• HttpHelps类,用来实现Http访问,Post或者Get方式的,直接访问,带Cookie的,带证书的等方式,可以设置代理


    原文地址:http://blog.csdn.net/cdefg198/article/details/8315438

    万能框架:http://www.sufeinet.com/forum.php?mod=viewthread&tid=2002 

    <span style="font-family:Microsoft YaHei;">/// <summary>
    /// 类说明:HttpHelps类,用来实现Http访问,Post或者Get方式的,直接访问,带Cookie的,带证书的等方式,可以设置代理
    /// 编码日期:2011-09-20
    /// 编 码 人:苏飞
    /// 联系方式:361983679  
    /// 更新网址:http://www.cckan.net/thread-3-1-1.html
    /// 修改日期:2012-12-09
    /// </summary>
    
    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Net;
    using System.IO;
    using System.Text.RegularExpressions;
    using System.IO.Compression;
    using System.Security.Cryptography.X509Certificates;
    using System.Net.Security;
    
    namespace DotNet.Utilities
    {
        /// <summary>
        /// Http连接操作帮助类 
        /// <example>
        /// 下面是个例子大家可以看一下
        /// 
        ///  HttpHelper http = new HttpHelper();
        ///  HttpItem item = new HttpItem()
        ///  {
        ///   URL = "http://www.cckan.net",//URL     必需项
        ///   Encoding = "gbk",//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
        ///   Method = "get",//URL     可选项 默认为Get
        ///   //Timeout = 100000,//连接超时时间     可选项默认为100000
        ///   //ReadWriteTimeout = 30000,//写入Post数据超时时间     可选项默认为30000
        ///   //IsToLower = false,//得到的HTML代码是否转成小写     可选项默认转小写
        ///   Cookie = "",//字符串Cookie     可选项
        ///   // UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)",//用户的浏览器类型,版本,操作系统     可选项有默认值
        ///   // Accept = "text/html, application/xhtml+xml, */*",//    可选项有默认值
        ///   // ContentType = "text/html",//返回类型    可选项有默认值
        ///   Referer = "http://www.cckan.net",//来源URL     可选项
        ///   //Allowautoredirect = true,//是否根据301跳转     可选项
        ///   //CerPath = "d:\123.cer",//证书绝对路径     可选项不需要证书时可以不写这个参数
        ///   //Connectionlimit = 1024,//最大连接数     可选项 默认为1024
        ///   //Postdata = "username=sufei&pwd=cckan.net",//Post数据     可选项GET时不需要写
        ///   //ProxyIp = "192.168.1.105",//代理服务器ID     可选项 不需要代理 时可以不设置这三个参数
        ///   //ProxyPwd = "123456",//代理服务器密码     可选项
        ///   // ProxyUserName = "administrator",//代理服务器账户名     可选项
        ///  };
        ///  //得到HTML代码
        ///  string html = http.GetHtml(item);
        ///
        ///  //取出返回的Cookie
        ///  string cookie = item.Cookie;
        ///  //取出返回的Request
        ///  HttpWebRequest request = item.Request;
        ///  //取出返回的Response
        ///  HttpWebResponse response = item.Response;
        ///  //取出返回的Reader
        ///  StreamReader reader = item.Reader;
        ///  //取出返回的Headers
        ///  WebHeaderCollection header = response.Headers;
        /// </example>
        /// </summary>
        public class HttpHelper
        {
            #region 预定义方法或者变更
    
            //默认的编码
            private Encoding encoding = 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;
            //读取流的对象
            private StreamReader reader = null;
            //需要返回的数据对象
            private string returnData = "String Error";
    
            /// <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 string GetHttpRequestData(HttpItem objhttpitem)
            {
                try
                {
                    #region 得到请求的response
    
                    using (response = (HttpWebResponse)request.GetResponse())
                    {
                        if (response.Cookies != null)
                        {
                            objhttpitem.CookieCollection = response.Cookies;
                        }
                        if (response.Headers["set-cookie"] != null)
                        {
                            objhttpitem.Cookie = response.Headers["set-cookie"];
                        }
    
                        objhttpitem.Response = response;
                        objhttpitem.Request = request;
                        //从这里开始我们要无视编码了
                        if (encoding == null)
                        {
                            MemoryStream _stream = new MemoryStream();
                            if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
                            {
                                objhttpitem.Reader = reader;
                                //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(response.GetResponseStream());
                            }
                            else
                            {
                                objhttpitem.Reader = reader;
                                //response.GetResponseStream().CopyTo(_stream, 10240);
                                // .net4.0以下写法
                                _stream = GetMemoryStream(response.GetResponseStream());
                            }
                            byte[] RawResponse = _stream.ToArray();
                            string temp = Encoding.Default.GetString(RawResponse, 0, RawResponse.Length);
                            //<meta(.*?)charset([s]?)=[^>](.*?)>
                            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");
                                encoding = Encoding.GetEncoding(charter);
                            }
                            else
                            {
                                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);
                                    }
                                }
                            }
                            returnData = encoding.GetString(RawResponse);
                        }
                        else
                        {
                            if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
                            {
                                //开始读取流并设置编码方式
                                using (reader = new StreamReader(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress), encoding))
                                {
                                    objhttpitem.Reader = reader;
                                    returnData = reader.ReadToEnd();
    
