HarmonyOS H5中的input标签怎么调起系统文件、照片选择

import web_webview from ‘@ohos.web.webview’ 
import picker from ‘@ohos.file.picker’ 
import { BusinessError } from ‘@ohos.base’ 
@Entry 
@Component 
struct Index { 
  controller: web_webview.WebviewController = new web_webview.WebviewController() 
 
  build() { 
    Column() { 
      Web({ src: $rawfile(‘i.html’), controller: this.controller }) 
        .onShowFileSelector((event) => { 
          console.log(‘MyFileUploader onShowFileSelector invoked’) 
          const photoSelectOptions = new picker.PhotoSelectOptions(); 
          photoSelectOptions.MIMEType = picker.PhotoViewMIMETypes.IMAGE_TYPE; // 过滤选择媒体文件类型为IMAGE 
          photoSelectOptions.maxSelectNumber = 5; // 选择媒体文件的最大数目 
          let uris: Array<string> = []; 
          const photoViewPicker = new picker.PhotoViewPicker(); 
          photoViewPicker.select(photoSelectOptions).then((photoSelectResult: picker.PhotoSelectResult) => { 
            uris = photoSelectResult.photoUris; 
            console.info(‘photoViewPicker.select to file succeed and uris are:’ + uris); 
          }).catch((err: BusinessError) => { 
            console.error(Invoke photoViewPicker.select failed, code is ${err.code}, message is ${err.message}); 
          }) 
          return false 
        }) 
    } 
  } 
}