| Chemmy's Blog

前言

如果用户在微信客户端中访问第三方网页，公众号可以通过微信网页授权机制，来获取用户基本信息，进而实现业务逻辑。

注意：网页授权两种方式

更多网页授权请查阅官网文档：网页授权

静默授权

静默授权即可以在用户关注的的时候，获取用户基本信息，此过程用户无感知。

第一步，通过工厂类转发请求

　　　　　　
///
public string HandleRequest()
{ string response = string.Empty;
EventMessage em = EventMessage.LoadFromXml(RequestXml); if (em != null)
{ switch (em.Event.ToLower())
{ case (“subscribe”):
response = SubscribeEventHandler(em);//通过工厂类分发过来的请求，匹配到关注事件
break; case (“unsubscribe”):
response = Un_SubscribeEventHandler(em); break; case “click”:
response = ClickEventHandler(em); break;
}
} return response;
}

第二步，写用户关注事件

///

/// 用户关注 ///

///
///
public string SubscribeEventHandler(EventMessage em)
{ //回复欢迎消息
WeChat.Messages.TextMessage tm = new WeChat.Messages.TextMessage();
tm.ToUserName = em.FromUserName;//OpenId
tm.FromUserName = em.ToUserName;//公众号原始Id
tm.CreateTime = Common.GetNowTime();
tm.Content = “欢迎您关注****，我是服务小二，有事就问我～\n\n”;
tm.GenerateContent(); //如有业务需要，可在此处先判断该用户是否已关注
　　　　　　　//此处得到OpenId
show.ShowUserInfo(em.FromUserName,em.ToUserName);

return tm.GenerateContent();
}

第三步，根据得到的OpenId及accesstoken，即可获取用户基本信息（此处演示是将该用户存入数据库中）

///

/// 根据OpenId将此条粉丝记录插入数据库中 ///

///
///
public void ShowUserInfo(string FromUserName, string ToUserName)
{ try {
Models.Users user = new Models.Users();
DAL.User userInfo = new DAL.User(); //获取accesstoken，获取用户基本信息需要Openid和accesstoken即可 accesstoken = Utility.Context.AccessToken; string url = string.Format(“https://api.weixin.qq.com/cgi-bin/user/info?access\_token={0}&openid={1}&lang=zh\_CN“, accesstoken, FromUserName); string result = HttpUtility.GetData(url);
XDocument doc = XmlUtility.ParseJson(result, “root”);
XElement root = doc.Root; if (root != null)
{ #region 取值/存值 subscribe = root.Element(“subscribe”).Value;//是否关注 1 是关注
nickname = root.Element(“nickname”).Value; //昵称
sex = root.Element(“sex”).Value; //性别什么
headimgurl = root.Element(“headimgurl”).Value; //头像url
province = root.Element(“province”).Value;//地区
country = root.Element(“country”).Value;
language = root.Element(“language”).Value;
subscribe_time = root.Element(“subscribe_time”).Value;
DateTime create_time = Common.GetTime(subscribe_time);//将时间戳转换为当前时间
city = root.Element(“city”).Value;
user.OpenID = FromUserName;//OpenID即粉丝ID
user.PublicId = ToUserName; user.UserID = FromUserName;
user.NickName = nickname;
user.Sex = int.Parse(sex);
user.Subscribe = int.Parse(subscribe);
user.Country = country;
user.Province = province;
user.City = city;
user.CreateDate = create_time;
user.HeadimgUrl = headimgurl; //将user实体存入数据库中
bool show = _user.Add(user); #endregion }
} catch { throw (new ArgumentNullException());
}

上面代码中 AccessToken的实现，新建一个Context类即可

private static DateTime GetAccessToken\_Time; /// <summary>
    /// 过期时间为7200秒 /// </summary>
    private static int Expires\_Period = 7200; /// <summary>
    /// 
    /// </summary>
    private static string mAccessToken; public static string AppID = "换成相应公众号的即可"; public static string AppSecret = "换成相应公众号的即可"; /// <summary>
    /// 调用获取ACCESS\_TOKEN,包含判断是否过期 /// </summary>
    public static string AccessToken
    { get { //如果为空，或者过期，需要重新获取
            if (string.IsNullOrEmpty(mAccessToken) || HasExpired())
            { //获取access\_token
                mAccessToken = GetAccessToken(AppID, AppSecret);
            } return mAccessToken;
        }
    } /// <summary>
    /// 获取ACCESS\_TOKEN方法 /// </summary>
    /// <param name="appId"></param>
    /// <param name="appSecret"></param>
    /// <returns></returns>
    private static string GetAccessToken(string appId, string appSecret)
    { string url = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant\_type=client\_credential&appid={0}&secret={1}", appId, appSecret); string result = HttpUtility.GetData(url);

