在HTTPResponse Android中重定向之后 [英] Following redirects in HTTPResponse Android

问题描述

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？代码：

I need to follow redirects given to me by HTTPost. When I make an HTTPost, and try to read the response, I get the redirect's page html. How can I fix this? Code:

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) {
    }

}

推荐答案

当服务器发送重定向时，它实际上是发送3xx响应代码（通常为301或302）表示重定向，以及一个告诉您新位置的Location标头。

When a server sends a redirect, it is actually sending a 3xx response code (usually 301 or 302) that indicates the redirect, and a Location header that tells you the new location.

因此，在您的情况下，您可以从HttpResponse 对象并使用它发送另一个请求来检索实际登录后的内容。例如：

So, in your case, you can get the Location header from the HttpResponse object and use that to send another request to retrieve the actual content after you've logged in. For example:

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

只要为两个请求重复使用相同的HttpClient对象，它就应该使用由后续请求中的登录请求。

So long as you reuse the same HttpClient object for both requests, it should use any cookies set by the login request in your subsequent request(s).

这篇关于在HTTPResponse Android中重定向之后的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！