[C#HttpHelper]类1.4正式版教程与升级报告
导读
1.升级报告
2.HttpHelper1.4正式版下载
3.HttpHelper类使用方法，
4.最简单的Post与Get的写法
5.HttpHelper设置Header参考的方法
6.HttpHelper获取图片的方式
7.二次或多次使用Cookie的方式
8.使用URL编码的方式
1.升级报告
1.方法 中不要使用类new object(){name=""};这样的方法，因为net2.0不支持
2. if (response.StatusCode != null)无效，一直为True ReEnter反映
if (response.StatusCode != null)无效，一直为True ReEnter反映
{
result.StatusCode = response.StatusCode;
result.StatusDescription = response.StatusDescription;
}
解决办法
if (response != null)无效，一直为True ReEnter反映
{
result.StatusCode = response.StatusCode;
result.StatusDescription = response.StatusDescription;
}无效，一直为True ReEnter反映
3.提出的问题
添加属性ProtocolVersion 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。
4. 解决的问题需要添加属性
添加属性Expect100Continue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。
4.多个证书添加的问题
添加属性ClentCertificates 可以添加多个证书文件
5.ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;设置安全协议的版本。
增加到项目中，可直接设置属性 SecurityProtocolType
6.
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;
应该是meta.Groups.Count > 1
7.post数据添加自由设置编码 只要设置属性HttpItem.PostEncoding就可以了
8.服务器提交了协议冲突. Section=ResponseHeader Detail=标头名称无效
9.增加Url编码与解码方法
/// <summary>
/// 根据指定的编码对RUl进行解码
/// </summary>
/// <param name="text">要解码的字符串</param>
/// <param name="encoding">要进行解码的编码方式</param>
/// <returns></returns>
public static string URLDecode(string text, Encoding encoding)
{
return HttpUtility.UrlDecode(text, encoding);
}
/// <summary>
/// 根据指定的编码对URL进行编码
/// </summary>
/// <param name="text">要编码的URL</param>
/// <param name="encoding">要进行编码的编码方式</param>
/// <returns></returns>
public static string URLEncode(string text, Encoding encoding)
{
return HttpUtility.UrlEncode(text, encoding);
｝
2.HttpHelper1.4正式版下载
下载地址：http://www.sufeinet.com/thread-3-1-1.html
在线测试工具：http://www.sufeinet.com/thread-3690-1-1.html
专用Cookie分析类：http://www.sufeinet.com/thread-2382-1-1.html
要学习更多关于C# Http的请是看我的文章 C# HttpWebRequest 绝技
代码如下所示
/// <summary>
/// 类说明：HttpHelper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：2013-07-02
/// </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;
using System.Web;
namespace DotNet.Utilities
{
/// <summary>
/// Http连接操作帮助类
/// </summary>
public class HttpHelper
{
#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;
/// <summary>
/// 根据相传入的数据，得到相应页面数据
/// </summary>
/// <param name="objhttpitem">参数类对象</param>
/// <returns>返回HttpResult类型</returns>
public HttpResult GetHtml(HttpItem objhttpitem)
{
//返回参数
HttpResult result = new HttpResult();
try
{
//准备参数
SetRequest(objhttpitem);
}
catch (Exception ex)
{
result = new HttpResult()
{
Cookie = "",
Header = null,
Html = ex.Message,
StatusDescription = "配置参数时出错：" + ex.Message
};
return result;
}
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 > 1) ? meta.Groups[2].Value.ToLower() : string.Empty;
if (charter.Length > 2)
encoding = Encoding.GetEncoding(charter.Trim().Replace("\"", "").Replace("‘", "").Replace(";", "").Replace("iso-8859-1", "gbk"));
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;
if (response != null)
{
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;
}
/// <summary>
/// 4.0以下.net版本取数据使用
/// </summary>
/// <param name="streamResponse">流</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);
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>
private void SetRequest(HttpItem objhttpItem)
{
//设置安全协议
ServicePointManager.SecurityProtocol = objhttpItem.SecurityProtocolType;
