React开发（267）:ant design upload简单上传

## 如果只是简单的上传，没必要写 customRequest
```javascript
 <Upload
    name="file"
    action={`${BASE_URL}/common/file/uploadByStream`}
    headers={{ authorization: localStorage.getItem('token'),
      'x-sys-encode': '115992066215908888170874',
      'x-sys-terminal': '15986015651108888222042',
    }}
    data={{ fileCode: 'STUDY_ATTACHMENT' }}
    onChange={this.handleUploadExtraFile}
    defaultFileList={articleAttachments}
  >
    <Button>
      <Icon type="upload" /> 上传
    </Button>
    <span style={{ marginLeft: 20 }}>支持扩展名：doc .docx .pdf .jpg，jpeg</span>
  </Upload>
```