Activiti流程实例
一.流程部署(压缩包方式)
/** * 压缩包的方式部署流程 */ @Test public void deploymentByZip(){ //获取processEngine对象 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); //获取一个RepositoryService对象 RepositoryService repositoryService = processEngine.getRepositoryService(); //定义一个输入流，加载Zip文件 InputStream inputStream=this.getClass().getClassLoader().getResourceAsStream("bpmn/holiday.zip"); //定义一个ZIPInputStream对象 ZipInputStream zipInputStream=new ZipInputStream(inputStream); //流程部署 Deployment deploy = repositoryService.createDeployment() .addZipInputStream(zipInputStream) .name("请求审批流程") .key("holidayKey") .deploy(); System.out.println("流程名称："+deploy.getName()); }
二.流程定义的查看
/** * 流程定义信息的查看 */ @Test public void getProDef(){ //获取processEngine对象 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); //获取一个RepositoryService对象 RepositoryService repositoryService = processEngine.getRepositoryService(); //得到流程定义查看对象ProcessDefinitionQuery ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery(); //指定查看的流程 processDefinitionKey()指定流程定义的key值 orderByProcessDefinitionVersion根据流程定义版本号排序 List<ProcessDefinition> holiday = processDefinitionQuery.processDefinitionKey("myProcess_1").orderByProcessDefinitionVersion().desc().list(); for (ProcessDefinition proDef:holiday) { System.out.println("流程定义ID："+proDef.getId()); System.out.println("流程定义的名称："+proDef.getName()); System.out.println("流程定义的Key："+proDef.getKey()); System.out.println("流程定义的版本号："+proDef.getVersion()); } }
三.流程删除
/** * 删除流程： * 假设在删除时，当前正在有该流程实例执行，那么会导致删除失败 * 如果强制要求，则可以使用repositoryService.deleteDeployment("1",true); true代表级联删除 */ @Test public void deleteDeployment(){ //获取processEngine对象 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); //获取一个RepositoryService对象 RepositoryService repositoryService = processEngine.getRepositoryService(); //删除流程 repositoryService.deleteDeployment("1",true); }
四.获取数据库中流程资源信息
依赖:
<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.5</version> <scope>test</scope> </dependency>
/** * 从数据中读取资源文件到本地 */ @Test public void getResource() throws IOException { //获取processEngine对象 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); //获取一个RepositoryService对象 RepositoryService repositoryService = processEngine.getRepositoryService(); //获取到流程查询对象 ProcessDefinitionQuery processDefinitionQuery = repositoryService.createProcessDefinitionQuery(); //获取到流程资源 processDefinitionQuery.processDefinitionKey("myProcess_1"); //获取单一结果 ProcessDefinition processDefinition = processDefinitionQuery.singleResult(); //流程部署的ID String deploymentId = processDefinition.getDeploymentId(); //获取到bpmnResource InputStream bpmnStream = repositoryService.getResourceAsStream(deploymentId, processDefinition.getResourceName()); //获取到png InputStream pngStream = repositoryService.getResourceAsStream(deploymentId, processDefinition.getDiagramResourceName()); //构建输出流 OutputStream bpmnOut = new FileOutputStream("E:\\Test\\" + processDefinition.getResourceName()); OutputStream pngOut = new FileOutputStream("E:\\Test\\" + processDefinition.getDiagramResourceName()); //将数据输出到磁盘当中 IOUtils.copy(bpmnStream,bpmnOut); IOUtils.copy(pngStream,pngOut); //关流 pngOut.close(); bpmnOut.close(); pngStream.close(); bpmnStream.close(); }
执行效果:
五.业务系统和流程系统进行关联
/** * 启动流程实例和业务系统关联 * 正常应该先添加数据到业务表当中，拿到当前添加数据的主键ID，通过启动流程实例，将主键ID交给BuessniessKkey * 代表和流程系统进行关联 */ @Test public void startInstance(){ /** * 让张三在页面提交，然后拿到ID */ /** * 创建张三请假的实例流程 */ //获取processEngine对象 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); RuntimeService runtimeService = processEngine.getRuntimeService(); //生成流程 ProcessInstance holiday = runtimeService.startProcessInstanceByKey("myProcess_1","2"); /** * 张三提交请假审批 */ //获取一个TaskService对象 TaskService taskService = processEngine.getTaskService(); //获取张三的任务 Task task = taskService.createTaskQuery().taskAssignee("zhangsan").processDefinitionKey("myProcess_1").singleResult(); //任务审批 taskService.complete(task.getId()); }
六.流程激活和挂起
1.所有流程定义的挂起
/** * 所有流程定义的挂起 */ @Test public void allSuspend(){ //获取processEngine对象 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); //获取repositoryService对象 RepositoryService repositoryService = processEngine.getRepositoryService(); //获取流程定义 ProcessDefinition holiday = repositoryService.createProcessDefinitionQuery().processDefinitionKey("myProcess_1").singleResult(); //获取到当前流程定义是否为暂停状态 suspended方法为true代表为暂停 false就是运行的 boolean suspended = holiday.isSuspended(); if(suspended){ repositoryService.activateProcessDefinitionById(holiday.getId(),true,null); System.out.println("该流程定义激活"); }else{ repositoryService.suspendProcessDefinitionById(holiday.getId(),true,null); System.out.println("该流程定义暂停"); } }
再次执行
2.单个流程实例的挂起
/** * 单个流程实例的挂起 */ @Test public void singleSuspend(){ //获取processEngine对象 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine(); //获取RuntimeService对象 RuntimeService runtimeService = processEngine.getRuntimeService(); ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId("22501").singleResult(); //获取到当前流程定义是否为暂停状态 suspended方法为true代表为暂停 false就是运行的 boolean suspended = processInstance.isSuspended(); if(suspended){ runtimeService.activateProcessInstanceById("22501"); System.out.println("xx的请假流程激活"); }else{ runtimeService.suspendProcessInstanceById("22501"); System.out.println("xx的请假流程挂起"); } }
尝试处理挂起的流程
报出错误
