activiti基础

package org.crazyit.activiti;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.task.Task;

public class First {

	public static void main(String[] args) {
		//创建流程引擎
		ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
		//得到流程引擎存储服务组件
		RepositoryService repositoryService = engine.getRepositoryService();
		//得到运行时服务组件
		RuntimeService runtimeService = engine.getRuntimeService();
		//获取流程任务组件
		TaskService taskService = engine.getTaskService();
		//部署流程文件
		repositoryService.createDeployment()
			.addClasspathResource("bpmn/First.bpmn").deploy();
		//启动流程
		runtimeService.startProcessInstanceByKey("process1");
		//查询第一个任务
		Task task = taskService.createTaskQuery().singleResult();
		System.out.println("第一个任务完成前,当前任务名称: "+task.getName());
		//完成第一个任务
		taskService.complete(task.getId());
		//查询第二个任务
		task = taskService.createTaskQuery().singleResult();
		System.out.println("第二个任务完成前,当前任务名称: "+task.getName());
		//完成第二个任务(流程结束)
		taskService.complete(task.getId());
		task = taskService.createTaskQuery().singleResult();
		System.out.println("流程结束后，查找任务：" + task);
		// 退出
		System.exit(0);
	}
}