Activiti7工作流引擎：基础篇 Hello World

Posted 2022-01-04 vbirdbest

示例一：负责人固定

Assignee: 表示任务负责人。

public class HelloWorldTest 
    /**
     * 创建数据库表
     */
    @Test
    public void testCreateDBTable() 
        ProcessEngines.getDefaultProcessEngine();
    

    /**
     * 部署流程：将.bpmn文件保存到数据库中
     */
    @Test
    public void delopyBpmn() 
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        Deployment deploy = processEngine.getRepositoryService()
                .createDeployment()
                .addClasspathResource("bpmn/helloworld.bpmn")
                .name("请假流程")
                .deploy();
        // DeploymentEntity[id=1, name=请假流程]
        System.out.println(deploy);
    


    /**
     * 启动流程实例：发起申请请求
     */
    @Test
    public void startProcessInstance() 
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        ProcessInstance processInstance = processEngine.getRuntimeService()
                .startProcessInstanceByKey("helloworld");
        System.out.println(processInstance.getId());
        System.out.println(processInstance.getProcessInstanceId());
        System.out.println(processInstance.getProcessDefinitionId());
    

    /**
     * 办理(完成)任务：zhangsan审核自己通过，并将审批交给下个流程审核
     */
    @Test
    public void completeTask() 
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        TaskService taskService = processEngine.getTaskService();
        Task task = taskService
                .createTaskQuery()
                .processDefinitionKey("helloworld")
                .taskAssignee("zhangsan")
                .singleResult();
        taskService.complete(task.getId());
    

    /**
     * 办理(完成)任务：项目经理完成审批，并将任务交给下个负责人审批
     */
    @Test
    public void completeTaskPM() 
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        TaskService taskService = processEngine.getTaskService();
        Task task = taskService
                .createTaskQuery()
                .processDefinitionKey("helloworld")
                .taskAssignee("pm")
                .singleResult();
        taskService.complete(task.getId());
    

    /**
     * 办理(完成)任务：人事审批通过，整个流程结束
     */
    @Test
    public void completeTaskHR() 
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        TaskService taskService = processEngine.getTaskService();
        Task task = taskService
                .createTaskQuery()
                .processDefinitionKey("helloworld")
                .taskAssignee("hr")
                .singleResult();
        taskService.complete(task.getId());
    

示例二：负责人变量

负责人在实际开发过程中一般都不会写死，申请人写死难道只能这一个人能发起审批吗？所以一般负责人都是是UEL表达式先定义一个变量，在启动实例或者其他时候给这个变量再赋值。

@Test
public void startProcessInstance() 
    Map<String, Object> variables = new HashMap<>();
    variables.put("creator", "zhangsan");
    variables.put("pm", "狗经理");
    variables.put("hr", "小姐姐");
    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
    ProcessInstance processInstance = processEngine.getRuntimeService()
            .startProcessInstanceByKey("helloworld", variables);
    System.out.println(processInstance.getId());
    System.out.println(processInstance.getProcessInstanceId());
    System.out.println(processInstance.getProcessDefinitionId());