httpclient问题 - ITeye问答

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httpclient问题5

使用httpclient模拟登陆后获取html,代码如下：

    HttpClient client = new HttpClient();
    client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT);
    // 模拟登录
    PostMethod post = new PostMethod(loginurl);
    NameValuePair name = new NameValuePair(loginparematername,username );
    NameValuePair pass = new NameValuePair(loginparematerpass,password );
    post.setRequestBody(new NameValuePair[] { name, pass});
    int status = client.executeMethod(post);
    post.releaseConnection();   
    // 查看cookie信息
    CookieSpec cookiespec = CookiePolicy.getDefaultSpec();
    Cookie[] cookies = cookiespec.match(LOGON_SITE, 80, "/", false,
    client.getState().getCookies());
    String cookie="";
    if (cookies != null)
        if (cookies.length == 0) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.length; i++) {
              	cookie  +=   cookies[i].toString();   
             }
        } 
     //访问所需的页面  
    GetMethod   get   =   new   GetMethod( "/defalut.php");   
    int   st   =   client.executeMethod(get);   
  
       InputStream resStream = get.getResponseBodyAsStream();  
       BufferedReader br = new BufferedReader(new InputStreamReader(resStream, "UTF-8")); 
          StringBuffer resBuffer = new StringBuffer();  
          String resTemp = "";  
          while((resTemp = br.readLine()) != null){  
              resBuffer.append(resTemp + "\n");  
            }  
          String response = resBuffer.toString();  
          System.out.println(response);

第一个页面defalut.php可以取出如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> 
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Welcome</title>
</head>
<frameset rows="*,0" frameborder="no" border="0" framespacing="0">
    <frame src="main.php" name="main" id="main" title="mainFrame" />
    <frame src="about:blank" name="bottom" scrolling="no" noresize="noresize" id="bottomFrame" title="bottom" />
</frameset>
<noframes><body>
</body></noframes>
</html>

修改程序后取main.php, 结果如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Welcome</title>
</head>
<frameset rows="101,*" cols="*" frameborder="no" border="0" framespacing="0">
    <frame src="top.php?category=1" name="topFrame" scrolling="auto" noresize="noresize" id="topFrame" title="topFrame" />
    <frameset cols="240,*" frameborder="no" border="0" framespacing="0">
        <frame src="left.php?category=1&module=1" name="leftFrame" scrolling="auto" noresize="noresize" id="leftFrame" title="leftFrame" />
        <frame src="right.php" name="mainFrame" id="mainFrame" title="mainFrame" />
    </frameset>
</frameset>
<noframes>
    <body>
    </body>
</noframes>

再次改变获取页面为top.php?category=1,或 left.php?category=1&module=1或right.php，全部取到系统踢出用户的一个html，请问这是怎么回事？

问题补充：前面可获取页面的Headers如下：
Date: Fri, 29 Jun 2012 09:07:20 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
X-Powered-By: PHP/5.2.14
Server: Microsoft-IIS/6.0

未能获取html的页面Headers如下：
Date: Fri, 29 Jun 2012 09:08:15 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
X-Powered-By: PHP/5.2.14
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Server: Microsoft-IIS/6.0