流程引擎的入门级使用教学

一、下载activiti安装包

链接：https://pan.baidu.com/s/1-_XjIsuZfhiEZn6iLul6-Q  密码：mfyk  （这是其他网友的链接）

二、eclipse安装activiti插件（我使用的是离线安装方式，在线安装我这也没试过！）

1、将安装包解压，解压文件目录如下：有四个jar包和一个压缩包

 

Activiti 流程引擎 java active 流程引擎_Activiti 流程引擎 java

2、将四个jar包放在eclipse的features目录中（我的开发工具用的是eclipse，sts也是一样）

 

Activiti 流程引擎 java active 流程引擎_Activiti 流程引擎 java_02

 

3、然后打开eclipse，鼠标点击help，选中install new software

 

Activiti 流程引擎 java active 流程引擎_bc_03

 

选中install software之后，点击add，出现如下界面

 

Activiti 流程引擎 java active 流程引擎_xml_04

 

4、Name: Activiti （给你安装的插件取个名字），取好之后选中local,选中安装包解压的目录，点击确定，再点击OK。

 

Activiti 流程引擎 java active 流程引擎_bc_05

 

5、将如下勾选框选中，然后一直next，一直到finish（当然中间会让你勾选同意选项）。

Activiti 流程引擎 java active 流程引擎_bc_06

 

6、安装完成后，重启eclipse，重启后点击file--->>new-->other，看到如下图示，说明安装完成

 

Activiti 流程引擎 java active 流程引擎_Activiti 流程引擎 java_07

 

 

三、开始使用进行编程测试

1、新建一个maven项目，项目目录如下：

 

Activiti 流程引擎 java active 流程引擎_Activiti 流程引擎 java_08

 

 

2、test.bpmn文件代码如下（新建.bpmn文件是以画图的形式表现的，要粘贴代码可以右键点击test.bpmn文件----->>open whit--------->>XML editor）：

<?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="test" name="My process" isExecutable="true">
    <startEvent id="start" name="Start"></startEvent>
    <endEvent id="end" name="End"></endEvent>
    <userTask id="usertask1" name="step1" activiti:assignee="kermit"></userTask>
    <userTask id="usertask2" name="step2" activiti:candidateUsers="kermit,gonzo"></userTask>
    <userTask id="usertask3" name="step3" activiti:candidateGroups="management,accountancy"></userTask>
    <sequenceFlow id="flow1" sourceRef="start" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="usertask2" targetRef="usertask3"></sequenceFlow>
    <sequenceFlow id="flow4" sourceRef="usertask3" targetRef="end"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_test">
    <bpmndi:BPMNPlane bpmnElement="test" id="BPMNPlane_test">
      <bpmndi:BPMNShape bpmnElement="start" id="BPMNShape_start">
        <omgdc:Bounds height="35.0" width="35.0" x="20.0" y="129.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="end" id="BPMNShape_end">
        <omgdc:Bounds height="35.0" width="35.0" x="610.0" y="129.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="110.0" y="119.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
        <omgdc:Bounds height="55.0" width="105.0" x="290.0" y="119.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
        <omgdc:Bounds height="55.0" width="105.0" x="450.0" y="119.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="55.0" y="146.0"></omgdi:waypoint>
        <omgdi:waypoint x="110.0" y="146.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="215.0" y="146.0"></omgdi:waypoint>
        <omgdi:waypoint x="290.0" y="146.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="395.0" y="146.0"></omgdi:waypoint>
        <omgdi:waypoint x="450.0" y="146.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
        <omgdi:waypoint x="555.0" y="146.0"></omgdi:waypoint>
        <omgdi:waypoint x="610.0" y="146.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

 

3、pom.xml文件配置如下：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
 
    <groupId>com.shh</groupId>
    <artifactId>activitytest</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
 
    <name>activitytest</name>
    <url>http://maven.apache.org</url>
 
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <activiti-version>5.18.0</activiti-version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>${activiti-version}</version>
        </dependency>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring</artifactId>
            <version>${activiti-version}</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-all</artifactId>
            <version>2.0.4</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.2</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-jdk14</artifactId>
            <version>1.7.2</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
 