// 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);
if (objhttpItem.ProtocolVersion != null) request.ProtocolVersion = objhttpItem.ProtocolVersion;
request.ServicePoint.Expect100Continue = objhttpItem.Expect100Continue;
//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;
}
/// <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(objhttpItem.URL);
SetCerList(objhttpItem);
//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);
SetCerList(objhttpItem);
}
}
/// <summary>
/// 设置多个证书
/// </summary>
/// <param name="objhttpItem"></param>
private void SetCerList(HttpItem objhttpItem)
{
if (objhttpItem.ClentCertificates != null && objhttpItem.ClentCertificates.Count > 0)
{
foreach (X509Certificate item in objhttpItem.ClentCertificates)
{
request.ClientCertificates.Add(item);
}
}
}
/// <summary>
/// 设置Cookie
/// </summary>
/// <param name="objhttpItem">Http参数</param>
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);
}
}
/// <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"))
{
if (objhttpItem.PostEncoding != null)
{
postencoding = objhttpItem.PostEncoding;
}
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, postencoding);
buffer = postencoding.GetBytes(r.ReadToEnd());
r.Close();
} //写入字符串
else if (!string.IsNullOrEmpty(objhttpItem.Postdata))
{
buffer = postencoding.GetBytes(objhttpItem.Postdata);
}
if (buffer != null)
{
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);
}
}
}
/// <summary>
/// 设置代理
/// </summary>
/// <param name="objhttpItem">参数对象</param>
private void SetProxy(HttpItem objhttpItem)
{
if (!string.IsNullOrEmpty(objhttpItem.ProxyIp))
{
//设置代理服务器
if (objhttpItem.ProxyIp.Contains(":"))
{
string[] plist = objhttpItem.ProxyIp.Split(‘:‘);
WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim()));
//建议连接
myProxy.Credentials = new NetworkCredential(objhttpItem.ProxyUserName, objhttpItem.ProxyPwd);
//给当前请求对象
request.Proxy = myProxy;
}
else
{
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;
}
}
/// <summary>
/// 回调验证证书问题
/// </summary>
/// <param name="sender">流对象</param>
/// <param name="certificate">证书</param>
/// <param name="chain">X509Chain</param>
/// <param name="errors">SslPolicyErrors</param>
/// <returns>bool</returns>
public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; }
#endregion
#region 公共方法
/// <summary>
/// 根据指定的编码对RUl进行解码
/// </summary>
/// <param name="text">要解码的字符串</param>
/// <param name="encoding">要进行解码的编码方式</param>
/// <returns></returns>
public string URLDecode(string text, Encoding encoding)
{
return HttpUtility.UrlDecode(text, encoding);
}
/// <summary>
/// 根据指定的编码对URL进行编码
/// </summary>
/// <param name="text">要编码的URL</param>
/// <param name="encoding">要进行编码的编码方式</param>
/// <returns></returns>
public string URLEncode(string text, Encoding encoding)
{
return HttpUtility.UrlEncode(text, encoding);
}
#endregion
}
/// <summary>
/// Http请求参考类
/// </summary>
public class HttpItem
{
string _URL = string.Empty;
/// <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,当为POST方式时必须设置Postdata的值
/// </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; }
}
Encoding _Encoding = null;
/// <summary>
/// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312
/// </summary>
public Encoding Encoding
{
get { return _Encoding; }
set { _Encoding = value; }
}
private PostDataType _PostDataType = PostDataType.String;
/// <summary>
/// Post的数据类型
/// </summary>
public PostDataType PostDataType
