[CONF] Apache Camel: CXF (page edited)

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Page Edited : CAMEL : CXF CXF has been edited by willem jiang (May 23, 2008). Change summary: Added the discription of how to propagate camel-cxf endpoint's request and response context (View changes) Content: CXF Component The cxf: component provides integration with Apache CXF for connecting to JAX-WS services hosted in CXF. Maven users will need to add the following dependency to their pom.xml for this component: <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-cxf</artifactId> <version>x.x.x</version> <!-- use the same version as your Camel core version --> </dependency> URI format cxf://address?options Where address represents the CXF endpoint's address cxf:bean:cxfEndpoint Where cxfEndpoint represents the spring bean's name which presents the CXF endpoint For either style above, you can append options to the URI as follows: cxf:bean:cxfEndpoint?wsdlURL=wsdl/hello_world.wsdl&dataFormat=PAYLOAD Options Name Description Example Required? default value wsdlURL The location of the WSDL. file://local/wsdl/hello.wsdl or wsdl/hello.wsdl No WSDL is obtained from endpoint address by default serviceClass The name of the SEI(Service Endpoint Interface) implementation class. This class can have but does not require JSR181 annotations. org.apache.camel.Hello Yes for CXF provider, for CXF Consumer only if POJO dataFormat option is used   serviceName The service name this service is implementing, it maps to the wsdl:[EMAIL PROTECTED] {http://org.apache.camel} ServiceName Only if more than one serviceName in WSDL present   portName The port name this service is implementing, it maps to the wsdl:[EMAIL PROTECTED] {http://org.apache.camel} PortName Only if more than one portName under the serviceName is present   dataFormat Which data type messages the CXF endpoint supports POJO, PAYLOAD, MESSAGE No POJO wrapped Which kind of operation that CXF endpoint producer will invoke true, false No false The serviceName and portName are QNames, so if you provide them be sure to prefix them with their {namespace} as shown in the examples above. The descriptions of the dataformats DataFormat Description POJO POJOs (Plain old Java objects) are the Java parameters to the method being invoked on the target server. PAYLOAD PAYLOAD is the message payload (the contents of the soap:body) after message configuration in the CXF endpoint is applied. MESSAGE MESSAGE is the raw message that is received from the transport layer. Configure the CXF endpoints with spring You can configure the CXF endpoint with the below spring configuration file, and you can also embed the endpoint into the camelContext tags. <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:cxf="http://activemq.apache.org/camel/schema/cxfEndpoint" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://activemq.apache.org/camel/schema/cxfEndpoint http://activemq.apache.org/camel/schema/cxf/cxfEndpoint.xsd http://activemq.apache.org/camel/schema/spring http://activemq.apache.org/camel/schema/spring/camel-spring.xsd "> <cxf:cxfEndpoint id="routerEndpoint" address="http://localhost:9003/CamelContext/RouterPort" serviceClass="org.apache.hello_world_soap_http.GreeterImpl"/> <cxf:cxfEndpoint id="serviceEndpoint" address="http://localhost:9000/SoapContext/SoapPort" wsdlURL="testutils/hello_world.wsdl" serviceClass="org.apache.hello_world_soap_http.Greeter" endpointName="s:SoapPort" serviceName="s:SOAPService" xmlns:s="http://apache.org/hello_world_soap_http" /> <camelContext id="camel" xmlns="http://activemq.apache.org/camel/schema/spring"> <route> <from uri="cxf:bean:routerEndpoint" /> <to uri="cxf:bean:serviceEndpoint" /> </route> </camelContext> </beans> Be sure to include the JAX-WS schemaLocation attribute specified on the root beans element. This allows CXF to validate the file and is required. Also note the namespace declarations at the end of the <cxf:cxfEndpoint/> tag--these are required because the combined "{namespace}localName" syntax is presently not supported for this tag's attribute values. The jaxws:endpoint element supports many additional attributes: Name Value PortName The endpoint name this service is implementing, it maps to the wsdl:[EMAIL PROTECTED] In the format of "ns:PORT_NAME" where ns is a namespace prefix valid at this scope. serviceName The service name this service is implementing, it maps to the wsdl:[EMAIL PROTECTED] In the format of "ns:SERVICE_NAME" where ns is a namespace prefix valid at this scope. wsdlURL The location of the WSDL. Can be on the classpath, file system, or be hosted remotely. bindingId The bindingId for the service model to use address The service publish address bus