1 微信开放平台：https://open./
2 微信官方教程：https://open./cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1419316505&token=&lang=zh_CN
3.pc页面显示
4. 通过官方提供的文档，我们可以看出一共分4个步骤
第一步：请求CODE
第二步：通过code获取access_token
第三步：通过access_token调用接口
第4步：获取用户个人信息（UnionID机制）
5.源码下载地址：/s/1pLyG66J
因代码加密：现贴出代码如下（下载后替换）：
Controllers--》DefaultController.cs
1 using System; 2 using System.Collections.Generic; 3 using System.Configuration; 4 using System.Text; 5 using System.Web; 6 using System.Web.Mvc; 7 8 using WebWeChat.Models; 9 10 namespace WebWeChat.Controllers 11 { 12public class DefaultController : Controller 13{ 14 #region 微信登录 15 16 /// <summary> 17 /// 微信登录 18 /// </summary> 19 public ActionResult WeChat() 20 { 21 //获得配置信息 22 string oauthAppId = ConfigurationManager.AppSettings["oauth_app_id"]; 23 string redirectUri = ConfigurationManager.AppSettings["Redirect_uri"]; 24 if (oauthAppId == null) 25 { 26 return this.Content("出错了，您尚未配置微信相关的API信息！"); 27 } 28 string state = Guid.NewGuid().ToString().Replace("-", ""); 29 this.Session["oauth_state"] = state; 30 string sendUrl = 31 "https://open./connect/qrconnect?appid=" + oauthAppId + 32 "&redirect_uri=" + HttpUtility.UrlEncode(redirectUri.ToLower()) + 33 "&response_type=code&scope=snsapi_login&state=" + state + 34 "#wechat_redirect"; 35 36 //开始发送 37 return this.Redirect(sendUrl); //跳转到微信自己 指定的关联登陆页面 38 } 39 40 /// <summary> 41 /// 微信登录返回action 42 /// </summary> 43 public ActionResult WeChatReturnUrl(string state, string code) 44 { 45 //取得返回参数 46 47 if (this.Session["oauth_state"] == null || this.Session["oauth_state"].ToString() == "" || 48 state != this.Session["oauth_state"].ToString() || string.IsNullOrEmpty(code)) //若返回参数中未包含code或者state没有通过验证则提示出错 49 { 50 return this.Content("出错啦，state未初始化！"); 51 } 52 53 //第一步：通过code来获取Access Token以及openid 54 Dictionary<string, object> dic1 = WeixinHelper.get_access_token(code, state); 55 if (dic1 == null || !dic1.ContainsKey("access_token")) 56 { 57 return this.Content("错误代码：，无法获取Access Token，请检查App Key是否正确！"); 58 } 59 if (!dic1.ContainsKey("openid")) 60 { 61 return dic1.ContainsKey("errmsg") 62 ? this.Content("errcode：" + dic1["errcode"] + ",errmsg：" + dic1["errmsg"]) 63 : this.Content("出错啦，无法获取用户授权Openid！"); 64 } 65 66 var accessToken = dic1["access_token"].ToString(); 67 var refreshToken = dic1["refresh_token"].ToString(); 68 var openid = dic1["openid"].ToString(); 69 70 //储存获取数据用到的信息 71 this.Session["oauth_name"] = "webchat"; 72 this.Session["oauth_access_token"] = accessToken; 73 this.Session["oauth_openid"] = openid; 74 this.Session["oauth_refresh_token"] = refreshToken; 75 76 #region todo 将获取到的用户信息保存到数据库中 77 78 #endregion 79 80 //第二步：通过Access Token以及openid来获取用户的基本信息 81 //Dictionary<string, object> dic2 = weixin_helper.get_user_info(access_token,openid); 82 83 //第三步：跳转到指定页面 84 return this.Content(this.WeChatResultJson()); 85 } 86 87 /// <summary> 88 /// 微信登录返回action, 处理用户信息 89 /// </summary> 90 public string WeChatResultJson() 91 { 92 if (this.Session["oauth_name"] == null || this.Session["oauth_access_token"] == null || 93 this.Session["oauth_openid"] == null) 94 { 95 return "{\"ret\":\"1\", \"msg\":\"出错啦，Access Token已过期或不存在！\"}"; 96 } 97 var oauthName = this.Session["oauth_name"].ToString(); 98 var oauthAccessToken = this.Session["oauth_access_token"].ToString(); 99 var oauthOpenid = this.Session["oauth_openid"].ToString();100 var oauthRefreshToken = this.Session["oauth_refresh_token"].ToString();101 102 if (!WeixinHelper.check_access_token(oauthAccessToken)) //调用access_token前需判断是否过期103 {104 Dictionary<string, object> dic1 = WeixinHelper.get_refresh_token(oauthRefreshToken); //如果已过期则重新换取新的access_token105 if (dic1 == null || !dic1.ContainsKey("access_token"))106 {107 return "{\"openid\":\"0\", \"msg\":\"出错啦，无法获取access_token！