HarmonyOS 应用内打开pdf

import web_webview from '@ohos.web.webview'; 
@Entry 
@Component 
struct Index { 
  webviewController: web_webview.WebviewController = new web_webview.WebviewController(); 
 
 
  build() { 
    Column({space:10}) { 
      //预览在线的pdf文件资源 
      Web({ src:'https://www.xxx-huawei.com.cn/content/dam/mb-xxx-data-cn/xxx/nov/xxx-xxx-G-Class.pdf', controller: this.webviewController}).domStorageAccess(true) 
      //预览本地的pdf文件资源 
      // Web({ src:$rawfile('git.pdf'), controller: this.webviewController}).domStorageAccess(true) 
    }.width('100%').height('100%').justifyContent(FlexAlign.Center).borderWidth(1) 
  } 
}