工作流activiti的HelloWorld

接上篇，继续。

一、 在/src/main/resource 下，建立new -> activiti ->activiti diagram 

名字为HelloWorld

然后画图，

空园，是开始，实粗线园，是结束。

中间添加task，user task,

然后添加连接线，connection -> sequence flow

保存，后自动生成png图片。

空白处 点击，在properties 视图中，可以修改流程的id和名字。

点击各个节点，在properties视图，可以修改流程名字，

各个节点，再点击main config 点击 assignee，指定办理人。

二、部署流程

ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
    
    @Test
    public void Deploy() {
        RepositoryService repositoryService = this.engine.getRepositoryService();
        repositoryService.createDeployment().name("请假流程")
        .addClasspathResource("HelloWorld.bpmn")
        .addClasspathResource("HelloWorld.png").deploy();
    }

zip部署

@Test
    public void ZipDeploy2() {
        // 如果资源名字前加斜杠，资源部署在src/main/resource下，如果不加斜杠，资源部署在类的同名包下
        InputStream inputStream =  this.getClass().getResourceAsStream("/HelloWorld.zip");
        System.out.println(inputStream);
        ZipInputStream zipInputStream = new ZipInputStream(inputStream);
        RepositoryService repositoryService = this.engine.getRepositoryService();
        Deployment deploy = repositoryService.createDeployment().name("请假流程2").addZipInputStream(zipInputStream).deploy();
        System.out.println("Deploy name = " + deploy.getName());
        System.out.println("Deploy id = " + deploy.getId() );
     }

查询流程部署（非查询任务）

    @Test
    public void queryDef() {
        RepositoryService repositoryService = this.engine.getRepositoryService();
         List<Deployment> list = repositoryService.createDeploymentQuery().deploymentName("请假流程2").list();
        for (Deployment deployment : list) {
            System.out.println("deployment id "+deployment.getId());
            System.out.println("deployment name "+deployment.getName());
        }
         
    }

repositoryService.createProcessDefinitionQuery();  //查询流程定义

repositoryService.deleteDeployment(deploymentId); //删除部署定义

 repositoryService.deleteDeployment(deploymentId,cascade); //删除部署定义，级联删除，cascade取值true

查询流程图

ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deployId);

String processid  = processDefinition.getId();

InputStream input = repositoryService.getProcessDiagram(processid);

File file = new File("d:/"+processDefinition.getDiagramResourceName());

try{

BufferedOutputStream out = new BufferOutputStream(new FileOutputStream(file));

int len = 0;

byte[] b = new byte[1024];

while((len=inputStream.read(b))!=-1){

outputStream.write(b,0,len);

outputStream.flush();

}

outputStream.close();

inputStream.close();

}catch(FileNotFoundException e) {

e.printStackTrace();

}

 查询最新的流程定义

List<ProcessDefinition> list = repositorySerivice.createProcessDefinitionQuery().orderByProcessDefinition().asc().list();

if(null!=list&&list.size>0){

for(ProcessDefinition pd:list){

map.put(pd.getKey(),pd);

}

}

Collection<ProcessDefinition> values = map.value();

for(ProcessDefinition pd:values){

syso("流程定义Id"+pd.getId());

}

三、启动流程

@Test
    public void startProcess() {
        RuntimeService runtimeService = this.engine.getRuntimeService();
        //ProcessInstance startProcessInstanceById = runtimeService.startProcessInstanceById("HelloWorld:4:22504");
        ProcessInstance startProcessInstanceById = runtimeService.startProcessInstanceByKey("HelloWorld");
        System.out.println("startProcessInstanceById:" + startProcessInstanceById.getId());
    }
    

四、查找任务

@Test
    public void findProcess() {
        TaskService taskService = this.engine.getTaskService();
        List<Task> list = taskService.createTaskQuery().taskAssignee("张三").list();
        if(list!=null) {
            for (Task task : list) {
                System.out.println("id: "+task.getId());  // id: 27504
                System.out.println("process id" + task.getProcessInstanceId());
                System.out.println("name: "+task.getName());
                System.out.println("代理人： "+task.getAssignee());
                System.out.println("创建时间："+task.getCreateTime());
                System.out.println("描述："+task.getDescription());
            }
        }
    }

如果查找不到，看看流程图，是否有缺口，没有闭环

五、完成任务

@Test
    public void completeTask() {
        TaskService taskService = this.engine.getTaskService();
        String taskId = "27504";  //在ru_task 表中，可以通过上步查找到。
        taskService.complete(taskId);
    }