HttpHelpers类普通GET和POST方式，带Cookie和带证书验证模式
/// <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 |
/// 编码日期：2011-09-13 |
/// </summary>using System; |
using System.Collections.Generic; |
using System.Linq; |
using System.Web; |
using System.Text; |
using System.Net; |
using System.IO; |
using System.Security.Cryptography.X509Certificates; |
using System.Net.Security; |
using System; |
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/// <summary> |
///HttpHelpers 主要是实现Http方式的Get和Post方式请求 |
/// </summary> |
public class HttpHelpers |
{ |
/// <summary> |
/// 构造器实现默认属性的赋值 |
/// </summary> |
public HttpHelpers() |
{ |
//设置请求方式为Post |
request.Method = "GET"; |
request.Accept = "text/html, application/xhtml+xml, */*"; |
request.ContentType = "application/x-www-form-urlencoded"; |
} |
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#region 所有的属性 |
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//访问的页面地址 |
private string RequestURl { get; set; } |
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//默认的编码 |
private Encoding encoding { get; set; } |
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//HttpWebRequest对象用来发起请求 |
private HttpWebRequest request { get; set; } |
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//获取影响流的数据对象 |
private HttpWebResponse response { get; set; } |
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//证书文件X509Certificate objx509 = new X509Certificate(Application.StartupPath + "\\123.cer"); |
X509Certificate objx509 { get; set; } |
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//请求方式目前只提供Post和Get方式 |
private string Method { get; set; } |
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//Accept属性 |
private string Accept { get; set; } |
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//ContentType属性 |
private string ContentType { get; set; } |
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//UserAgent属性 |
private string UserAgent { get; set; } |
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//Cookie列表 |
private CookieContainer cookie { get; set; } |
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//需要返回的数据对象 |
private string reutrnDate { get; set; } |
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//Post数据串 |
private string strPostdata { get; set; } |
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#endregion |
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#region 内部方法 |
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//回调验证证书问题 |
private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) |
{ |
// 总是接受 |
return true; |
} |
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/// <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() |
{ |
try |
{ |
//是否要添加证书验证 |
if (objx509 != null) |
{ |
//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); |
} |
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//创建request对象 |
request = (HttpWebRequest)WebRequest.Create(RequestURl); |
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//是否要添加证书验证 |
if (objx509 != null) |
request.ClientCertificates.Add(objx509); |
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//是否带有Cookie值 |
if (cookie != null) |
request.CookieContainer = cookie; |
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//当为post提交是需要填充数据 |
if (Method.Trim().ToLower() == "post") |
{ |
byte[] buffer = encoding.GetBytes(strPostdata); |
request.ContentLength = buffer.Length; |
request.GetRequestStream().Write(buffer, 0, buffer.Length); |
} |
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//得到请求的response |
using (response = (HttpWebResponse)request.GetResponse()) |
{ |
//从这里开始我们要无视编码了 |
if (encoding == null) |
GetEonding(); |
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//开始读取流并设置编码方式 |
using (StreamReader reader = new StreamReader(response.GetResponseStream(), encoding)) |
{ |
//从当前开始读取整个流数据，默认为0所以读取的是全部，并返回数据 |
reutrnDate = reader.ReadToEnd().ToString().Trim(); |
} |
} |
} |
catch (Exception) |
{ |
//这里是在发生异常时返回的错误信息 |
reutrnDate = "String Error"; |
} |
return reutrnDate; |
} |
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/// <summary> |
/// 得到response对象的编码类型 |
/// </summary> |
private void GetEonding() |
{ |
if (response.CharacterSet.Trim() != "") |
encoding = System.Text.Encoding.GetEncoding(response.CharacterSet.Trim()); |
else |
encoding = System.Text.Encoding.UTF8; |
} |
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#endregion |
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#region 公开方法 |
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/// <summary> |
/// 只设置一些简单参数的方式 |
/// </summary> |
/// <param name="_url">URl地址</param> |
/// <param name="_strPostdata">Post请求方式时传入的数据</param> |
/// <param name="_Method">请求方式GET或者POST可以为空默认为GET</param> |
/// <param name="_encoding">编码方式可以为空默认为UTF-8</param> |
/// <param name="_Accept">Accept属性</param> |
/// <param name="_ContentType">ContentType属性</param |
/// <param name="_UserAgent">UserAgent属性</param |
/// <param name="_cookie">CookieContainer列表</param |
/// <param name="_objx509">X509Certificate证书对象</param |
/// <returns>请求所得到的数据</returns> |
public string GetString_null(string _url, string _strPostdata, string _Method, Encoding _encoding, string _Accept, |
string _ContentType, string _UserAgent, CookieContainer _cookie, X509Certificate _objx509) |
{ |
RequestURl = _url; |
Method = _Method; |
encoding = _encoding; |
Accept = _Accept; |
ContentType = _ContentType; |
UserAgent = _UserAgent; |
cookie = _cookie; |
objx509 = _objx509; |
return GetHttpRequestData(); |
} |
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/// <summary> |
/// 只设置一些简单参数的方式 |
/// </summary> |
/// <param name="_url">URl地址</param> |
/// <param name="_strPostdata">Post请求方式时传入的数据</param> |
/// <param name="_Method">请求方式GET或者POST可以为空默认为GET</param> |
/// <param name="_encoding">编码方式可以为空默认为UTF-8</param> |
/// <returns>请求所得到的数据</returns> |
public string GetString_type(string _url, string _Method, Encoding _encoding) |
{ |
RequestURl = _url; |
Method = _Method; |
encoding = _encoding; |
return GetHttpRequestData(); |
} |
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//下面大家自己可以多写几种常用的，呵呵 |
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#endregion |
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} |