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
 
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>3.2.2.RELEASE</version>
        </dependency>
    </dependencies>
</project>

4、activiti.cfg.xml文件如下配置，其中  <property name="jdbcPassword" value="" />  的value值是你本地数据库的面。

<?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">
     <bean id="processEngineConfiguration"  
        class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">  
        <property name="databaseSchemaUpdate" value="true" />  
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/activiti?autoReconnect=true&useUnicode=true&characterEncoding=utf8" />  
        <property name="jdbcDriver" value="com.mysql.jdbc.Driver" />  
        <property name="jdbcUsername" value="root" />  
        <property name="jdbcPassword" value="" />  
        <property name="jobExecutorActivate" value="true" />  
    </bean>  
</beans>

 

5、配置都做好之后，我们开始写测试类来测试效果，测试类代码如下：

package activitiTest.Demo;
 
import java.util.List;
 
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.task.Task;
import org.junit.Before;
import org.junit.Test;
 
/**
 * 测试流程
 * @author 20150205
 *
 */
public class TestActiviti {
    ProcessEngine processEngine = null;
    RepositoryService repositoryService = null;
    RuntimeService runtimeService = null;
    TaskService taskService = null;
 
    @Before
    public void init() {
        //加载spring配置文件，创建 ProcessEngine
        processEngine = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml")
                .buildProcessEngine();
        repositoryService = processEngine.getRepositoryService();
        runtimeService = processEngine.getRuntimeService();
        taskService = processEngine.getTaskService();
    }
 
 
    /**
     * 部署流程定义加载test.bpmn文件
     */
    @Test
    public void deploy(){
        //Deployment deployment  = repositoryService.createDeployment().addClasspathResource("diagrams/test.bpmn").deploy();
        Deployment deployment  = repositoryService.createDeployment().addClasspathResource("test.bpmn").deploy();
        String id = deployment.getId();
        System.out.println("***************部署流程定义完成***************" + id);
    }
    
    /**
     * 启动一个请假流程
     */
    @Test
    public void start() {
        for(int i = 0 ; i < 5; i++){
            String processId = runtimeService.startProcessInstanceByKey("test").getId();
            System.out.println("***************启动第" + i + "个请假流程完成***************" + processId);
        }
    }
     
 
    /**
     * 第一步
     */
    @Test
    public void step1(){
        System.out.println("***************step1流程开始***************");
        List<Task> tasks = taskService.createTaskQuery().taskAssignee("kermit").list();//kermit的任务
        List<Task> tasks2 = taskService.createTaskQuery().taskAssignee("gonzo").list();//gonzo的任务
        System.out.println(tasks.size());
        System.out.println(tasks2.size());//指定了kermit，所以gonzo的任务数量为0
        
        for (Task task : tasks) {
            System.out.println("kermit的任务taskname:" + task.getName() + ",id:" + task.getId());//任务的name与id
            System.out.println(task.getAssignee());//任务拥有者
            System.out.println(task.getProcessInstanceId());//流程实例id
            System.out.println(task.getProcessDefinitionId());//流程定义id
            taskService.complete(task.getId());//完成任务
        }
        
        System.out.println("kermit的任务数量：" + taskService.createTaskQuery().taskAssignee("kermit").count());
        System.out.println("***************step1流程结束***************");
    }
 
    /**
     * 第二步
     */
    @Test
    public void step2(){
        System.out.println("***************step2流程开始***************");
        List<Task> tasks = taskService.createTaskQuery().taskCandidateUser("kermit").list();//kermit可领取的任务
        List<Task> tasks2 = taskService.createTaskQuery().taskCandidateUser("gonzo").list();//gonzo可领取的任务
        System.out.println(tasks.size());
        System.out.println(tasks2.size());
        
        for (int i = 0 ; i < tasks.size(); i++) {
            Task task = tasks.get(i);
            System.out.println("任务taskname:" + task.getName() + ",id:" + task.getId());//任务的name与id
            if(i % 2 == 0){
                taskService.claim(task.getId(), "kermit");//kermit领取任务
            }else{
                taskService.claim(task.getId(), "gonzo");//gonzo领取任务
            }
        }
        
