el-table使用懒加载时，新增和删除，数据不更新问题_el-table then 不更新

data() {
    treeNodeMap: new Map(), // 用于存储所有懒加载节点的数据
}
 
methods: {
    //懒加载时，将该节点的信息存入map集合
    loadExpandData(tree, treeNode, resolve) {
      this.treeNodeMap.set(tree.id,{tree, treeNode, resolve})
      getFgAssetTypeMain(tree.id).then(res => {  // 删除节点时，如果此节点没有为空时，走else
        if(res.data.list.length != 0) {
          resolve(res.data.list)
        }else {
          this.$set(this.$refs.refTable.$refs.JNPFTable.store.states.lazyTreeNodeMap, tree.id, {})
          getFgAssetTypeMain(tree.parent).then(res => {
            // 这里对el-table进行了二次封装，this.$refs可根据自己需求来改变
            this.$set(this.$refs.refTable.$refs.JNPFTable.store.states.lazyTreeNodeMap, tree.parent, res.data.list)
          })
        }
      })
    },
    //删除或修改某个节点时，调用该方法，并传入对应的节点id
    refreshRow(id) {
      const node = this.treeNodeMap.get(id)
      if(node != undefined) {
        const {tree, treeNode, resolve} = node
        this.loadExpandData(tree, treeNode, resolve)
      }
    },
 
}