info["access_token "].ToString();
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}
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}
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string url = "https://api.weixin.qq.com/cgi-bin/token?" +
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"grant_type=client_credential&appid=" + _AppID + "&secret=" + _AppSecret;
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//根据url创建HttpWebRequest对象
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HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(url);
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objRequest.Method = "get";
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//读取服务器返回信息
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HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
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//using作为语句，用于定义一个范围，在此范围的末尾将释放对象
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using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
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{
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//ReadToEnd适用于小文件的读取，一次性的返回整个文件
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JObject _JObject = (JObject)JsonConvert.DeserializeObject(sr.ReadToEnd());
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System.Web.HttpRuntime.Cache.Insert(cachId, _JObject, null, DateTime.MaxValue, TimeSpan.FromSeconds(10));
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try
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{
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reString = _JObject["access_token"].ToString();
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}
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catch (Exception ex)
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{
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reString = "错误代码：" + _JObject["errcode"].ToString() + "，错误原因：" +
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_JObject["errmsg"].ToString() + "(" + ex.Message + ")";
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}
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sr.Close();
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}
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}
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catch (Exception ex)
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{
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reString = "error:" + ex.Message;
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}
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return reString;
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}
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/// <summary>
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/// 调用微信授权接口
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/// 创建人：zhengxp
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/// 创建日期：2020-03-17
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/// 修改人：
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/// 修改日期：yyyy-mm-dd
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/// 修改备注：无
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/// </summary>
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/// <param name="wechatAppAppId"></param>
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/// <param name="appSecret"></param>
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/// <param name="code"></param>
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/// <returns>JObject格式,Data中包含session_key、openid、unionid)</returns>
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public static JObject WeChatLogin(string wechatAppAppId, string appSecret, string code)
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{
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JObject info = new JObject();
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try
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{
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string url = "https://api.weixin.qq.com/sns/jscode2session";
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if (!string.IsNullOrEmpty(code))
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{
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string reqUrl = url + "?appid=" + wechatAppAppId + "&secret=" + appSecret +
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"&js_code=" + code + "&grant_type=authorization_code";
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//根据reqUrl创建HttpWebRequest对象
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HttpWebRequest objResquest = (HttpWebRequest)WebRequest.Create(reqUrl);
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objResquest.Method = "get";
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//读取服务器返回信息
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HttpWebResponse objResponse = (HttpWebResponse)objResquest.GetResponse();
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using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
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{
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string srString = sr.ReadToEnd();
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//ReadToEnd适用于小文件的读取，一次的放回整个文件
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JObject data = (JObject)JsonConvert.DeserializeObject(srString);
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if (data.Property("errcode") != null)
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{
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info["ResultCode"] = data["errcode"];
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info["ResultDesc"] = data["errmsg"];
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}
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else
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{
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info["ResultData"] = data;
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info["ResultCode"] = 100;
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info["ResultDesc"] = "请求成功";
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}
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}
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}
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}
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catch (Exception ex)
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{
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SuperMap.RealEstate.Utility.ErrorLogHelper.Write(ex, "小程序登录", "");
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ex = ex ?? ex.InnerException;
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info["ResultCode"] = 999;
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info["ResultDesc"] = "请求失败" + ex.Message;
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}
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return info;
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}
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/// <summary>
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/// 检查一段文本是否含有违法违规内容
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/// </summary>
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/// <param name="wechatAppAppId"></param>
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/// <param name="appSecret"></param>
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/// <param name="content">要检测的文本内容，长度不超过 500KB</param>
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/// <returns></returns>
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public static JObject WeChatMsgSecCheck(string wechatAppAppId, string appSecret, string content)
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{
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JObject info = new JObject();
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try
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{
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string access_token = GetAccessToken(wechatAppAppId, appSecret);
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string url = "https://api.weixin.qq.com/wxa/msg_sec_check";
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info["ResultCode"] = 100;
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info["ResultDesc"] = "ok";
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if (!string.IsNullOrEmpty(content))
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{
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string reqUrl = url + "?access_token=" + access_token;
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JObject jsonObj = new JObject();
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jsonObj["content"] = content;
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string jsondata = jsonObj.ToString();
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string restr = HttpUtil.HttpUrlPost(jsondata, reqUrl);
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JObject data = (JObject)JsonConvert.DeserializeObject(restr);
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if (data.Property("errcode").Value.TryParseToInt() != 0)
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{
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info["ResultCode"] = data["errcode"];
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if (data["errcode"].TryParseToInt() == 87014)
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{
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info["ResultDesc"] = "内容含有违法违规内容";
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}
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else
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{
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info["ResultCode"] = data["errcode"];
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}
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}
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}
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}
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catch (Exception ex)
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{
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SuperMap.RealEstate.Utility.ErrorLogHelper.Write(ex, "检查一段文本是否含有违法违规内容", "");
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ex = ex ?? ex.InnerException;
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info["ResultCode"] = 999;
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info["ResultDesc"] = "请求失败" + ex.Message;
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}
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return info;
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}
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}
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}
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public class WechatUserInfo
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{
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public string openId { get; set; }
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public string nickName { get; set; }
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public string gender { get; set; }
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public string city { get; set; }
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public string province { get; set; }
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public string country { get; set; }
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public string avatarUrl { get; set; }
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public string unionId { get; set; }
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}
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