转载请注明出处:https://www.cnblogs.com/rolayblog/p/10444866.html
我当时遇到这个问题的时候很懵,各种度娘谷歌,始终找不到解决办法。无奈,只有断点跟源码一步一步的看,最终找到了问题所在。然后根据自己有限的思维和经验修改了,下面上代码。
1 Model modelData = repositoryService.getModel(modelId); 2 repositoryService.saveModel(modelData); 3 ObjectNode modelNode = (ObjectNode) new ObjectMapper() 4 .readTree(repositoryService.getModelEditorSource(modelData.getId())); 5 BpmnModel model = new BpmnJsonConverter().convertToBpmnModel(modelNode);
在convertToBpmnModel的386行有如下代码片段
1 // boundary events only contain attached ref id 2 for (Process process : bpmnModel.getProcesses()) { 3 postProcessElements(process, process.getFlowElements()); 4 }
断点调试process.getFlowElements()中可以看到此时监听已经没有了,问题就在这里,需要我们自己来解析一次监听,下面是我自己写的,只解析了taskListeners,如有需要可自行扩展添加。
1 private Collection<FlowElement> addLostListenter(Collection<FlowElement> elements, ArrayNode shapesArrayNode) { 2 Collection<FlowElement> newelements=new ArrayList<>(); 3 for (FlowElement flowElement : elements) { 4 5 JsonNode thenode = null; 6 // 查找bpmn节点对应的xml节点 7 for (JsonNode node : shapesArrayNode) { 8 JsonNode properties = node.get(EDITOR_SHAPE_PROPERTIES); 9 if (properties != null) { 10 JsonNode overrideidnode = properties.get(PROPERTY_OVERRIDE_ID); 11 if (overrideidnode != null) { 12 if (StringUtils.isNotEmpty(overrideidnode.asText())) { 13 if (overrideidnode.asText().equals(flowElement.getId())) { 14 thenode = node; 15 // 找到当前对应的xml节点跳出 16 break; 17 } 18 19 } else { 20 String resourceId = node.get(EDITOR_SHAPE_ID).asText(); 21 if (StringUtils.isNotEmpty(resourceId)) { 22 if (resourceId.equals(flowElement.getId())) { 23 thenode = node; 24 // 找到当前对应的xml节点跳出 25 break; 26 } 27 28 } 29 } 30 31 } else { 32 String resourceId = node.get(EDITOR_SHAPE_ID).asText(); 33 if (StringUtils.isNotEmpty(resourceId)) { 34 if (resourceId.equals(flowElement.getId())) { 35 thenode = node; 36 // 找到当前对应的xml节点跳出 37 break; 38 } 39 } 40 41 } 42 } 43 } 44 if (thenode != null&flowElement.getClass().equals(UserTask.class)) { 45 // 获取tasklisteners节点 46 47 FlowElement newflowelement= addTaskListenerToflowElement(flowElement,thenode); 48 newelements.add(newflowelement); 49 }else 50 { 51 newelements.add(flowElement); 52 } 53 } 54 return newelements; 55 }
然后更改386行处的代码如下:
1 // boundary events only contain attached ref id 2 for (Process process : bpmnModel.getProcesses()) { 3 4 Collection<FlowElement> elements = process.getFlowElements(); 5 Collection<FlowElement> newelements=addLostListenter(elements, shapesArrayNode); 6 postProcessElements(process, newelements); 7 }
然后再调用就能解析到监听了,如果大家有更好的方法,欢迎讨论。