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1、因为仿钉钉设计器里抄送人是一个服务任务，所以要根据这个服务任务进行处理

2、前端就是一个抄送，选择人

3、这里用了jeecg的选择人组件

<el-form-item prop="users" label="指定人员" v-if="activeData.assigneeType === 'user'"><div style="width:100%"><j-select-user-by-dept :zIndex="3000"v-model:value="activeData.users" :multi="true" :placeholder="`请选择${type}人`"@getSelectResult="handleSelectUsers"></j-select-user-by-dept></div></el-form-item>

4、后端对这个处理如下：

public class CcNode extends AssigneeNode {// 表单属性private List<FormProperty> formProperties = new ArrayList<>();// 操作权限private Map<String, Boolean> operations = new LinkedHashMap<>();@Overridepublic List<FlowElement> convert() {ArrayList<FlowElement> elements = new ArrayList<>();// 服务节点ServiceTask serviceTask = new ServiceTask();serviceTask.setId(this.getId());serviceTask.setName(this.getName());// serviceTask.setAsynchronous(true);serviceTask.setImplementationType(ImplementationType.IMPLEMENTATION_TYPE_CLASS);serviceTask.setImplementation("org.jeecg.modules.flowable.ServiceTask.ccDelegate");//增加扩展属性 add by nbachengMap<String, List<ExtensionElement>> extensionElements = new HashMap<String, List<ExtensionElement>>();ExtensionElement extensionElementTotal = new ExtensionElement();extensionElementTotal.setName("flowable:properties"); ExtensionElement extensionElement = new ExtensionElement();extensionElement.setName("flowable:property");ExtensionAttribute extensionAttributeName = new ExtensionAttribute();extensionAttributeName.setName("name");extensionAttributeName.setValue("ccUserList");extensionElement.addAttribute(extensionAttributeName);ExtensionAttribute extensionAttributeValue = new ExtensionAttribute();extensionAttributeValue.setName("value");extensionAttributeValue.setValue(StringUtils.join(this.getUsers(), ","));extensionElement.addAttribute(extensionAttributeValue);extensionElementTotal.addChildElement(extensionElement);extensionElements.put("ccUserList", CollUtil.newArrayList(extensionElementTotal));serviceTask.setExtensionElements(extensionElements);elements.add(serviceTask);// 下一个节点的连线Node child = this.getChild();SequenceFlow sequenceFlow = this.buildSequence(child);elements.add(sequenceFlow);// 下一个节点if (Objects.nonNull(child)) {child.setBranchId(this.getBranchId());List<FlowElement> flowElements = child.convert();elements.addAll(flowElements);}return elements;}}

4、实际的效果图与xml