网络请求数据后的处理

// xxx.ets 
import http from '@ohos.net.http'; 
 
@Entry 
@Component 
struct WebComponent { 
  private account:string="123344"; 
  private password:string="123344"; 
  build() { 
    Column() { 
      Text("测试网络请求11111").onClick(()=>{ 
        let httpRequest = http.createHttp(); 
        let requestUrl = "https://example/uniapp/"; 
        httpRequest.request(requestUrl,{ 
          method: http.RequestMethod.POST, 
          header: { 
            'Content-Type': 'application/json' 
          }, 
          extraData: { 
            action: "login", 
            username: this.account, 
            password: this.password, 
          }, 
        }, (err, data) => { 
          if (!err) { 
            console.log(JSON.stringify(data.result)); 
            //第一种方法打印code 
            let code:number=JSON.parse(data.result+"").code; 
            console.log(code+""); 
            interface dataResult { 
              code : number 
              msg : string 
              data: string[] ; 
            } 
            //第二种方法打印出msg 
            let dataObj:dataResult = JSON.parse(data.result as string); 
            console.info(dataObj.msg); 
            httpRequest.destroy(); 
          } else { 
            console.info('error:' + JSON.stringify(err)); 
            httpRequest.off('headersReceive'); 
            httpRequest.destroy(); 
          } 
        } 
        ); 
      }).backgroundColor(Color.Red).width(100).height(200) 
    } 
  } 
}