Java tutorial
/** * Copyright (c) 2009 Juwi MacMillan Group GmbH * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package de.juwimm.cms.http; import static de.juwimm.cms.common.Constants.rb; import java.awt.Dialog.ModalityType; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.net.ConnectException; import java.net.SocketException; import java.net.URL; import javax.swing.JDialog; import javax.swing.JOptionPane; import org.apache.commons.codec.binary.Base64; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.remoting.httpinvoker.HttpInvokerClientConfiguration; import org.springframework.remoting.support.RemoteInvocationResult; import org.springframework.security.Authentication; import org.springframework.security.context.SecurityContextHolder; import org.tizzit.util.spring.httpinvoker.StreamSupportingHttpInvokerRequestExecutor; import de.juwimm.cms.common.Constants; import de.juwimm.cms.common.http.HttpClientWrapper; import de.juwimm.cms.util.UIConstants; /** * Adds BASIC authentication support to * <code>SimpleHttpInvokerRequestExecutor</code>. * * @author Ben Alex * @version $Id: AuthenticationSimpleHttpInvokerRequestExecutor.java 1784 * 2007-02-24 21:00:24Z luke_t $ */ public class AuthenticationStreamSupportingHttpInvokerRequestExecutor extends StreamSupportingHttpInvokerRequestExecutor { private static final Log log = LogFactory .getLog(AuthenticationStreamSupportingHttpInvokerRequestExecutor.class); private static boolean isErrorMessageShown = false; public AuthenticationStreamSupportingHttpInvokerRequestExecutor() { setReadTimeout(10 * 60 * 60 * 1000); } protected PostMethod createPostMethodForStreaming(final HttpInvokerClientConfiguration config) throws IOException { HttpClientWrapper.getInstance().setHostConfiguration(super.getHttpClient(), new URL(config.getServiceUrl())); final PostMethod postMethod = new PostMethod(config.getServiceUrl()); postMethod.setRequestHeader(HTTP_HEADER_CONTENT_TYPE, CONTENT_TYPE_SERIALIZED_OBJECT_WITH_STREAM); //Solution for TIZZIT-282 //postMethod.setContentChunked(true); Authentication auth = SecurityContextHolder.getContext().getAuthentication(); if ((auth != null) && (auth.getName() != null) && (auth.getCredentials() != null)) { postMethod.setDoAuthentication(true); String base64 = auth.getName() + ":" + auth.getCredentials().toString(); postMethod.addRequestHeader("Authorization", "Basic " + new String(Base64.encodeBase64(base64.getBytes()))); if (log.isDebugEnabled()) { // log.debug("HttpInvocation now presenting via BASIC // authentication SecurityContextHolder-derived: " + // auth.toString()); log.debug( "HttpInvocation now presenting via BASIC authentication SecurityContextHolder-derived. User: " + auth.getName()); } } else { if (log.isDebugEnabled()) { log.debug("Unable to set BASIC authentication header as SecurityContext did not provide " + "valid Authentication: " + auth); } } return postMethod; } protected PostMethod createPostMethod(HttpInvokerClientConfiguration config) throws IOException { HttpClientWrapper.getInstance().setHostConfiguration(super.getHttpClient(), new URL(config.getServiceUrl())); PostMethod postMethod = new PostMethod(config.getServiceUrl()); if (isAcceptGzipEncoding()) { postMethod.addRequestHeader(HTTP_HEADER_ACCEPT_ENCODING, ENCODING_GZIP); } Authentication auth = SecurityContextHolder.getContext().getAuthentication(); if ((auth != null) && (auth.getName() != null) && (auth.getCredentials() != null)) { postMethod.setDoAuthentication(true); String base64 = auth.getName() + ":" + auth.getCredentials().toString(); postMethod.addRequestHeader("Authorization", "Basic " + new String(Base64.encodeBase64(base64.getBytes()))); if (log.isDebugEnabled()) { // log.debug("HttpInvocation now presenting via BASIC // authentication SecurityContextHolder-derived: " + // auth.toString()); log.debug("HttpInvocation now presenting via BASIC authentication SecurityContextHolder-derived: " + auth.getName()); } } else { if (log.isDebugEnabled()) { log.debug("Unable to set BASIC authentication header as SecurityContext did not provide " + "valid Authentication: " + auth); } } return postMethod; } @Override protected void executePostMethod(HttpInvokerClientConfiguration config, HttpClient httpClient, PostMethod postMethod) throws IOException { HttpClientWrapper.getInstance().setHostConfiguration(super.getHttpClient(), new URL(config.getServiceUrl())); try { super.executePostMethod(config, httpClient, postMethod); //if call succeeds isErrorMessageShown = false; } catch (IOException e) { if ((e instanceof SocketException && e.getMessage().equals("Connection reset")) || (e instanceof ConnectException && e.getMessage().equals("Connection refused"))) { if (!isErrorMessageShown) { isErrorMessageShown = true; JOptionPane errorOptionPane = new JOptionPane( Constants.rb.getString("exception.connectionToServerLost"), JOptionPane.INFORMATION_MESSAGE); JDialog errorDialogPane = errorOptionPane.createDialog(UIConstants.getMainFrame(), rb.getString("dialog.title")); errorDialogPane.setModalityType(ModalityType.MODELESS); errorDialogPane.setVisible(true); errorDialogPane.setEnabled(true); errorDialogPane.addWindowListener(new WindowAdapter() { public void windowDeactivated(WindowEvent e) { if (((JDialog) e.getSource()).isVisible() == false) { isErrorMessageShown = false; } } }); } log.error("server is not reachable"); } else { e.printStackTrace(); } } System.out.println(postMethod.getResponseHeaders()); } @Override protected RemoteInvocationResult doExecuteRequest(HttpInvokerClientConfiguration config, ByteArrayOutputStream baos) throws IOException, ClassNotFoundException { HttpClientWrapper.getInstance().setHostConfiguration(super.getHttpClient(), new URL(config.getServiceUrl())); RemoteInvocationResult r = super.doExecuteRequest(config, baos); return r; } }