\"}";108 }109 oauthAccessToken = dic1["access_token"].ToString();110 }111 112 Dictionary<string, object> dic = WeixinHelper.get_user_info(oauthAccessToken, oauthOpenid);113 if (dic == null)114 {115 return "{\"openid\":\"0\", \"msg\":\"出错啦，无法获取授权用户信息！\"}";116 }117 try118 {119 StringBuilder str = new StringBuilder();120 str.Append("{");121 str.Append("\"openid\": \"" + dic["openid"] + "\", ");122 str.Append("\"nickname\": \"" + dic["nickname"] + "\", ");123 str.Append("\"sex\": \"" + dic["sex"] + "\", ");124 str.Append("\"province\": \"" + dic["province"] + "\", ");125 str.Append("\"city\": \"" + dic["city"] + "\", ");126 str.Append("\"country\": \"" + dic["country"] + "\", ");127 str.Append("\"headimgurl\": \"" + dic["headimgurl"] + "\", ");128 str.Append("\"privilege\": \"" + dic["privilege"] + "\", ");129 str.Append("\"unionid\": \"" + dic["unionid"] + "\"");130 str.Append("\"oauth_name\": \"" + oauthName + "\"");131 str.Append("\"oauth_access_token\": \"" + oauthAccessToken + "\"");132 str.Append("\"oauth_openid\": \"" + oauthOpenid + "\"");133 str.Append("}");134 return str.ToString();135 }136 catch137 {138 return "{\"ret\":\"0\", \"msg\":\"出错啦，无法获取授权用户信息！\"}";139 }140 }141 142 #endregion143}144 }
Models---》HttpMethods
1 using System; 2 using System.Collections.Generic; 3 using System.IO; 4 using ; 5 using System.Text; 6 7 namespace WebWeChat.Models 8 { 9//// 10/// <summary> A HTTP methods. </summary> 11/// 12/// <remarks> xiaop, /12/16. </remarks> 13//// 14public static class HttpMethods 15{ 16 #region POST 17 18 /// <summary> 19 /// HTTP POST方式请求数据 20 /// </summary> 21 /// <param name="url">URL.</param> 22 /// <param name="param">POST的数据</param> 23 /// <returns></returns> 24 public static string HttpPost(string url, string param) 25 { 26 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); 27 request.Method = "POST"; 28 request.ContentType = "application/x-www-form-urlencoded"; 29 request.Accept = "*/*"; 30 request.Timeout = 15000; 31 request.AllowAutoRedirect = false; 32 33 string responseStr; 34 35 var requestStream = new StreamWriter(request.GetRequestStream()); 36 requestStream.Write(param); 37 requestStream.Close(); 38 39 var response = request.GetResponse(); 40 { 41 // ReSharper disable once AssignNullToNotNullAttribute 42 StreamReader reader = new StreamReader(stream: response.GetResponseStream(), encoding: Encoding.UTF8); 43 responseStr = reader.ReadToEnd(); 44 reader.Close(); 45 } 46 47 return responseStr; 48 } 49 50 #endregion 51 52 #region Get 53 54 /// <summary> 55 /// HTTP GET方式请求数据. 56 /// </summary> 57 /// <param name="url">URL.</param> 58 /// <returns></returns> 59 public static string HttpGet(string url) 60 { 61 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); 62 request.Method = "GET"; 63 64 //request.ContentType = "application/x-www-form-urlencoded"; 65 request.Accept = "*/*"; 66 request.Timeout = 15000; 67 request.AllowAutoRedirect = false; 68 69 string responseStr; 70 71 var response = request.GetResponse(); 72 73 { 74 // ReSharper disable once AssignNullToNotNullAttribute 75 StreamReader reader = new StreamReader(stream: response.GetResponseStream(), encoding: Encoding.UTF8); 76 responseStr = reader.ReadToEnd(); 77 reader.Close(); 78 } 79 80 return responseStr; 81 } 82 83 #endregion 84 85 #region Post With Pic 86 87 public static string HttpPost(string url, IDictionary<object, object> param, string filePath) 88 { 89 string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x"); 90 byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n"); 91 92 HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url); 93 wr.ContentType = "multipart/form-data; boundary=" + boundary; 94 wr.Method = "POST"; 95 wr.KeepAlive = true; 96 wr.Credentials = CredentialCache.DefaultCredentials; 97 98 Stream rs = wr.GetRequestStream(); 