摘要：本文使用的Activiti7具体版本是7.1.0.M1，springboot版本是2.1.5.RELEASE。本文重点讲解在activiti7中如何部署流程、启动流程实例，查询待办和完成任务。
项目搭建
首先，新建一个springboot项目，关于pom.xml文件内容如下：
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.shareniu.activiti7</groupId>
<artifactId>activiti7</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>shareniu-activiti7</name>
<description>activiti7</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.1</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-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 阿里 druid 数据源 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.16</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.activiti.dependencies/activiti-dependencies -->
<dependency>
<groupId>org.activiti.dependencies</groupId>
<artifactId>activiti-dependencies</artifactId>
<version>7.1.0.M1</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring-boot-starter</artifactId>
<version>7.1.0.M1</version>
</dependency>
<!-- Activiti生成流程图 -->
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-image-generator</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.security/spring-security-core -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>SpringBoot启动类
springboot启动类代码如下：
/**
* @author 分享牛
*/
@SpringBootApplication
public class ShareniuApplication {
public static void main(String[] args) {
SpringApplication.run(ShareniuApplication.class, args);
}
}数据源以及Activiti相关配置
数据源以及Activiti相关配置代码如下：
spring:
activiti:
db-history-used: true
check-process-definitions: true # 自动部署验证设置:true-开启（默认）、false-关闭
datasource:
url: jdbc:mysql://localhost:3306/reanod_workflow?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC&nullCatalogMeansCurrent=true
username: root
password: 123
driver-class-name: com.mysql.cj.jdbc.Driver
type: com.alibaba.druid.pool.DruidDataSource流程绘制
activiti7目前使用的Bpmn-js设计器，但是目前还没有发布正式版。activiti7流程设计器可以使用eclipse或者idea插件即可。接下来绘制一个简单的请假流程。流程图如下：
上面的流程非常简单，请假天数大于3天，总经理审批；否则分享牛审批。上图中的xml内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<bpmn:definitions xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:camunda="http://camunda.org/schema/1.0/bpmn" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="Definitions_0cqmcxw" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="3.1.1">
<bpmn:process id="leave" isExecutable="true">
<bpmn:startEvent id="StartEvent_1">
<bpmn:outgoing>SequenceFlow_1c8p9y9</bpmn:outgoing>
</bpmn:startEvent>
<bpmn:sequenceFlow id="SequenceFlow_1c8p9y9" sourceRef="StartEvent_1" targetRef="Task_05b1cv5" />
<bpmn:userTask id="Task_05b1cv5" name="请假申请" camunda:assignee="zs">
<bpmn:incoming>SequenceFlow_1c8p9y9</bpmn:incoming>
<bpmn:outgoing>SequenceFlow_1w1yfm1</bpmn:outgoing>
</bpmn:userTask>
<bpmn:exclusiveGateway id="ExclusiveGateway_0vb8dq6">
<bpmn:incoming>SequenceFlow_1w1yfm1</bpmn:incoming>
<bpmn:outgoing>SequenceFlow_1mz7srn</bpmn:outgoing>
<bpmn:outgoing>SequenceFlow_18xwjyq</bpmn:outgoing>
</bpmn:exclusiveGateway>
<bpmn:sequenceFlow id="SequenceFlow_1w1yfm1" sourceRef="Task_05b1cv5" targetRef="ExclusiveGateway_0vb8dq6" />
<bpmn:sequenceFlow id="SequenceFlow_1mz7srn" sourceRef="ExclusiveGateway_0vb8dq6" targetRef="Task_0v74omi">
<bpmn:conditionExpression xsi:type="bpmn:tFormalExpression">${day>3}</bpmn:conditionExpression>
</bpmn:sequenceFlow>
<bpmn:sequenceFlow id="SequenceFlow_18xwjyq" sourceRef="ExclusiveGateway_0vb8dq6" targetRef="Task_1lupuyu">
<bpmn:conditionExpression xsi:type="bpmn:tFormalExpression" language="${day<3}"></bpmn:conditionExpression>
</bpmn:sequenceFlow>
<bpmn:userTask id="Task_0v74omi" name="总经理审批" camunda:assignee="ls">
<bpmn:incoming>SequenceFlow_1mz7srn</bpmn:incoming>
<bpmn:outgoing>SequenceFlow_0kpiffh</bpmn:outgoing>
</bpmn:userTask>
<bpmn:userTask id="Task_1lupuyu" name="分享牛审批" camunda:assignee="ww">
<bpmn:incoming>SequenceFlow_18xwjyq</bpmn:incoming>
<bpmn:outgoing>SequenceFlow_1gxr4wh</bpmn:outgoing>
</bpmn:userTask>
<bpmn:endEvent id="EndEvent_1thnf0t">
<bpmn:incoming>SequenceFlow_1gxr4wh</bpmn:incoming>
</bpmn:endEvent>
<bpmn:sequenceFlow id="SequenceFlow_1gxr4wh" sourceRef="Task_1lupuyu" targetRef="EndEvent_1thnf0t" />
