Chapter 4: activiti RuntimeService settings get and get process variables, and the difference from taskService, set process variables when starting and completing tasks [easy to understand]

/**
	 * RuntimeService设置流程变量数据
	 */
	@Test
	public void setVariableRunTimeValue(){
//		TaskService taskService=processEngine.getTaskService();//获取任务
		RuntimeService runtimeService=processEngine.getRuntimeService();
		String executionId="42501";//更加任务id知道是哪个人物,设置流程变量.可以更加查看任务方法查看任务的id,可以到数据库直接看
		//下面设置任务的内容,比如请假流程,任务的第一节点也就是申请人要写请节哀的原因
		runtimeService.setVariable(executionId, "days", 4);//请假天数
		runtimeService.setVariable(executionId, "date", new Date());//请假日期
		runtimeService.setVariable(executionId, "reason", "haha");//请假原因
		
		//下面我们再测试一个额外的知识点,就是流程传输变量,这里我们再新建一个student对象,对象有id 和name两个属性,还有就是序列化传输
		Student student=new Student();
		student.setId(1);
		student.setName("zhangsan");
		runtimeService.setVariable(executionId, "student",student);//序列化对象
		
	}
	
	/**
	 * RunTimeService获取流程变量数据
	 */
	@Test
	public void getVariableRunTimeValues(){
//		TaskService taskService=processEngine.getTaskService();//获取任务
		RuntimeService runtimeService=processEngine.getRuntimeService();
		String executionId="42501";
		Integer day=(Integer) runtimeService.getVariableLocal(executionId, "days");//获取请假天数
		Date date=(Date) runtimeService.getVariable(executionId, "date");//请假日期
		String reason=(String) runtimeService.getVariable(executionId, "reason");//请假原因
		
		Student student2=(Student) runtimeService.getVariable(executionId, "student");//序列化对象
		System.out.println("请假天数："+day);
		System.out.println("请假日期："+date);
		System.out.println("请假原因:"+reason);
		System.err.println("请假对象："+student2.getId()+",,,"+student2.getName());
	}

请假天数：4
请假日期：Sun Apr 22 13:47:25 CST 2018
请假原因:haha
请假对象：1,,,zhangsan

/**
	 * Process variables are set when the process is started
	 */
	@Test
	public void RunTimeServicestart(){
		
		Student student=new Student();
		student.setId(1);
		student.setName("zhangsan");
		
		Map<String, Object> variables=new HashMap<String,Object>();
		variables.put("days", 66);
		variables.put("date",new Date());
		variables.put("reason", "faShao21111");
		variables.put("student", student);
		//Define the flow chartKEY字段值,keyThe value is what we defined earlierkey,可在act_re_procdef表中的key_字段中找到,
		//Run the startup processservicee
		ProcessInstance pi=processEngine.getRuntimeService()
		.startProcessInstanceByKey("studentLeaveProcess00",variables);
		System.out.println(pi.getId());
		System.out.println(pi.getProcessDefinitionId());
	}

/**
	 * 完成任务时设置流程变量
	 */
	@Test
	public void completeTaskVariables(){
		Student student=new Student();
		student.setId(1);
		student.setName("zhangsan");
		
		Map<String, Object> variables=new HashMap<String,Object>();
		variables.put("days", 66);
		variables.put("date",new Date());
		variables.put("reason", "enenene2222");
		variables.put("student", student);
		processEngine.getTaskService().complete("50002",variables);
	}