99 string responseStr = null;100 101 string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";102 foreach (string key in param.Keys)103 {104 rs.Write(boundarybytes, 0, boundarybytes.Length);105 string formitem = string.Format(formdataTemplate, key, param[key]);106 byte[] formitembytes = Encoding.UTF8.GetBytes(formitem);107 rs.Write(formitembytes, 0, formitembytes.Length);108 }109 rs.Write(boundarybytes, 0, boundarybytes.Length);110 111 string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";112 string header = string.Format(headerTemplate, "pic", filePath, "text/plain");113 byte[] headerbytes = Encoding.UTF8.GetBytes(header);114 rs.Write(headerbytes, 0, headerbytes.Length);115 116 FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);117 byte[] buffer = new byte[4096];118 int bytesRead;119 while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)120 {121 rs.Write(buffer, 0, bytesRead);122 }123 fileStream.Close();124 125 byte[] trailer = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");126 rs.Write(trailer, 0, trailer.Length);127 rs.Close();128 129 WebResponse wresp = null;130 try131 {132 wresp = wr.GetResponse();133 Stream stream2 = wresp.GetResponseStream();134 if (stream2 != null)135 {136 StreamReader reader2 = new StreamReader(stream2);137 responseStr = reader2.ReadToEnd();138 }139 140 //logger.Debug(string.Format("File uploaded, server response is: {0}", responseStr));141 }142 catch (Exception)143 {144 //logger.Error("Error uploading file", ex);145 if (wresp != null)146 {147 wresp.Close();148 }149 }150 return responseStr;151 }152 153 #endregion154 155 #region Post With Pic156 157 /// <summary>158 /// HTTP POST方式请求数据(带图片)159 /// </summary>160 /// <param name="url">URL</param> 161 /// <param name="param">POST的数据</param>162 /// <param name="fileByte">图片</param>163 /// <returns></returns>164 public static string HttpPost(string url, IDictionary<object, object> param, byte[] fileByte)165 {166 string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");167 byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");168 169 HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url);170 wr.ContentType = "multipart/form-data; boundary=" + boundary;171 wr.Method = "POST";172 wr.KeepAlive = true;173 wr.Credentials = CredentialCache.DefaultCredentials;174 175 Stream rs = wr.GetRequestStream();176 string responseStr = null;177 178 string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";179 foreach (string key in param.Keys)180 {181 rs.Write(boundarybytes, 0, boundarybytes.Length);182 string formitem = string.Format(formdataTemplate, key, param[key]);183 byte[] formitembytes = Encoding.UTF8.GetBytes(formitem);184 rs.Write(formitembytes, 0, formitembytes.Length);185 }186 rs.Write(boundarybytes, 0, boundarybytes.Length);187 188 string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n";189 string header = string.Format(headerTemplate, "pic", fileByte, "text/plain"); //image/jpeg190 byte[] headerbytes = Encoding.UTF8.GetBytes(header);191 rs.Write(headerbytes, 0, headerbytes.Length);192 193 rs.Write(fileByte, 0, fileByte.Length);194 195 byte[] trailer = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");196 rs.Write(trailer, 0, trailer.Length);197 rs.Close();198 199 WebResponse wresp = null;200 try201 {202 wresp = wr.GetResponse();203 Stream stream2 = wresp.GetResponseStream();204 if (stream2 != null)205 {206 StreamReader reader2 = new StreamReader(stream2);207 responseStr = reader2.ReadToEnd();208 }209 210 // logger.Error(string.Format("File uploaded, server response is: {0}", responseStr));211 }212 catch (Exception)213 {214 //logger.Error("Error uploading file", ex);215 if (wresp != null)216 {217 wresp.Close();218 }219 }220 return responseStr;221 }222 223 #endregion224}225 }
Models---》WeixinHelper
