Activiti6.0流程图跟踪，标记已执行过的节点

最新推荐文章于 2022-12-06 11:11:47 发布

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最新推荐文章于 2022-12-06 11:11:47 发布

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分类专栏： activiti Java

本文链接：https://blog.youkuaiyun.com/qq_33371372/article/details/85268379

版权

本文介绍了如何在Activiti6.0中实现流程图的跟踪和高亮显示，通过创建自定义的MyProcessDiagramGenerator和MyProcessDiagramCanvas类，实现了对流程图的定制化改造，包括字体和高亮颜色的修改。

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需求是这样的，查询一个流程，图形化显示流程，并能标识当前流程的哪个节点

流程图：

子流程：

代码：

public class Main {
	
	private static final Logger log = LoggerFactory.getLogger(Main.class);
	
	public static void main(String[] args) {
		//创建流程引擎
		ProcessEngine processEngine = createProcessEngine();
		//部署流程文件
		ProcessDefinition processDefinition = deployProcessDefinition(processEngine);
		//启动流程
		ProcessInstance processInstance = startProcessInstance(processEngine,processDefinition);
		//处理任务
		//dealTask(processEngine,null);
		
		Task task = processEngine.getTaskService().createTaskQuery().singleResult();
		log.info("taskName:【{}】",task.getName());
		processEngine.getTaskService().complete(task.getId());
		
		InputStream image = generateProcessDiagram(processEngine,processInstance.getId());
		try {
			FileUtils.copyInputStreamToFile(image, new File("D:/d.png"));
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

	private static InputStream generateProcessDiagram(ProcessEngine processEngine, String processInstanceId) {
		// TODO Auto-generated method stub
		//获取历史流程实例
		HistoricProcessInstance historicProcessInstance = processEngine.getHistoryService().createHistoricProcessInstanceQuery()
		.processInstanceId(processInstanceId).singleResult();
		log.info("历史流程id:【{}】",historicProcessInstance.getId());
		//获取历史流程定义
		ProcessDefinitionEntity processDefinitionEntity = (ProcessDefinitionEntity) ((RepositoryServiceImpl) 
				processEngine.getRepositoryService()).getDeployedProcessDefinition(historicProcessInstance
						.getProcessDefinitionId());
		//查询历史节点
		List<HistoricActivityInstance> historicActivityInstanceList = processEngine.getHistoryService().createHistoricActivityInsta

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