这是vue3的写法，vue2改一下格式就ok
<a-table @expand="expandCustomRow"/>
const expandCustomRow = async (expanded, record) => {if (!expanded) returnconst id = record.idconst data = zidataSource.value;// 请求接口(用的时候换成自己的写法)const res = await $http.get(`${capiBase}`, {params: {pid: record.id,},})if (res.code === '0') {//获取到的子节点const children = res.list || []// children.forEach((opt) => {// // 如果children为空 不显示展开icon// try {//if (opt.children.length === 0) {// delete opt.children//}// } catch (err) {}// })// 如果数据有children字段，就不需要下面这句children.forEach((item) => {item.children = []})const dataSourceMap = (items) => {items.find((item) => {if (item.id === id) {//找到当前要展开的节点item.children = childrenreturn items}if (item.children && item.children.length > 0) {dataSourceMap(item.children)}})}dataSourceMap(data || [])setDataSource(data)} else {message.error(res.message)}}const setDataSource = (data) => {zidataSource.value = data}
效果如图
