1.什么事activiti？
Activiti是一个工作流引擎,可以将业务系统中复杂的业务流程抽取出来,使用专门的建模语言BPMN2.0进行定义,业务流程按照预先定义的流程进行执行,实现了系统的流程流activiti进行管理,减少业务系统由于流程变更进行系统升级改造的工作量,从而提高系统的健壮性,同时也减少了系统开发维护成本.
Activiti 的核心服务组件
- RepositoryService：提供一系列管理流程部署和流程定义的API。
- RuntimeService：在流程运行时对流程实例进行管理与控制。
- TaskService：对流程任务进行管理，例如任务提醒、任务完成和创建任务等。
- IdentityService：提供对流程角色数据进行管理的API，这些角色数据包括用户组、用户及它们之间的关系。
- ManagementService：提供对流程引擎进行管理和维护的服务。
- HistoryService：对流程的历史数据进行操作，包括查询、删除这些历史数据。
- FormService：表单服务。
业务流程模型 BPMN xml 配置文件
一个xml文件，activiti去解析这个文件，了解我们到底想干什么事。可以使用ideal插件【Activiti BPMN visualizer】来编辑这个文件，插件具体使用方法可以Google搜索一下，这里就不具体描述了
2.mysql数据库环境搭建
为什么需要mysql？
因为activiti会生成很多流程执行的表。表都是 ACT 开头，用以记录工作流产生的记录数据！如下图所示
表结构介绍
| 表分类 | 表名 | 解释 |
|---|---|---|
| 一般数据 | ||
| ACT_GE_BYTEARRAY | 通用的流程定义和流程资源 | |
| ACT_GE_PROPERTY | 系统相关属性 | |
| 流程历史记录 | ||
| ACT_HI_ACTINST | 历史的流程实例 | |
| ACT_HI_ATACHMENT | 历史的流程附件 | |
| ACT_HI_COMMENT | 历史的说明性信息 | |
| ACT_HI_DETAIL | 历史的流程运行中的细节信息 | |
| ACT_HI_IDENTITYLINK | 历史的流程运行过程中用户关系 | |
| ACT_HI_PROCINST | 历史的流程实例 | |
| ACT_HI_TASKINST | 历史的任务实例 | |
| ACT_HI_VARINST | 历史的流程运行中的变量信息 | |
| 流程定义表 | ||
| ACT_RE_DEPLOYMENT | 部署单元信息 | |
| ACT_RE_MODEL | 模型信息 | |
| ACT_RE_PROCDEF | 已部署的流程定义 | |
| 运行实例表 | ||
| ACT_RU_EVENT_SUBSCR | 运行时事件 | |
| ACT_RU_EXECUTION | 运行时流程执行实例 | |
| ACT_RU_IDNTITYLINK | 运行时用户关系信息,存储任务节点与参与者的相关信息 | |
| ACT_RU_JOB | 运行时作业 | |
| ACT_RU_TASK | 运行时任务 | |
| ACT_RU_VARIABLE | 运行时变量表 |
安装
docker run --name docker-mysql-5.7 -e MYSQL_ROOT_PASSWORD=123456 -p 3306:3306 -d mysql:5.7初始化
create database activity;默认用户和密码
msyql username：root
mysql password：1234563.代码工程
实现目的：实现流程驱动
pom.xml
<?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">
<parent>
<artifactId>springboot-demo</artifactId>
<groupId>com.et</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>activiti</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring-boot-starter-basic</artifactId>
<version>6.0.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
</dependencies>
</project>application.properties
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/activity?characterEncoding=utf8&useSSL=true
spring.datasource.username=root
spring.datasource.password=123456
spring.jpa.properties.hibernate.hbm2ddl.auto=update
spring.jpa.show-sql=true
server.session.timeout=10
server.tomcat.uri-encoding=UTF-8
server.port=8088test.bpmn20.xml
<?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" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="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/testm1510735932336" id="m1510735932336" name="">
<process id="leave" isExecutable="true" isClosed="false" processType="None">
<startEvent id="_2" name="StartEvent"/>
<endEvent id="_3" name="EndEvent"/>
<userTask id="approve" name="manager approve" activiti:assignee="${approve}"/>
<exclusiveGateway id="_5" name="ExclusiveGateway"/>
<sequenceFlow id="_6" sourceRef="approve" targetRef="_5"/>
<sequenceFlow id="_7" name="pass" sourceRef="_5" targetRef="_3">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${pass}]]></conditionExpression>
</sequenceFlow>
<userTask id="application" name="apply submit" activiti:assignee="${apply}"/>
<sequenceFlow id="_9" sourceRef="_2" targetRef="application"/>
<sequenceFlow id="_10" sourceRef="application" targetRef="approve"/>
<userTask id="modify" name="modify apply" activiti:assignee="${apply}"/>
<sequenceFlow id="_12" name="fail " sourceRef="_5" targetRef="modify">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${!pass}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="_13" sourceRef="modify" targetRef="approve"/>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_leave">
<bpmndi:BPMNPlane bpmnElement="leave" id="BPMNPlane_leave">
<bpmndi:BPMNShape bpmnElement="_2" id="BPMNShape__2">
<omgdc:Bounds height="35.0" width="35.0" x="15.0" y="60.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_3" id="BPMNShape__3">
