HTTPS 사용 예제

/*
 * http://forum.java.sun.com/thread.jspa?threadID=521779&tstart=90
 * File name: TestServlet.java
 * 
 * Created on 2005.01.21.
 */
 
package georgie.test.servlet;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
 
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
/**
 * @author György Novák
 */
 
public class TestServlet extends HttpServlet
{
 
    protected void doGet(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException
    {
        try
        {
 
            trustAllHttpsCertificates();
 
            String urlStr = request.getParameter("url");
 
            HttpsURLConnection.setDefaultHostnameVerifier(hv);
 
            URL url = new URL(urlStr == null ? "https://www.verisign.com/"
                    : urlStr);
 
            debug("URL READY");
 
            BufferedReader in = new BufferedReader(new InputStreamReader(url
                    .openStream()));
 
            debug("INPUT READY");
 
            int buff;
 
            while ((buff = in.read()) != -1)
            {
 
            }
 
            in.close();
 
            debug("EVERYTHING IS DONE!!!");
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
 
    HostnameVerifier hv = new HostnameVerifier()
    {
        public boolean verify(String urlHostName, SSLSession session)
        {
            System.out.println("Warning: URL Host: " + urlHostName + " vs. "
                    + session.getPeerHost());
            return true;
        }
    };
 
    private void debug(String s)
    {
        System.out.println("[DEBUG] -- TestServlet -- \n" + s);
    }
 
    private static void trustAllHttpsCertificates() throws Exception
    {
 
        //  Create a trust manager that does not validate certificate chains:
 
        javax.net.ssl.TrustManager[] trustAllCerts =
 
        new javax.net.ssl.TrustManager[1];
 
        javax.net.ssl.TrustManager tm = new miTM();
 
        trustAllCerts[0] = tm;
 
        javax.net.ssl.SSLContext sc =
 
        javax.net.ssl.SSLContext.getInstance("SSL");
 
        sc.init(null, trustAllCerts, null);
 
        javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(
 
        sc.getSocketFactory());
 
    }
 
    public static class miTM implements javax.net.ssl.TrustManager,
            javax.net.ssl.X509TrustManager
    {
        public java.security.cert.X509Certificate[] getAcceptedIssuers()
        {
            return null;
        }
 
        public boolean isServerTrusted(
                java.security.cert.X509Certificate[] certs)
        {
            return true;
        }
 
        public boolean isClientTrusted(
                java.security.cert.X509Certificate[] certs)
        {
            return true;
        }
 
        public void checkServerTrusted(
                java.security.cert.X509Certificate[] certs, String authType)
                throws java.security.cert.CertificateException
        {
            return;
        }
 
        public void checkClientTrusted(
                java.security.cert.X509Certificate[] certs, String authType)
                throws java.security.cert.CertificateException
        {
            return;
        }
    }
 
}