http://madurangasblogs.blogspot.in/2013/08/avoiding-javaxnetsslsslpeerunverifiedex.html
由马杜兰加（Maduranga）提供
开发使用https的应用程序时，您的测试服务器没有有效的SSL证书。有时网站使用自签名证书，或者网站使用免费的SSL证书。因此，如果您尝试使用Apache连接到服务器HttpClient，则会得到一个异常，告诉您“对等方未通过身份验证”。尽管信任生产软件中的所有证书不是一个好习惯，但是您可能必须根据情况这样做。该解决方案解决了“对等体未认证”引起的异常。
但是在我们寻求解决方案之前，我必须警告您，这对于生产应用程序不是一个好主意。这将违反使用安全证书的目的。因此，除非您有充分的理由或确定不会造成任何问题，否则请勿使用此解决方案。
通常，您会创建一个HttpClient这样的。
HttpClient httpclient = new DefaultHttpClient();
但是您必须更改创建HttpClient的方式。
首先，您必须创建一个扩展类org.apache.http.conn.ssl.SSLSocketFactory。
import org.apache.http.conn.ssl.SSLSocketFactory;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
public class MySSLSocketFactory extends SSLSocketFactory {
SSLContext sslContext = SSLContext.getInstance("TLS");
public MySSLSocketFactory(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {
super(truststore);
TrustManager tm = new X509TrustManager() {
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
};
sslContext.init(null, new TrustManager[] { tm }, null);
}
@Override
public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);
}
@Override
public Socket createSocket() throws IOException {
return sslContext.getSocketFactory().createSocket();
}
}
然后创建这样的方法。
public HttpClient getNewHttpClient() {
try {
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
trustStore.load(null, null);
SSLSocketFactory sf = new MySSLSocketFactory(trustStore);
sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
HttpParams params = new BasicHttpParams();
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);
SchemeRegistry registry = new SchemeRegistry();
registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
registry.register(new Scheme("https", sf, 443));
ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);
return new DefaultHttpClient(ccm, params);
} catch (Exception e) {
return new DefaultHttpClient();
}
}
然后，您可以创建HttpClient。
HttpClient httpclient = getNewHttpClient();
如果您尝试将登录请求发送到登录页面，则其余代码将如下所示。
private URI url = new URI("url of the action of the form");
HttpPost httppost = new HttpPost(url);
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("username", "user"));
nameValuePairs.add(new BasicNameValuePair("password", "password"));
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
InputStream is = entity.getContent();
} catch (UnsupportedEncodingException 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();
}
您将html页面获取到InputStream。然后，您可以对返回的html页面执行任何操作。
但是这里您将面临一个问题。如果要使用Cookie管理会话，则无法使用此方法进行。如果要获取Cookie，则必须通过浏览器进行操作。然后只有您会收到Cookie。