HarmonyOS web加载file://协议的图片文件，提示跨域问题

// 复制到沙箱路径工具方法 
function copyFileToApp(src: string, dst: string) { 
  try { 
    let fileArray = src.split("/"); 
    let fileName = fileArray[fileArray.length-1]; 
    let file = fs.openSync(src, fs.OpenMode.READ_ONLY); 
    let dstPath = dst + '/' + fileName; 
    let file2 = fs.openSync(dstPath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE); //先创建有读写权限的文件，再把不可读写的文件复制过来 
    fs.copyFileSync(file.fd, file2.fd); 
    return dstPath; 
  } catch (e) { 
    console.error(" copy error") 
    return ''; 
  } 
} 
build() { 
  Row() { 
    Column() { 
      Button('photo picker') 
        .onClick(() => { 
          let PhotoSelectOptions = new picker.PhotoSelectOptions(); 
          PhotoSelectOptions.MIMEType = picker.PhotoViewMIMETypes.IMAGE_TYPE; 
          PhotoSelectOptions.maxSelectNumber = 1; 
          let photoPicker = new picker.PhotoViewPicker(); 
          photoPicker.select(PhotoSelectOptions).then(async (PhotoSelectResult) => { 
            this.photoUris = PhotoSelectResult.photoUris; 
            const dst = 'file://' + this.context.filesDir; 
            this.sandboxPath = copyFileToApp(this.photoUris[0], dst) 
            let jsStr = `__record_callback('${'https://xxx.url.for.image/' + this.sandboxPath}');`; 
            this.controller.runJavaScript(jsStr) 
          }).catch((err: BusinessError) => { 
          }); 
        }) 
      Web({ src: 'https://xxx.dra.xxx.link', controller: this.controller }) 
        .imageAccess(true).fileAccess(true).onInterceptRequest((event) => { 
        if (!event) { 
          return; 
        } 
        let fileUri = event.request.getRequestUrl() 
        if (fileUri.startsWith("https://xxx.url.for.image/")) { 
          fileUri = fileUri.replace('https://xxx.url.for.image/', ''); 
          let file: fs.File; 
          file = fs.openSync(fileUri, fs.OpenMode.READ_WRITE); 
          let response = new WebResourceResponse(); 
          response.setResponseData(file.fd); 
          response.setResponseEncoding('utf-8'); 
          response.setResponseMimeType("image/jpeg"); 
          response.setResponseCode(200); 
          response.setReasonMessage('OK'); 
          response.setResponseIsReady(true); 
          return response; 
        } 
        return null; 
      }) 
    } 
    .width('100%') 
  } 
  .height('100%') 
}