Cookie不显示( v4)

Question

  private static CookieStore cookieStore = new BasicCookieStore();
  private HttpClient client = new DefaultHttpClient();
  private static HttpContext httpContext = new BasicHttpContext();

  public static void main(String[] args) throws Exception {

    String url = "http://www.codechef.com";
    String account = "http://www.codechef.com/node?destination=node";
    httpContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);
    List<NameValuePair> postParams = http.getFormParams();
    sendPost(url, postParams);
  }

  private void sendPost(String url, List<NameValuePair> postParams) 
        throws Exception {

    HttpPost post = new HttpPost(url);

    post.setHeader("Accept","text/plain");
    post.setHeader("Accept-Language", "en-US");
    post.setHeader("Connection", "keep-alive");
    post.setEntity(new UrlEncodedFormEntity(postParams));

    HttpResponse response = client.execute(post,httpContext);

    List<Cookie> cook=cookieStore.getCookies();
    if(cook==null)
        System.out.println("Null");
    else{
        System.out.println(cook.size());
        for(Cookie c:cook){
            String cookieReader=c.getName()+" = "+c.getValue()+";domain= "+c.getDomain();
            System.out.println(cookieReader);
        }
    }

  }

  public List<NameValuePair> getFormParams() throws UnsupportedEncodingException {

    List<NameValuePair> paramList = new ArrayList<NameValuePair>();
    paramList.add(new BasicNameValuePair("name","name"));
    paramList.add(new BasicNameValuePair("pass","pass"));

    return paramList;
  }

在post方法之后，cookie的大小是0，但我在浏览器中检查了一下，它显示了sessionID cookie。但我无法使用此代码提取它来验证用户身份。谢谢。

Answer 1

您应该注意HTML表单域。为了正确实现post过程，通常需要隐藏字段。

看看这个网站上的登录表单的html源代码(检查元素...)表单域是："user"，"pass“加上两个隐藏的域"form_build_id”和"form_id“。

尝试在您的'getFormParams‘函数中添加以下内容：

paramList.add(new BasicNameValuePair("form_id","user_login_block"));