Activiti(四)建立一個最簡單的activiti項目

1.1Eclipse新建一個基本的java項目

1.2項目結構以下

（注：須要jar包太多本身添加）

1.3建立配置文件、建立本身的庫

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
       
       
       
	<!-- 流程引擎配置的bean -->
	<bean id="processEngineConfiguration"
		class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
		<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test" />
		<property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
		<property name="jdbcUsername" value="root" />
		<property name="jdbcPassword" value="123456" />
		<property name="databaseSchemaUpdate" value="true" /><!-- 相似於hibernate的檢測表是否創建 -->
	</bean>
	
	
</beans>

1.4建立流程配置文件

畫好流程後的文件

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
  <process id="myProcess" name="My process" isExecutable="true">
    <endEvent id="endevent1" name="End"></endEvent>
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask3" name="manager"></userTask>
    <userTask id="usertask4" name="worker"></userTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask4"></sequenceFlow>
    <sequenceFlow id="flow2" sourceRef="usertask4" targetRef="usertask3"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="usertask3" targetRef="endevent1"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_myProcess">
    <bpmndi:BPMNPlane bpmnElement="myProcess" id="BPMNPlane_myProcess">
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="630.0" y="171.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="160.0" y="160.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
        <omgdc:Bounds height="55.0" width="105.0" x="480.0" y="150.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask4" id="BPMNShape_usertask4">
        <omgdc:Bounds height="55.0" width="105.0" x="280.0" y="150.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="195.0" y="177.0"></omgdi:waypoint>
        <omgdi:waypoint x="280.0" y="177.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="385.0" y="177.0"></omgdi:waypoint>
        <omgdi:waypoint x="480.0" y="177.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="585.0" y="177.0"></omgdi:waypoint>
        <omgdi:waypoint x="630.0" y="188.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

1.5寫程序

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;

/**
 * 第一個流程運行類
 * @author yangenxiong
 *
 */
public class First {
	public static void main(String[] args)  {
		// 建立流程引擎
		ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
		// 獲得流程存儲服務組件
		RepositoryService repositoryService = engine.getRepositoryService();
		// 獲得運行時服務組件
		RuntimeService runtimeService = engine.getRuntimeService();
		// 獲取流程任務組件
		TaskService taskService = engine.getTaskService();
		// 部署流程文件
		repositoryService.createDeployment()
				.addClasspathResource("bpmn/First.bpmn").deploy();
		// 啓動流程
		runtimeService.startProcessInstanceByKey("process1");
		// 查詢第一個任務
		Task task = taskService.createTaskQuery().singleResult();
		System.out.println("第一個任務完成前，當前任務名稱：" + task.getName());
		// 完成第一個任務
		taskService.complete(task.getId());
		// 查詢第二個任務
		task = taskService.createTaskQuery().singleResult();
		System.out.println("第二個任務完成前，當前任務名稱：" + task.getName());
		// 完成第二個任務（流程結束）
		taskService.complete(task.getId());
		task = taskService.createTaskQuery().singleResult();
		System.out.println("流程結束後，查找任務：" + task);
		// 退出
		System.exit(0);
	}
}

程序運行後  會自動建表  走一個最簡單的activiti流程