Java连接超时的几种情况以及读取代码

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class HttpsExample {
    public static void main(String[] args) throws IOException {
        // 设置SSL证书信任和验证
        TrustManager[] trustAllCerts = new TrustManager[] {
            new X509TrustManager() {
                public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {}
                public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {}
                public X509Certificate[] getAcceptedIssuers() { return null; }
            }
        };
        try {
            SSLContext sslContext = SSLContext.getInstance("SSL");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
            HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
        } catch (Exception e) {}

        int timeout = 50000; // 设置连接超时时间为50秒
        int readTimeout = 50000; // 设置读取超时时间5毫秒
        URL url = new URL("https://github.com");
        HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
        connection.setConnectTimeout(timeout);
        connection.setReadTimeout(readTimeout); // 设置读取超时时间
        connection.setRequestMethod("GET");

        BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String inputLine;
        StringBuilder content = new StringBuilder();
        while ((inputLine = in.readLine()) != null) {
            content.append(inputLine);
        }
        in.close();

        System.out.println(content.toString());
        connection.disconnect();
    }
}