HarmonyOS web中如何通过H5传入的acceptType区分拉起选择文件或拍照？

可以尝试以下这种方式：设置Image/* 和 Video/的所有类型， 通过getAcceptType 返回的类型判断是否包含在Image/ 或 Video/* 内判断

参考demo如下：

import web_webview from '@ohos.web.webview';
import picker from '@ohos.file.picker';
@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController()
  acceptType: string = ''

  build() {
    Column() {
      Web({ src: $rawfile('local.html'), controller: this.controller })
        .javaScriptAccess(true)
        .onShowFileSelector((event) => {
          console.log('MyFileUploader onShowFileSelector invoked')
          const regExpImage: Array<string> = ['.tif', '.xbm', '.tiff', '.pjp', '.jfif', '.bmp', '.avif', '.apng', '.ico', '.webp', '.svg', '.gif', '.svgz', '.jpg', '.jpeg', '.pjpeg', '.png']
          const regExpVideo: Array<string> = ['.ogm', '.ogv', '.mpg', '.mp4', '.mpeg', '.m4v', '.webm']
          let types: Array<string> | undefined = event?.fileSelector.getAcceptType()
          const photoSelectOptions = new picker.PhotoSelectOptions();
          // 过滤选择媒体文件类型为
          if (types && types.length > 0) {
            if (regExpImage.some(item => types?.includes(item))) {
              photoSelectOptions.MIMEType = picker.PhotoViewMIMETypes.IMAGE_TYPE;
            }
            if (regExpVideo.some(item =&gt; types?.includes(item))) {
              photoSelectOptions.MIMEType = picker.PhotoViewMIMETypes.VIDEO_TYPE;
            }
          }
          // ...
          return false
        })
    }

  }
}