                                }
                            }
                            else
                            {
                                //开始读取流并设置编码方式
                                using (reader = new StreamReader(response.GetResponseStream(), encoding))
                                {
                                    objhttpitem.Reader = reader;
                                    returnData = reader.ReadToEnd();
                                }
                            }
                        }
                    }
    
                    #endregion
                }
                catch (WebException ex)
                {
                    //这里是在发生异常时返回的错误信息
                    returnData = "String Error";
                    response = (HttpWebResponse)ex.Response;
                    objhttpitem.Response = response;
                }
                if (objhttpitem.IsToLower)
                {
                    returnData = returnData.ToLower();
                }
                return returnData;
            }
    
            /// <summary>
            /// 4.0以下.net版本取数据使用
            /// </summary>
            /// <param name="streamResponse"></param>
            private static MemoryStream GetMemoryStream(Stream streamResponse)
            {
                MemoryStream _stream = new MemoryStream();
                int Length = 256;
                Byte[] buffer = new Byte[Length];
                int bytesRead = streamResponse.Read(buffer, 0, Length);
                // write the required bytes  
                while (bytesRead > 0)
                {
                    _stream.Write(buffer, 0, bytesRead);
                    bytesRead = streamResponse.Read(buffer, 0, Length);
                }
                return _stream;
            }
    
            /// <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)
            {
                #region 验证证书
    
                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
                    request = (HttpWebRequest)WebRequest.Create(GetUrl(objhttpItem.URL));
                }
                #endregion
    
                #region 设置代理
                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;
                }
                #endregion
    
                //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;
    
                #region 编码
                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);
                }
                #endregion
    
                #region Cookie
                if (!string.IsNullOrEmpty(objhttpItem.Cookie))
                {
                    //Cookie
                    request.Headers[HttpRequestHeader.Cookie] = objhttpItem.Cookie;
                }
    
                //设置Cookie
                if (objhttpItem.CookieCollection != null)
                {
                    if (request.CookieContainer.Count == 0)
                    {
                        request.CookieContainer.Add(objhttpItem.CookieCollection);
                    }
                    else
                    {
                        request.CookieContainer = new CookieContainer();
                        request.CookieContainer.Add(objhttpItem.CookieCollection);
                    }
                }
                #endregion
    
                //来源地址
                request.Referer = objhttpItem.Referer;
                //是否执行跳转功能
                request.AllowAutoRedirect = objhttpItem.Allowautoredirect;
    
                #region Post数据
                //验证在得到结果时是否有传入数据
                if (!string.IsNullOrEmpty(objhttpItem.Postdata) && request.Method.Trim().ToLower().Contains("post"))
                {
                    byte[] buffer = Encoding.Default.GetBytes(objhttpItem.Postdata);
                    request.ContentLength = buffer.Length;
                    request.GetRequestStream().Write(buffer, 0, buffer.Length);
                }
                #endregion
    
                //设置最大连接
                if (objhttpItem.Connectionlimit > 0)
                {
                    request.ServicePoint.ConnectionLimit = objhttpItem.Connectionlimit;
                }
            }
    
            //回调验证证书问题
            public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
            {
                // 总是接受    
                return true;
            }
    
            #endregion
    
            #region 普通类型
    
            /// <summary>    
            /// 传入一个正确或不正确的URl,返回正确的URL
            /// </summary>    
            /// <param name="URL">url</param>   
            /// <returns>
            /// </returns>    
            public static string GetUrl(string URL)
            {
                if (!(URL.Contains("http://") || URL.Contains("https://")))
                {
                    URL = "http://" + URL;
                }
                return URL;
            }
    
            ///<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 string GetHtml(HttpItem objhttpItem)
            {
                //准备参数
                SetRequest(objhttpItem);
    
                //调用专门读取数据的类
                return GetHttpRequestData(objhttpItem);
            }
            #endregion
        }
    
