Question

我在“ 302 Found” HTTP响应中遇到问题。在任何网络浏览器中，它都能正常工作。当我尝试通过HTTP客户端（httpcomponents）以编程方式导航某些URL时，虽然它不起作用。我知道那里有很多类似的讨论。但是到目前为止，他们都没有帮助我。因此，我要在这里提出来。

我正在使用的网页具有两要素认证。它通过了需要登录名/密码的第一个身份验证部分（POST请求）。它还通过了第二步身份验证（POST请求），该身份验证是短信代码。然后，当我按下任何URL时，服务器将返回“ 302 Found” HTTP响应。当我查看HTTP响应标头时，看到“ Location：./？logout”。我知道302表示我需要重定向到“位置”键下HTTP响应标头中显示的URL。但是成功登录后重定向到“注销”是没有意义的。相同的东西在浏览器中也可以正常工作，并且始终返回200 OK。我不明白为什么服务器端使用API时会返回302 Found HTTP，而浏览器返回200 OK。我也完全没有看到浏览器向“？logout” URL发送请求。

这是我的HttpClient（4.4.1版本）的样子：

final Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
    .register("http", new PlainConnectionSocketFactory())
    .build();

final PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
connectionManager.setMaxTotal(30);
connectionManager.setDefaultMaxPerRoute(5);
final HttpHost localhost = new HttpHost("localhost", 80);
connectionManager.setMaxPerRoute(new HttpRoute(localhost), 10);

final int timeout = 20 * 1000;
final RequestConfig requestConfig = RequestConfig.custom()
    .setConnectTimeout(timeout)
    .setConnectionRequestTimeout(timeout)
    .setSocketTimeout(timeout)
    .setCookieSpec(CookieSpecs.STANDARD)
    .setCircularRedirectsAllowed(true)
    .setRedirectsEnabled(true)
    .build();

final CloseableHttpClient httpClient =
    HttpClients.custom()
            .setSSLSocketFactory(sslConnectionSocketFactory)
            .setConnectionManager(connectionManager)
            .setRedirectStrategy(new LaxRedirectStrategy())
            .setDefaultRequestConfig(requestConfig)
            .setDefaultCookieStore(new BasicCookieStore())
            .build();

这是我执行简单的GET请求的方式：

CloseableHttpResponse httpResponse = null;

    try {
        final String url = "web-page-url";

        final HttpGet getRequest = new HttpGet(url);

        httpResponse = httpClient.execute(getRequest, getHttpContext(cookie));

        final StatusLine status = httpResponse.getStatusLine();

        if (status.getStatusCode() >= 200 && status.getStatusCode() < 300) {
            LOGGER.debug("Successfully executed '{}' URL", url);
        } else {
            LOGGER.warn("'{}' response came from '{}' URL", status.getStatusCode(), url);
        }
    } finally {
        if (httpResponse != null) {
            try {
                httpResponse.close();
            } catch (final IOException e) {
                LOGGER.error("Couldn't close HTTP response. Error:", e);
            }
        }
    }

HTTP上下文方法：

private HttpContext getHttpContext(final String cookie) {
    final BasicClientCookie clientCookie = new BasicClientCookie(cookie.split("=")[0], cookie.split("=")[1]);
    clientCookie.setDomain("webpage-domain-name");
    clientCookie.setPath("/");

    final BasicCookieStore cookieStore = new BasicCookieStore();
    cookieStore.addCookie(clientCookie);

    final HttpContext context = new BasicHttpContext();
    context.setAttribute(HttpClientContext.COOKIE_STORE, cookieStore);
    return context;
}

成功登录后，以上GET请求始终返回302响应代码。任何想法/帮助将不胜感激！

“ 302找到” HTTP响应的问题

0 个答案: