测试类1：



import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.security.KeyStore;

import java.security.KeyStoreException;



import org.apache.commons.httpclient.*;

import org.apache.commons.httpclient.methods.GetMethod;

import org.apache.commons.httpclient.params.HttpMethodParams;

import org.apache.http.conn.ClientConnectionManager;

import org.apache.http.conn.scheme.Scheme;

import org.apache.http.conn.scheme.SocketFactory;

import org.apache.http.conn.ssl.SSLSocketFactory;



public class ZTest2 {

	public static void main(String[] args) {

		// 构造HttpClient的实例

		HttpClient httpClient = new HttpClient();

		

		httpClient.getHostConfiguration().setProxy("10.99.60.201",8080);

		

		KeyStore keyStore = getKeyStore("D:/B/eps.keystore", "111111");

		System.out.println("getSocketFactory****************");

		SocketFactory socketFactory = null;

		try {

			socketFactory = new SSLSocketFactory(keyStore);

		} catch (Exception e) {

			e.printStackTrace();

		}

		

		

		

		

//		System.out.println("registryScheme****************");

//		Scheme scheme = new Scheme("https", socketFactory, 80);

//		((ClientConnectionManager)httpClient.getHttpConnectionManager().).getSchemeRegistry().register(scheme);



		// 创建GET方法的实例

		GetMethod getMethod = new GetMethod("https://eps.dev.surepush.cn:443/epscu/");

		// 使用系统提供的默认的恢复策略

		//getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());

		try {

			// 执行getMethod

			int statusCode = httpClient.executeMethod(getMethod);

			if (statusCode != HttpStatus.SC_OK) {

				System.err.println("Method failed: "

						+ getMethod.getStatusLine());

			}

			// 读取内容

			byte[] responseBody = getMethod.getResponseBody();

			// 处理内容

			System.out.println(new String(responseBody));

		} catch (HttpException e) {

			// 发生致命的异常，可能是协议不对或者返回的内容有问题

			System.out.println("发生致命的异常，可能是协议不对或者返回的内容有问题!");

			e.printStackTrace();

		} catch (IOException e) {

			// 发生网络异常

			e.printStackTrace();

		} finally {

			// 释放连接

			getMethod.releaseConnection();

		}

	}





	public static KeyStore getKeyStore(String uri, String storepass) {

		System.out.println("getKeyStore****************");

		KeyStore keyStore = null;

		try {

			keyStore = KeyStore.getInstance(KeyStore.getDefaultType());

		} catch (KeyStoreException e) {

			e.printStackTrace();

			System.out.println("Failed to create keystore");

		}

		FileInputStream fis = null;

		try {

			fis = new FileInputStream(uri);

		} catch (FileNotFoundException e) {

			e.printStackTrace();

			System.out.println("File read exception");

		}

		try {

			keyStore.load(fis, storepass.toCharArray());

		} catch (Exception e) {

			e.printStackTrace();

		} finally {

			if (fis != null) {

				try {

					fis.close();

				} catch (IOException e) {

					e.printStackTrace();

				}

			}

		}

		return keyStore;

	}

}

以上代码抛如下异常：
log4j:WARN Error initializing output writer.
log4j:WARN Unsupported encoding?
log4j:WARN Error initializing output writer.
log4j:WARN Unsupported encoding?
getKeyStore****************
getSocketFactory****************
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1611)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:187)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:181)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1035)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:124)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:516)
at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:454)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:884)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1112)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:623)
at com.sun.net.ssl.internal.ssl.AppOutputStream.write(AppOutputStream.java:59)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
at org.apache.commons.httpclient.HttpConnection.flushRequestOutputStream(HttpConnection.java:828)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2116)
at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1096)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
at com.client.ctl.ZTest2.main(ZTest2.java:46)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:285)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:191)
at sun.security.validator.Validator.validate(Validator.java:218)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:126)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:209)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:249)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1014)
... 17 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:174)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:238)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:280)
... 23 more


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