Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 org.apache.cocoon.components.language.markup.xsp; import org.apache.avalon.framework.component.ComponentException; import org.apache.avalon.framework.component.ComponentManager; import org.apache.cocoon.ProcessingException; import org.apache.cocoon.components.xscript.XScriptManager; import org.apache.cocoon.components.xscript.XScriptObject; import org.apache.cocoon.components.xscript.XScriptObjectInlineXML; import org.apache.commons.httpclient.Header; import org.apache.commons.httpclient.HttpConnection; import org.apache.commons.httpclient.HttpState; import org.apache.commons.httpclient.methods.PostMethod; import org.apache.commons.httpclient.protocol.Protocol; import org.apache.excalibur.source.SourceUtil; import org.xml.sax.InputSource; import java.io.InputStreamReader; import java.io.Reader; import java.net.MalformedURLException; import java.net.URL; /** * Helper for the SOAP logicsheet. * * @author <a href="mailto:ovidiu@cup.hp.com">Ovidiu Predescu</a> * @author <a href="mailto:vgritsenko@apache.org">Vadim Gritsenko</a> * @version CVS $Id: SOAPHelper.java 454485 2006-10-09 20:11:47Z joerg $ * @since July 16, 2001 */ public class XSPSOAPHelper { XScriptManager xscriptManager; URL url; String action = ""; XScriptObject xscriptObject; String authorization = ""; int timeoutSeconds; String defaultResponseEncoding = "us-ascii"; public XSPSOAPHelper(ComponentManager manager, String urlContext, String url, String action, String authorization, XScriptObject xscriptObject) throws MalformedURLException, ComponentException { this(manager, urlContext, url, action, authorization, xscriptObject, "us-ascii"); } public XSPSOAPHelper(ComponentManager manager, String urlContext, String url, String action, String authorization, XScriptObject xscriptObject, String defaultResponseEncoding) throws MalformedURLException, ComponentException { this.xscriptManager = (XScriptManager) manager.lookup(XScriptManager.ROLE); URL context = new URL(urlContext); this.url = new URL(context, url); this.action = action; this.authorization = authorization; this.xscriptObject = xscriptObject; this.defaultResponseEncoding = defaultResponseEncoding; this.timeoutSeconds = 60 * 5; // Default timeout is 5 minutes. I don't know how to change this via the soap logicsheet. } public XScriptObject invoke() throws ProcessingException { HttpConnection conn = null; try { if (this.action == null || this.action.length() == 0) { this.action = "\"\""; } String host = this.url.getHost(); int port = this.url.getPort(); Protocol protocol = Protocol.getProtocol(this.url.getProtocol()); if (System.getProperty("http.proxyHost") != null) { String proxyHost = System.getProperty("http.proxyHost"); int proxyPort = Integer.parseInt(System.getProperty("http.proxyPort")); conn = new HttpConnection(proxyHost, proxyPort, host, null, port, protocol); } else { conn = new HttpConnection(host, port, protocol); } conn.setSoTimeout(1000 * timeoutSeconds); PostMethod method = new PostMethod(this.url.getFile()); String request; try { // Write the SOAP request body if (this.xscriptObject instanceof XScriptObjectInlineXML) { // Skip overhead request = ((XScriptObjectInlineXML) this.xscriptObject).getContent(); } else { StringBuffer bodyBuffer = new StringBuffer(); InputSource saxSource = this.xscriptObject.getInputSource(); Reader r = null; // Byte stream or character stream? if (saxSource.getByteStream() != null) { r = new InputStreamReader(saxSource.getByteStream()); } else { r = saxSource.getCharacterStream(); } try { char[] buffer = new char[1024]; int len; while ((len = r.read(buffer)) > 0) { bodyBuffer.append(buffer, 0, len); } } finally { if (r != null) { r.close(); } } request = bodyBuffer.toString(); } } catch (Exception ex) { throw new ProcessingException("Error assembling request", ex); } method.setRequestHeader(new Header("Content-type", "text/xml; charset=utf-8")); method.setRequestHeader(new Header("SOAPAction", this.action)); method.setRequestBody(request); if (this.authorization != null && !this.authorization.equals("")) { method.setRequestHeader( new Header("Authorization", "Basic " + SourceUtil.encodeBASE64(this.authorization))); } method.execute(new HttpState(), conn); String contentType = method.getResponseHeader("Content-type").toString(); // Check if charset given, if not, use defaultResponseEncoding // (cannot just use getResponseCharSet() as it fills in // "ISO-8859-1" if the charset is not specified) String charset = contentType.indexOf("charset=") == -1 ? this.defaultResponseEncoding : method.getResponseCharSet(); String ret = new String(method.getResponseBody(), charset); return new XScriptObjectInlineXML(this.xscriptManager, ret); } catch (ProcessingException ex) { throw ex; } catch (Exception ex) { throw new ProcessingException("Error invoking remote service: " + ex, ex); } finally { try { if (conn != null) { conn.close(); } } catch (Exception ex) { } } } }