使用Java org.apache.http.client获取重定向URL [英] Get hold of redirect url with Java org.apache.http.client

问题描述

在发布到服务器后，我需要帮助弄清楚如何掌握重定向. 首先，我需要从服务器上获取一些cookie.然后，我使用Cookie和其他参数执行发布.然后，服务器将以302重定向进行应答.如何获取该重定向的网址?

I need help with figuring out how to get hold of the redirect after I make a post to the server. First, I need to do a get to obtain some cookies from the server. Then I perform a post with the cookies and additional parameters. The server then answers with a 302 redirect. How do I get the url for that redirect?

代码如下:

HttpGet get = new HttpGet(urlOne);

try {
    //Creating a local instance of cookie store.
    CookieStore cookieJar = new BasicCookieStore();

    // Creating a local HTTP context
    HttpContext localContext = new BasicHttpContext();

    // Bind custom cookie store to the local context
    localContext.setAttribute(ClientContext.COOKIE_STORE, cookieJar);

    HttpResponse response = httpClient.execute(get, localContext);
    HttpEntity entity = response.getEntity();

    System.out.println("------------------GET----------------------");
    System.out.println(response.getStatusLine());
    if (entity != null) {
        System.out.println("Response content length: " + entity.getContentLength());
    }

    // Print out cookies obtained from server
    List<Cookie> cookies = cookieJar.getCookies();
    for (int i = 0; i < cookies.size(); i++) {
        System.out.println("Local cookie: " + cookies.get(i));
    }        

    if (entity != null) {
       entity.consumeContent();
    }
    System.out.println("------------------GET-END---------------------");

    // Create a new post
    HttpPost post = new HttpPost(urlTwo);
    post.setHeader("Content-Type", "application/x-www-form-urlencoded");

    // Add params
    HttpParams params = new BasicHttpParams();
    params.setParameter("action", "search");
    params.setParameter("word", "hello");

    post.setParams(params);

    //Execute
    HttpResponse response2 = httpClient.execute(post, localContext);

推荐答案

请参阅我对这个问题的回答

See my answer to this question,

HttpClient 4-如何捕获上一个重定向URL

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