        /// <summary>
        /// Http请求参考类 
        /// </summary>
        public class HttpItem
        {
            string _URL;
            /// <summary>
            /// 请求URL必须填写
            /// </summary>
            public string URL
            {
                get { return _URL; }
                set { _URL = value; }
            }
    
            string _Method = "GET";
            /// <summary>
            /// 请求方式默认为GET方式
            /// </summary>
            public string Method
            {
                get { return _Method; }
                set { _Method = value; }
            }
    
            int _Timeout = 100000;
            /// <summary>
            /// 默认请求超时时间
            /// </summary>
            public int Timeout
            {
                get { return _Timeout; }
                set { _Timeout = value; }
            }
    
            int _ReadWriteTimeout = 30000;
            /// <summary>
            /// 默认写入Post数据超时间
            /// </summary>
            public int ReadWriteTimeout
            {
                get { return _ReadWriteTimeout; }
                set { _ReadWriteTimeout = value; }
            }
    
            string _Accept = "text/html, application/xhtml+xml, */*";
            /// <summary>
            /// 请求标头值 默认为text/html, application/xhtml+xml, */*
            /// </summary>
            public string Accept
            {
                get { return _Accept; }
                set { _Accept = value; }
            }
    
            string _ContentType = "text/html";
            /// <summary>
            /// 请求返回类型默认 text/html
            /// </summary>
            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)";
            /// <summary>
            /// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
            /// </summary>
            public string UserAgent
            {
                get { return _UserAgent; }
                set { _UserAgent = value; }
            }
    
            string _Encoding = string.Empty;
            /// <summary>
            /// 返回数据编码默认为NUll,可以自动识别
            /// </summary>
            public string Encoding
            {
                get { return _Encoding; }
                set { _Encoding = value; }
            }
    
            string _Postdata;
            /// <summary>
            /// Post请求时要发送的Post数据
            /// </summary>
            public string Postdata
            {
                get { return _Postdata; }
                set { _Postdata = value; }
            }
    
            string _Cookie = string.Empty;
            /// <summary>
            /// 请求时的Cookie
            /// </summary>
            public string Cookie
            {
                get { return _Cookie; }
                set { _Cookie = value; }
            }
    
            string _Referer = string.Empty;
            /// <summary>
            /// 来源地址,上次访问地址
            /// </summary>
            public string Referer
            {
                get { return _Referer; }
                set { _Referer = value; }
            }
    
            string _CerPath = string.Empty;
            /// <summary>
            /// 证书绝对路径
            /// </summary>
            public string CerPath
            {
                get { return _CerPath; }
                set { _CerPath = value; }
            }
    
            CookieCollection cookiecollection = null;
            /// <summary>
            /// Cookie对象集合
            /// </summary>
            public CookieCollection CookieCollection
            {
                get { return cookiecollection; }
                set { cookiecollection = value; }
            }
    
            private HttpWebRequest request = null;
            /// <summary>
            /// HttpWebRequest对象用来发起请求
            /// </summary>
            public HttpWebRequest Request
            {
                get { return request; }
                set { request = value; }
            }
    
            private HttpWebResponse response = null;
            /// <summary>
            /// 获取影响流的数据对象
            /// </summary>
            public HttpWebResponse Response
            {
                get { return response; }
                set { response = value; }
            }
    
            private Boolean isToLower = true;
            /// <summary>
            /// 是否设置为全文小写
            /// </summary>
            public Boolean IsToLower
            {
                get { return isToLower; }
                set { isToLower = value; }
            }
    
            private StreamReader reader = null;
            /// <summary>
            ///  读取流的对象
            /// </summary>
            public StreamReader Reader
            {
                get { return reader; }
                set { reader = value; }
            }
    
            private Boolean allowautoredirect = true;
            /// <summary>
            /// 支持跳转页面,查询结果将是跳转后的页面
            /// </summary>
            public Boolean Allowautoredirect
            {
                get { return allowautoredirect; }
                set { allowautoredirect = value; }
            }
    
            private int connectionlimit = 1024;
            /// <summary>
            /// 最大连接数
            /// </summary>
            public int Connectionlimit
            {
                get { return connectionlimit; }
                set { connectionlimit = value; }
            }
    
            private string proxyusername = string.Empty;
            /// <summary>
            /// 代理Proxy 服务器用户名
            /// </summary>
            public string ProxyUserName
            {
                get { return proxyusername; }
                set { proxyusername = value; }
            }
    
            private string proxypwd = string.Empty;
            /// <summary>
            /// 代理 服务器密码
            /// </summary>
            public string ProxyPwd
            {
                get { return proxypwd; }
                set { proxypwd = value; }
            }
    
            private string proxyip = string.Empty;
            /// <summary>
            /// 代理 服务IP
            /// </summary>
            public string ProxyIp
            {
                get { return proxyip; }
                set { proxyip = value; }
            }
        }
    }</span>
  • 相关阅读:
    python类组合
    python 反射 (自省)
    继承 继承 多态
    与属性的深入交流
    与对象的第一次相遇
    MySQL 主从复制
    Redis 配置项
    Redis Cluster 部署
    网络协议和管理
    字符串
  • 原文地址:https://www.cnblogs.com/niaowo/p/4026136.html
Copyright © 2020-2023  润新知