最近一直都在搞网站抓取方面的开发，闲着无聊逛逛论坛，发现有些帖子还是写的相当不错的，只是一篇一篇的点进去比较麻烦，于是就写了个小软件只是为了方便查看博客园和****上的优秀文章。其实这个还可以拓展的，比如说可以添加RSS功能，查看新闻网站的新闻。代码比较简单，可以考虑用个工厂模式。
写的比较乱，都不敢上代码了。求大神喷！
2013-6-28号更新
1、添加了皮肤
2013-6-29号更新
1、解决了ListView控件添加数据闪烁问题。
2、取消皮肤加快数据加载速度
3、优化了浏览文章体验
里面有几个类库非常不错，想要的可以拿去。
///
/// 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
/// 重要提示：请不要自行修改本类，如果因为你自己修改后将无法升级到新版本。如果确实有什么问题请到官方网站提建议，
/// 我们一定会及时修改
/// 编码日期：2011-09-20
/// 编 码 人：苏飞
/// 联系方式：361983679
/// 官方网址：http://www.sufeinet.com/thread-3-1-1.html
/// 修改日期：2013-04-14
///
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 Common.PageHelper
{
///
/// Http连接操作帮助类
///
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;
///
/// 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
private HttpResult GetHttpRequestData(HttpItem objhttpitem)
{
//返回参数
HttpResult result = new HttpResult();
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"];
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();
_stream.Close();
//是否返回Byte类型数据
if (objhttpitem.ResultType == ResultType.Byte)
result.ResultByte = RawResponse;
//从这里开始我们要无视编码了
if (encoding == null)
{
Match meta = Regex.Match(Encoding.Default.GetString(RawResponse), "<meta([^<]*)charset=([^<]*)[\"']", RegexOptions.IgnoreCase);
string charter = (meta.Groups.Count > 2) ? meta.Groups[2].Value.ToLower() : string.Empty;
charter = charter.Replace("\"", "").Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk");
if (charter.Length > 2)
encoding = Encoding.GetEncoding(charter);
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(RawResponse);
}
#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;
result.StatusCode = response.StatusCode;
result.StatusDescription = response.StatusDescription;
}
catch (Exception ex)
{
result.Html = ex.Message;
}
if (objhttpitem.IsToLower)
result.Html = result.Html.ToLower(); return result;
}
///
/// 4.0以下.net版本取数据使用
///
///流
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;
}
///
/// 为请求准备参数
///
///参数列表
///读取数据时的编码方式
private void SetRequest(HttpItem objhttpItem)
{
// 验证证书
SetCer(objhttpItem);
//设置Header参数
if (objhttpItem.Header != null && objhttpItem.Header.Count > 0)
{
foreach (string item in objhttpItem.Header.AllKeys)
{
request.Headers.Add(item, objhttpItem.Header[item]);
}
}
// 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
encoding = objhttpItem.Encoding;
//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;
}
///
/// 设置证书
///
///
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(objhttpItem.URL);
//将证书添加到请求里
request.ClientCertificates.Add(new X509Certificate(objhttpItem.CerPath));
}
else
//初始化对像，并设置请求的URL地址
request = (HttpWebRequest)WebRequest.Create(objhttpItem.URL);
}
///
/// 设置Cookie
///
///Http参数
private void SetCookie(HttpItem objhttpItem)
{
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);
}
}
///
/// 设置Post数据
///
///Http参数
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"))
{
byte[] buffer = null;
//写入Byte类型
if (objhttpItem.PostDataType == PostDataType.Byte && objhttpItem.PostdataByte != null && objhttpItem.PostdataByte.Length > 0)
{
//验证在得到结果时是否有传入数据
buffer = objhttpItem.PostdataByte;
}//写入文件
else if (objhttpItem.PostDataType == PostDataType.FilePath && !string.IsNullOrEmpty(objhttpItem.Postdata))
{
StreamReader r = new StreamReader(objhttpItem.Postdata, encoding);
buffer = Encoding.Default.GetBytes(r.ReadToEnd());
r.Close();
} //写入字符串
else if (!string.IsNullOrEmpty(objhttpItem.Postdata))
{
buffer = Encoding.Default.GetBytes(objhttpItem.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 objhttpItem)
{
if (!string.IsNullOrEmpty(objhttpItem.ProxyIp))
{
//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;
}
}
///
/// 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)
