registerJavaScriptProxy为什么一定要refresh接口才能生效？如果挂载两个name的话如何实现？

import web_webview from '@ohos.web.webview'; 
import business_error from '@ohos.base'; 
 
class testObj { 
  constructor() { 
  } 
  test(): string { 
    console.log('ArkUI Web Component'); 
    return 'ArkUI Web Component'; 
  } 
  toString(): void { 
    console.log('Web Component toString'); 
  } 
} 
class webObj { 
  constructor() { 
  } 
  webTest(): string { 
    console.log('Web test'); 
    return 'Web test'; 
  } 
  webString(): void { 
    console.log('Web test toString'); 
  } 
} 
@Entry 
@Component 
struct Index { 
  controller: web_webview.WebviewController = new web_webview.WebviewController(); 
  @State testObjtest: testObj = new testObj(); 
  @State webTestObj: webObj = new webObj(); 
  build() { 
    Column() { 
      Button('refresh') 
      .onClick(() => { 
        try { 
          this.controller.refresh(); 
        } catch (error) { 
          let e: business_error.BusinessError = error as business_error.BusinessError; 
          console.error(`ErrorCode: ${e.code}, Message: ${e.message}`); 
        } 
      }) 
      Button('Register JavaScript To Window') 
      .onClick(() => { 
        try { 
          this.controller.registerJavaScriptProxy(this.testObjtest, 'objName', ['test', 'toString']); 
          this.controller.registerJavaScriptProxy(this.webTestObj, 'objTestName', ['webTest', 'webString']); 
        } catch (error) { 
          let e: business_error.BusinessError = error as business_error.BusinessError; 
          console.error(`ErrorCode: ${e.code}, Message: ${e.message}`); 
        } 
      }) 
      Web({ src: $rawfile('index.html'), controller: this.controller }) 
        .javaScriptAccess(true) 
    } 
  } 
}