        XDocument doc \= XmlUtility.ParseJson(result, "root");
        XElement root \= doc.Root; if (root != null)
        {
            XElement access\_token \= root.Element("access\_token"); if (access\_token != null)
            {
                GetAccessToken\_Time \= DateTime.Now; if (root.Element("expires\_in") != null)
                {
                    Expires\_Period \= int.Parse(root.Element("expires\_in").Value);
                } return access\_token.Value;
            } else {
                GetAccessToken\_Time \= DateTime.MinValue;
            }
        } return null;
    } /// <summary>
    /// 判断Access\_token是否过期 /// </summary>
    /// <returns>bool</returns>
    private static bool HasExpired()
    { if (GetAccessToken\_Time != null)
        { //过期时间，允许有一定的误差，一分钟。获取时间消耗
            if (DateTime.Now > GetAccessToken\_Time.AddSeconds(Expires\_Period).AddSeconds(-60))
            { return true;
            }
        } return false;
    }

GetData的实现

public static string GetData(string url)
{ return SendGetHttpRequest(url, “application/x-www-form-urlencoded”);
}

ParseJson的实现

public static XDocument ParseJson(string json, string rootName)
{ return JsonConvert.DeserializeXNode(json, rootName);
}

关于第三步的 HttpUtility类中还有一些其他公用帮助方法，在这里一并放出，调用即可

///

/// 发送请求 ///

/// Url地址
/// 数据
public static string SendHttpRequest(string url, string data)
{ return SendPostHttpRequest(url, “application/x-www-form-urlencoded”, data);
} ///

///
///

///
///
public static string GetData(string url)
{ return SendGetHttpRequest(url, “application/x-www-form-urlencoded”);
} ///

/// 发送请求 ///

/// Url地址
/// 方法（post或get）
/// 数据类型
/// 数据
public static string SendPostHttpRequest(string url, string contentType, string requestData)
{
WebRequest request = (WebRequest)HttpWebRequest.Create(url);
request.Method = “POST”; byte[] postBytes = null;
request.ContentType = contentType;
postBytes = Encoding.UTF8.GetBytes(requestData);
request.ContentLength = postBytes.Length; using (Stream outstream = request.GetRequestStream())
{
outstream.Write(postBytes, 0, postBytes.Length);
} string result = string.Empty; using (WebResponse response = request.GetResponse())
{ if (response != null)
{ using (Stream stream = response.GetResponseStream())
{ using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
}

            }
        } return result;
    } /// <summary>
    /// 发送请求 /// </summary>
    /// <param name="url">Url地址</param>
    /// <param name="method">方法（post或get）</param>
    /// <param name="method">数据类型</param>
    /// <param name="requestData">数据</param>
    public static string SendGetHttpRequest(string url, string contentType)
    {
        WebRequest request \= (WebRequest)HttpWebRequest.Create(url);
        request.Method \= "GET";
        request.ContentType \= contentType; string result = string.Empty; using (WebResponse response = request.GetResponse())
        { if (response != null)
            { using (Stream stream = response.GetResponseStream())
                { using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                    {
                        result \= reader.ReadToEnd();
                    }
                }
            }
        } return result;
    }

