原文出處：http://ms.mblogger.cn/veaven/posts/18276.aspx
     今天遇到了一個JAVA客戶端連接SSL的問題，查了一下javax.net.ssl.HttpsURLConnection的使用，查到這篇不錯的文章，轉載一下。
    

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
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;
import java.io.DataOutputStream;
import java.net.HttpURLConnection;
import org.apache.xerces.impl.dv.util.Base64;

/**
 * @author lyw
 */

public class ssltest {

    protected String connect(String strUrl) {
       
       

            trustAllHttpsCertificates();
            HttpsURLConnection.setDefaultHostnameVerifier(hv);

          
            URL url = new URL(strUrl);
            HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
 連接到HTTPS服務器
          ......

    }

    HostnameVerifier hv = new HostnameVerifier() {
        public boolean verify(String urlHostName, SSLSession session) {
            System.out.println("Warning: URL Host: " + urlHostName + " vs. "
                               + session.getPeerHost());
            return true;
        }
    };

    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;
        }
    }
   
}