11.activiti工作流-开始活动节点

流程图

部署流程定义+启动流程实例+查询流程实例+查询历史流程实例

package i_start;

import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.history.HistoricProcessInstance;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Test;

public class StartTest {
ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

/** 部署流程定义（从inputStream） */
@Test
public void deploymentProcessDefinition_inputStream() {
InputStream inputStreamBpmn = this.getClass().getResourceAsStream(
"start.bpmn");
InputStream inputStreamPng = this.getClass().getResourceAsStream(
"start.png");
Deployment deployment = processEngine.getRepositoryService()// 与流程定义和部署对象相关的Service
.createDeployment()// 创建一个部署对象
.name("开始活动")// 添加部署的名称
.addInputStream("start.bpmn", inputStreamBpmn)//
.addInputStream("start.png", inputStreamPng)//
.deploy();// 完成部署
System.out.println("部署ID：" + deployment.getId());//
System.out.println("部署名称：" + deployment.getName());//
}

/** 启动流程实例 */
@Test
public void startProcessInstance() {
// 流程定义的key
String processDefinitionKey = "start";
ProcessInstance pi = processEngine.getRuntimeService()// 与正在执行的流程实例和执行对象相关的Service
.startProcessInstanceByKey(processDefinitionKey);// 使用流程定义的key启动流程实例，key对应helloworld.bpmn文件中id的属性值，使用key值启动，默认是按照最新版本的流程定义启动
System.out.println("流程实例ID:" + pi.getId());// 流程实例ID 101
System.out.println("流程定义ID:" + pi.getProcessDefinitionId());// 流程定义ID
// helloworld:1:4
/** 判断流程是否结束，查询正在执行的执行对象表 */
ProcessInstance rpi=processEngine.getRuntimeService().createProcessInstanceQuery()//
.processDefinitionId(pi.getId())//
.singleResult();

//说明流程实例结束了
if(rpi==null){
/**查询历史，获取流程的相关信息*/
HistoricProcessInstance hpi=processEngine.getHistoryService()//
.createHistoricProcessInstanceQuery()//
.processInstanceId(pi.getId())//使用流程实例id查询
.singleResult();
System.out.println(hpi.getId()+"    "+hpi.getStartTime()+"   "+hpi.getEndTime()+"   "+hpi.getDurationInMillis());

}
}

}