工作流实战_11_flowable 流程实例 跟踪流程

项目地址	​​https://gitee.com/lwj/flowable.git​​
代码分支	flowable-base
视频讲解地址	​​https://space.bilibili.com/485524575/channel/detail?cid=94579​​

用户名	密码
0000001	test
0000002	test
0000003	test
0000004	test

文章目录

• ​​1. 演示​​
• ​​2. 代码分享​​

1. 演示

2. 代码分享

public byte[] createImage(String processInstanceId) {
        //1.获取当前的流程实例
        ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
        String processDefinitionId = null;
        List<String> activeActivityIds = new ArrayList<>();
        List<String> highLightedFlows = new ArrayList<>();
        //2.获取所有的历史轨迹线对象
        List<HistoricActivityInstance> historicSquenceFlows = historyService.createHistoricActivityInstanceQuery()
                .processInstanceId(processInstanceId).activityType(BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW).list();
        historicSquenceFlows.forEach(historicActivityInstance -> highLightedFlows.add(historicActivityInstance.getActivityId()));
        //3. 获取流程定义id和高亮的节点id
        if (processInstance != null) {
            //3.1. 正在运行的流程实例
            processDefinitionId = processInstance.getProcessDefinitionId();
            activeActivityIds = runtimeService.getActiveActivityIds(processInstanceId);
        } else {
            //3.2. 已经结束的流程实例
            HistoricProcessInstance historicProcessInstance = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
            processDefinitionId = historicProcessInstance.getProcessDefinitionId();
            //3.3. 获取结束节点列表
            List<HistoricActivityInstance> historicEnds = historyService.createHistoricActivityInstanceQuery()
                    .processInstanceId(processInstanceId).activityType(BpmnXMLConstants.ELEMENT_EVENT_END).list();
            List<String> finalActiveActivityIds = activeActivityIds;
            historicEnds.forEach(historicActivityInstance -> finalActiveActivityIds.add(historicActivityInstance.getActivityId()));
        }
        //4. 获取bpmnModel对象
        BpmnModel bpmnModel = flowableBpmnModelService.getBpmnModelByProcessDefId(processDefinitionId);
        //5. 生成图片流
        InputStream inputStream = flowProcessDiagramGenerator.generateDiagram(bpmnModel, activeActivityIds, highLightedFlows);
        //6. 转化成byte便于网络传输
        byte[] datas = IoUtil.readInputStream(inputStream, "image inputStream name");
        return datas;
    }