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楼主 |
发表于 2008-11-3 21:38:42
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获取CookieContainer
通过COM的方法来实现的
1 using System;
2using System.Runtime.InteropServices;
3using System.Text;
4using System.Net;
5
6namespace NExplus.NSiter
7   {
8  /**////
<summary>
9 /// 获取Cookie的方法类。
10 ///
</summary>
11
public
class CookieManger
12 {
13 /**////
<summary>
14 /// 通过COM来获取Cookie数据。
15 ///
</summary>
16 ///
<param name="url">当前网址。</param>
17 ///
<param name="cookieName">CookieName.</param>
18 ///
<param name="cookieData">用于保存Cookie Data的<see cref="StringBuilder"/>实例。</param>
19 ///
<param name="size">Cookie大小。</param>
20 ///
<returns>如果成功则返回<c>true</c>,否则返回<c>false</c>。</returns>
21 [DllImport("wininet.dll", SetLastError =
true)]
22 public
static
extern
bool InternetGetCookie(
23 string url, string cookieName,
24 StringBuilder cookieData, ref
int size);
25 /**////
<summary>
26 /// 获取当前<see cref="Uri"/>的<see cref="CookieContainer"/>实例。
27 ///
</summary>
28 ///
<param name="uri">当前<see cref="Uri"/>地址。</param>
29 ///
<returns>当前<see cref="Uri"/>的<see cref="CookieContainer"/>实例。</returns>
30
public
static CookieContainer GetUriCookieContainer(Uri uri) {
31 CookieContainer cookies =
null;
32
33 // 定义Cookie数据的大小。
34
int datasize =
256;
35 StringBuilder cookieData =
new StringBuilder(datasize);
36
37 if (!InternetGetCookie(uri.ToString(), null, cookieData,
38 ref datasize)) {
39 if (datasize <
0)
40 return
null;
41
42 // 确信有足够大的空间来容纳Cookie数据。
43 cookieData =
new StringBuilder(datasize);
44 if (!InternetGetCookie(uri.ToString(), null, cookieData,
45 ref datasize))
46 return
null;
47 }
48
49
50 if (cookieData.Length >
0) {
51 cookies =
new CookieContainer();
52 cookies.SetCookies(uri, cookieData.ToString().Replace(';', ','));
53 }
54 return cookies;
55 }
56
57 }
58 } |
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