java - Java 中的后续 HTTPS POST 请求并保留 cookie

Question

我需要获取 HTTPS URL 的输入流，例如。 https://baseurl.com/mypdfgenerated.php?param=somevalue 。为了访问此 URL，我需要通过提供 BODY 参数来访问登录页面(例如 https://baseurl.com/login.php ):

user_name, web_pwd and submit_login 

我假设成功访问第一个 URL 的唯一方法是通过 POST 到/login.php，然后存储 cookie，然后在下一个 GET 请求中重用 cookie-session-ID；如果这是正确的方法，那么有人可以与正确/最新的库分享解决方案吗？

Answer 1

不确定哪种是最好的方法，但帮助我实现这一目标的是 CloseableHttpClient 类，它与 BasicCookieStore 一起为登录后的后续请求保留 cookie，实现如下:

BasicCookieStore cookieStore = new BasicCookieStore(); 
CloseableHttpClient httpclient = HttpClients.custom().setDefaultCookieStore(cookieStore).build(); 
HttpUriRequest login = RequestBuilder.post()
                    .setUri(new URI(url_login))
                    .addParameter("login", "loginuname")
                    .addParameter("password", "pwd")
                    .addParameter("submit", "sub_mit");
CloseableHttpResponse response = httpclient.execute(login);
List<Cookie> cookies = cookieStore.getCookies();
response.close();

HttpGet httpget2 = new HttpGet(url_to_get_after_login);
CloseableHttpResponse response2 = httpclient.execute(httpget2);
response2.close();