1 using System.Collections.Generic; 2 using System.Configuration; 3 4 using Newtonsoft.Json; 5 6 namespace WebWeChat.Models 7 { 8public static class WeixinHelper 9{ 10 #region 获得配置信息 11 12 private static readonly string OauthAppId = ConfigurationManager.AppSettings["oauth_app_id"]; 13 private static readonly string OauthAppKey = ConfigurationManager.AppSettings["oauth_app_key"]; 14 15 #endregion 16 17 /// <summary> 18 /// 根据AppID和AppSecret获得access token(默认过期时间为2小时) 19 /// </summary> 20 /// <returns>Dictionary</returns> 21 public static Dictionary<string, object> get_access_token() 22 { 23 string sendUrl = "https://api./cgi-bin/token?grant_type=client_credential&appid=" + 24WeixinHelper.OauthAppId + "&secret=" + WeixinHelper.OauthAppKey + ""; 25 26 //发送并接受返回值 27 string result = HttpMethods.HttpGet(sendUrl); 28 if (result.Contains("errmsg")) 29 { 30 return null; 31 } 32 try 33 { 34 Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result); 35 return dic; 36 } 37 catch 38 { 39 return null; 40 } 41 } 42 43 /// <summary> 44 /// 取得临时的Access Token(默认过期时间为2小时) 45 /// </summary> 46 /// <param name="code">临时Authorization Code</param> 47 /// <param name="state">防止CSRF攻击，成功授权后回调时会原样带回</param> 48 /// <returns>Dictionary</returns> 49 public static Dictionary<string, object> get_access_token(string code, string state) 50 { 51 string sendUrl = "https://api./sns/oauth2/access_token?appid=" + 52WeixinHelper.OauthAppId + "&secret=" + WeixinHelper.OauthAppKey + "&code=" + code + 53"&grant_type=authorization_code"; 54 55 //发送并接受返回值 56 string result = HttpMethods.HttpGet(sendUrl); 57 if (result.Contains("errmsg")) 58 { 59 return null; 60 } 61 try 62 { 63 Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result); 64 return dic; 65 } 66 catch 67 { 68 return null; 69 } 70 } 71 72 /// <summary> 73 /// 根据access_token判断access_token是否过期 74 /// </summary> 75 /// <param name="accessToken"></param> 76 /// <returns>true表示未失效</returns> 77 public static bool check_access_token(string accessToken) 78 { 79 string sendUrl = "https://api./sns/auth?access_token=" + accessToken + "&openid=" + WeixinHelper.OauthAppId; 80 81 //发送并接受返回值 82 string result = HttpMethods.HttpGet(sendUrl); 83 try 84 { 85 Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result); 86 if (dic.ContainsKey("errmsg")) 87 { 88 return dic["errmsg"].ToString() == "ok"; 89 } 90 return false; 91 } 92 catch 93 { 94 return false; 95 } 96 } 97 98 /// <summary> 99 /// 若fresh_token已过期则根据refresh_token取得新的refresh_token100 /// </summary>101 /// <param name="refreshToken">refresh_token</param>102 /// <returns>Dictionary</returns>103 public static Dictionary<string, object> get_refresh_token(string refreshToken)104 {105 string sendUrl =106 "https://api./sns/oauth2/refresh_token?appid=" +107 WeixinHelper.OauthAppId + "&grant_type=refresh_token&refresh_token=" + refreshToken;108 109 //发送并接受返回值110 string result = HttpMethods.HttpGet(sendUrl);111 if (result.Contains("errmsg"))112 {113 return null;114 }115 try116 {117 return JsonConvert.DeserializeObject<Dictionary<string, object>>(result);118 }119 catch120 {121 return null;122 }123 }124 125 /// <summary>126 /// 获取登录用户自己的基本资料127 /// </summary>128 /// <param name="accessToken">临时的Access Token</param>129 /// <param name="openId">用户openid</param>130 /// <returns>Dictionary</returns>131 public static Dictionary<string, object> get_user_info(string accessToken, string openId)132 {133 //发送并接受返回值 134 string sendUrl = "https://api./sns/userinfo?access_token=" + accessToken + "&openid=" + openId;135 136 //发送并接受返回值137 string result = HttpMethods.HttpGet(sendUrl);138 if (result.Contains("errmsg"))139 {140 return null;141 }142 143 //反序列化JSON144 Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result);145 return dic;146 }147}148 }
我的签名：坚持赚钱，顺便理想。
