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分类： java
2021-08-10 12:46:10
在正常的flowable就是显示当前节点，路径需要我们自己获取，特别是来回的驳回会导致节点混乱，这里主要就是如何正确的显示流程图
效果：
已经结束的流程
正在执行的流程
代码：1、生成图片
点击(此处)折叠或打开
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// 源码 1b23.com
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public byte[] createimage2(string processinstanceid) {
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//1.获取当前的流程实例
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processinstance processinstance = runtimeservice.createprocessinstancequery().processinstanceid(processinstanceid).singleresult();
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string processdefinitionid = null;
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list<string> activeactivityids = null;
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//2.获取所有的历史轨迹对象
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list<historicactivityinstance> list = historyservice.createhistoricactivityinstancequery()
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.processinstanceid(processinstanceid).list();
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map<string, historicactivityinstance> hisactivitymap = new hashmap<>();
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list.foreach(historicactivityinstance -> {
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if (!hisactivitymap.containskey(historicactivityinstance.getactivityid())) {
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hisactivitymap.put(historicactivityinstance.getactivityid(), historicactivityinstance);
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}
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});
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//3. 获取流程定义id和高亮的节点id
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if (processinstance != null) {
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//3.1. 正在运行的流程实例
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processdefinitionid = processinstance.getprocessdefinitionid();
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activeactivityids = runtimeservice.getactiveactivityids(processinstanceid);
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} else {
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//3.2. 已经结束的流程实例
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historicprocessinstance historicprocessinstance = historyservice.createhistoricprocessinstancequery().processinstanceid(processinstanceid).singleresult();
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processdefinitionid = historicprocessinstance.getprocessdefinitionid();
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activeactivityids = new arraylist<>();
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list<endevent> endevents = bpmnmodelservice.findendflowelement(processdefinitionid);
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list<string> finalactiveactivityids = activeactivityids;
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endevents.foreach(endevent -> {
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if (hisactivitymap.containskey(endevent.getid())) {
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finalactiveactivityids.add(endevent.getid());
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}
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});
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}
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//4. 获取流程定义的所有节点信息
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list<flownode> flownodes = bpmnmodelservice.findflownodes(processdefinitionid);
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map<string, flownode> activitymap = flownodes.stream().collect(collectors.tomap(flownode::getid, flownode -> flownode));
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list<string> highlightedflows = new arraylist<>();
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//5. 递归得到高亮线
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activeactivityids.foreach(activeactivityid -> this.gethighlightedflows(activitymap, hisactivitymap, activeactivityid, highlightedflows, activeactivityid));
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//6. 获取bpmnmodel对象
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bpmnmodel bpmnmodel = bpmnmodelservice.getbpmnmodelbyprocessdefid(processdefinitionid);
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//7. 生成图片流
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inputstream inputstream = flowprocessdiagramgenerator.generatediagram(bpmnmodel, activeactivityids, highlightedflows);
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//8. 转化成byte便于网络传输
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byte[] datas = ioutil.readinputstream(inputstream, "image inputstream name");
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return datas;
- }
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//from fhadmin.cn
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private void gethighlightedflows(map<string, flownode> flownodemap,
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map<string, historicactivityinstance> hisactivitymap,
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string activeactivityid,
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list<string> highlightedflows,
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string oldactivityid) {
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flownode flownode = flownodemap.get(activeactivityid);
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list<sequenceflow> incomingflows = flownode.getincomingflows();
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for (sequenceflow sequenceflow : incomingflows) {
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string sourcerefid = sequenceflow.getsourceref();
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if (hisactivitymap.containskey(sourcerefid) && !oldactivityid.equals(sourcerefid)) {
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highlightedflows.add(sequenceflow.getid());
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this.gethighlightedflows(flownodemap, hisactivitymap, sourcerefid, highlightedflows, oldactivityid);
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} else {
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if (hisactivitymap.containskey(sourcerefid)){
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highlightedflows.add(sequenceflow.getid());
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}
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break;
- } } }
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