在使用httpclient3.1登陆某https网站的时候,遇到如下异常:
Login failure 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:1649) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:241) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:235) at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1206) at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:136) at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:593) at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:529) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:893) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1138) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:632) 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.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:506) at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2114) 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)
以下是网上搜到的解决方案,在初始化httpclient实例前加上两行:
ProtocolSocketFactory fcty = new MySecureProtocolSocketFactory();
Protocol.registerProtocol("https", new Protocol("https", fcty, 443));
httpClient = new HttpClient();
MySecureProtocolSocketFactory类:
package com.jingshou;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import org.apache.commons.httpclient.ConnectTimeoutException;
import org.apache.commons.httpclient.HttpClientError;
import org.apache.commons.httpclient.params.HttpConnectionParams;
import org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory;
import org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory;
public class MySecureProtocolSocketFactory implements
SecureProtocolSocketFactory {
private SSLContext sslContext = null;
/**
* Constructor for MySecureProtocolSocketFactory.
*/
public MySecureProtocolSocketFactory() {
}
/**
*
* @return
*/
private static SSLContext createEasySSLContext() {
try {
SSLContext context = SSLContext.getInstance("SSL");
context.init(null, new TrustManager[] { new MyX509TrustManager() },
null);
return context;
} catch (Exception e) {
throw new HttpClientError(e.toString());
}
}
/**
*
* @return
*/
private SSLContext getSSLContext() {
if (this.sslContext == null) {
this.sslContext = createEasySSLContext();
}
return this.sslContext;
}
/*
* (non-Javadoc)
*
* @see org.apache.commons.httpclient.protocol.ProtocolSocketFactory#createSocket(java.lang.String,
* int, java.net.InetAddress, int)
*/
public Socket createSocket(String host, int port, InetAddress clientHost,
int clientPort) throws IOException, UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(host, port,
clientHost, clientPort);
}
/*
* (non-Javadoc)
*
* @see org.apache.commons.httpclient.protocol.ProtocolSocketFactory#createSocket(java.lang.String,
* int, java.net.InetAddress, int,
* org.apache.commons.httpclient.params.HttpConnectionParams)
*/
public Socket createSocket(final String host, final int port,
final InetAddress localAddress, final int localPort,
final HttpConnectionParams params) throws IOException,
UnknownHostException, ConnectTimeoutException {
if (params == null) {
throw new IllegalArgumentException("Parameters may not be null");
}
int timeout = params.getConnectionTimeout();
if (timeout == 0) {
return createSocket(host, port, localAddress, localPort);
} else {
return ControllerThreadSocketFactory.createSocket(this, host, port,
localAddress, localPort, timeout);
}
}
/*
* (non-Javadoc)
*
* @see SecureProtocolSocketFactory#createSocket(java.lang.String,int)
*/
public Socket createSocket(String host, int port) throws IOException,
UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(host, port);
}
/*
* (non-Javadoc)
*
* @see SecureProtocolSocketFactory#createSocket(java.net.Socket,java.lang.String,int,boolean)
*/
public Socket createSocket(Socket socket, String host, int port,
boolean autoClose) throws IOException, UnknownHostException {
return getSSLContext().getSocketFactory().createSocket(socket, host,
port, autoClose);
}
}
MyX509TrustManager类:
package com.jingshou;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.X509TrustManager;
public class MyX509TrustManager implements X509TrustManager {
/* (non-Javadoc)
* @see javax.net.ssl.X509TrustManager#checkClientTrusted(java.security.cert.X509Certificate[], java.lang.String)
*/
public void checkClientTrusted(X509Certificate[] arg0, String arg1)
throws CertificateException {
}
/* (non-Javadoc)
* @see javax.net.ssl.X509TrustManager#checkServerTrusted(java.security.cert.X509Certificate[], java.lang.String)
*/
public void checkServerTrusted(X509Certificate[] arg0, String arg1)
throws CertificateException {
}
/* (non-Javadoc)
* @see javax.net.ssl.X509TrustManager#getAcceptedIssuers()
*/
public X509Certificate[] getAcceptedIssuers() {
return null;
}
}
经测试最后结果运行良好,具体原理未知......
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