コード例 #1
0
 /// <summary>
 /// 为请求准备参数
 /// </summary>
 ///<param name="objhttpItem">参数列表</param>
 /// <param name="_Encoding">读取数据时的编码方式</param>
 private void SetRequest(HttpItem objhttpItem)
 {
     // 验证证书
     SetCer(objhttpItem);
     //设置Header参数
     if (objhttpItem.Header != null)
     {
         try
         {
             request.Headers = objhttpItem.Header;
         }
         catch
         {
             return;
         }
     }
     // 设置代理
     SetProxy(objhttpItem);
     //请求方式Get或者Post
     request.Method = objhttpItem.Method;
     request.Timeout = objhttpItem.Timeout;
     request.ReadWriteTimeout = objhttpItem.ReadWriteTimeout;
     //Accept
     request.Accept = objhttpItem.Accept;
     //ContentType返回类型
     request.ContentType = objhttpItem.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 = objhttpItem.UserAgent;
     // 编码
     SetEncoding(objhttpItem);
     //设置Cookie
     SetCookie(objhttpItem);
     //来源地址
     request.Referer = objhttpItem.Referer;
     //是否执行跳转功能
     request.AllowAutoRedirect = objhttpItem.Allowautoredirect;
     //设置Post数据
     SetPostData(objhttpItem);
     //设置最大连接
     if (objhttpItem.Connectionlimit > 0)
     {
         request.ServicePoint.ConnectionLimit = objhttpItem.Connectionlimit;
     }
 }
コード例 #2
0
 ///<summary>
 ///采用https协议访问网络,根据传入的URl地址,得到响应的数据字符串。
 ///</summary>
 ///<param name="objhttpItem">参数列表</param>
 ///<returns>String类型的数据</returns>
 public HttpResult GetHtml(HttpItem objhttpItem)
 {
     //准备参数
     SetRequest(objhttpItem);
     //调用专门读取数据的类
     return GetHttpRequestData(objhttpItem);
 }
コード例 #3
0
 /// <summary>
 /// 设置Post数据
 /// </summary>
 /// <param name="objhttpItem">Http参数</param>
 private void SetPostData(HttpItem objhttpItem)
 {
     //验证在得到结果时是否有传入数据
     if (request.Method.Trim().ToLower().Contains("post"))
     {
         //写入Byte类型
         if (objhttpItem.PostDataType == PostDataType.Byte)
         {
             //验证在得到结果时是否有传入数据
             if (objhttpItem.PostdataByte != null && objhttpItem.PostdataByte.Length > 0)
             {
                 request.ContentLength = objhttpItem.PostdataByte.Length;
                 request.GetRequestStream().Write(objhttpItem.PostdataByte, 0, objhttpItem.PostdataByte.Length);
             }
         }//写入文件
         else if (objhttpItem.PostDataType == PostDataType.FilePath)
         {
             StreamReader r = new StreamReader(objhttpItem.Postdata, encoding);
             byte[] buffer = Encoding.Default.GetBytes(r.ReadToEnd());
             r.Close();
             request.ContentLength = buffer.Length;
             request.GetRequestStream().Write(buffer, 0, buffer.Length);
         }
         else
         {
             //验证在得到结果时是否有传入数据
             if (!string.IsNullOrEmpty(objhttpItem.Postdata))
             {
                 byte[] buffer = Encoding.Default.GetBytes(objhttpItem.Postdata);
                 request.ContentLength = buffer.Length;
                 request.GetRequestStream().Write(buffer, 0, buffer.Length);
             }
         }
     }
 }
コード例 #4
0
 /// <summary>
 /// 设置代理
 /// </summary>
 /// <param name="objhttpItem">参数对象</param>
 private void SetProxy(HttpItem objhttpItem)
 {
     if (string.IsNullOrEmpty(objhttpItem.ProxyUserName) && string.IsNullOrEmpty(objhttpItem.ProxyPwd) && string.IsNullOrEmpty(objhttpItem.ProxyIp))
     {
         //不需要设置
     }
     else
     {
         //设置代理服务器
         WebProxy myProxy = new WebProxy(objhttpItem.ProxyIp, false);
         //建议连接
         myProxy.Credentials = new NetworkCredential(objhttpItem.ProxyUserName, objhttpItem.ProxyPwd);
         //给当前请求对象
         request.Proxy = myProxy;
         //设置安全凭证
         request.Credentials = CredentialCache.DefaultNetworkCredentials;
     }
 }
コード例 #5
0
 /// <summary>
 /// 设置编码
 /// </summary>
 /// <param name="objhttpItem">Http参数</param>
 private void SetEncoding(HttpItem objhttpItem)
 {
     if (string.IsNullOrEmpty(objhttpItem.Encoding) || objhttpItem.Encoding.ToLower().Trim() == "null")
     {
         //读取数据时的编码方式
         encoding = null;
     }
     else
     {
         //读取数据时的编码方式
         encoding = System.Text.Encoding.GetEncoding(objhttpItem.Encoding);
     }
 }
コード例 #6
0
        /// <summary>
        /// 设置Cookie
        /// </summary>
        /// <param name="objhttpItem">Http参数</param>
        private void SetCookie(HttpItem objhttpItem)
        {
            //获取当前的cookie

            if (!string.IsNullOrEmpty(objhttpItem.Cookie))
            {
                //Cookie
                request.Headers[HttpRequestHeader.Cookie] = objhttpItem.Cookie;
            }
            //设置Cookie

            if (objhttpItem.CookieCollection != null)
            {
                request.CookieContainer = new CookieContainer();
                request.CookieContainer.Add(objhttpItem.CookieCollection);
            }
            if (objhttpItem.Cc != null)
            {
                request.CookieContainer = objhttpItem.Cc;
            }

