HarmonyOS 鸿蒙Next 父组件传给webview子组件数值，获取不到

问题：由其他界面跳转到本界面，获取route传过来值，在赋值给子组件，但是子组件获取不到。场景 使用webView预览隐私或服务说明，做区分url的

页面：

@Entry
@Component
struct PrivacyPage {
private info: string=’’;
@State   url: string =‘https://developer.huawei.com/consumer/cn/forum/communityHome’

onPageShow() {
const params = router.getParams() as Record<string, string>; // 获取传递过来的参数对象
if (params.privacyType) {
this.info = params.privacyType;
  <span class="hljs-keyword"><span class="hljs-keyword">if</span></span> (<span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.info === <span class="hljs-string"><span class="hljs-string">'service_agreement'</span></span>) { <span class="hljs-comment"><span class="hljs-comment">// 使用严格等于比较</span></span>
    <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.url = <span class="hljs-string"><span class="hljs-string">'https://baidu.com'</span></span>;
  } <span class="hljs-keyword"><span class="hljs-keyword">else</span></span> {
    <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.url = <span class="hljs-string"><span class="hljs-string">'https://developer.huawei.com/consumer/cn/forum/communityHome'</span></span>;
  }
}
}
build() {
Column() {
//子组件
ShowWebView({url:this.url})
}
.width(‘100%’)
.height(‘100%’)
}
}
子组件：@Prop 接受父组件接受不到改变的值
@Component
export struct ShowWebView {
@State remoteProgressValue: number = 0;
@State isHiddenRemoteProgress: Boolean = true;
@Prop url: string;
controller: webview.WebviewController = new webview.WebviewController();
build() {
Column() {
Stack() {
if (this.isHiddenRemoteProgress) {
Progress({ value: START_VALUE, total: TOTAL_VALUE, type: ProgressType.Linear })
.width(CommonUISize.FULL_WIDTH)
.height(3)
.value(this.remoteProgressValue)
.color(Color.Green)
}
}
  Web({
    src: <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.url,
    controller: <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.controller
  })
    .onProgressChange((event) =&gt; {
      <span class="hljs-keyword"><span class="hljs-keyword">if</span></span> (event) {
        <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.remoteProgressValue = event.newProgress;
        <span class="hljs-keyword"><span class="hljs-keyword">if</span></span> (<span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.remoteProgressValue &gt;= TOTAL_VALUE) {
          <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.isHiddenRemoteProgress = <span class="hljs-literal"><span class="hljs-literal">false</span></span>;
        }
      }
    })
    .domStorageAccess(<span class="hljs-literal"><span class="hljs-literal">true</span></span>)</code><button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button></pre></div></div>