View Code

顺便提下上文中用到的User类如下

public class Users
{ ///

/// 全局凭证唯一Id ///

public string OpenID { get; set; } ///

/// 公众号Id ///

public string PublicId { get; set; } ///

/// 用户Id ///

public string UserID { get; set; } ///

/// 昵称 ///

public string NickName { get; set; } ///

/// 性别 1是男 0是女 ///

public int Sex { get; set; } ///

/// 是否关注 1是关注 ///

public int Subscribe { get; set; } ///

/// 国家 ///

public string Country { get; set; } ///

/// 地区 ///

public string Province { get; set; } ///

/// 城市 ///

public string City { get; set; } ///

/// 关注时间 ///

public DateTime CreateDate { get; set; } ///

/// 用户头像 ///

public string HeadimgUrl { get; set; } ///

/// 第三方平台Id，可为空 ///

public string UnionID { get; set; } ///

/// 用户取消关注时间 ///

public DateTime Un_Subscribe_Time { get; set; }
}

演示效果

数据库中此时是存在10条数据的，当点击关注此公众号的时候，就将此用户的基本信息存入数据库了，数据库刷新后变成11条数据

网页授权流程

具体介绍依然可参考官网文档：网页授权

第一步，判断该用户是否获取授权，若没有授权，则跳转至授权页面，若授权，则获取基本信息

核心代码

    /// <summary>
    /// 获取授权用户的基本信息,包括头像，姓名，等等(推荐方法） /// </summary>
    /// <param name="accessToken">用户授权之后的accessToken</param>
    /// <param name="openid">用户授权之后的openid</param>
    /// <returns></returns>
    public static ShouQuanWeiXinUserInfo GetShouQuanMessage()
    { //先判断是否有获取到用户授权的Code,HttpContext.Current.Session\["ShouquanCode"\]
        if (HttpContext.Current.Session\["ShouquanCode"\] == null|| HttpContext.Current.Session\["ShouquanCode"\].ToString()=="")
        {
            HttpContext.Current.Session\["ShouquanCode"\] = "123"; //用户授权的Code

GetShouQuanCodeUrl(HttpContext.Current.Request.Url.AbsoluteUri);
} else if(HttpContext.Current.Request.QueryString[“code”] == null || HttpContext.Current.Request.QueryString[“code”] == “”)
{ //用户授权的Code
GetShouQuanCodeUrl(HttpContext.Current.Request.Url.AbsoluteUri);
} else { var model = ShouQuanAccessToken(HttpContext.Current.Request.QueryString[“code”]); var url = $”https://api.weixin.qq.com/sns/userinfo?access\_token={model.access\_token}&openid={model.openid}&lang=zh\_CN“; string gethtml = MyHttpHelper.HttpGet(url); var ac = JsonHelpers.ToObject(gethtml); return ac;
} return null;
}

其中，用户授权的code方法如下：

///

/// 重新获取用户授权的Code,可以获取用户的基本信息（头像，姓名，等等）(推荐用的方法） ///

/// 目标Url
///
public static void GetShouQuanCodeUrl(string url)
{ string CodeUrl = “”; //加密过的url
string value = HttpUtility.UrlEncode(url); //用户授权后的Code
CodeUrl = $”https://open.weixin.qq.com/connect/oauth2/authorize?appid={Appid}&redirect\_uri={value}&response\_type=code&scope=snsapi\_userinfo&state=STATE#wechat\_redirect“;
System.Web.HttpContext.Current.Response.Redirect(CodeUrl);//先跳转到微信的服务器，取得code后会跳回来这页面的
}

其中ShouQuanAccessToken方法

///

//用户授权之后，获取授权的Access_Token与基本的Access_Token是不同的(推荐方法）
///

/// 用户授权之后的Code
///
public static OauthAccessToken ShouQuanAccessToken(string code)
{ var url = $”https://api.weixin.qq.com/sns/oauth2/access\_token?appid={Appid}&secret={Secret}&code={code}&grant\_type=authorization\_code“; string gethtml = MyHttpHelper.HttpGet(url);
OauthAccessToken ac = new OauthAccessToken();
ac = JsonHelpers.ToObject(gethtml); return ac;
}

复制代码

用户实体

复制代码

public class OauthAccessToken
{ public string access_token { get; set; } public string expires_in { get; set; } public string refresh_token { get; set; } public string openid { get; set; } public string scope { get; set; }
}

复制代码

其中用到的MyHttpHelper公众类如下

///

/// Http连接操作帮助类 ///

public class HttpHelpers
{ #region 预定义方法或者变更
//默认的编码
private Encoding encoding = Encoding.Default; //Post数据编码
private Encoding postencoding = Encoding.Default; //HttpWebRequest对象用来发起请求
private HttpWebRequest request = null; //获取影响流的数据对象
private HttpWebResponse response = null; ///

