Activiti 环境搭建及部署
微冷 2021/12/13 Activi
# 1、资料地址
# 2、插件安装(idea)
插件是为了方便在开发工具中查看和修改流程图
# 2.1 离线安装
- 插件地址:https://github.com/valb3r/flowable-bpmn-intellij-plugin/releases/
- 下载activiti-bpmn-plugin.zip
- File -> Settings -> Plugins -> 【小齿轮图标】-> Install Plugin from Dist...
# 2.2 在线安装
- File -> Settings -> Plugins:搜索Activiti BPMN visualizer
- 安装
# 2.3 常见问题
问:我的 Activiti/Flowable 引擎文件有.bpmn扩展名而不是bpmn20.xml,我该如何打开它们。
A:导航到 文件>设置>工具> Activiti BPMN 插件配置(或Flowable BPMN 插件配置)。
在字段Supported extensions add 中bpmn,该字段值为bpmn20.xml,bpmn. 现在你应该可以打开它了。
# 3、环境搭建及准备
不做某框架的集成,只做最简单的代码演示使用,先按照以下步骤操作,能运行看到结果后再去了解代码含义和数据库对应关系
# 3.1 创建最简单的一个maven项目
- File -> New -> Project -> Maven -> next
- 填写maven坐标信息 -> Finish
# 3.2 引入依赖包
修改pom.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<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>top.biupia</groupId>
<artifactId>ActivitiDemo</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<activiti-version>6.0.0</activiti-version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</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.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.6</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.7.6</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!-- Mysql驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>public</id>
<name>aliyun nexus</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>public</id>
<name>aliyun nexus</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
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# 3.3 数据库配置文件
在resources下创建activiti.cfg.xml,并填写一下内容
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
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
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<bean id="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
<!-- 连接数据的配置 -->
<property name="jdbcDriver" value="com.mysql.jdbc.Driver"></property>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8&nullCatalogMeansCurrent=true"></property>
<property name="jdbcUsername" value="root"></property>
<property name="jdbcPassword" value="root"></property>
<!-- 没有表创建表,可以在代码中配置 -->
<!--<property name="databaseSchemaUpdate" value="true"></property>-->
</bean>
</beans>
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# 3.4 编写流程图
在resources下创建diagrams文件夹(可省略),然后再文件夹下创建HelloWorld.bpmn文件,并填写一下内容
<?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="helloworld" name="helloworldProcess" isExecutable="true">
<startEvent id="startevent1" name="Start"/>
<endEvent id="endevent1" name="End"/>
<userTask id="usertask1" name="提交申请" activiti:assignee="依依"/>
<userTask id="usertask2" name="审批【部门经理审批】" activiti:assignee="尔康"/>
<userTask id="usertask3" name="审核【总经理审批】" activiti:assignee="三叔"/>
<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"/>
<sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"/>
<sequenceFlow id="flow3" sourceRef="usertask2" targetRef="usertask3"/>
<sequenceFlow id="flow4" sourceRef="usertask3" targetRef="endevent1"/>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_helloworld">
<bpmndi:BPMNPlane bpmnElement="helloworld" id="BPMNPlane_helloworld">
<bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
<omgdc:Bounds height="35.0" width="35.0" x="840.00006" y="75.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
<omgdc:Bounds height="35.0" width="35.0" x="840.0" y="575.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
<omgdc:Bounds height="55.0" width="105.0" x="805.0" y="185.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
<omgdc:Bounds height="55.0" width="130.0" x="793.0" y="315.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
<omgdc:Bounds height="55.0" width="130.0" x="798.0" y="446.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="857.00006" y="110.0"/>
<omgdi:waypoint x="857.0" y="185.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="857.0" y="240.0"/>
<omgdi:waypoint x="858.0" y="315.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="858.0" y="370.0"/>
<omgdi:waypoint x="858.0" y="446.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
<omgdi:waypoint x="858.0" y="501.0"/>
<omgdi:waypoint x="857.0" y="575.0"/>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
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在该文件上鼠标右击或者在该文件打开的视图中鼠标右击,如下图所示 生成流程图图片,在打开的流程图界面中右键然后选在保存图片,如下图所以
# 3.5 代码及数据库初始化
数据库通过代码直接生成,按照流程图使用流程,代码部分分为以下几个测试代码
- 1、数据库初始化
- 2、部署流程
- 3、查询流程
- 4、启动流程实例
- 5、查询流程实例
- 6、完成流程任务
代码结构如图及主要java代码如下
package top.biupia;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Test;
