Web中加载网页后获取当前页面和url

import web_webview from '@ohos.web.webview' 
import business_error from '@ohos.base' 
  
@Entry 
@Component 
struct WebComponent { 
  controller: web_webview.WebviewController = new web_webview.WebviewController(); 
  
  build() { 
    Column() { 
      Button('storeWebArchive') 
        .onClick(() => { 
          try { 
            this.controller.storeWebArchive("/data/storage/el2/base/", true, (error, filename) => { 
              if (error) { 
                console.info(`save web archive error: ` + JSON.stringify(error)) 
                return; 
              } 
              if (filename != null) { 
                console.info(`save web archive success: ${filename}`) 
              } 
            }); 
          } catch (error) { 
            let e:business_error.BusinessError = error as business_error.BusinessError; 
            console.error(`ErrorCode: ${e.code},  Message: ${e.message}`); 
          } 
        }) 
      Button('getUrl') 
        .onClick(() => { 
          try { 
            let url = this.controller.getUrl(); 
            console.log("url: " + url); 
          } catch (error) { 
            let e:business_error.BusinessError = error as business_error.BusinessError; 
            console.error(`ErrorCode: ${e.code},  Message: ${e.message}`); 
          } 
        }) 
      Web({ src: 'https://www.baidu.com', controller: this.controller }) 
    } 
  } 
}