用java登录网站

时间:2011-10-01 18:07:12

标签: java http post login

我想使用java登录网站。我使用org.apache.http,我已经写了

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的帖子表格,但我仍然无法登录。我要登录的网站是http://www.xtratime.org/forum/有任何想法或有不同的方式吗?

2 个答案:

答案 0 :(得分:5)

<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,请对密码进行编码(onsubmit)。您应该在代码中执行相同的操作。

  • 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到login.php?do=login

还有很多隐藏的领域:

<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(使用HttpFox捕获,密码为pass1):

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

修改

以下对我有用,我可以在打印的html代码中获取“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();
}

答案 1 :(得分:1)

我建议您使用htmlunit

  

HtmlUnit是“用于Java程序的GUI-Less浏览器”。它模拟HTML   文档并提供一个API,允许您调用页面,填写   表格,点击链接等...就像你在“正常”中做的那样   浏览器。

     

它有相当不错的JavaScript支持(不断改进)   并且能够使用非常复杂的AJAX库进行模拟   Firefox或Internet Explorer,具体取决于您的配置   想用。

     

它通常用于测试目的或检索信息   来自网站。