ant-design/components/tree/demo/customized-icon.md

order	title
6	[{zh-CN 自定义图标} {en-US Customize Icon}]

zh-CN

可以针对不同的节点定制图标。

en-US

You can customize icons for different nodes.

import { Tree } from 'antd';
import {
  DownOutlined,
  FrownOutlined,
  SmileOutlined,
  MehOutlined,
  FrownFilled,
} from '@ant-design/icons';

const treeData = [
  {
    title: 'parent 1',
    key: '0-0',
    icon: <SmileOutlined />,
    children: [
      {
        title: 'leaf',
        key: '0-0-0',
        icon: <MehOutlined />,
      },
      {
        title: 'leaf',
        key: '0-0-1',
        icon: ({ selected }) => (selected ? <FrownFilled /> : <FrownOutlined />),
      },
    ],
  },
];

ReactDOM.render(
  <Tree
    showIcon
    defaultExpandAll
    defaultSelectedKeys={['0-0-0']}
    switcherIcon={<DownOutlined />}
    treeData={treeData}
  />,
  mountNode,
);