java - 使用 jetty Http 客户端发送 Https 请求中的 NullPointerException

Question

我正在使用 Jetty HTTP 客户端 (v9.2.5) 发送 HTTP 请求它适用于 HTTP 请求 {Post,Get,...}但是当我发送 HTTPS 请求后我看到了这个

java.util.concurrent.ExecutionException: java.lang.NullPointerException
at org.eclipse.jetty.client.util.FutureResponseListener.getResult(FutureResponseListener.java:118)
at org.eclipse.jetty.client.util.FutureResponseListener.get(FutureResponseListener.java:101)
at org.eclipse.jetty.client.HttpRequest.send(HttpRequest.java:642)

我的职能是

private Object sendHttpPOSTRequest(String url, List<Header> headers,
        String content, HttpMethod method) {
    try {
        HttpClient client = new HttpClient();
        client.setMaxConnectionsPerDestination(16);
        client.setAddressResolutionTimeout(5000);
        client.setConnectTimeout(5000);
        client.setMaxRedirects(3);
        client.setFollowRedirects(true);
        client.setExecutor(_executor);
        client.start();
        Request req = client.POST(url).content(
                new StringContentProvider(content));
        if (headers != null)
            req = setHeaders(req, headers);
        req.header(HttpHeader.CONTENT_TYPE, "application/json");

        return req.send();

    } catch (Exception e) {
        e.printStackTrace();
        return "Failed";
    }

}

怎么了？

Answer 1

对于 HTTPS，您必须像下面这样使用 httpclient 初始化:

// Instantiate and configure the SslContextFactory
SslContextFactory.Client sslContextFactory = new SslContextFactory.Client();

// Instantiate HttpClient with the SslContextFactory
HttpClient httpClient = new HttpClient(sslContextFactory);

// Configure HttpClient, for example:
httpClient.setFollowRedirects(false);

// Start HttpClient
httpClient.start();