/// 根据相传入的数据，得到相应页面数据 ///

/// 参数类对象
/// 返回HttpResult类型
public HttpResult GetHtml(HttpItem item)
{ //返回参数
HttpResult result = new HttpResult(); try { //准备参数
SetRequest(item);
} catch (Exception ex)
{ return new HttpResult() { Cookie = string.Empty, Header = null, Html = ex.Message, StatusDescription = “配置参数时出错：” + ex.Message };
} try { #region 得到请求的response
using (response = (HttpWebResponse)request.GetResponse())
{
result.StatusCode = response.StatusCode;
result.StatusDescription = response.StatusDescription;
result.Header = response.Headers; if (response.Cookies != null) result.CookieCollection = response.Cookies; if (response.Headers[“set-cookie”] != null) result.Cookie = response.Headers[“set-cookie”]; byte[] ResponseByte = null; using (MemoryStream _stream = new MemoryStream())
{ //GZIIP处理
if (response.ContentEncoding != null && response.ContentEncoding.Equals(“gzip”, StringComparison.InvariantCultureIgnoreCase))
{ //开始读取流并设置编码方式
new GZipStream(response.GetResponseStream(), CompressionMode.Decompress).CopyTo(_stream, 10240);
} else { //开始读取流并设置编码方式
response.GetResponseStream().CopyTo(_stream, 10240);
} //获取Byte
ResponseByte = _stream.ToArray();
} if (ResponseByte != null & ResponseByte.Length > 0)
{ //是否返回Byte类型数据
if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte; //从这里开始我们要无视编码了
if (encoding == null)
{
Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), “<meta([^<]*)charset=([^<]*)[\“‘]“, RegexOptions.IgnoreCase); string c = (meta.Groups.Count > 1) ? meta.Groups[2].Value.ToLower().Trim() : string.Empty; if (c.Length > 2)
{ try { if (c.IndexOf(“ “) > 0) c = c.Substring(0, c.IndexOf(“ “));
encoding = Encoding.GetEncoding(c.Replace(“\“”, “”).Replace(“‘“, “”).Replace(“;”, “”).Replace(“iso-8859-1”, “gbk”).Trim());
} catch { if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8; else encoding = Encoding.GetEncoding(response.CharacterSet);
}
} else { if (string.IsNullOrEmpty(response.CharacterSet)) encoding = Encoding.UTF8; else encoding = Encoding.GetEncoding(response.CharacterSet);
}
} //得到返回的HTML
result.Html = encoding.GetString(ResponseByte);
} else { //得到返回的HTML //result.Html = “本次请求并未返回任何数据”;
result.Html = “”;
}
} #endregion } catch (WebException ex)
{ //这里是在发生异常时返回的错误信息
response = (HttpWebResponse)ex.Response;
result.Html = ex.Message; if (response != null)
{
result.StatusCode = response.StatusCode;
result.StatusDescription = response.StatusDescription;
}
} catch (Exception ex)
{
result.Html = ex.Message;
} if (item.IsToLower) result.Html = result.Html.ToLower(); return result;
} ///

/// 为请求准备参数 ///

///参数列表
private void SetRequest(HttpItem item)
{ // 验证证书
SetCer(item); //设置Header参数
if (item.Header != null && item.Header.Count > 0) foreach (string key in item.Header.AllKeys)
{
request.Headers.Add(key, item.Header[key]);
} // 设置代理 //SetProxy(item);

        if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion;
        request.ServicePoint.Expect100Continue \= item.Expect100Continue; //请求方式Get或者Post
        request.Method = item.Method;
        request.Timeout \= item.Timeout;
        request.KeepAlive \= item.KeepAlive;
        request.ReadWriteTimeout \= item.ReadWriteTimeout; if (!string.IsNullOrWhiteSpace(item.Host))
        {
            request.Host \= item.Host;
        } //Accept
        request.Accept = item.Accept; //ContentType返回类型
        request.ContentType = item.ContentType; //UserAgent客户端的访问类型，包括浏览器版本和操作系统信息
        request.UserAgent = item.UserAgent; // 编码
        encoding = item.Encoding; //设置安全凭证
        request.Credentials = item.ICredentials; //设置Cookie

SetCookie(item); //来源地址
request.Referer = item.Referer; //是否执行跳转功能
request.AllowAutoRedirect = item.Allowautoredirect; //设置Post数据
SetPostData(item); //设置最大连接
if (item.Connectionlimit > 0) request.ServicePoint.ConnectionLimit = item.Connectionlimit;
} ///

/// 设置证书 ///

///
private void SetCer(HttpItem item)
{ if (!string.IsNullOrWhiteSpace(item.CerPath))
{ //这一句一定要写在创建连接的前面。使用回调的方法进行证书验证。
ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult); //初始化对像，并设置请求的URL地址
request = (HttpWebRequest)WebRequest.Create(item.URL);
SetCerList(item); //将证书添加到请求里
request.ClientCertificates.Add(new X509Certificate(item.CerPath));
} else { //初始化对像，并设置请求的URL地址
request = (HttpWebRequest)WebRequest.Create(item.URL);
SetCerList(item);
}
} ///