import java.util.List;
/**
* description: HelloWorld <br>
* date: 2021/12/14 17:11 <br>
* author: fuyd <br>
*/
public class HelloWorld {
/**
* 内部实现调用resources = classLoader.getResources("activiti.cfg.xml");加载数据库配置,所以配置一个activiti.cfg.xml文件即可使用
*/
ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
// 初始化数据库表
@Test
public void init() {
// 获得引擎配置,可以修改配置完成自己想要的操作
ProcessEngineConfiguration processEngineConfiguration = processEngine.getProcessEngineConfiguration();
/**
* public static final String DB_SCHEMA_UPDATE_FALSE = "false";不能自动创建表,需要表存在
* public static final String DB_SCHEMA_UPDATE_CREATE_DROP = "create-drop";先删除表再创建表
*
* 使用下面的配置,完成自动创建表,在xml中直接使用后面的值
* public static final String DB_SCHEMA_UPDATE_TRUE = "true";如果表不存在,自动创建表
*/
processEngineConfiguration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
}
/**
* 部署流程定义
*/
@Test
public void deploymentProcessDefinition() {
// RepositoryService 与流程定义和部署对象相关的Service
Deployment deployment = processEngine.getRepositoryService()
//创建一个部署对象
.createDeployment()
//添加部署的名称
.name("部署流程")
//从classpath的资源中加载,一次只能加载一个文件
.addClasspathResource("diagrams/HelloWorld.bpmn")
//从classpath的资源中加载,一次只能加载一个文件
.addClasspathResource("diagrams/HelloWorld.png")
//完成部署
.deploy();
/**
* 部署流程后,会在 act_re_deployment、act_re_procdef、act_ge_bytearray表中添加数据;
* act_re_deployment 部署对象表
* act_re_procdef 流程定义表
* act_ge_bytearray 二进制数据表,存储通用的流程定义和流程资源
*
* act_ge_property 系统相关属性,属性数据表存储整个流程引擎级别的数据,初始化表结构时,会默认插入三条记录。
*/
System.out.println("部署ID:" + deployment.getId());
System.out.println("部署名称:" + deployment.getName());
}
/**
* 查询流程定义构造器
*/
@Test
public void findProcess() {
// 流程定义和部署相关服务类
List<ProcessDefinition> list = processEngine.getRepositoryService()
//流程定义查询
.createProcessDefinitionQuery()
// //act_re_procdef.DEPLOYMENT_ID_
// .deploymentId("1")
// //act_re_procdef.KEY_
// .processDefinitionKey("helloworld")
// //act_re_procdef.NAME_
// .processDefinitionName("helloworldProcess")
// //act_re_procdef.ID_
// .processDefinitionId("helloworld:1:4")
//单条数据
//.singleResult()
.list();
for (ProcessDefinition processDefinition : list) {
//act_re_procdef.DEPLOYMENT_ID_ 部署流程的ID (对应act_re_deployment表ID)
System.out.println("dep:" + processDefinition.getDeploymentId());
//act_re_procdef.KEY_
System.out.println("Key:" + processDefinition.getKey());
//act_re_procdef.NAME_
System.out.println("Name:" + processDefinition.getName());
//act_re_procdef.ID_ act_re_procdef主键ID
System.out.println("ID:" + processDefinition.getId());
}
}
/**
* 启动流程实例
*/
@Test
public void startProcessInstance() {
// RuntimeService 启动流程service
//流程定义的key
String processDefinitionKey = "helloworld";
//与正在执行的流程实例和执行对象相关的Service
ProcessInstance pi = processEngine.getRuntimeService()
//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
.startProcessInstanceByKey(processDefinitionKey);
//流程实例ID 格式如:101
System.out.println("流程实例ID:" + pi.getId());
//流程定义ID 格式如:helloworld:1:4
System.out.println("流程定义ID:" + pi.getProcessDefinitionId());
}
/**
* 查询当前人的个人任务
*/
@Test
public void findMyPersonalTask() {
String assignee = "依依";// 尔康,三叔;在流程图中查看activiti:assignee对应的值即可
//与正在执行的任务管理相关的Service:TaskService
List<Task> list = processEngine.getTaskService()
//创建任务查询对象
.createTaskQuery()
//指定个人任务查询,指定办理人
.taskAssignee(assignee)
//获取查询列表
.list();
// 输出数据
list.forEach(task -> {
System.out.println("任务ID:" + task.getId());
System.out.println("任务名称:" + task.getName());
System.out.println("任务的创建时间:" + task.getCreateTime());
System.out.println("任务的办理人:" + task.getAssignee());
System.out.println("流程实例ID:" + task.getProcessInstanceId());
System.out.println("执行对象ID:" + task.getExecutionId());
System.out.println("流程定义ID:" + task.getProcessDefinitionId());
});
}
/**
* 完成我的任务
*/
@Test
public void completeMyPersonalTask() {
//任务ID
String taskId = "302";
//与正在执行的任务管理相关的Service
processEngine.getTaskService()
.complete(taskId);
System.out.println("完成任务:任务ID:" + taskId);
}
/**
* 删除流程,执行该测试用例后数据库会清空
*/
@Test
public void delete() {
List<ProcessDefinition> list = processEngine.getRepositoryService().createProcessDefinitionQuery().list();
list.forEach(t -> {
// Deletes the given deployment and cascade deletion to process instances, history process instances and jobs.
// 删除给定流程部署定义(deployment),并且级联删除掉process instances, history process instances and jobs
// 如果cascade参数为false,那么就不会级联删除
processEngine.getRepositoryService().deleteDeployment(t.getDeploymentId(), true);
});
System.out.println(processEngine.getRepositoryService().createProcessDefinitionQuery().count());
}
}
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