httpclient中使用HTTPS的方法

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;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ClientConnectionManager;

import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.scheme.SchemeSocketFactory;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.ClientParamsStack;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.DefaultedHttpParams;
import org.apache.http.params.HttpParams;

public class HttpClientTest {

  public static void main(String args[]) {

    try {

      HttpClient httpclient = new DefaultHttpClient();
                        //Secure Protocol implementation.
      SSLContext ctx = SSLContext.getInstance("SSL");
                        //Implementation of a trust manager for X509 certificates
      X509TrustManager tm = new X509TrustManager() {

        public void checkClientTrusted(X509Certificate[] xcs,
            String string) throws CertificateException {

        }

        public void checkServerTrusted(X509Certificate[] xcs,
            String string) throws CertificateException {
        }

        public X509Certificate[] getAcceptedIssuers() {
          return null;
        }
      };
      ctx.init(null, new TrustManager[] { tm }, null);
      SSLSocketFactory ssf = new SSLSocketFactory(ctx);

      ClientConnectionManager ccm = httpclient.getConnectionManager();
                        //register https protocol in httpclient's scheme registry
      SchemeRegistry sr = ccm.getSchemeRegistry();
      sr.register(new Scheme("https", 443, ssf));

      HttpGet httpget = new HttpGet("");
      HttpParams params = httpclient.getParams();

      params.setParameter("param1", "paramValue1");

      httpget.setParams(params);
      System.out.println("REQUEST:" + httpget.getURI());
      ResponseHandler responseHandler = new BasicResponseHandler();
      String responseBody;

      responseBody = httpclient.execute(httpget, responseHandler);

      System.out.println(responseBody);

      // Create a response handler

    } catch (NoSuchAlgorithmException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (ClientProtocolException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (Exception ex) {
      ex.printStackTrace();

    }
  }
}