/// 设置多个证书 ///

///
private void SetCerList(HttpItem item)
{ if (item.ClentCertificates != null && item.ClentCertificates.Count > 0)
{ foreach (X509Certificate c in item.ClentCertificates)
{
request.ClientCertificates.Add(c);
}
}
} ///

/// 设置Cookie ///

/// Http参数
private void SetCookie(HttpItem item)
{ if (!string.IsNullOrEmpty(item.Cookie)) request.Headers[HttpRequestHeader.Cookie] = item.Cookie; //设置CookieCollection
if (item.ResultCookieType == ResultCookieType.CookieCollection)
{
request.CookieContainer = new CookieContainer(); if (item.CookieCollection != null && item.CookieCollection.Count > 0)
request.CookieContainer.Add(item.CookieCollection);
}
} ///

/// 设置Post数据 ///

/// Http参数
private void SetPostData(HttpItem item)
{ //验证在得到结果时是否有传入数据
if (request.Method.Trim().ToLower().Contains(“post”))
{ if (item.PostEncoding != null)
{
postencoding = item.PostEncoding;
} byte[] buffer = null; //写入Byte类型
if (item.PostDataType == PostDataType.Byte && item.PostdataByte != null && item.PostdataByte.Length > 0)
{ //验证在得到结果时是否有传入数据
buffer = item.PostdataByte;
}//写入文件
else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrWhiteSpace(item.Postdata))
{
StreamReader r = new StreamReader(item.Postdata, postencoding);
buffer = postencoding.GetBytes(r.ReadToEnd());
r.Close();
} //写入字符串
else if (!string.IsNullOrWhiteSpace(item.Postdata))
{
buffer = postencoding.GetBytes(item.Postdata);
} if (buffer != null)
{
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);
}
}
} ///

/// 设置代理 ///

/// 参数对象
private void SetProxy(HttpItem item)
{ bool isIeProxy = item.ProxyIp.ToLower().Contains(“ieproxy”); if (!string.IsNullOrWhiteSpace(item.ProxyIp) && !isIeProxy)
{ //设置代理服务器
if (item.ProxyIp.Contains(“:”))
{ string[] plist = item.ProxyIp.Split(‘:’);
WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim())); //建议连接
myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd); //给当前请求对象
request.Proxy = myProxy;
} else {
WebProxy myProxy = new WebProxy(item.ProxyIp, false); //建议连接
myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd); //给当前请求对象
request.Proxy = myProxy;
}
} else if (isIeProxy)
{ //设置为IE代理
} else {
request.Proxy = item.WebProxy;
}
} ///

/// 回调验证证书问题 ///

/// 流对象
/// 证书
/// X509Chain
/// SslPolicyErrors
/// bool
public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; } #endregion } ///

/// Http请求参考类 ///

public class HttpItem
{ ///

/// 请求URL必须填写 ///

public string URL { get; set; } string _Method = “GET”; ///

/// 请求方式默认为GET方式,当为POST方式时必须设置Postdata的值 ///

public string Method
{ get { return _Method; } set { _Method = value; }
} int _Timeout = 100000; ///

/// 默认请求超时时间 ///

public int Timeout
{ get { return _Timeout; } set { _Timeout = value; }
} int _ReadWriteTimeout = 30000; ///

/// 默认写入Post数据超时间 ///

public int ReadWriteTimeout
{ get { return _ReadWriteTimeout; } set { _ReadWriteTimeout = value; }
} ///

/// 设置Host的标头信息 ///

public string Host { get; set; }
Boolean _KeepAlive = true; ///

/// 获取或设置一个值，该值指示是否与 Internet 资源建立持久性连接默认为true。 ///

public Boolean KeepAlive
{ get { return _KeepAlive; } set { _KeepAlive = value; }
} string _Accept = “text/html, application/xhtml+xml, */*“; ///

/// 请求标头值默认为text/html, application/xhtml+xml, */* ///

public string Accept
{ get { return _Accept; } set { _Accept = value; }
} string _ContentType = “text/html”; ///

/// 请求返回类型默认 text/html ///

public string ContentType
{ get { return _ContentType; } set { _ContentType = value; }
} string _UserAgent = “Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)”; ///

/// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0) ///

public string UserAgent
{ get { return _UserAgent; } set { _UserAgent = value; }
} ///

/// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312 ///

public Encoding Encoding { get; set; } private PostDataType _PostDataType = PostDataType.String; ///

/// Post的数据类型 ///

public PostDataType PostDataType
{ get { return _PostDataType; } set { _PostDataType = value; }
} ///

