Activiti6.0.0 跟踪流程执行情况用红色框在流程图上标识路线跟节点

升级到Activiti6.0.0  之后，发现pvm 包整个被删掉了。。。。这样一来就导致之前的跟踪流失效了。代码连编译都通过不了。

因为pvm包没了，所以就不能再使用ActivityImpl 等相关类了。只能改成用org.activiti.bpmn.model包下的FlowNode类来替代。好在他们差不多，所以代码改动也不大。下面是完整代码：
    /**
 * @Author 葛明
 * @Note 读取流程资源
 * @Date 2017-1-3 15:11
 * @param processDefinitionId 流程定义ID
 * @param resourceName        资源名称
 */
@RequestMapping(value = "/read-resource")
public void readResource(String processDefinitionId, String resourceName,String pProcessInstanceId, HttpServletResponse response)
        throws Exception {
    // 设置页面不缓存
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);

    ProcessDefinitionQuery pdq = repositoryService.createProcessDefinitionQuery();
    ProcessDefinition pd = pdq.processDefinitionId(processDefinitionId).singleResult();

    if(resourceName.endsWith(".png") && StringUtils.isEmpty(pProcessInstanceId) == false)
    {
        getActivitiProccessImage(pProcessInstanceId,response);
        //ProcessDiagramGenerator.generateDiagram(pde, "png", getRuntimeService().getActiveActivityIds(processInstanceId));
    }
    else
    {
        // 通过接口读取
        InputStream resourceAsStream = repositoryService.getResourceAsStream(pd.getDeploymentId(), resourceName);

        // 输出资源内容到相应对象
        byte[] b = new byte[1024];
        int len = -1;
        while ((len = resourceAsStream.read(b, 0, 1024)) != -1) {
            response.getOutputStream().write(b, 0, len);
        }
    }
}


/**
 * 获取流程图像，已执行节点和流程线高亮显示
 */
public void getActivitiProccessImage(String pProcessInstanceId, HttpServletResponse response)
{
    //logger.info("[开始]-获取流程图图像");
    try {
        //  获取历史流程实例
        HistoricProcessInstance historicProcessInstance = historyService.createHistoricProcessInstanceQuery()
                .processInstanceId(pProcessInstanceId).singleResult();

        if (historicProcessInstance == null) {
            //throw new BusinessException("获取流程实例ID[" + pProcessInstanceId + "]对应的历史流程实例失败！");
        }
        else
        {
            // 获取流程定义
            ProcessDefinitionEntity processDefinition = (ProcessDefinitionEntity) ((RepositoryServiceImpl) repositoryService)
                    .getDeployedProcessDefinition(historicProcessInstance.getProcessDefinitionId());

            // 获取流程历史中已执行节点，并按照节点在流程中执行先后顺序排序
            List<HistoricActivityInstance> historicActivityInstanceList = historyService.createHistoricActivityInstanceQuery()
                    .processInstanceId(pProcessInstanceId).orderByHistoricActivityInstanceId().asc().list();

            // 已执行的节点ID集合
            List<String> executedActivityIdList = new ArrayList<String>();
            int index = 1;
            //logger.info("获取已经执行的节点ID");
            for (HistoricActivityInstance activityInstance : historicActivityInstanceList) {
                executedActivityIdList.add(activityInstance.getActivityId());

                //logger.info("第[" + index + "]个已执行节点=" + activityInstance.getActivityId() + " : " +activityInstance.getActivityName());
                index++;
            }

            BpmnModel bpmnModel = repositoryService.getBpmnModel(historicProcessInstance.getProcessDefinitionId());

            // 已执行的线集合
            List<String> flowIds = new ArrayList<String>();
            // 获取流程走过的线 (getHighLightedFlows是下面的方法)
            flowIds = getHighLightedFlows(bpmnModel,processDefinition, historicActivityInstanceList);



