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zhouweixin edited this page May 6, 2018
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工作流引擎Activiti6 - 实例01代码
1. 下载activiti6, 地址: https://www.activiti.org/
- src -- source folder, 用来存放各种源文件
- lib -- folder, 存放各种jar包
- resource -- source folder, 配置文件和相应的资源文件
- activiti
- log4j
- mysql-connnector-java
- activiti.cfg.xml -- activiti默认加载的配置文件, 主要是对数据库的配置, 这里用的是mysql数据库, 所以需要提前创建act数据库
<?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/act" />
<property name="jdbcDriver" value="com.mysql.jdbc.Driver" />
<property name="jdbcUsername" value="root" />
<property name="jdbcPassword" value="root" />
<property name="databaseSchemaUpdate" value="true" />
</bean>
</beans>
- log4j.properties -- 日志文件默认加载的配置文件
log4j.rootLogger=INFO, stdout
# Console Appender
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern= %d{hh:mm:ss,SSS} [%t] %-5p %c %x - %m%n
# Custom tweaks
log4j.logger.com.codahale.metrics=WARN
log4j.logger.com.ryantenney=WARN
log4j.logger.com.zaxxer=WARN
log4j.logger.org.apache=WARN
log4j.logger.org.hibernate=WARN
log4j.logger.org.hibernate.engine.internal=WARN
log4j.logger.org.hibernate.validator=WARN
log4j.logger.org.springframework=WARN
log4j.logger.org.springframework.web=WARN
log4j.logger.org.springframework.security=WARN
- MyProcess.bpmn -- 创建的一个流程, 任意创建一个流程都可运行
<?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">
<startEvent id="startevent1" name="Start"></startEvent>
<userTask id="usertask1" name="task1"></userTask>
<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
<userTask id="usertask2" name="task2"></userTask>
<sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow3" sourceRef="usertask2" targetRef="endevent1"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_myProcess">
<bpmndi:BPMNPlane bpmnElement="myProcess" id="BPMNPlane_myProcess">
<bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
<omgdc:Bounds height="35.0" width="35.0" x="70.0" y="120.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
<omgdc:Bounds height="55.0" width="105.0" x="150.0" y="110.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
<omgdc:Bounds height="55.0" width="105.0" x="300.0" y="110.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
<omgdc:Bounds height="35.0" width="35.0" x="450.0" y="120.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="105.0" y="137.0"></omgdi:waypoint>
<omgdi:waypoint x="150.0" y="137.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="255.0" y="137.0"></omgdi:waypoint>
<omgdi:waypoint x="300.0" y="137.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="405.0" y="137.0"></omgdi:waypoint>
<omgdi:waypoint x="450.0" y="137.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>public class Demo1 {
/**
* 部署流程
*/
@Test
public void deployProcess() {
// 默认去加载resource下的activiti.cfg.xml配置文件，可以查看源码
// 通过默认的方法创建流程引擎:这里主要是数据库的配置
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 【存储服务】
RepositoryService repositoryService = engine.getRepositoryService();
// 部署流程文件：文件内容和流程图存储到数据表【act_ge_bytearray】中
repositoryService.createDeployment().addClasspathResource("MyProcess.bpmn").deploy();
}
/**
* 执行流程
*/
@Test
public void doProcess() {
// 通过默认的方法创建流程引擎:这里主要是数据库的配置
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 【运行时服务】
RuntimeService runService = engine.getRuntimeService();
// 【任务服务】
TaskService taskService = engine.getTaskService();
// 启动流程
ProcessInstance processInstance = runService.startProcessInstanceByKey("myProcess");
// 普通员工完成请假的任务
Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).singleResult();
System.out.println("当前流程节点：" + task.getName());
taskService.complete(task.getId());
// 经理审核任务
task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).singleResult();
System.out.println("当前流程节点：" + task.getName());
taskService.complete(task.getId());
task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).singleResult();
System.out.println("流程结束后：" + task);
engine.close();
System.exit(0);
}
}
- 第一次执行会比较慢, 因为程序会在act数据库里创建28张activiti用到的表
- 创建一个流程实例, 并按次序执行任务1和任务2
结束