.net 获取浏览器Cookie(包括HttpOnly)实例分享

一、接口文件

using System; 
using System.ComponentModel; 
using System.Net; 
using System.Runtime.InteropServices; 
using System.Security; 
using System.Security.Permissions; 
using System.Text; namespace CookieHandler 
{ 
 internal sealed class INativeMethods 
 { 
 #region enums  public enum ErrorFlags 
 { 
 ERROR_INSUFFICIENT_BUFFER = 122, 
 ERROR_INVALID_PARAMETER = 87, 
 ERROR_NO_MORE_ITEMS = 259 
 }  public enum InternetFlags 
 { 
 INTERNET_COOKIE_HTTPONLY = 8192, //Requires IE 8 or higher 
 INTERNET_COOKIE_THIRD_PARTY = 131072, 
 INTERNET_FLAG_RESTRICTED_ZONE = 16 
 }  #endregion  #region DLL Imports  [SuppressUnmanagedCodeSecurity, SecurityCritical, DllImport("wininet.dll", EntryPoint = "InternetGetCookieExW", CharSet = CharSet.Unicode, SetLastError = true, ExactSpelling = true)] 
 internal static extern bool InternetGetCookieEx([In] string Url, [In] string cookieName, [Out] StringBuilder cookieData, [In, Out] ref uint pchCookieData, uint flags, IntPtr reserved);  #endregion 
 } 
} 

二、获取cookie类

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Net; 
using System.Runtime.InteropServices; 
using System.Security; 
using System.Security.Permissions; 
using System.Text; namespace CookieHandler 
{ 
 /// <SUMMARY></SUMMARY> 
 /// 取得WebBrowser的完整Cookie。 
 /// 因为默认的webBrowser1.Document.Cookie取不到HttpOnly的Cookie 
 /// IE7不兼容，IE8可以，其它未知 
 /// 
 public class FullWebBrowserCookie 
 { 
 public static Dictionary<string, string> GetCookieList(Uri uri, bool throwIfNoCookie) 
 { 
 Dictionary<string, string> dict = new Dictionary<string, string>(); 
 string cookie = GetCookieInternal(uri, throwIfNoCookie); 
 Console.WriteLine("FullWebBrowserCookie - 所有cookie:" + cookie); 
 string[] arrCookie = cookie.Split(';'); 
 foreach (var item in arrCookie) 
 { 
 string[] arr = item.Split('='); 
 string key = arr[0].Trim(); 
 string val = ""; 
 if (arr.Length >= 2) 
 { 
 val = arr[1].Trim(); 
 }  if (!dict.ContainsKey(key)) 
 { 
 dict.Add(key, val); 
 } 
 } 
 Console.WriteLine("FullWebBrowserCookie - cookie已载入dict，共" + dict.Count.ToString() + "项");  return dict; 
 }  public static string GetCookieValue(string key, Uri uri, bool throwIfNoCookie) 
 { 
 Console.WriteLine("GetCookieValue"); 
 Dictionary<string, string> dict = GetCookieList(uri, throwIfNoCookie);  if (dict.ContainsKey(key)) 
 { 
 return dict[key]; 
 } 
 return ""; 
 }  [SecurityCritical] 
 public static string GetCookieInternal(Uri uri, bool throwIfNoCookie) 
 { 
 Console.WriteLine("GetCookieInternal");  uint pchCookieData = 0; 
 string url = UriToString(uri); 
 uint flag = (uint)INativeMethods.InternetFlags.INTERNET_COOKIE_HTTPONLY;  //Gets the size of the string builder 
 if (INativeMethods.InternetGetCookieEx(url, null, null, ref pchCookieData, flag, IntPtr.Zero)) 
 { 
 pchCookieData++; 
 StringBuilder cookieData = new StringBuilder((int)pchCookieData);  //Read the cookie 
 if (INativeMethods.InternetGetCookieEx(url, null, cookieData, ref pchCookieData, flag, IntPtr.Zero)) 
 { 
 DemandWebPermission(uri); 
 return cookieData.ToString(); 
 } 
 }  int lastErrorCode = Marshal.GetLastWin32Error();  if (throwIfNoCookie || (lastErrorCode != (int)INativeMethods.ErrorFlags.ERROR_NO_MORE_ITEMS)) 
 { 
 throw new Win32Exception(lastErrorCode); 
 }  return null; 
 }  private static void DemandWebPermission(Uri uri) 
 { 
 string uriString = UriToString(uri);  if (uri.IsFile) 
 { 
 string localPath = uri.LocalPath; 
 new FileIOPermission(FileIOPermissionAccess.Read, localPath).Demand(); 
 } 
 else
 { 
 new WebPermission(NetworkAccess.Connect, uriString).Demand(); 
 } 
 }  private static string UriToString(Uri uri) 
 { 
 if (uri == null) 
 { 
 throw new ArgumentNullException("uri"); 
 }  UriComponents components = (uri.IsAbsoluteUri ? UriComponents.AbsoluteUri : UriComponents.SerializationInfoString); 
 return new StringBuilder(uri.GetComponents(components, UriFormat.SafeUnescaped), 2083).ToString(); 
 } 
 } 
} 

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