在HTTPResponse Android中重定向之后

Question

我需要遵循HTTPost给我的重定向.当我创建一个HTTPost,并尝试读取响应时,我得到重定向的页面html.我怎样才能解决这个问题？码:

public void parseDoc() {
    final HttpParams params = new BasicHttpParams();
    HttpClientParams.setRedirecting(params, true);
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(
            "https://secure.groupfusion.net/processlogin.php");
    String HTML = "";
    try {
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
        nameValuePairs.add(new BasicNameValuePair("referral_page",
                "/modules/gradebook/ui/gradebook.phtml?type=student_view"));
        nameValuePairs.add(new BasicNameValuePair("currDomain",
                "beardenhs.knoxschools.org"));
        nameValuePairs.add(new BasicNameValuePair("username", username
                .getText().toString()));
        nameValuePairs.add(new BasicNameValuePair("password", password
                .getText().toString()));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        String g = httppost.getURI().toString();

        HttpResponse response = httpclient.execute(httppost);

        HTML = EntityUtils.toString(response.getEntity());
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        String ResponseBody = httpclient.execute(httppost, responseHandler);
        sting.setText(HTML);

    } catch (ClientProtocolException e) {
    } catch (IOException e) {
    }

}

Answer 1

当服务器发送重定向时,它实际上是发送一个3xx响应代码(通常为301或302),表示重定向,以及一个Location头,告诉您新的位置.

因此,在您的情况下,您可以从HttpResponse对象获取Location标头,并使用它来发送另一个请求以在您登录后检索实际内容.例如:

String newUrl = response.getFirstHeader("Location").getValue();

只要为两个请求重用相同的HttpClient对象,它就应该使用后续请求中登录请求设置的任何cookie.