HarmonyOS 鸿蒙Next api12的router.getParams怎么样才能接收到数据呢

Index页面跳转TestPage 传入HomeBanner对象

Button()
  .onClick(()=>{
    console.log(this.test)
    router.pushUrl({
      url:‘pages/TestPage’,
      params:{
        homeBanner:this.testBanner
      }
    })
  })

TestPage页面

HomeBanner对象

@Observed
export class HomeBanner{

  private _id: number = 0

  public set id(value: number) {
    this._id = value
  }

  public get id(): number {
    return this._id
  }

  private _imgUrl: string = ‘’

  public set imgUrl(value: string) {
    this._imgUrl = value
  }

  public get imgUrl(): string {
    return this._imgUrl
  }

  private _status: string = ‘’

  public set status(value: string) {
    this._status = value
  }

  public get status(): string {
    return this._status
  }

  private _showIndex: string = ‘’

  public set showIndex(value: string) {
    this._showIndex = value
  }

  public get showIndex(): string {
    return this._showIndex
  }

  private _createTime: string = ‘’

  public set createTime(value: string) {
    this._createTime = value
  }

  public get createTime(): string {
    return this._createTime
  }

  constructor() {
  }

}

export const banner1 = new HomeBanner()
banner1.id = 123
banner1.imgUrl='rqrqrwqrq’
banner1.status='2’
banner1.showIndex='23’
banner1.createTime=‘dqwwqrw’

接收到的显示undefined，怎么解决呢