HamonyOS 设置webview的请求头header

import webview from '@ohos.web.webview' 
@Entry 
@Component 
struct Index { 
  private controller: webview.WebviewController = new webview.WebviewController() 
  private hasCustomHeader: Set<string> = new Set() 
  build() { 
    Column() { 
 
      Button('change').onClick(()=>{ 
        this.controller.loadUrl('https://www.huawei.com') 
      }) 
      Web({ src: 'https://www.huawei.com', controller: this.controller }) 
        .domStorageAccess(true) 
        .onLoadIntercept((event) => { 
          if(event){ 
            const url = event.data.getRequestUrl(); 
            if (this.hasCustomHeader.has(url)) { 
              this.hasCustomHeader.delete(url) 
              return false 
            } 
            this.controller.loadUrl(url, [{ 
              headerKey: 'test', 
              headerValue: '123456' 
            }]) 
            this.hasCustomHeader.add((url)) 
            return true 
          } 
          return false 
        }) 
    } 
    .width('100%') 
    .height('100%') 
  } 
}
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