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.camel.component.cxf; import java.util.ArrayList; import java.util.List; import javax.xml.transform.Source; import javax.xml.transform.dom.DOMSource; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Text; import org.apache.camel.Exchange; import org.apache.camel.Processor; import org.apache.camel.builder.RouteBuilder; import org.apache.camel.builder.xml.XPathBuilder; import org.apache.camel.converter.jaxp.XmlConverter; import org.apache.camel.test.junit4.CamelTestSupport; import org.apache.commons.lang.StringUtils; import org.apache.cxf.BusFactory; import org.apache.cxf.binding.soap.SoapHeader; import org.apache.cxf.frontend.ClientFactoryBean; import org.apache.cxf.frontend.ClientProxyFactoryBean; import org.junit.Test; public class CxfConsumerPayloadXPathClientServerTest extends CamelTestSupport { private static final String ECHO_RESPONSE = "<ns1:echoResponse xmlns:ns1=\"http://cxf.component.camel.apache.org/\">" + "<return xmlns=\"http://cxf.component.camel.apache.org/\">echo Hello World!</return>" + "</ns1:echoResponse>"; protected final String simpleEndpointAddress = "http://localhost:" + CXFTestSupport.getPort1() + "/" + getClass().getSimpleName() + "/test"; protected final String simpleEndpointURI = "cxf://" + simpleEndpointAddress + "?serviceClass=org.apache.camel.component.cxf.HelloService"; private String testMessage; private String receivedMessageCxfPayloadApplyingXPath; private String receivedMessageByDom; private String receivedMessageStringApplyingXPath; @Override protected RouteBuilder createRouteBuilder() { return new RouteBuilder() { @Override public void configure() { from(simpleEndpointURI + "&dataFormat=PAYLOAD").to("log:info").process(new Processor() { @SuppressWarnings("unchecked") @Override public void process(final Exchange exchange) throws Exception { Object request = exchange.getIn().getBody(); assertIsInstanceOf(CxfPayload.class, request); //attempt 1) applying XPath to exchange.getIn().getBody() receivedMessageCxfPayloadApplyingXPath = XPathBuilder.xpath("//*[name()='arg0']/text()") .evaluate(context, request, String.class); //attempt 2) in stead of XPATH, browse the DOM-tree CxfPayload<SoapHeader> payload = (CxfPayload<SoapHeader>) request; Element el = payload.getBody().get(0); Element el2 = (Element) el.getFirstChild(); Text textnode = (Text) el2.getFirstChild(); receivedMessageByDom = textnode.getNodeValue(); textnode = (Text) textnode.getNextSibling(); while (textnode != null) { //the textnode appears to have siblings! receivedMessageByDom = receivedMessageByDom + textnode.getNodeValue(); textnode = (Text) textnode.getNextSibling(); } //attempt 3) apply XPATH after converting CxfPayload to String request = exchange.getIn().getBody(String.class); assertIsInstanceOf(String.class, request); receivedMessageStringApplyingXPath = XPathBuilder.xpath("//*[name()='arg0']/text()") .evaluate(context, request, String.class); //build some dummy response XmlConverter converter = new XmlConverter(); Document outDocument = converter.toDOMDocument(ECHO_RESPONSE); List<Source> outElements = new ArrayList<Source>(); outElements.add(new DOMSource(outDocument.getDocumentElement())); // set the payload header with null CxfPayload<SoapHeader> responsePayload = new CxfPayload<SoapHeader>(null, outElements, null); exchange.getOut().setBody(responsePayload); } }); } }; } private void buildTestMessage(int size) { testMessage = StringUtils.repeat("x", size); } @Test public void testMessageWithIncreasingSize() throws Exception { execTest(1); execTest(10); execTest(100); execTest(1000); execTest(10000); execTest(100000); } private void execTest(int size) throws Exception { buildTestMessage(size); ClientProxyFactoryBean proxyFactory = new ClientProxyFactoryBean(); ClientFactoryBean clientBean = proxyFactory.getClientFactoryBean(); clientBean.setAddress(simpleEndpointAddress); clientBean.setServiceClass(HelloService.class); clientBean.setBus(BusFactory.getDefaultBus()); HelloService client = (HelloService) proxyFactory.create(); String result = client.echo(testMessage); assertEquals("We should get the echo string result from router", "echo Hello World!", result); //check received requests assertEquals("Lengths of testMessage and receiveMessage should be equal (conversion body to String),", testMessage.length(), receivedMessageStringApplyingXPath.length()); assertEquals("Lengths of receivedMessageByDom and receivedMessageCxfPayloadApplyingXPath should be equal", receivedMessageCxfPayloadApplyingXPath.length(), receivedMessageByDom.length()); assertEquals("Lengths of testMessage and receiveMessage should be equal (body is CxfPayload),", testMessage.length(), receivedMessageCxfPayloadApplyingXPath.length()); } }