<omgdc:Bounds height="35.0" width="35.0" x="630.0" y="63.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="approve" id="BPMNShape_approve">
<omgdc:Bounds height="55.0" width="85.0" x="315.0" y="50.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_5" id="BPMNShape__5">
<omgdc:Bounds height="40.0" width="40.0" x="505.0" y="60.5"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="application" id="BPMNShape_application">
<omgdc:Bounds height="55.0" width="85.0" x="135.0" y="50.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="modify" id="BPMNShape_modify">
<omgdc:Bounds height="55.0" width="85.0" x="315.0" y="150.0"/>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="_6" id="BPMNEdge__6">
<omgdi:waypoint x="400.0" y="77.0"/>
<omgdi:waypoint x="505.0" y="80.5"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_7" id="BPMNEdge__7">
<omgdi:waypoint x="545.0" y="80.5"/>
<omgdi:waypoint x="630.0" y="80.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_9" id="BPMNEdge__9">
<omgdi:waypoint x="50.0" y="77.0"/>
<omgdi:waypoint x="135.0" y="77.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_10" id="BPMNEdge__10">
<omgdi:waypoint x="220.0" y="77.0"/>
<omgdi:waypoint x="315.0" y="77.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_12" id="BPMNEdge__12">
<omgdi:waypoint x="525.0" y="100.5"/>
<omgdi:waypoint x="525.0" y="177.0"/>
<omgdi:waypoint x="400.0" y="177.0"/>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_13" id="BPMNEdge__13">
<omgdi:waypoint x="357.0" y="150.0"/>
<omgdi:waypoint x="357.0" y="105.0"/>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>controller
package com.et.activiti.controller;
import com.et.activiti.service.ActivityConsumerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
@RestController
public class HelloWorldController {
@Autowired
ActivityConsumerService activityConsumerService;
@RequestMapping(value="/startActivityDemo",method= RequestMethod.GET)
public boolean startActivityDemo(){
return activityConsumerService.startActivityDemo();
}
}service
package com.et.activiti.service;
import org.activiti.engine.task.TaskQuery;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
public interface ActivityConsumerService {
public boolean startActivityDemo();
}package com.et.activiti.service;
import java.util.HashMap;
import java.util.Map;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import org.activiti.engine.task.Task;
import org.activiti.engine.task.TaskQuery;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class ActivityConsumerServiceImpl implements ActivityConsumerService {
@Autowired
private RuntimeService runtimeService;
@Autowired
private TaskService taskService;
@Override
public boolean startActivityDemo() {
System.out.println("method startActivityDemo begin....");
Map<String, Object> map = new HashMap<String, Object>();
map.put("apply", "zhangsan");
map.put("approve", "lisi");
//flow start
ExecutionEntity pi1 = (ExecutionEntity) runtimeService.startProcessInstanceByKey("leave", map);
String processId = pi1.getId();
pi1.getExecutions().forEach(row->{
String taskId = row.getTasks().get(0).getId();
taskService.complete(taskId, map);//complete first step
Task task = taskService.createTaskQuery().processInstanceId(processId).singleResult();
String taskId2 = task.getId();
map.put("pass", false);
taskService.complete(taskId2, map);//refuse apply
System.out.println("method startActivityDemo end....");
});
return false;
}
}
以上只是一些关键代码，所有代码请参见下面代码仓库
代码仓库
- GitHub - Harries/springboot-demo: a simple springboot demo with some components for example: redis,solr,rockmq and so on.
4.测试
- 启动Spring Boot应用
- 访问http://127.0.0.1:8088/startActivityDemo
可能需要你先登录一下，因为activiti默认集成Spring security，默认的用户名user，密码是程序启动会自动生成一个，如下所示
Using generated security password: 86f027ef-93c2-46ee-a054-c1ada840e64d5.引用参考
- Spring Boot集成activiti快速入门Demo | Harries Blog™
- Activiti User Guide