/// Post请求时要发送的字符串Post数据 ///

public string Postdata { get; set; } ///

/// Post请求时要发送的Byte类型的Post数据 ///

public byte[] PostdataByte { get; set; } ///

/// Cookie对象集合 ///

public CookieCollection CookieCollection { get; set; } ///

/// 请求时的Cookie ///

public string Cookie { get; set; } ///

/// 来源地址，上次访问地址 ///

public string Referer { get; set; } ///

/// 证书绝对路径 ///

public string CerPath { get; set; } ///

/// 设置代理对象，不想使用IE默认配置就设置为Null，而且不要设置ProxyIp ///

public WebProxy WebProxy { get; set; } private Boolean isToLower = false; ///

/// 是否设置为全文小写，默认为不转化 ///

public Boolean IsToLower
{ get { return isToLower; } set { isToLower = value; }
} private Boolean allowautoredirect = false; ///

/// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转 ///

public Boolean Allowautoredirect
{ get { return allowautoredirect; } set { allowautoredirect = value; }
} private int connectionlimit = 1024; ///

/// 最大连接数 ///

public int Connectionlimit
{ get { return connectionlimit; } set { connectionlimit = value; }
} ///

/// 代理Proxy 服务器用户名 ///

public string ProxyUserName { get; set; } ///

/// 代理服务器密码 ///

public string ProxyPwd { get; set; } ///

/// 代理服务IP,如果要使用IE代理就设置为ieproxy ///

public string ProxyIp { get; set; } private ResultType resulttype = ResultType.String; ///

/// 设置返回类型String和Byte ///

public ResultType ResultType
{ get { return resulttype; } set { resulttype = value; }
} private WebHeaderCollection header = new WebHeaderCollection(); ///

/// header对象 ///

public WebHeaderCollection Header
{ get { return header; } set { header = value; }
} ///

// 获取或设置用于请求的 HTTP 版本。返回结果:用于请求的 HTTP 版本。默认为 System.Net.HttpVersion.Version11。
///

public Version ProtocolVersion { get; set; } private Boolean _expect100continue = true; ///

/// 获取或设置一个 System.Boolean 值，该值确定是否使用 100-Continue 行为。如果 POST 请求需要 100-Continue 响应，则为 true；否则为 false。默认值为 true。 ///

public Boolean Expect100Continue
{ get { return _expect100continue; } set { _expect100continue = value; }
} ///

/// 设置509证书集合 ///

public X509CertificateCollection ClentCertificates { get; set; } ///

/// 设置或获取Post参数编码,默认的为Default编码 ///

public Encoding PostEncoding { get; set; } private ResultCookieType _ResultCookieType = ResultCookieType.String; ///

/// Cookie返回类型,默认的是只返回字符串类型 ///

public ResultCookieType ResultCookieType
{ get { return _ResultCookieType; } set { _ResultCookieType = value; }
} private ICredentials _ICredentials = CredentialCache.DefaultCredentials; ///

/// 获取或设置请求的身份验证信息。 ///

public ICredentials ICredentials
{ get { return _ICredentials; } set { _ICredentials = value; }
}
} ///

/// Http返回参数类 ///

public class HttpResult
{ ///

/// Http请求返回的Cookie ///

public string Cookie { get; set; } ///

/// Cookie对象集合 ///

public CookieCollection CookieCollection { get; set; } ///

/// 返回的String类型数据只有ResultType.String时才返回数据，其它情况为空 ///

public string Html { get; set; } ///

/// 返回的Byte数组只有ResultType.Byte时才返回数据，其它情况为空 ///

public byte[] ResultByte { get; set; } ///

/// header对象 ///

public WebHeaderCollection Header { get; set; } ///

/// 返回状态说明 ///

public string StatusDescription { get; set; } ///

/// 返回状态码,默认为OK ///

public HttpStatusCode StatusCode { get; set; }
} ///

/// 返回类型 ///

public enum ResultType
{ ///

/// 表示只返回字符串只有Html有数据 ///

String, ///

/// 表示返回字符串和字节流 ResultByte和Html都有数据返回 ///

Byte
} ///

/// Post的数据格式默认为string ///

public enum PostDataType
{ ///

/// 字符串类型，这时编码Encoding可不设置 ///

String, ///

/// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空 ///

Byte, ///

/// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值 ///

FilePath
} ///

/// Cookie返回类型 ///

public enum ResultCookieType
{ ///

/// 只返回字符串类型的Cookie ///

String, ///

/// CookieCollection格式的Cookie集合同时也返回String类型的cookie ///

CookieCollection
} ///

HttpHelper的2次封装函数作者： ///

public class MyHttpHelper
{ #region 公共函数
///

返回 HTML 字符串的编码结果

/// 字符串
/// 编码结果
public static string HtmlEncode(string str)
{ if (string.IsNullOrEmpty(str))
{ return “”;
} return str.Length > 0 ? HttpUtility.HtmlEncode(str) : “”;
} ///

