HarmonyOS 应用内如何打开系统的浏览器并直接加载指定的H5页面？

Button("拉起浏览器").onClick(() => { 
  let context = getContext(this) as common.UIAbilityContext; 
  let want: Want = { 
    action: "ohos.want.action.viewData", 
    bundleName: 'com.huawei.hmos.browser', 
    abilityName: 'MainAbility', 
    uri: "xxxxx", 
  }; 
  console.log("want", want) 
  context.startAbility(want) 
}).margin(10)