The bus name that will be used in the jaxws endpoint. serviceClass The class name of the SEI(Service Endpoint Interface) class which could have JSR181 annotation or not It also supports many child elements: Name Value cxf:inInterceptors The incoming interceptors for this endpoint. A list of <bean>s or <ref>s. cxf:inFaultInterceptors The incoming fault interceptors for this endpoint. A list of <bean>s or <ref>s. cxf:outInterceptors The outgoing interceptors for this endpoint. A list of <bean>s or <ref>s. cxf:outFaultInterceptors The outgoing fault interceptors for this endpoint. A list of <bean>s or <ref>s. cxf:properties A properties map which should be supplied to the JAX-WS endpoint. See below. cxf:dataBinding You can specify the which DataBinding will be use in the endpoint, This can be supplied using the Spring <bean class="MyDataBinding"/> syntax. cxf:binding You can specify the BindingFactory for this endpoint to use. This can be supplied using the Spring <bean class="MyBindingFactory"/> syntax. cxf:features The features that hold the interceptors for this endpoint. A list of <bean>s or <ref>s cxf:schemaLocations The schema locations for endpoint to use. A list of <schemaLocation>s cxf:serviceFactory The service factory for this endpoint to use. This can be supplied using the Spring <bean class="MyServiceFactory"/> syntax You can find more advanced examples which show how to provide interceptors and properties here: http://cwiki.apache.org/CXF20DOC/jax-ws-configuration.html How to consume the message from the camel-cxf endpoint in POJO data format The camel-cxf endpoint consumer POJO data format is based on the cxf invoker, so the message header has a property with the name of CxfConstants.OPERATION_NAME and the message body is a list of the SEI method parameters. from(SIMPLE_ENDPOINT_URI).process(new Processor() { public void process(final Exchange exchange) { Message request = exchange.getIn(); // Get the parameter list List parameter = in.getBody(List.class); // Get the operation name String operation = (String)in.getHeader(CxfConstants.OPERATION_NAME); Object result = null; if (operation.equals(ECHO_OPERATION)) { result = operation + " " + (String)parameter.get(0); } // Put the result back exchange.getOut().setBody(result); } }); How to prepare the message for the camel-cxf endpoint in POJO data format The camel-cxf endpoint producer is based on the cxf client API. First you need to specify the operation name in the message header , then add the method parameters into a list and set the message with this parameter list will be ok. The response message's body is an object array, you can get the result from that array. CxfExchange exchange = (CxfExchange)template.send(getJaxwsEndpointUri(), new Processor() { public void process(final Exchange exchange) { final List<String> params = new ArrayList<String>(); params.add(TEST_MESSAGE); exchange.getIn().setBody(params); exchange.getIn().setHeader(CxfConstants.OPERATION_NAME, GREET_ME_OPERATION); } }); org.apache.camel.Message out = exchange.getOut(); Object[] output = (Object[])out.getBody(); LOG.info("Received output text: " + output[0]); assertEquals("reply body on Camel", "Hello " + TEST_MESSAGE, output[0]); How to propagate camel-cxf endpoint's request and response context cxf client API provides a way to invoke the operation with request and response context. If you are using camel-cxf endpoint producer to invoke the outside web service, you can set the request context and get response context with below codes. CxfExchange exchange = (CxfExchange)template.send(getJaxwsEndpointUri(), new Processor() { public void process(final Exchange exchange) { final List<String> params = new ArrayList<String>(); params.add(TEST_MESSAGE); // Set the request context to the inMessage Map<String, Object> requestContext = new HashMap<String, Object>(); requestContext.put(BindingProvider.ENDPOINT_ADDRESS_PROPERTY, JAXWS_SERVER_ADDRESS); exchange.getIn().setBody(params); exchange.getIn().setHeader(Client.REQUEST_CONTEXT , requestContext); exchange.getIn().setHeader(CxfConstants.OPERATION_NAME, GREET_ME_OPERATION); } }); org.apache.camel.Message out = exchange.getOut(); Object[] output = (Object[])out.getBody(); LOG.info("Received output text: " + output[0]); // Get the response context form outMessage Map<String, Object> responseContext = CastUtils.cast((Map)out.getHeader(Client.RESPONSE_CONTEXT)); assertNotNull(responseContext); assertEquals("Get the wrong wsdl opertion name", "{http://apache.org/hello_world_soap_http}greetMe", responseContext.get("javax.xml.ws.wsdl.operation").toString()); See Also Configuring Camel Component Endpoint Getting Started

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