httpclient中使用HTTPS的方法

      HttpClient请求https的实例：

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();

		}
	}
}

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