快速预览通过网络数据渲染页面

import http from '@ohos.net.http'; 
import { BusinessError } from '@ohos.base'; 
 
@Entry 
@Component 
struct Index { 
 
  build() { 
    Row() { 
      Column() { 
        Button("HTTP") 
          .fontSize(50) 
          .fontWeight(FontWeight.Bold) 
          .onClick(() => { 
            // 每一个httpRequest对应一个HTTP请求任务，不可复用 
            let httpRequest = http.createHttp(); 
            httpRequest.request("https://www.huawei.com", { method: http.RequestMethod.GET, connectTimeout: 1000 }).then(res => { 
              console.info('=== result:' + JSON.stringify(res)); 
            }).catch((error: BusinessError) => { 
              console.error("=== " + JSON.stringify(error)); 
            }) 
          }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}