            // 获取流程图图像字符流
            ProcessDiagramGenerator pec = processEngine.getProcessEngineConfiguration().getProcessDiagramGenerator();
            //配置字体
            InputStream imageStream = pec.generateDiagram(bpmnModel, "png", executedActivityIdList, flowIds,"宋体","微软雅黑","黑体",null,2.0);

            response.setContentType("image/png");
            OutputStream os = response.getOutputStream();
            int bytesRead = 0;
            byte[] buffer = new byte[8192];
            while ((bytesRead = imageStream.read(buffer, 0, 8192)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            os.close();
            imageStream.close();
        }
        //logger.info("[完成]-获取流程图图像");
    } catch (Exception e) {
        System.out.println(e.getMessage());
        //logger.error("【异常】-获取流程图失败！" + e.getMessage());
        //throw new BusinessException("获取流程图失败！" + e.getMessage());
    }
}

public List<String> getHighLightedFlows(BpmnModel bpmnModel,ProcessDefinitionEntity processDefinitionEntity,List<HistoricActivityInstance> historicActivityInstances)
{
    SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //24小时制
    List<String> highFlows = new ArrayList<String>();// 用以保存高亮的线flowId

    for (int i = 0; i < historicActivityInstances.size() - 1; i++)
    {
        // 对历史流程节点进行遍历
        // 得到节点定义的详细信息
        FlowNode activityImpl = (FlowNode)bpmnModel.getMainProcess().getFlowElement(historicActivityInstances.get(i).getActivityId());


        List<FlowNode> sameStartTimeNodes = new ArrayList<FlowNode>();// 用以保存后续开始时间相同的节点
        FlowNode sameActivityImpl1 = null;

        HistoricActivityInstance activityImpl_ = historicActivityInstances.get(i);// 第一个节点
        HistoricActivityInstance activityImp2_ ;

        for(int k = i + 1 ; k <= historicActivityInstances.size() - 1; k++)
        {
            activityImp2_ = historicActivityInstances.get(k);// 后续第1个节点

            if ( activityImpl_.getActivityType().equals("userTask") && activityImp2_.getActivityType().equals("userTask") &&
                    df.format(activityImpl_.getStartTime()).equals(df.format(activityImp2_.getStartTime()))   ) //都是usertask，且主节点与后续节点的开始时间相同，说明不是真实的后继节点
            {

            }
            else
            {
                sameActivityImpl1 = (FlowNode)bpmnModel.getMainProcess().getFlowElement(historicActivityInstances.get(k).getActivityId());//找到紧跟在后面的一个节点
                break;
            }

        }
        sameStartTimeNodes.add(sameActivityImpl1); // 将后面第一个节点放在时间相同节点的集合里
        for (int j = i + 1; j < historicActivityInstances.size() - 1; j++)
        {
            HistoricActivityInstance activityImpl1 = historicActivityInstances.get(j);// 后续第一个节点
            HistoricActivityInstance activityImpl2 = historicActivityInstances.get(j + 1);// 后续第二个节点

            if (df.format(activityImpl1.getStartTime()).equals(df.format(activityImpl2.getStartTime()))  )
            {// 如果第一个节点和第二个节点开始时间相同保存
                FlowNode sameActivityImpl2 = (FlowNode)bpmnModel.getMainProcess().getFlowElement(activityImpl2.getActivityId());
                sameStartTimeNodes.add(sameActivityImpl2);
            }
            else
            {// 有不相同跳出循环
                break;
            }
        }
        List<SequenceFlow> pvmTransitions = activityImpl.getOutgoingFlows() ; // 取出节点的所有出去的线

        for (SequenceFlow pvmTransition : pvmTransitions)
        {// 对所有的线进行遍历
            FlowNode pvmActivityImpl = (FlowNode)bpmnModel.getMainProcess().getFlowElement( pvmTransition.getTargetRef());// 如果取出的线的目标节点存在时间相同的节点里，保存该线的id，进行高亮显示
            if (sameStartTimeNodes.contains(pvmActivityImpl)) {
                highFlows.add(pvmTransition.getId());
            }
        }

    }
    return highFlows;

}