        tasks = taskService.createTaskQuery().taskAssignee("kermit").list();
        tasks2 = taskService.createTaskQuery().taskAssignee("gonzo").list();
        System.out.println("kermit的任务数量：" + tasks.size());
        System.out.println("gonzo的任务数量：" + tasks2.size());
        
        for(Task t : tasks){
            taskService.complete(t.getId());//完成任务
        }
        for(Task t : tasks2){
            taskService.complete(t.getId());//完成任务
        }
        tasks = taskService.createTaskQuery().taskAssignee("kermit").list();
        tasks2 = taskService.createTaskQuery().taskAssignee("gonzo").list();
        System.out.println("kermit的任务数量：" + tasks.size());
        System.out.println("gonzo的任务数量：" + tasks2.size());
        System.out.println("***************step2流程结束***************");
    }
    
    @Test
    public void step3(){
        System.out.println("***************step3流程开始***************");
        List<Task> tasks = taskService.createTaskQuery().taskCandidateGroup("management").list();//management组可领取的任务
        List<Task> tasks2 = taskService.createTaskQuery().taskCandidateGroup("accountancy").list();//accountancy组可领取的任务
        System.out.println(tasks.size());
        System.out.println(tasks2.size());
        
        for (int i = 0 ; i < tasks.size(); i++) {
            Task task = tasks.get(i);
            System.out.println("任务taskname:" + task.getName() + ",id:" + task.getId());//任务的name与id
            if(i % 2 == 0){
                taskService.claim(task.getId(), "kermit");
            }else{
                taskService.claim(task.getId(), "gonzo");
            }
        }
        tasks = taskService.createTaskQuery().taskAssignee("kermit").list();
        tasks2 = taskService.createTaskQuery().taskAssignee("gonzo").list();
        System.out.println("kermit的任务数量：" + tasks.size());
        System.out.println("gonzo的任务数量：" + tasks2.size());
        
        for(Task t : tasks){
            taskService.complete(t.getId());//完成任务
        }
        for(Task t : tasks2){
            taskService.complete(t.getId());//完成任务
        }
        tasks = taskService.createTaskQuery().taskAssignee("kermit").list();
        tasks2 = taskService.createTaskQuery().taskAssignee("gonzo").list();
        System.out.println("kermit的任务数量：" + tasks.size());
        System.out.println("gonzo的任务数量：" + tasks2.size());
        
        System.out.println("***************step3流程结束***************");
    }
}

四、数据库配置

1、使用Navicat创建一个名为activiti的数据库（不需要建表，运行项目时自动生成）

五、测试类运行效果如下：

***************部署流程定义完成***************60001

***************启动第0个请假流程完成***************60005

***************启动第1个请假流程完成***************60010

***************启动第2个请假流程完成***************60015

***************启动第3个请假流程完成***************60020

***************启动第4个请假流程完成***************60025

***************step1流程开始***************

5

0

kermit的任务taskname:step1,id:60008

kermit

60005

test:5:60004

kermit的任务taskname:step1,id:60013

kermit

60010

test:5:60004

kermit的任务taskname:step1,id:60018

kermit

60015

test:5:60004

kermit的任务taskname:step1,id:60023

kermit

60020

test:5:60004

kermit的任务taskname:step1,id:60028

kermit

60025

test:5:60004

kermit的任务数量：0

***************step1流程结束***************

***************step2流程开始***************

5

5

任务taskname:step2,id:60031

任务taskname:step2,id:60036

任务taskname:step2,id:60041

任务taskname:step2,id:60046

任务taskname:step2,id:60051

kermit的任务数量：3

gonzo的任务数量：2

kermit的任务数量：0

gonzo的任务数量：0

***************step2流程结束***************

***************step3流程开始***************

5

5

任务taskname:step3,id:60056

任务taskname:step3,id:60060

任务taskname:step3,id:60064

任务taskname:step3,id:60068

任务taskname:step3,id:60072

kermit的任务数量：3

gonzo的任务数量：2

kermit的任务数量：0

gonzo的任务数量：0

***************step3流程结束***************

 

千里之行，始于足下