返回 HTML 字符串的解码结果

/// 字符串
/// 解码结果
public static string HtmlDecode(string str)
{ if (string.IsNullOrEmpty(str))
{ return “”;
} return str.Length > 0 ? HttpUtility.HtmlDecode(str) : “”;
} ///

/// 根据指定的编码对RUl进行解码 ///

/// 要解码的字符串
/// 要进行解码的编码方式
///
public static string UrlDecode(string str, Encoding encoding = null)
{ if (string.IsNullOrEmpty(str))
{ return “”;
} if (str.Length == 0)
{ return “”;
} if (encoding == null)
{ return HttpUtility.UrlDecode(str);
} else { return HttpUtility.UrlDecode(str, encoding);
}
} ///

根据指定的编码对URL进行编码

/// 要编码的URL
/// 要进行编码的编码方式
///
public static string UrlEncode(string str, Encoding encoding = null)
{ if (string.IsNullOrEmpty(str))
{ return “”;
} if (str.Length == 0)
{ return “”;
} if (encoding == null)
{ return HttpUtility.UrlEncode(str);
} else { return HttpUtility.UrlEncode(str, encoding);
}
} ///

/// 根据 charSet 返回 Encoding ///

/// “gb2312” or “utf-8”,默认: “” == “utf-8”
///
public static Encoding GetEncoding(string charSet)
{
Encoding en = Encoding.Default; if (charSet == “gb2312”)
{
en = Encoding.GetEncoding(“gb2312”);
} else if (charSet == “utf-8”)
{
en = Encoding.UTF8;
} return en;
} #endregion

    #region Post

    /// <summary>HTTP Get方式请求数据</summary>
    /// <param name="url">URL</param>
    /// <param name="param">user=123123 & pwd=1231313"</param>
    /// <param name="charSet">"gb2312" or "utf-8",默认: "" ==  "utf-8"</param>
    /// <returns></returns>
    public static string HttpPost(string url, string param, string charSet = "utf-8")
    {
        HttpHelpers http \= new HttpHelpers();
        HttpItem item \= new HttpItem()
        {
            URL \= url,
            Encoding \= GetEncoding(charSet),//编码格式（utf-8,gb2312,gbk）     可选项 默认类会自动识别
            Method = "post",//URL     可选项 默认为Get
            Postdata = param
        }; //得到HTML代码
        HttpResult result = http.GetHtml(item); //取出返回的Cookie //string cookie = result.Cookie; //返回的Html内容
        string html = result.Html; if (result.StatusCode == System.Net.HttpStatusCode.OK)
        { return html;
        } //string statusCodeDescription = result.StatusDescription;
        return "";
    } #endregion

    #region Get
    /// <summary>HTTP Get方式请求数据</summary>
    /// <param name="url">URL</param>
    /// <param name="charSet">"gb2312" or "utf-8",默认: "" ==  "utf-8"</param>
    /// <returns></returns>
    public static string HttpGet(string url, string charSet = "utf-8")
    {
        HttpHelpers http \= new HttpHelpers();
        HttpItem item \= new HttpItem()
        {
            URL \= url,
            Encoding \= GetEncoding(charSet),
            Method \= "get" }; //得到HTML代码
        HttpResult result = http.GetHtml(item); //取出返回的Cookie //string cookie = result.Cookie; //返回的Html内容
        string html = result.Html; if (result.StatusCode == System.Net.HttpStatusCode.OK)
        { return html;
        } //string statusCodeDescription = result.StatusDescription;
        return "";
    } /// <summary>POST客服消息/summary> /// <param name="url">URL</param>
    /// <param name="postData">内容</param>
    /// <returns>消息状态</returns>
    public static string GetPage(string posturl, string postData)
    {
        Stream outstream \= null;
        Stream instream \= null;
        StreamReader sr \= null;
        HttpWebResponse response \= null;
        HttpWebRequest request \= null;
        Encoding encoding \= Encoding.UTF8; byte\[\] data = encoding.GetBytes(postData); // 准备请求... 
        try { // 设置参数 
            request = WebRequest.Create(posturl) as HttpWebRequest;
            CookieContainer cookieContainer \= new CookieContainer();
            request.CookieContainer \= cookieContainer;
            request.AllowAutoRedirect \= true;
            request.Method \= "POST";
            request.ContentType \= "application/x-www-form-urlencoded";
            request.ContentLength \= data.Length;
            outstream \= request.GetRequestStream();
            outstream.Write(data, 0, data.Length);
            outstream.Close(); //发送请求并获取相应回应数据 
            response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 
            instream = response.GetResponseStream();
            sr \= new StreamReader(instream, encoding); //返回结果网页（html）代码 
            string content = sr.ReadToEnd(); string err = string.Empty; return content;
        } catch (Exception ex)
        { string err = ex.Message; return err;
        }
    } #endregion }

