Activiti7 查询任务执行流程图【十】

待我称王封你为后i 2024-03-22 21:40 86阅读 0赞

### Activiti 7系列文章目录 ###

[文章代码下载][Link 1]

[Activiti7 工作流设计器【一】][Activiti7]  
[Activiti7 创建表【二】][Activiti7 1]  
[Activiti7 表结构介绍 【三】][Activiti7 _]  
[Activiti7 设计器创建流程 【四】][Activiti7 _ 1]  
[Activiti7 部署流程【五】][Activiti7 2]  
[Activiti7 查询流程【六】][Activiti7 3]  
[Activiti7 删除流程【七】][Activiti7 4]  
[Activiti7 生成SVG图片【八】][Activiti7 _SVG]  
[Activiti7 发起任务【九】][Activiti7 5]  
[Activiti7 查询任务执行流程图【十】][Activiti7 6]  
[Activiti7 完成任务【十一】][Activiti7 7]  
[Activiti7 历史数据【十二】][Activiti7 8]  
[Activiti7 任务办理人、委派、转办、持有人、候选人、候选人组、审批意见【十三】][Activiti7 9]  
[Activiti7 监听器【十四】][Activiti7 10]  
[Activiti7 流程变量【十五】][Activiti7 11]  
[Activiti7 网关Gateway【十六】][Activiti7 _Gateway]  
[Activiti7 整合SpringBoot【十七】][Activiti7 _SpringBoot]  
[Activiti7 多种任务类型【十八】][Activiti7 12]  
[Activiti7 子流程【十九】][Activiti7 13]  
[Activiti7 流程回退、流程拒绝【二十】][Activiti7 14]

14、Activiti7 查询历史流程实例、活动、任务

我们可以通过activiti的TaskService以及HistoryService来查询当前任务，以及将当前执行的流程图输出，这样我们在项目中就可以实时查询流程执行到的具体位置

### 查询当前任务节点 ###

//查询当前任务节点
    @Test
    public void testQueryCurrentTask(){
        
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        TaskService taskService = processEngine.getTaskService();
        List<Task> list = taskService.createTaskQuery().list();
        for (Task task : list) {
        
            System.out.println("task.getId() = " + task.getId());
            System.out.println("task.getName() = " + task.getName());
        }
    }

### 查询当前任务节点图 ###

这里最主要是的是查询到历史的人物活动节点，是开始、过程中、还是结束。。。

/**
     * 生成流程图
     */
    @Test
    public void generateTaskToSvg() throws IOException {
        
        ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
        TaskService taskService = processEngine.getTaskService();
        RuntimeService runtimeService = processEngine.getRuntimeService();
        RepositoryService repositoryService = processEngine.getRepositoryService();
        HistoryService historyService = processEngine.getHistoryService();
    	//这里只是返回所有任务最新的一个任务，实际开发中大家可以根据taskid来生成
        HistoricTaskInstance historicTaskInstance = historyService
                .createHistoricTaskInstanceQuery()
                .orderByTaskCreateTime().desc()
                .list().get(0);
    
        BpmnModel model = repositoryService.getBpmnModel(historicTaskInstance.getProcessDefinitionId());
    
        ProcessDiagramGenerator generator = new DefaultProcessDiagramGenerator();
    
        //lastTask是当前任务执行到的位置
        List<HistoricActivityInstance> lastTasks =
                historyService.createHistoricActivityInstanceQuery()
                        .processInstanceId(historicTaskInstance.getProcessInstanceId())
                        .orderByHistoricActivityInstanceStartTime()
                        .desc()
                        .list();
        List<String> lastTask = lastTasks.stream()
                .map(HistoricActivityInstance::getActivityId)
                .limit(1)
                .collect(Collectors.toList());
        lastTask.add(lastTasks.get(0).getActivityId());
    
        //七个参数分别是：
        //  BPMNModel
        //  高光节点
        //  高光顺序流
        //  活动字体名称
        //  标签字体名称
        //  批注字体名称
        //  生成默认关系图
        //  默认关系图映像文件名
        InputStream inputStream = generator.generateDiagram(
                model, lastTask, Collections.emptyList(), "宋体", "宋体", "宋体", true, "test");
    
        String imageName = "image-" + Instant.now().getEpochSecond() + ".svg";
        FileUtils.copyInputStreamToFile(inputStream, new File("processes/" + imageName));
    
    
    }

生成如下图，表示该流程执行到【经理审批】节点  
![在这里插入图片描述][e76562023e374ce180063d71b08b2edd.png]

[Link 1]: https://item.taobao.com/item.htm?ft=t&id=731521858952
[Activiti7]: https://blog.csdn.net/imjcoder/article/details/131960788
[Activiti7 1]: https://blog.csdn.net/imjcoder/article/details/131961178
[Activiti7 _]: https://blog.csdn.net/imjcoder/article/details/131961740
[Activiti7 _ 1]: https://blog.csdn.net/imjcoder/article/details/131961870
[Activiti7 2]: https://blog.csdn.net/imjcoder/article/details/131962201
[Activiti7 3]: https://blog.csdn.net/imjcoder/article/details/131962676
[Activiti7 4]: https://blog.csdn.net/imjcoder/article/details/131962897
[Activiti7 _SVG]: https://blog.csdn.net/imjcoder/article/details/131963020
[Activiti7 5]: https://blog.csdn.net/imjcoder/article/details/131963117
[Activiti7 6]: https://blog.csdn.net/imjcoder/article/details/131963429
[Activiti7 7]: https://blog.csdn.net/imjcoder/article/details/131973436
[Activiti7 8]: https://blog.csdn.net/imjcoder/article/details/131974783
[Activiti7 9]: https://blog.csdn.net/imjcoder/article/details/131980252
[Activiti7 10]: https://blog.csdn.net/imjcoder/article/details/131980411
[Activiti7 11]: https://blog.csdn.net/imjcoder/article/details/131980452
[Activiti7 _Gateway]: https://blog.csdn.net/imjcoder/article/details/131980479
[Activiti7 _SpringBoot]: https://blog.csdn.net/imjcoder/article/details/131980531
[Activiti7 12]: https://blog.csdn.net/imjcoder/article/details/131980636
[Activiti7 13]: https://blog.csdn.net/imjcoder/article/details/131980676
[Activiti7 14]: https://blog.csdn.net/imjcoder/article/details/131980731
[e76562023e374ce180063d71b08b2edd.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/14/f5e642b22d6f4ab982993a725b371c30.png