HarmonyOS鸿蒙Next中开发的应用在移动网络下无法访问http接口，提示Couldn't resolve host name

HarmonyOS鸿蒙Next中开发的应用在移动网络下无法访问http接口，提示Couldn’t resolve host name

先贴出代码及配置， 代码很简单就是点击按钮，请求接口，拿到数据后，显示在 Text 组件中。

import http from '@ohos.net.http';

@Entry
@Component
struct Index {
  @State message: string = 'Hello World'
  @State buttonEnable: boolean = true
  private scroller: Scroller = new Scroller()

  async sendRequest() {
    this.buttonEnable = false
    let httpRequest = http.createHttp();
    httpRequest.on('headersReceive', (header) => {
      console.info('header: ' + JSON.stringify(header));
    });
    console.info("sendRequest")
    httpRequest.request('https://dummyjson.com/products/1', {
      method: http.RequestMethod.GET,
      header: { 'Content-Type': 'application/json' },
      readTimeout: 50000,
      connectTimeout: 50000,
      usingProtocol: undefined,
      usingCache: false

    }, (err, data) => {
      console.info(JSON.stringify(data), JSON.stringify(err))
      this.buttonEnable = true
      if (!err) {
        let result = JSON.parse(data.result as string);
        this.message = result["description"];
        this.scroller.scrollEdge(Edge.Top)
      }
      else {
        this.message = JSON.stringify(err);
      }

    })

  }

  build() {
    Column() {
      Flex({ direction: FlexDirection.Column }) {
        Scroll(this.scroller) {
          Text(this.message).fontSize(22).padding({
            left: 10, right: 10
          })
        }.flexGrow(1)

        Button('Start')
          .width(100)
          .height(50)
          .enabled(this.buttonEnable)
          .onClick(async () => {
            this.sendRequest()
          })
      }
    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Center)
    .alignItems(HorizontalAlign.Center)
  }
}

这段代码在 Wi-Fi 环境下运行非常正常，但是当切到移动数据后，就无法访问了，并且提示 {"code":2300006,"message":"Couldn't resolve host name"}

通过 hdc shell curl 访问接口能正常返回数据。

权限已经配置：

{
  "module": {
    "name": "entry",
    "type": "entry",
    "description": "$string:module_desc",
    "mainElement": "EntryAbility",
    "deviceTypes": [
      "phone",
      "tablet"
    ],
    "deliveryWithInstall": true,
    "installationFree": false,
    "pages": "$profile:main_pages",
    "requestPermissions": [
      {
        "name": "ohos.permission.INTERNET",
      }
    ],
    "abilities": [
      {
        "name": "EntryAbility",
        "srcEntry": "./ets/entryability/EntryAbility.ts",
        "description": "$string:EntryAbility_desc",
        "icon": "$media:icon",
        "label": "$string:EntryAbility_label",
        "startWindowIcon": "$media:icon",
        "startWindowBackground": "$color:start_window_background",
        "exported": true,
        "skills": [
          {
            "entities": [
              "entity.system.home"
            ],
            "actions": [
              "action.system.home"
            ]
          }
        ]
      }
    ]
  }
}

这个是什么问题导致的？ 是因为开发的 app 不能使用移动数据？

网站换了好几个，换成了百度的地址也是一样。