Activiti工作流学习笔记入门（四）——流程实例的构建、判断状态、历史流程实例查询和历史活动查询

一时失言乱红尘 2022-04-16 01:53 354阅读 0赞

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第一节：构建学生请假审批流程  
第二节：执行对象概念  
第三节：判断流程实例状态  
第四节：历史流程实例查询  
第五节：历史活动查询

package com.java1234.activiti.flow;
    
    import java.util.List;
    
    import org.activiti.engine.ProcessEngine;
    import org.activiti.engine.ProcessEngines;
    import org.activiti.engine.history.HistoricActivityInstance;
    import org.activiti.engine.history.HistoricTaskInstance;
    import org.activiti.engine.repository.Deployment;
    import org.activiti.engine.runtime.ProcessInstance;
    import org.activiti.engine.task.Task;
    import org.junit.Test;
    
    public class StudentLeaveProcess {
    	
    	/**
    	 * 获取默认流程引擎实例，会自动读取activiti.cfg.xml文件
    	 */
    	private ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
    	
    	/**
    	 * 部署流程定义
    	 */
    	@Test
    	public void deploy() {
    		Deployment deployment = processEngine.getRepositoryService()//获取部署相关Service
    				.createDeployment()//创建部署
    				.addClasspathResource("diagrams/StudentLeaveProcess.bpmn")//加载资源文件
    				.addClasspathResource("diagrams/StudentLeaveProcess.png")//加载资源文件
    				.name("学生请假流程")//流程名称
    				.deploy();
    		System.out.println("流程部署ID："+deployment.getId());
    		System.out.println("流程部署Name："+deployment.getName());
    	}
    	
    	/**
    	 * 启动流程实例
    	 */
    	@Test
    	public void start() {
    		ProcessInstance pi = processEngine.getRuntimeService()//运行时Service
    				.startProcessInstanceByKey("studentLeaveProcess");//
    		System.out.println("流程实例ID："+pi.getId());
    		System.out.println("流程部署Name:"+pi.getProcessDefinitionId());
    				
    	}
    	/**
    	 * 查看任务
    	 */
    	@Test
    	public void findTask() {
    		String assignee = "学生";
    		List<Task> taskList = processEngine.getTaskService()
    			.createTaskQuery()
    			.taskAssignee(assignee)
    			.list();
    		for (Task task : taskList) {
    			System.out.println("任务ID："+task.getId());
    			System.out.println("任务名称："+task.getName());
    			System.out.println("任务创建时间："+task.getCreateTime());
    			System.out.println("任务为派人："+task.getAssignee());
    			System.out.println("流程实例ID："+task.getProcessDefinitionId());
    		}
    	}
    	
    	/**
    	 * 完成任务
    	 */
    	@Test
    	public void completeTask() {
    		processEngine.getTaskService()
    			.complete("15004");
    	}
    	/**
    	 * 查询流程状态（正在执行or已经执行结束）
    	 */
    	@Test
    	public void processState() {
    		ProcessInstance pi = processEngine.getRuntimeService()
    			.createProcessInstanceQuery()
    			.processInstanceId("15001")
    			.singleResult();
    		if(pi!=null){
    			System.out.println("流程正在执行！");
    		}else{
    			System.out.println("流程已经执行结束！");
    		}
    	}
    	/**
    	 * 历史任务查询
    	 */
    	@Test
    	public void historyTaskList() {
    		List<HistoricTaskInstance> list = processEngine.getHistoryService()
    				.createHistoricTaskInstanceQuery()
    				.processInstanceId("15001")
    				.finished()
    				.list();
    		for (HistoricTaskInstance hti : list) {
    			System.out.println("任务ID："+hti.getId());
    			System.out.println("流程实例ID："+hti.getProcessInstanceId());
    			System.out.println("任务名称："+hti.getName());
    			System.out.println("办理人："+hti.getAssignee());
    			System.out.println("开始时间："+hti.getStartTime());
    			System.out.println("结束时间："+hti.getEndTime());
    			System.out.println("=================================");
    		}
    	}
    	
    	/**
    	 * 历史活动查询
    	 */
    	@Test
    	public void historyActInstantceList() {
    		List<HistoricActivityInstance> list = processEngine.getHistoryService()//历史相关Service
    				.createHistoricActivityInstanceQuery()//创建历史活动实例查询
    				.processInstanceId("15001")//执行流程实例id
    				.finished()
    				.list();
    		for (HistoricActivityInstance hai : list) {
    			System.out.println("活动ID:"+hai.getId());
    			System.out.println("流程实例ID:"+hai.getProcessInstanceId());
    			System.out.println("活动名称："+hai.getActivityName());
    			System.out.println("办理人："+hai.getAssignee());
    			System.out.println("开始时间："+hai.getStartTime());
    			System.out.println("结束时间："+hai.getEndTime());
    			System.out.println("=================================");
    		}
    	}
    }

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