activiti5.11跳转

activiti5.11的跳转问题，除了在流程定义文件中使用分支节点控制流程的转向外，在java程序代码中同样可以控制流程的转向。
如在流程定义文件中：

<process id="process1" name="process1" isExecutable="true">

<startEvent id="startevent1" name="Start"></startEvent>

<sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="serviceTask1"></sequenceFlow>
<serviceTask id="serviceTask1" name="serviceTask1" activiti:class="com.activiti.testcase.turn.ServiceTask1Listener"/>

<sequenceFlow id="s2" sourceRef="serviceTask1" targetRef="userTask2" ></sequenceFlow>
<sequenceFlow id="s3" sourceRef="serviceTask1" targetRef="manualTask1" ></sequenceFlow>

<userTask id="userTask2" name="userTask2" activiti:assignee="gonzo"></userTask>
<manualTask id="manualTask1" name="manualTask1"></manualTask>

<sequenceFlow id="s4" targetRef="userTask2" sourceRef="endevent1"></sequenceFlow>
<sequenceFlow id="s5" targetRef="manualTask1" sourceRef="endevent1"></sequenceFlow>

<endEvent id="endevent1" name="End"></endEvent>
</process>

 <process id="process1" name="process1" isExecutable="true">
      
    <startEvent id="startevent1" name="Start"></startEvent>
    
    <sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="serviceTask1"></sequenceFlow>
    <serviceTask id="serviceTask1" name="serviceTask1" activiti:class="com.activiti.testcase.turn.ServiceTask1Listener"/>
    
    <sequenceFlow id="s2" sourceRef="serviceTask1" targetRef="userTask2" ></sequenceFlow>
    <sequenceFlow id="s3" sourceRef="serviceTask1" targetRef="manualTask1" ></sequenceFlow>
    
    <userTask id="userTask2" name="userTask2" activiti:assignee="gonzo"></userTask>
    <manualTask id="manualTask1" name="manualTask1"></manualTask>

    <sequenceFlow id="s4" targetRef="userTask2" sourceRef="endevent1"></sequenceFlow>
    <sequenceFlow id="s5" targetRef="manualTask1" sourceRef="endevent1"></sequenceFlow>
    
    <endEvent id="endevent1" name="End"></endEvent>
  </process>

其中serviceTask 的类中是实现流程转向的具体代码。
首先说明：要使用serviceTask调用外部的java类，则该java类必须实现JavaDelegate或ActivityBehavior接口，若需要控制流程的转向则需实现 ActivityBehavior接口，因为该接口功能更强大。
来看ServiceTask1Listener类，该类只有一个execute方法：

public class ServiceTask1Listener
implements ActivityBehavior {

public void execute(ActivityExecution execution)
throws Exception {

//流程定义id
String procDefId = execution.getProcessDefinitionId();

RepositoryServiceImpl repositoryService = (RepositoryServiceImpl)execution.getEngineServices().getRepositoryService();

//流程定义的实现
ProcessDefinitionImpl processDefinitionImpl = (ProcessDefinitionImpl)repositoryService.getDeployedProcessDefinition(procDefId);

//当前执行的活动节点
ActivityImpl ac = (ActivityImpl)execution.getActivity();
//创建输出的执行路径
TransitionImpl transition = ac.createOutgoingTransition("flow1");

//设置输出路径的目标节点
ActivityImpl destination = new ActivityImpl("serviceTask1", processDefinitionImpl);
destination.setActivityBehavior(this);
//设置目标节点
transition.setDestination(destination);

List<PvmTransition> pvms = execution.getActivity().getOutgoingTransitions();
//[ s2,s3,flow1]
//选用刚刚创建的执行路径
execution.take(pvms.get(2));

}
}