SpringBoot整合Flowable

1. 配置

（1） 引入maven依赖

        <dependency>
            <groupId>org.flowable</groupId>
            <artifactId>flowable-spring-boot-starter</artifactId>
            <version>6.7.2</version>
        </dependency>
        <!-- MySQL连接 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.19</version>
        </dependency>

（2）配置文件

spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url= jdbc:mysql://localhost:3306/flowable?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
spring.datasource.username = root
spring.datasource.password= root

（3）启动项目即可在数据库自动生成相关表

（4）画流程图

       a. 安装 IDEA 插件：lowable BPMN visualizer    
       b. 在 resources 目录下新建 processes 目录，该目录下的流程文件将来会被自动部署。
       c. 在 processes 目录下，新建一个 BPMN 文件,固定后缀为.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:flowable="http://flowable.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.flowable.org/processdef">
  <process id="demo" name="demo" isExecutable="true">
    <startEvent id="sid-507da2f8-ca68-4e25-a256-c9e4e98a8e30"/>
    <userTask id="sid-57c1b617-c369-4556-8154-a620652b3ffd" name="申请人" flowable:assignee="${crew}" flowable:formFieldValidation="true"/>
    <sequenceFlow id="sid-14435c94-d0a5-4199-b6fb-c08739f014f3" sourceRef="sid-507da2f8-ca68-4e25-a256-c9e4e98a8e30" targetRef="sid-57c1b617-c369-4556-8154-a620652b3ffd" name="开始流程"/>
    <sequenceFlow id="sid-023ac358-3952-42fb-8f59-0ea3fb4d55bd" sourceRef="sid-57c1b617-c369-4556-8154-a620652b3ffd" targetRef="sid-e656adbe-9181-4852-9df4-3e6c79f6933a" name="通过"/>
    <userTask id="sid-e656adbe-9181-4852-9df4-3e6c79f6933a" name="组长" flowable:assignee="${leader}" flowable:formFieldValidation="true"/>
    <endEvent id="sid-312fd1bd-1a79-46f1-956c-b89aab8a03af"/>
    <sequenceFlow id="sid-dfe46275-5cb0-40cd-8bd3-b5b9c4178dd6" sourceRef="sid-e656adbe-9181-4852-9df4-3e6c79f6933a" targetRef="sid-312fd1bd-1a79-46f1-956c-b89aab8a03af"/>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_demo">
   
  </bpmndi:BPMNDiagram>
</definitions>

注：
        可使用第三方在线画流程图 ，例如： 流程设计器-演示 (tulangkj.com) 可用于生成流程文件与决策文件。

（5）调用相关API处理流程

    @Resource
    RuntimeService runtimeService;
    @Resource
    TaskService taskService;   
     /**
     * 通过流程id开启一个流程，并设置变量，用于流程图 ${name} 动态赋值
     */
    @Test
    void contextLoads() {
        HashMap<String, Object> variables = new HashMap<>();
        variables.put("leader","zp");
        variables.put("crew","zj");
        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("demo", variables);
        System.out.println(processInstance.getProcessInstanceId());
    }
 
    /**
     * 通过分配任务的人获取任务并处理任务
     */
    @Test
    void contextLoads1() {
        List<Task> list = taskService.createTaskQuery().taskAssignee("zp").orderByTaskId().desc().list();
        for (Task task : list) {
            taskService.complete(task.getId());
        }
    }