<bpmn:endEvent id="EndEvent_157xdub">
<bpmn:incoming>SequenceFlow_0kpiffh</bpmn:incoming>
</bpmn:endEvent>
<bpmn:sequenceFlow id="SequenceFlow_0kpiffh" sourceRef="Task_0v74omi" targetRef="EndEvent_157xdub" />
</bpmn:process>
<bpmndi:BPMNDiagram id="BPMNDiagram_1">
<bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="leave">
<bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">
<dc:Bounds x="156" y="186" width="36" height="36" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id="SequenceFlow_1c8p9y9_di" bpmnElement="SequenceFlow_1c8p9y9">
<di:waypoint x="192" y="204" />
<di:waypoint x="242" y="204" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNShape id="UserTask_0653qr3_di" bpmnElement="Task_05b1cv5">
<dc:Bounds x="242" y="164" width="100" height="80" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="ExclusiveGateway_0vb8dq6_di" bpmnElement="ExclusiveGateway_0vb8dq6" isMarkerVisible="true">
<dc:Bounds x="392" y="179" width="50" height="50" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id="SequenceFlow_1w1yfm1_di" bpmnElement="SequenceFlow_1w1yfm1">
<di:waypoint x="342" y="204" />
<di:waypoint x="392" y="204" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge id="SequenceFlow_1mz7srn_di" bpmnElement="SequenceFlow_1mz7srn">
<di:waypoint x="417" y="179" />
<di:waypoint x="417" y="88" />
<di:waypoint x="473" y="88" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge id="SequenceFlow_18xwjyq_di" bpmnElement="SequenceFlow_18xwjyq">
<di:waypoint x="417" y="229" />
<di:waypoint x="417" y="273" />
<di:waypoint x="473" y="273" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNShape id="UserTask_17d34ry_di" bpmnElement="Task_0v74omi">
<dc:Bounds x="473" y="48" width="100" height="80" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="UserTask_09upgmk_di" bpmnElement="Task_1lupuyu">
<dc:Bounds x="473" y="233" width="100" height="80" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="EndEvent_1thnf0t_di" bpmnElement="EndEvent_1thnf0t">
<dc:Bounds x="604" y="255" width="36" height="36" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id="SequenceFlow_1gxr4wh_di" bpmnElement="SequenceFlow_1gxr4wh">
<di:waypoint x="573" y="273" />
<di:waypoint x="604" y="273" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNShape id="EndEvent_157xdub_di" bpmnElement="EndEvent_157xdub">
<dc:Bounds x="604" y="70" width="36" height="36" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id="SequenceFlow_0kpiffh_di" bpmnElement="SequenceFlow_0kpiffh">
<di:waypoint x="573" y="88" />
<di:waypoint x="604" y="88" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</bpmn:definitions>
部署流程
部署流程直接使用RepositoryService即可，相关代码如下：
@Test
public void deploy() {
//创建一个部署对象
DeploymentBuilder deploymentBuilder = repositoryService.createDeployment().name("分享牛请假流程");
Deployment deployment = null;
InputStream in = this.getClass().getClassLoader().getResourceAsStream("processes/leave.bpmn20.xml");
deployment = repositoryService.createDeployment()
.name("请假流程")
//指定zip格式的文件完成部署
.addInputStream("shareniu.bpmn",in)
.deploy();//完成部署
}流程文档部署完毕之后，
会涉及到如下几张表。
- ACT_RE_DEPLOYMENT（部署表）
- ACT_RE_PROCDEF（流程定义表）
- ACT_GE_BYTEARRAY（资源表）
- ACT_GE_PROPERTY（通用属性表）
- ACT_RU_IDENTITYLINK（运行权限表）
启动流程
启动流程实例使用RuntimeService类。相关代码如下：
@Test
public void start() {
String processDefinitionKey ="leave";//每一个流程有对应的一个key这个是某一个流程内固定的写在bpmn内的
HashMap<String, Object> variables=new HashMap<>();
ProcessInstance instance = runtimeService
.startProcessInstanceByKey(processDefinitionKey,variables);
System.out.println("流程实例ID:"+instance.getId());
System.out.println("流程定义ID:"+instance.getProcessDefinitionId());
}startProcessInstanceByKey需要的参数，对应ACT_RE_PROCDEF表key_列的值。查询待办
查询待办任务使用TaskService，相关代码如下：
/**查询当前人的个人任务*/
@Test
public void findTask(){
List<Task> list = taskService.createTaskQuery()//创建任务查询对象
.list();
if(list!=null && list.size()>0){
for(Task task:list){
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());
}
}
}上述代码执行完毕，会查询任务表ACT_RU_TASK。启动实例之后，实例直接运转到请假申请节点。接下来开始完成该任务。
完成用户任务
