我的目标是在活动过程中成功调用WebService。 我正在使用Servicemix 5.0.0。我从示例apache-servicemix-5.0.0 / examples / activiti / activiti-camel开始，我通过功能成功运行：install。 然后我修改了OrderProcess.bpmn.xml文件，其中的主进程现在如下所示：
<process id="OrderProcess" isExecutable="true">
<startEvent id="start"/>
<sequenceFlow id="flow1" sourceRef="start" targetRef="Call_WS"/>
<serviceTask id="Call_WS" name="Call WS" activiti:class="org.apache.servicemix.examples.activiti.WsDelegate" >
<extensionElements>
<activiti:field name="wsdl" expression="http://localhost:8282/dodawanie?wsdl" />
<activiti:field name="operation" expression="sayHi" />
<activiti:field name="parameters" expression="${arg0}" />
<activiti:field name="returnValue" expression="sayHiResponse" />
</extensionElements>
</serviceTask>
<sequenceFlow id="flow2" sourceRef="Call_WS" targetRef="end"/>
<endEvent id="end"/>
</process>
我使用WsDelegate类作为示例来帮助从activiti进程调用WebService，它看起来如下所示：
package org.apache.servicemix.examples.activiti;
import java.util.ArrayList;
import java.util.StringTokenizer;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.Expression;
import org.activiti.engine.delegate.JavaDelegate;
import org.apache.cxf.endpoint.Client;
import org.apache.cxf.jaxws.endpoint.dynamic.JaxWsDynamicClientFactory;
import javax.xml.namespace.*;
public class WsDelegate implements JavaDelegate {
private Expression wsdl;
private Expression operation;
private Expression parameters;
private Expression returnValue;
public void execute(DelegateExecution execution) throws Exception {
String wsdlString = (String)wsdl.getValue(execution);
JaxWsDynamicClientFactory dcf = JaxWsDynamicClientFactory.newInstance();
Client client = dcf.createClient(wsdlString);
ArrayList paramStrings = new ArrayList();
if (parameters!=null) {
StringTokenizer st = new StringTokenizer( (String)parameters.getValue(execution), ",");
while (st.hasMoreTokens()) {
paramStrings.add(st.nextToken().trim());
}
}
Object response = client.invoke((String)operation.getValue(execution), paramStrings.toArray(new Object[0]));
if (returnValue!=null) {
String returnVariableName = (String) returnValue.getValue(execution);
execution.setVariable(returnVariableName, response);
}
}
}
我修改了示例类ActivitiRouteBuilder，这是修改后的代码： 包org.apache.servicemix.examples.activiti;
import static org.activiti.camel.ActivitiProducer.PROCESS_KEY_PROPERTY;
import java.util.HashMap;
import java.util.Map;
import org.apache.camel.Exchange;
import org.apache.camel.Handler;
import org.apache.camel.Message;
import org.apache.camel.builder.RouteBuilder;
/**
* Camel routes that interact with the business process defined in the
* OSGI-INF/activiti/OrderProcess.bpmn20.xml file
*/
public class ActivitiRouteBuilder extends RouteBuilder {
private final Helper helper = new Helper();
@Override
public void configure() throws Exception {
/*
* This route will start a new OrderProcess instance. Using the PROCESS_KEY_PROPERTY, we are assigning a
* business key to our process to allow for easier correlation in later processing steps. We are also
* sending a Map containing additional variables to add to the process instance.
*/
from("jetty:http://0.0.0.0:8484/test")
.setBody(bean(helper))
.setProperty(PROCESS_KEY_PROPERTY, simple("file:name"))
.to("activiti:OrderProcess")
.log("Process to handle incoming order file has been started (process instance id ${body})");
/*
* This route will notify a running OrderProcess of an order delivery event. Here too, we are setting the
* PROCESS_KEY_PROPERTY to correlate the delivery message with right order process instance.
*/
from("file:var/activiti-camel/delivery")
.log("Notifying process about delivery for order ${file:name}")
.setProperty(PROCESS_KEY_PROPERTY, simple("file:name"))
.to("activiti:OrderProcess:receiveDelivery");
/*
* The BPMN process can also trigger Camel routes as part of the process. In these routes, the variables that
* you added to the process are available as Exchange properties. The next two routes will be triggered while
* processing the order and the order delivery.
*/
from("activiti:OrderProcess:processOrder")
.log("Processing order ${property.orderid} created on ${property:timestamp}")
.log(" original message: ${property.message}");
from("activiti:OrderProcess:processDelivery")
.log("Processing delivery for order ${property.orderid} created on ${property:timestamp}")
.log(" original message: ${property.message}");
}
/*
* A few helper methods used for routing
*/
public static final class Helper {
/*
* This method will extract information from the Exchange (using Camel annotations) and put them in a
* Map that will be used for setting up the process' variables.
