如何为网页设置单个Cookie的值。

import web_webview from '@ohos.web.webview';
import business_error from '@ohos.base';
@Entry
@Component
struct Index {
  webviewController: web_webview.WebviewController = new web_webview.WebviewController();
  build() {
    Column() {
      Web({ src: "https://www.example.com", controller: this.webviewController })
      Button('配置Cookie')
        .onClick(() => {
          try {
            //configCookieSync设置cookie
            web_webview.WebCookieManager.configCookieSync('https://www.example.com', 'value=test');
          } catch (error) {
            let e: business_error.BusinessError = error as business_error.BusinessError;
            console.error(`ErrorCode: ${e.code},  Message: ${e.message}`);
          }
        })
    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Center)
  }
}