AntD的Tree组件提供了一些默认的展开和收起图标。但是，我们可以通过自定义Tree的Icon组件来使用自己的图标。以下是实现自定义图标的示例代码：

import { Tree } from 'antd';
import { FolderOutlined, FileOutlined, PlusSquareOutlined, MinusSquareOutlined } from '@ant-design/icons';

const { TreeNode } = Tree;

const treeData = [
  {
    title: 'parent 1',
    key: '0-0',
    children: [
      {
        title: 'parent 1-0',
        key: '0-0-0',
        children: [
          {
            title: 'leaf',
            key: '0-0-0-0',
            isLeaf: true,
          },
          {
            title: 'leaf',
            key: '0-0-0-1',
            isLeaf: true,
          },
        ],
      },
      {
        title: 'parent 1-1',
        key: '0-0-1',
        children: [
          {
            title: 'leaf',
            key: '0-0-1-0',
            isLeaf: true,
          },
        ],
      },
    ],
  },
];

// 自定义展开和收起图标的组件
const CustomIcon = ({ expanded, ...rest }) => {
  if (rest.isLeaf) {
    return ;
  }

  return expanded ?  : ;
};

const CustomTree = () => {
  return (
    }
    >
      {treeData.map((item) => (
        }
        >
          {item.children && item.children.map((child) => (
            }
            />
          ))}
        
      ))}