尝试发出简单的Http GET请求时连接超时

Question

https://www.google.com/search?q=stuff

import java.io.IOException;    
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class INRIX {

    private final CloseableHttpClient httpClient = HttpClients.createDefault();

    public static void main(String[] args) {

        INRIX inrix = new INRIX();


        try {
            inrix.peticionGet();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                inrix.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }

    private void close() throws IOException {
        httpClient.close();
    }

    private void peticionGet() throws Exception {

        HttpGet getRequest = new HttpGet("https://www.google.com/search?q=stuff");

        // Request Headers
        getRequest.addHeader("custom-key", "stuff");
        getRequest.addHeader(HttpHeaders.USER_AGENT, "Googlebot");

        try (CloseableHttpResponse response = httpClient.execute(getRequest)) {

            // Get HttpResponse Status
            System.out.println(response.getStatusLine().toString());

            HttpEntity entity = response.getEntity();
            Header headers = entity.getContentType();
            System.out.println(headers);

            if (entity != null) {
                // return it as a String
                String result = EntityUtils.toString(entity);
                System.out.println(result);
            }

        } catch (ClientProtocolException e) {
            System.out.println("ClientProtocolException");
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("IOException");
            e.printStackTrace();
        }

    }
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class INRIXURL {

    public static void main(String[] args) {
        INRIXURL inrix = new INRIXURL();

        inrix.peticionGet();
    }

    public void peticionGet() {

        String url = "https://www.google.com/search?q=stuff";

        HttpURLConnection httpClient;
        try {
            httpClient = (HttpURLConnection) new URL(url).openConnection();

            // optional default is GET
            httpClient.setRequestMethod("GET");

            // add request header
            httpClient.setRequestProperty("User-Agent", "Mozilla/5.0");

            int responseCode = httpClient.getResponseCode();
            System.out.println("\nSending 'GET' request to URL : " + url);
            System.out.println("Response Code : " + responseCode);

            try (BufferedReader in = new BufferedReader(new InputStreamReader(httpClient.getInputStream()))) {

                StringBuilder response = new StringBuilder();
                String line;

                while ((line = in.readLine()) != null) {
                    response.append(line);
                }

                // print result
                System.out.println(response.toString());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

}

第一种情况下的错误：

java.net.ConnectException：连接超时：连接在java.net.DualStackPlainSockeTimpl.Connect0（本机方法）在java.net.DualStackPlainSockeTimpl.SocketConnect（未知源）在java.net.AbstractPlainSockeTimpl.SocketConnect（未知源）在java.net.AbstractPlainSockeTimpl.DoConnect（未知源）在java.net.AbstractPlainSockeTimpl.ConnectToAddress（未知源）在ewHttpClient（未知源）位于Sun.net.www.protocol.http.httpurlconnection.plainConnection.plainConnection（未知源）位于Sun.net.www.protocol.http.https.abstractDelegatehttpsurlconnection.connection（未知源）位于Sun.net.www.protocol.http.httpurlconnection.getInputStream0（未知源）位于Sun.net.www.protocol.http.httpurlconnection.getInputStream0（未知源）位于

我想我可能与工作场所的代理配置有关，但我不知道如何检查或修复它，如果是这种情况，或者如果我只是没有正确地执行请求。我注意到我不能ping公司网络之外的站点或机器，但我不知道这是否相关。

同样，使用https://reqbin.com/，请求工作良好，我可以毫无问题地浏览。

Answer 1

正如你所说：

我想我可能与我工作场所的代理配置有关，[...]

您应该询问您的IT如何使用您的公司代理（或者检查您的网络设置，它可能会显示您的代理设置）