state = {
    treeExpandedKeys: [], 	// tree 展开节点 ['string,'string']
    treeLoadedKeys: [], 	// tree 已经加载节点
    className={styles.eleTree}
    checkStrictly={true}
    expandedKeys={treeExpandedKeys}
    showIcon
    blockNode
    onExpand={this.handleTreeExpand}
    onSelect={this.handleTreeSelect}
    loadData={this.onLoadData}
    onLoad={this.onLoadTree}
    loadedKeys={this.props.treeLoadedKeys}
    {this.renderTreeNodes(treeData)}
</Tree>
handleTreeExpand = (keys) => {
    const { dispatch, treeExpandedKeys, treeLoadedKeys } = this.props
    let newLoadKeys = treeLoadedKeys
    // 判断当前是展开还是收起节点，当前展开的长度比之前的少，说明是收起
    if (treeExpandedKeys.length > keys.length) {
      // 当是收起的时候，把这个收起的节点从loadedKeys中移除
      // newLoadKeys = treeLoadedKeys.filter((i) => keys.includes(i))
      let newStr = ''
      treeLoadedKeys.map(item => {
        if (!keys.includes(item)) {
          newStr = item
      let newArr3 = []
      treeLoadedKeys.map(item => {
        if (this.treeExpandcheckStr(item, newStr)) {
          if (item.length < newStr.length) {
            newArr3.push(item)
        } else {
          newArr3.push(item)
      newLoadKeys = newArr3
      keys = newArr3
    dispatch({
      type: 'draw3/save',
      payload: {
        treeLoadedKeys: newLoadKeys,
        treeExpandedKeys: keys
onLoadTree = loadedKeys => {
    const { dispatch } = this.props
    dispatch({
      type: 'draw3/save',
      payload: {
        treeLoadedKeys: loadedKeys