{
get { return _PostDataType; }
set { _PostDataType = value; }
}
string _Postdata = string.Empty;
/// <summary>
/// Post请求时要发送的字符串Post数据
/// </summary>
public string Postdata
{
get { return _Postdata; }
set { _Postdata = value; }
}
private byte[] _PostdataByte = null;
/// <summary>
/// Post请求时要发送的Byte类型的Post数据
/// </summary>
public byte[] PostdataByte
{
get { return _PostdataByte; }
set { _PostdataByte = value; }
}
CookieCollection cookiecollection = null;
/// <summary>
/// Cookie对象集合
/// </summary>
public CookieCollection CookieCollection
{
get { return cookiecollection; }
set { cookiecollection = 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; }
}
private Boolean isToLower = false;
/// <summary>
/// 是否设置为全文小写，默认为不转化
/// </summary>
public Boolean IsToLower
{
get { return isToLower; }
set { isToLower = value; }
}
private Boolean allowautoredirect = false;
/// <summary>
/// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转
/// </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; }
}
private ResultType resulttype = ResultType.String;
/// <summary>
/// 设置返回类型String和Byte
/// </summary>
public ResultType ResultType
{
get { return resulttype; }
set { resulttype = value; }
}
private WebHeaderCollection header = new WebHeaderCollection();
/// <summary>
/// header对象
/// </summary>
public WebHeaderCollection Header
{
get { return header; }
set { header = value; }
}
/// <summary>
// 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。
/// </summary>
public Version ProtocolVersion { get; set; }
private Boolean _expect100continue = true;
/// <summary>
/// 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。
/// </summary>
public Boolean Expect100Continue
{
get { return _expect100continue; }
set { _expect100continue = value; }
}
/// <summary>
/// 设置509证书集合
/// </summary>
public X509CertificateCollection ClentCertificates { get; set; }
/// <summary>
/// 指定Schannel安全包支持的安全协议
/// </summary>
public SecurityProtocolType SecurityProtocolType { get; set; }
/// <summary>
/// 设置或获取Post参数编码,默认的为Default编码
/// </summary>
public Encoding PostEncoding { get; set; }
}
/// <summary>
/// Http返回参数类
/// </summary>
public class HttpResult
{
/// <summary>
/// Http请求返回的Cookie
/// </summary>
public string Cookie { get; set; }
/// <summary>
/// Cookie对象集合
/// </summary>
public CookieCollection CookieCollection { get; set; }
/// <summary>
/// 返回的String类型数据 只有ResultType.String时才返回数据，其它情况为空
/// </summary>
public string Html { get; set; }
/// <summary>
/// 返回的Byte数组 只有ResultType.Byte时才返回数据，其它情况为空
/// </summary>
public byte[] ResultByte { get; set; }
/// <summary>
/// header对象
/// </summary>
public WebHeaderCollection Header { get; set; }
/// <summary>
/// 返回状态说明
/// </summary>
public string StatusDescription { get; set; }
/// <summary>
/// 返回状态码,默认为OK
/// </summary>
public HttpStatusCode StatusCode { get; set; }
}
/// <summary>
/// 返回类型
/// </summary>
public enum ResultType
{
/// <summary>
/// 表示只返回字符串 只有Html有数据
/// </summary>
String,
/// <summary>
/// 表示返回字符串和字节流 ResultByte和Html都有数据返回
/// </summary>
Byte
}
/// <summary>
/// Post的数据格式默认为string
/// </summary>
public enum PostDataType
{
/// <summary>
/// 字符串类型，这时编码Encoding可不设置
/// </summary>
String,
/// <summary>
/// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空
/// </summary>
Byte,
/// <summary>
/// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值
/// </summary>
FilePath
}
}
