package com.yknife;

import java.util.Iterator;
import java.util.List;
import java.util.Set;

import junit.framework.TestCase;
import org.jbpm.api.*;
import org.jbpm.api.history.HistoryProcessInstance;
import org.jbpm.api.task.Task;

public class MyTask extends TestCase {
    
    ProcessEngine processEngine;
    public MyTask(){
        processEngine = Configuration.getProcessEngine();
    }
    
    public void setUp(){
        RepositoryService repositoryService = processEngine.getRepositoryService();
        repositoryService.createDeployment().addResourceFromClasspath("task.jpdl.xml").deploy();
    }
    public void testTask(){
        
        ExecutionService es = processEngine.getExecutionService();
        HistoryService hs = processEngine.getHistoryService();
        
        ProcessInstance pi = es.startProcessInstanceByKey("task");
        TaskService ts = processEngine.getTaskService();
        List<Task> list = ts.findPersonalTasks("yknife");
        Task task = list.get(0);
        String taskId = task.getId();
        ts.completeTask(taskId);
        
        //查看历史流程表,可以断言流程已经结束了
        HistoryProcessInstance hpi = hs.createHistoryProcessInstanceQuery().processInstanceId(pi.getId()).uniqueResult();
        assertTrue("ended".equals(hpi.getState()));
        
        //查看任务表任务,可以通过任务不存在了
        List<Task> taskList = ts.createTaskQuery().processInstanceId(pi.getId()).list();
        assertTrue(taskList.size()==0);
    }
}

------解决方案--------------------

findActiveActivityNames()的结果依然是task1

对于这个问题，你需要建2个任务，完成一个任务后，再试试下面的代码，需要重查一下流程。
Java code

pi = es.findProcessInstanceById(pi.getId());
Set set = pi.findActiveActivityNames();
        Iterator it = set.iterator();
        while(it.hasNext()){
            System.out.println(it.next());
        }