{
// 总是接受
return true;
}
#endregion
#region 普通类型
///
///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。
///
///参数列表
///String类型的数据
public HttpResult GetHtml(HttpItem objhttpItem)
{
try
{
//准备参数
SetRequest(objhttpItem);
}
catch (Exception ex)
{
return new HttpResult() { Cookie = "", Header = null, Html = ex.Message, StatusDescription = "配置参考时报错" };
}
//调用专门读取数据的类
return GetHttpRequestData(objhttpItem);
}
#endregion
}
///
/// Http请求参考类
///
public class HttpItem
{
string _URL = string.Empty;
///
/// 请求URL必须填写
///
public string URL
{
get { return _URL; }
set { _URL = value; }
}
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; }
}
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; }
}
Encoding _Encoding = null;
///
/// 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 { return _Encoding; }
set { _Encoding = value; }
}
private PostDataType _PostDataType = PostDataType.String;
///
/// Post的数据类型
///
public PostDataType PostDataType
{
get { return _PostDataType; }
set { _PostDataType = value; }
}
string _Postdata = string.Empty;
///
/// Post请求时要发送的字符串Post数据
///
public string Postdata
{
get { return _Postdata; }
set { _Postdata = value; }
}
private byte[] _PostdataByte = null;
///
/// Post请求时要发送的Byte类型的Post数据
///
public byte[] PostdataByte
{
get { return _PostdataByte; }
set { _PostdataByte = value; }
}
CookieCollection cookiecollection = null;
///
/// Cookie对象集合
///
public CookieCollection CookieCollection
{
get { return cookiecollection; }
set { cookiecollection = value; }
}
string _Cookie = string.Empty;
///
/// 请求时的Cookie
///
public string Cookie
{
get { return _Cookie; }
set { _Cookie = value; }
}
string _Referer = string.Empty;
///
/// 来源地址，上次访问地址
///
public string Referer
{
get { return _Referer; }
set { _Referer = value; }
}
string _CerPath = string.Empty;
///
/// 证书绝对路径
///
public string CerPath
{
get { return _CerPath; }
set { _CerPath = value; }
}
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; }
}
private string proxyusername = string.Empty;
///
/// 代理Proxy 服务器用户名
///
public string ProxyUserName
{
get { return proxyusername; }
set { proxyusername = value; }
}
private string proxypwd = string.Empty;
///
/// 代理 服务器密码
///
public string ProxyPwd
{
get { return proxypwd; }
set { proxypwd = value; }
}
private string proxyip = string.Empty;
///
/// 代理 服务IP
///
public string ProxyIp
{
get { return proxyip; }
set { proxyip = value; }
}
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; }
}
}
///
/// Http返回参数类
///
public class HttpResult
{
string _Cookie = string.Empty;
///
/// Http请求返回的Cookie
///
public string Cookie
{
get { return _Cookie; }
set { _Cookie = value; }
}
CookieCollection cookiecollection = new CookieCollection();
///
/// Cookie对象集合
///
public CookieCollection CookieCollection
{
get { return cookiecollection; }
set { cookiecollection = value; }
}
private string html = string.Empty;
///
/// 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 { return html; }
set { html = value; }
}
private byte[] resultbyte = null;
///
/// 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 { return resultbyte; }
set { resultbyte = value; }
}
private WebHeaderCollection header = new WebHeaderCollection();
//header对象
public WebHeaderCollection Header
{
get { return header; }
set { header = value; }
}
private string statusDescription = "";
///
/// 返回状态说明
///
public string StatusDescription
{
get { return statusDescription; }
set { statusDescription = value; }
}
private HttpStatusCode statusCode = HttpStatusCode.OK;
///
/// 返回状态码,默认为OK
///
public HttpStatusCode StatusCode
{
get { return statusCode; }
set { statusCode = value; }
}
}
///
/// 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
}
}