java 利用 httpClient 模拟登陆网站时，网站重定向，我该怎么进入后继的网页啊！

Question

我用的是httpclient4.3.6 。我模拟登陆我们学校的网站，获取了cookies，但是我用httpwatch看 有重定向的问题，我不知道怎么进入后面的网页！求解！我贴上代码，求代码详解，谢谢！！！小弟初学java 现需要做这个操作，很是艰难呀！感激不尽！

Answer 1

public class Test {

public static void main(String[] args) throws Exception {
    BasicCookieStore cookieStore = new BasicCookieStore();
    CloseableHttpClient httpclient = HttpClients.custom()
            .setDefaultCookieStore(cookieStore)
            .build();
    try {
        HttpUriRequest login = RequestBuilder.post()
                .setUri(new URI("http://portal.sicnu.edu.cn:82/cas/login"))
                .addParameter("action","DCPLogin")
                .addParameter("encodedService","http%3a%2f%2fportal.sicnu.edu.cn%2fcas.jsp")
                .addParameter("lt","LT_M5000-R_-592543-IhH4ao22pYE5PM83cHXa")
                .addParameter("password", "123456")
                .addParameter("service","http://portal.sicnu.edu.cn/cas.jsp")
                .addParameter("serviceName","null")
                .addParameter("username", "2013110401")
                .build();
        String MainURL = "http://portal.sicnu.edu.cn/portal/media-type/html/role/school/page/default.psml/js_pane/P-132fb077a30-1000d";

        CloseableHttpResponse response2 = httpclient.execute(login);
        try {
            HttpEntity entity = response2.getEntity();
            System.out.println("Login form get: " + response2.getStatusLine());
            EntityUtils.consume(entity);
            System.out.println("Post logon cookies:");
            List<Cookie> cookies = cookieStore.getCookies();

            if (cookies.isEmpty()) {
              System.out.println("None");
            } else {
                for (int i = 0; i < cookies.size(); i++) {
                    System.out.println("- " + cookies.get(i).toString());
               }
            }finally{
                                   response2.close();
                            }
                            }finally{
                                  httpclient.close();
                            }