HttpHelper源码
3.HttpHelper类使用方法，
HttpHelper http = new HttpHelper();
HttpItem item = new HttpItem()
{
URL = "http://www.sufeinet.com",//URL 必需项
Encoding = null,//编码格式（utf-8,gb2312,gbk） 可选项 默认类会自动识别
//Encoding = Encoding.Default,
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.sufeinet.com",//来源URL 可选项
};
item.Header.Add("测试Key1", "测试Value1");
item.Header.Add("测试Key2", "测试Value2");
//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)
{
//表示访问成功，具体的大家就参考HttpStatusCode类
}
//表示StatusCode的文字说明与描述
string statusCodeDescription = result.StatusDescription;
本例子是一个统一的标准写法，大家可以根据需要自行修改，在下面还会有对特定功能的说明请大家继续看
4.最简单的Post与Get的写法
HttpHelper http = new HttpHelper();
HttpItem item = new HttpItem()
{
URL = "http://www.sufeinet.com",//URL这里都是测试 必需项
Method = "get",//URL 可选项 默认为Get
};
//得到HTML代码
HttpResult result = http.GetHtml(item);
item = new HttpItem()
{
URL = "http://tool.sufeinet.com",//URL这里都是测试URl 必需项
Encoding = null,//编码格式（utf-8,gb2312,gbk） 可选项 默认类会自动识别
//Encoding = Encoding.Default,
Method = "post",//URL 可选项 默认为Get
Postdata = "user=123123&pwd=1231313"
};
//得到新的HTML代码
result = http.GetHtml(item);
5.HttpHelper设置Header参考的方法
HttpHelper http = new HttpHelper();
HttpItem item = new HttpItem()
{
URL = "http://www.sufeinet.com",//URL 必需项
Encoding = null,//编码格式（utf-8,gb2312,gbk） 可选项 默认类会自动识别
//Encoding = Encoding.Default,
Method = "get",//URL 可选项 默认为Get
};
item.Header.Add("测试Key1", "测试Value1");
item.Header.Add("测试Key2", "测试Value2");
//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)
{
//表示访问成功，具体的大家就参考HttpStatusCode类
}
//表示StatusCode的文字说明与描述
string statusCodeDescription = result.StatusDescription;
下面我列出一些不能直接Add的参数
6.HttpHelper获取图片的方式
HttpHelper http = new HttpHelper();
HttpItem item = new HttpItem()
{
URL = "http://www.sufeinet.com",//URL 必需项
Encoding = null,//编码格式（utf-8,gb2312,gbk） 可选项 默认类会自动识别
//Encoding = Encoding.Default,
ResultType = ResultType.Byte
};
//得到HTML代码
HttpResult result = http.GetHtml(item);
if (result.StatusCode == System.Net.HttpStatusCode.OK)
{
//表示访问成功，具体的大家就参考HttpStatusCode类
}
//表示StatusCode的文字说明与描述
string statusCodeDescription = result.StatusDescription;
//把得到的Byte转成图片
Image img = byteArrayToImage(result.ResultByte);
}
/// <summary>
/// 字节数组生成图片
/// </summary>
/// <param name="Bytes">字节数组</param>
/// <returns>图片</returns>
private Image byteArrayToImage(byte[] Bytes)
{
using (MemoryStream ms = new MemoryStream(Bytes))
{
Image outputImg = Image.FromStream(ms);
return outputImg;
}
}
7.二次或多次使用Cookie的方式
HttpHelper http = new HttpHelper();
HttpItem item = new HttpItem()
{
URL = "http://www.sufeinet.com",//URL这里都是测试 必需项
Encoding = null,//编码格式（utf-8,gb2312,gbk） 可选项 默认类会自动识别
//Encoding = Encoding.Default,
Method = "get",//URL 可选项 默认为Get
};
//得到HTML代码
HttpResult result = http.GetHtml(item);
item = new HttpItem()
{
URL = "http://tool.sufeinet.com",//URL这里都是测试URl 必需项
Encoding = null,//编码格式（utf-8,gb2312,gbk） 可选项 默认类会自动识别
//Encoding = Encoding.Default,
Method = "get",//URL 可选项 默认为Get
Cookie = result.Cookie,
};
//得到新的HTML代码
result = http.GetHtml(item);
8.使用URL编码的方式
HttpHelper http = new HttpHelper();
HttpItem item = new HttpItem()
{
URL = http.URLEncode("http://www.sufeinet.com", Encoding.UTF8),//URL编码
};
HttpResult result = http.GetHtml(item);
string html = result.Html;
string url = http.URLDecode(html, Encoding.UTF8);//URL解码
string cookie = result.Cookie;
好了就这些，具体的大家可以在使用中提出来，我尽力为大家解决
如果您感觉还可以的话就给个评论或者是推荐吧。
时间： 2024-10-13 13:08:45