View Code

封装的JsonHelpers类如下

#region 通用

    /// <summary>检查字符串是否json格式</summary>
    /// <param name="jText"></param>
    /// <returns></returns>
    public static bool IsJson(string jText)
    { if (string.IsNullOrEmpty(jText) || jText.Length < 3)
        { return false;
        } if (jText.Substring(0, 2) == "{\\"" || jText.Substring(0, 3) == "\[{\\"")
        { return true;
        } return false;
    } /// <summary>检查字符串是否json格式数组</summary>
    /// <param name="jText"></param>
    /// <returns></returns>
    public static bool IsJsonRs(string jText)
    { if (string.IsNullOrEmpty(jText) || jText.Length < 3)
        { return false;
        } if (jText.Substring(0, 3) == "\[{\\"")
        { return true;
        } return false;
    } /// <summary>格式化 json</summary>
    /// <param name="jText"></param>
    /// <returns></returns>
    public static string Fmt\_Null(string jText)
    { return StringHelper.ReplaceString(jText, ":null,", ":\\"\\",", true);
    } /// <summary>格式化 json ，删除左右二边的\[\]</summary>
    /// <param name="jText"></param>
    /// <returns></returns>
    public static string Fmt\_Rs(string jText)
    {
        jText \= jText.Trim();
        jText \= jText.Trim('\[');
        jText \= jText.Trim('\]'); return jText;
    } #endregion

    #region Json序列化

    /// <summary>序列化</summary>
    /// <param name="obj">object </param>
    /// <returns></returns>
    public static string ToJson(object obj)
    { var idtc = new Newtonsoft.Json.Converters.IsoDateTimeConverter { DateTimeFormat = "yyyy-MM-dd hh:mm:ss" }; return JsonConvert.SerializeObject(obj, idtc);
    } /// <summary>序列化--sql</summary>
    /// <param name="dt">DataTable</param>
    /// <returns></returns>   
    public static string ToJson\_FromSQL(DataTable dt)
    { string ss = ToJson(dt);
        dt.Dispose(); return ss;
    } #endregion

    #region Json反序列化

    /// <summary>反序列化</summary>
    /// <param name="jText"></param>
    /// <returns></returns>      
    public static DataTable ToDataTable(string jText)
    { if (string.IsNullOrEmpty(jText))
        { return null;
        } else { try { return JsonConvert.DeserializeObject<DataTable>(jText);
            } catch { return null;
            }
        }
    } /// <summary>反序列化</summary>
    /// <typeparam name="T">类型</typeparam>
    /// <param name="jText">json字符串</param>
    /// <returns>类型数据</returns>
    public static T ToObject<T>(string jText)
    { return (T)JsonConvert.DeserializeObject(jText, typeof(T));
    } #endregion

View Code

其中，如果是VS2015以下的，可以将url字符串改成string.format(“”)方式

调用取值的方式

效果展示

点击公众号链接效果如下：

未完待续，持续填坑中。。。

__EOF__

作　　者：**潇十一郎**
出　　处：https://www.cnblogs.com/zhangxiaoyong/p/6270768.html
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Chemmy's Blog

目录

（一）微信公众号开发之VS远程调试

（二）微信公众号开发之基础梳理

（三）微信公众号开发之自动消息回复和自定义菜单

（四）微信公众号开发之网页授权获取用户基本信息

（五）微信公众号开发之网页中及时获取当前用户Openid及注意事项

（六）微信公众号开发之扫码支付

（七）微信公众号开发之公众号支付

（八）微信公众号开发之现金红包

（九）微信公众号开发之回复图文消息(被动)

前言

静默授权

演示效果

网页授权流程

效果展示