項目地址https://gitee.com/lwj/flowable.git

代碼分支	flowable-base
視頻講解地址	https://space.bilibili.com/485524575/channel/detail?cid=94579

用戶名密碼

0000001	test
0000002	test
0000003	test
0000004	test

文章目錄

• • • 1. 演示
    • 2. 代碼分享

1. 演示

2. 代碼分享

public byte[] createImage(String processInstanceId) {//1.獲取當(dāng)前的流程實例ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();String processDefinitionId = null;List<String> activeActivityIds = new ArrayList<>();List<String> highLightedFlows = new ArrayList<>();//2.獲取所有的歷史軌跡線對象List<HistoricActivityInstance> historicSquenceFlows = historyService.createHistoricActivityInstanceQuery().processInstanceId(processInstanceId).activityType(BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW).list();historicSquenceFlows.forEach(historicActivityInstance -> highLightedFlows.add(historicActivityInstance.getActivityId()));//3. 獲取流程定義id和高亮的節(jié)點idif (processInstance != null) {//3.1. 正在運行的流程實例processDefinitionId = processInstance.getProcessDefinitionId();activeActivityIds = runtimeService.getActiveActivityIds(processInstanceId);} else {//3.2. 已經(jīng)結(jié)束的流程實例HistoricProcessInstance historicProcessInstance = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();processDefinitionId = historicProcessInstance.getProcessDefinitionId();//3.3. 獲取結(jié)束節(jié)點列表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. 獲取bpmnModel對象BpmnModel bpmnModel = flowableBpmnModelService.getBpmnModelByProcessDefId(processDefinitionId);//5. 生成圖片流InputStream inputStream = flowProcessDiagramGenerator.generateDiagram(bpmnModel, activeActivityIds, highLightedFlows);//6. 轉(zhuǎn)化成byte便于網(wǎng)絡(luò)傳輸byte[] datas = IoUtil.readInputStream(inputStream, "image inputStream name");return datas;}

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