            //request.CookieContainer = cc;
            //chkCookie(cc, objhttpItem);
        }
コード例 #7
0
 /// <summary>
 /// 设置证书
 /// </summary>
 /// <param name="objhttpItem"></param>
 private void SetCer(HttpItem objhttpItem)
 {
     if (!string.IsNullOrEmpty(objhttpItem.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(GetUrl(objhttpItem.URL));
         //创建证书文件
         X509Certificate objx509 = new X509Certificate(objhttpItem.CerPath);
         //添加到请求里
         request.ClientCertificates.Add(objx509);
     }
     else
     {
         //初始化对像,并设置请求的URL地址
         try
         {
             request = (HttpWebRequest)WebRequest.Create(GetUrl(objhttpItem.URL));
         }
         catch
         {
             return;
         }
     }
 }
コード例 #8
0
        /// <summary>
        /// 根据相传入的数据,得到相应页面数据
        /// </summary>
        /// <param name="strPostdata">传入的数据Post方式,get方式传NUll或者空字符串都可以</param>
        /// <returns>string类型的响应数据</returns>
        private HttpResult GetHttpRequestData(HttpItem objhttpitem)
        {
            //返回参数
            HttpResult result = new HttpResult();
            try
            {
                #region 得到请求的response
                result.CookieCollection = new CookieCollection();
                response = (HttpWebResponse)request.GetResponse();

                result.Header = response.Headers;
                if (response.Cookies != null)
                {
                    result.CookieCollection = response.Cookies;
                }
                if (response.Headers["set-cookie"] != null)
                {
                    result.Cookie = response.Headers["set-cookie"];
                }
                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);
                    //.net4.0以下写法
                    _stream = GetMemoryStream(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress));
                }
                else
                {
                    //开始读取流并设置编码方式
                    //response.GetResponseStream().CopyTo(_stream, 10240);
                    //.net4.0以下写法
                    _stream = GetMemoryStream(response.GetResponseStream());

                }
                //获取Byte
                byte[] RawResponse = _stream.ToArray();
                //是否返回Byte类型数据
                if (objhttpitem.ResultType == ResultType.Byte)
                {
                    result.ResultByte = RawResponse;
                    return result;
                }
                //无视编码
                if (encoding == null)
                {
                    string temp = Encoding.Default.GetString(RawResponse, 0, RawResponse.Length);
                    //<meta(.*?)charset([\s]?)=[^>](.*?)>
                    //<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
                    Match meta = Regex.Match(temp, "<meta([^<]*)charset=([^<]*)[\"']", RegexOptions.IgnoreCase | RegexOptions.Multiline);
                    string charter = (meta.Groups.Count > 2) ? meta.Groups[2].Value : string.Empty;
                    charter = charter.Replace("\"", string.Empty).Replace("'", string.Empty).Replace(";", string.Empty);
                    if (charter.Length > 0)
                    {
                        charter = charter.ToLower().Replace("iso-8859-1", "gbk").Split(' ')[0];
                        encoding = Encoding.GetEncoding(charter);
                    }
                    else
                    {

                        if (response.CharacterSet != null)
                        {
                            if (response.CharacterSet.ToLower().Trim() == "iso-8859-1")
                            {
                                encoding = Encoding.GetEncoding("gbk");
                            }
                            else
                            {
                                if (string.IsNullOrEmpty(response.CharacterSet.Trim()))
                                {
                                    encoding = Encoding.UTF8;
                                }
                                else
                                {
                                    encoding = Encoding.GetEncoding(response.CharacterSet);
                                }
                            }
                        }
                    }
                }
                //得到返回的HTML
                try
                {
                    result.Html = encoding.GetString(RawResponse);
                    _stream.Close();
                    response.Close();
                }
                catch
                {
                    return null;
                }
                //最后释放流

                #endregion

            }
            catch (WebException ex)
            {
                //这里是在发生异常时返回的错误信息
                result.Html = "String Error";
                response = (HttpWebResponse)ex.Response;
                return result;
            }
            if (objhttpitem.IsToLower)
            {
                result.Html = result.Html;//.ToLower();
            }
            return result;
        }
コード例 #9
0
        private void chkCookie(CookieContainer cc, HttpItem objhttpItem)
        {
            if (cc.Count > 0)
            {
                cool = cc.GetCookies(new Uri(objhttpItem.URL))[0].Value;
                if (objhttpItem.CookieCollection != null)
                {
                    oldcool = objhttpItem.CookieCollection[0].Value;
                }
                else if (newcool.Contains(oldcool) && oldcool.Length > 0 && newcool.Length > 0)
                {
                    // throw new WebException("cookie是用户传来的上一次内容", WebExceptionStatus.UnknownError);
                    System.Windows.Forms.MessageBox.Show("cookie是用户传来的上一次内容");
                    return;
                    //throw new Exception("cookie是用户传来的上一次内容");

                }
                else if (newcool.Contains(cool) && cool.Length > 0 && newcool.Length > 0)
                {
                    System.Windows.Forms.MessageBox.Show("本次请求的cookie与上次相同");
                    return;
                    //throw new WebException("本次请求的cookie与上次相同");
                }
                else
                {
                    oldcool = cool;
                    newcool = oldcool;
                }
            }
        }