activiti实现员工请假流程解析

//开启流程
		ProcessInstance processInstance = runtimeService
		.startProcessInstanceByKey(processKey, variables);
		processInstanceId = processInstance.getId();

Task task = taskService.createTaskQuery()//创建查询对象
				.processInstanceId(processInstanceId)//通过流程实例id来查询当前任务
				.singleResult();//获取单个查询结果

this.processEngine.getRuntimeService()
				.createProcessInstanceQuery()//获取查询对象
				.processInstanceId(processInstanceId)//根据id查询流程实例
				.singleResult();//获取查询结果,如果为空,说明这个流程已经执行完毕,否则,获取任务并执行

//开始进行流程
		while(this.processEngine.getRuntimeService()
				.createProcessInstanceQuery()//获取查询对象
				.processInstanceId(processInstanceId)//根据id查询流程实例
				.singleResult()//获取查询结果,如果为空,说明这个流程已经执行完毕,否则,获取任务并执行
				!=null){
			Task task = taskService.createTaskQuery()//创建查询对象
				.processInstanceId(processInstanceId)//通过流程实例id来查询当前任务
				.singleResult();//获取单个查询结果
			String taskName = task.getName();
			if(taskName.equals("发起申请")){//职员节点
				completeEmployeeTask(task);
			}else if(taskName.equals("领导审批")){//领导节点
				completeLeaderTask(task);
			}else{//经理节点
				completeJingliTask(task);
			}
		}

//职员提交申请
	public void completeEmployeeTask(Task task){
		//获取任务id
		String taskId = task.getId();
				
		//完成任务
		this.processEngine.getTaskService().complete(taskId);
		System.out.println("职员已经提交申请.......");
		
	}
	//领导审批
	public void completeLeaderTask(Task task){
		//获取任务id
		String taskId = task.getId();
				
		//领导意见
		Map<String, Object> variables = new HashMap<String, Object>();
		//variables.put("day",4);
		variables.put("leaderResult", 1);
		//完成任务
		this.processEngine.getTaskService().complete(taskId, variables);
		System.out.println("领导审核完毕........");
		
	}
	//经理审批
	public void completeJingliTask(Task task){
		//获取任务id
		String taskId = task.getId();
		String name = task.getName();
		//经理意见
		Map<String, Object> variables = new HashMap<String, Object>();
		variables.put("result", 0);
		//完成任务
		this.processEngine.getTaskService().complete(taskId, variables);
		System.out.println("经理审核完毕........,审核经理:"+name);
		
	}