java 访问https忽略证书

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.HttpsURLConnection;
import java.security.SecureRandom;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLSession;
import javax.security.cert.CertificateException;
public class HttpDemo {	
    /**
 * Trust every server - dont check for any certificate
 */
private static void trustAllHosts() {

	// Create a trust manager that does not validate certificate chains
	TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {

		public java.security.cert.X509Certificate[] getAcceptedIssuers() {
			return new java.security.cert.X509Certificate[] {};
		}

		public void checkClientTrusted(X509Certificate[] chain, String authType)  {
			
		}

		public void checkServerTrusted(X509Certificate[] chain, String authType) {
			
		}
	} };

	// Install the all-trusting trust manager
	try {
		SSLContext sc = SSLContext.getInstance("TLS");
		sc.init(null, trustAllCerts, new java.security.SecureRandom());
		HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
	} catch (Exception e) {
		e.printStackTrace();
	}
}
	public static void main(String[] args) {
		httpGet();
	}

}