使用Java 11 HttpClient设置会话cookie

Question

public static void main(String[] args) throws IOException, InterruptedException {
  String year = args[0];
  String day = args[1];
  String session = System.getenv("AOCSESSION");
  System.out.println(session);
  
  HttpRequest req = HttpRequest.newBuilder()
      .uri(URI.create("https://adventofcode.com/"+year+"/day/"+day+"/input")).GET().build();
  CookieManager cookieManager = new CookieManager();
  HttpCookie cookie = new HttpCookie("session", session);
  cookieManager.getCookieStore().add(URI.create("https://adventofcode.com"), cookie);
  HttpClient client = HttpClient.newBuilder().cookieHandler(cookieManager).build();

  String body = client.send(req, BodyHandlers.ofString()).body();
  System.out.println(body);
}

cookie.setDomain(".adventofcode.com");
cookie.setMaxAge(Instant.parse("2031-11-01T18:26:23.293Z").getEpochSecond());
cookie.setPath("/");
cookie.setHttpOnly(true);
cookie.setSecure(true);

但这并不能解决问题。

如何向请求添加会话cookie？

Answer 1

查看JDK文档，有一个CookieHandler。

CookieHandler对象提供回调机制，将HTTP状态管理策略实现连接到HTTP协议处理程序中。HTTP状态管理机制指定了一种使用HTTP请求和响应创建有状态会话的方法。

可以通过执行CookieHandler.setDefault（CookieHandler）注册要由HTTP URL流协议处理程序使用的系统范围的CookieHandler。可以通过调用CookieHandler.getDefault（）来检索当前注册的CookieHandler。有关HTTP状态管理的更多信息，请参见RFC2965:HTTP状态管理机制

HttpClient.newBuilder()
                        .authenticator(Authenticator.getDefault())
                        .connectTimeout(Duration.ofSeconds(30))
                        .cookieHandler(CookieHandler.getDefault())
                        .executor(Executors.newFixedThreadPool(2))
                        .followRedirects(Redirect.NEVER)
                        .priority(1) //HTTP/2 priority
                        .proxy(ProxySelector.getDefault())
                        .sslContext(SSLContext.getDefault())
                        .version(Version.HTTP_2)
                        .sslParameters(new SSLParameters())
                        .build();