HarmonyOS Web调用runJavaScript闪退？

Question

声明JSBridge：

/// JS 交互
private jsBridge: ThirdJSBridge = new ThirdJSBridge({
  pageParams: RouterParams.getObject<ThirdPageParam>('params'),
  storage: storage,
  navStack: this.pageInfos,
})

//ThirdJSBridge继承BasicJSBridge
export default class ThirdJSBridge extends BasicJSBridge

//BasicJSBridge的代码为：
export default abstract class BasicJSBridge implements HarmonyCallJS {
  controller: webview.WebviewController;

  constructor() {
    this.controller = new webview.WebviewController();
  }

  /**
   * H5 调用原生方法处理
   */
  get javaScriptProxy(): JavaScriptItem {
    let result: JavaScriptItem = {
      name: "HarmonyOS",
      object: this.getJSCallHarmonyBridge(),
      methodList: this.getBridgeMethodList(),
      controller: this.controller
    }
    return result;
  }
}

Web({
  src: this.url,
  controller: this.jsBridge.controller
})
  .darkMode(WebDarkMode.Off)
  .javaScriptAccess(true)
  .javaScriptProxy(this.jsBridge.javaScriptProxy)
  .zoomAccess(false)
  .multiWindowAccess(false)
  .cacheMode(CacheMode.Online)
  .mixedMode(MixedMode.All)
  .domStorageAccess(true)
  .onControllerAttached(() => {
    this.third.addUserAgent()
  })
  .onShowFileSelector((event) => {
    return this.third.chooseImage(event as FileSelectorEvent)
  })
  .databaseAccess(true)
  .fileAccess(true)
  .imageAccess(true)
  .textZoomRatio(100)
  .password(false)
  .width('100%')
  .flexShrink(1)
}
.width('100%').height('100%')

二、BasicJSBridge的原生调用H5实现方法：

harmonyCallJS(name: string, ...params: Object[]) {
  // 拼接参数，如 1,abc,ddd
  // 并通过 funcname(1,abc,ddd) 的形式调用 H5 的方法
  let args: string
  if (params.length == 0) {
    args = ''
  } else {
    args = `'${params.join("','")}'`
  }
  this.controller.runJavaScript(`${name}(${args})`)
}

情况：确认name和args有值且为正常，但是闪退，查看听云日志，闪退信息是：Error: Init error. The WebviewController must be assosiated with a Web component。请问，controller已经在BasicJSBridge初始化，Web初始化时通过.javaScriptProxy(this.jsBridge.javaScriptProxy) 已经吧Web和Controller绑定，为什么还未出现这个错误呢？

Answer 1

可以在onControllerAttached回调中使用runJavaScript方法，这个回调是Controller成功绑定到Web组件时触发的。

API文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-basic-components-web-V5\#oncontrollerattached10