问题描述

我写了一个page，代码如下，在点击按钮后链接websocket服务。但不成功，给出的Log是：
app Log: The webSocket.createWebSocket interface in the Previewer is a mocked implementation
and may behave differently than on a real device.
app Log: The WebSocket.connect interface in the Previewer is a mocked implementation and may
behave differently than on a real device.
app Log: Connection failed. Err:{"code":"","data":"","name":"","message":"","stack":""}

//////code/////////////
import webSocket from '@ohos.net.webSocket';
import { BusinessError } from '@ohos.base';

@entry
@citizenl
struct Second {
@后蜗牛 message: string = 'Hi Linke09';

build() {
Row() {
Column() {
Text(this.message)
.fontColor('red')
.fontSize(50)
.fontWeight(FontWeight.Bold)
Button(){
Text('Back')
.fontSize(30)
.fontWeight(FontWeight.Bold)
}
.type(ButtonType.Normal)
.margin({top:20})
.backgroundColor('#0DBFBB')
.width('40%')
.height('5%')
.onClick(()=> {
console.info("Succeeded in clicking the 'Next' button.");
let defaultIpAddress = "ws://localhost:2333";
let ws = webSocket.createWebSocket();

      ws.connect(defaultIpAddress, (err: BusinessError, value: boolean) => {
        if (!err) {
          console.log("Connected successfully");
        } else {
          console.log("Connection failed. Err:" + JSON.stringify(err));
        }
      });
    })
  }
  .width('100%')
}
.height('100%')

}
}