*/
@Handler
public Map getProcessVariables(Exchange exchange) {
Message in = exchange.getIn();
Map<String, Object> variables = new HashMap<String, Object>();
variables.put("message", "pusto");
variables.put("orderid", in.getHeader("id"));
variables.put("timestamp", "teraz");
return variables;
}
}
}
当我尝试通过调用http://localhost:8484/test开始此过程时
我得到了这个堆栈跟踪：
org.apache.camel.CamelExecutionException: Exception occurred during execution on the exchange: Exchange[Message: {timestamp=teraz, message=pusto, orderid=null}]
at org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1379)
at org.apache.camel.impl.DefaultExchange.setException(DefaultExchange.java:283)
at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:64)
at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:110)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.component.jetty.CamelContinuationServlet.service(CamelContinuationServlet.java:151)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:652)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1320)
at org.eclipse.jetty.servlets.MultiPartFilter.doFilter(MultiPartFilter.java:119)
at org.apache.camel.component.jetty.CamelFilterWrapper.doFilter(CamelFilterWrapper.java:44)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1291)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:443)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1044)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:372)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:978)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:363)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:486)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NoClassDefFoundError: Ljavax/xml/namespace/QName;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2308)
at java.lang.Class.getDeclaredFields(Class.java:1760)
at com.sun.xml.bind.v2.model.nav.ReflectionNavigator.getDeclaredFields(ReflectionNavigator.java:274)
at com.sun.xml.bind.v2.model.nav.ReflectionNavigator.getDeclaredFields(ReflectionNavigator.java:57)
at com.sun.xml.bind.v2.model.impl.ClassInfoImpl.findFieldProperties(ClassInfoImpl.java:377)
at com.sun.xml.bind.v2.model.impl.ClassInfoImpl.getProperties(ClassInfoImpl.java:308)
at com.sun.xml.bind.v2.model.impl.RuntimeClassInfoImpl.getProperties(RuntimeClassInfoImpl.java:176)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:243)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:100)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:81)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:209)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:95)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:81)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:315)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:330)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:466)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.(JAXBContextImpl.java:302)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1140)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:154)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:121)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:202)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:143)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:310)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:446)
at org.apache.cxf.endpoint.dynamic.DynamicClientFactory.createClient(DynamicClientFactory.java:393)
at org.apache.cxf.endpoint.dynamic.DynamicClientFactory.createClient(DynamicClientFactory.java:240)
at org.apache.cxf.endpoint.dynamic.DynamicClientFactory.createClient(DynamicClientFactory.java:233)
at org.apache.cxf.endpoint.dynamic.DynamicClientFactory.createClient(DynamicClientFactory.java:188)
at org.apache.servicemix.examples.activiti.WsDelegate.execute(WsDelegate.java:22)
at org.activiti.engine.impl.delegate.JavaDelegateInvocation.invoke(JavaDelegateInvocation.java:34)
at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
at org.activiti.engine.impl.bpmn.behavior.ServiceTaskJavaDelegateActivityBehavior.execute(ServiceTaskJavaDelegateActivityBehavior.java:49)
at org.activiti.engine.impl.bpmn.behavior.ServiceTaskJavaDelegateActivityBehavior.execute(ServiceTaskJavaDelegateActivityBehavior.java:40)
at org.activiti.engine.impl.bpmn.helper.ClassDelegate.execute(ClassDelegate.java:115)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:52)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:49)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:65)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:115)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:49)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:381)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:102)
at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:51)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.execute(FlowNodeActivityBehavior.java:36)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:44)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStartInitial.eventNotificationsCompleted(AtomicOperationProcessStartInitial.java:46)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStart.eventNotificationsCompleted(AtomicOperationProcessStart.java:45)
at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:56)
at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:546)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:541)
at org.activiti.engine.impl.persistence.entity.ExecutionEntity.start(ExecutionEntity.java:335)
at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:72)
at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:31)
at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
at org.activiti.engine.impl.interceptor.JtaTransactionInterceptor.execute(JtaTransactionInterceptor.java:59)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
at org.activiti.engine.impl.RuntimeServiceImpl.startProcessInstanceByKey(RuntimeServiceImpl.java:55)
at Proxyf138e743_9da0_45a4_be4e_6b2c8e65cd48.startProcessInstanceByKey(Unknown Source)
at org.activiti.camel.ActivitiProducer.startProcess(ActivitiProducer.java:93)
at org.activiti.camel.ActivitiProducer.process(ActivitiProducer.java:48)
at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
... 32 more
Caused by: java.lang.ClassNotFoundException: javax.xml.namespace.QName
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 137 more
我该怎么办才能让它运行？
答案 0 :(得分：0)
看起来您的应用程序包在加载类javax.xml.namespace.QName时遇到一些麻烦。你能仔细检查捆绑导入包吗？