用java登录网站

Question

我想用java登录一个网站.我使用的是org.apache.http,我已经写好了

HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("https://accounts.google.com/ServiceLogin?      service=mail&passive=true&rm=false&continue=https%3A%2F%2Fmail.google.com%2Fmail%2F%3Fhl%3Dsl%26tab%3Dwm%26ui%3Dhtml%26zy%3Dl&bsv=llya694le36z&scc=1&ltmpl=default&");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("vb_login_username",
                    "XXX"));
nameValuePairs.add(new BasicNameValuePair("vb_login_password",
                    "XXX"));
post.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = client.execute(post);
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
String line = "";
while ((line = rd.readLine()) != null) {
System.out.println(line);
            }
} catch (IOException e) {
e.printStackTrace();
        }

它正确地发送了我已经测试过的帖子表格,但我仍然无法登录.我想登录的网站是http://www.xtratime.org/forum/ 对此的任何想法还是有不同的方式？

Answer 1

<form action="login.php?do=login" method="post" 
    onsubmit="md5hash(vb_login_password, vb_login_md5password, 
        vb_login_md5password_utf, 0)">

• 在提交页面之前编码密码(onsubmit).你应该在代码中做同样的事情.

• 该action属性的值与您的代码(https://accounts.google.com...)不匹配.您应该将帖子请求发送给login.php?do=login.

并且有很多隐藏的领域:

<input type="hidden" name="s" 
    value="b804473163cb55dce0d43f9f7c41197a" />

<input type="hidden" name="securitytoken" 
    value="0dcd78b4c1a376232b62126e7ad568e0d1213f95" />

<input type="hidden" name="do" value="login" />     

<input type="hidden" name="vb_login_md5password" />

<input type="hidden" name="vb_login_md5password_utf" />

您也应该发送这些参数.

通常,安装HttpFox Firefox Add-on更容易检查post参数的请求,而不是解码javascript.

我的浏览器发送这些帖子参数(用HttpFox捕获,密码是pass1):

vb_login_username: user1
vb_login_password:
s: 5d8bd41a83318e683de9c55a38534407
securitytoken: 0dcd78b4c1a376232b62126e7ad568e0d1213f95
do: login
vb_login_md5password: a722c63db8ec8625af6cf71cb8c2d939
vb_login_md5password_utf: a722c63db8ec8625af6cf71cb8c2d939

编辑:

以下对我有用,我可以在打印的html代码中获得"感谢您登录"消息:

final HttpClient client = new DefaultHttpClient();
final HttpPost post = new HttpPost(
        "http://www.xtratime.org/forum/login.php?do=login");
try {
    final List<NameValuePair> nameValuePairs = 
        new ArrayList<NameValuePair>(1);
    nameValuePairs.add(new BasicNameValuePair("vb_login_username",
            "my user"));
    nameValuePairs.add(new BasicNameValuePair("vb_login_password", ""));
    nameValuePairs.add(new BasicNameValuePair("s", ""));
    nameValuePairs.add(new BasicNameValuePair("securitytoken",
            "inspected with httpfox, like f48d01..."));
    nameValuePairs.add(new BasicNameValuePair("do", "login"));
    nameValuePairs.add(new BasicNameValuePair("vb_login_md5password",
            "inspected with httpfox, like 8e6ae1..."));
    nameValuePairs.add(new BasicNameValuePair(
            "vb_login_md5password_utf",
            "inspected with httpfox, like 8e6ae1..."));

    post.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    final HttpResponse response = client.execute(post);
    final BufferedReader rd = new BufferedReader(new InputStreamReader(
            response.getEntity().getContent()));
    String line = "";
    while ((line = rd.readLine()) != null) {
        System.out.println(line);
    }
} catch (final IOException e) {
    e.printStackTrace();
}