entry/src/main
  ├─ module.json5    		//模塊的配置文件
  ├─ resources        		//資源文件集
  └─ ets
     ├─ XL_Modules      
     │  └─ XL_WeatherServiceManager.ts       //天氣服務(wù)管理者ts模塊
     ├─ pages
     │  └─ Index.ets			//主頁面
     └─ entryability
          └─ EntryAbility.ts     //UIAbility類

//導入http模塊
import http from '@ohos.net.http'

//定義日志標簽
const TAG1 = '------[XL_WeatherServiceManager  inquire] '

//提供云服務(wù)接口的網(wǎng)址片段
const Weather_Url_Part:string = "http://apis.juhe.cn/simpleWeather/query?key="

//開發(fā)者在聚合數(shù)據(jù)的請求Key（需要自行填入）
const key:string = ......

//聲明一個專用于記錄天氣信息的數(shù)據(jù)類型
declare type RealTime_Weather_Result = {

  //實時數(shù)據(jù)
  realtime: any,

  //今日整體數(shù)據(jù)
  today:any,

  //是否成功拉取
  isFinished: boolean

}

/*
  異步函數(shù): 獲取對應(yīng)城市的天氣數(shù)據(jù)
 */
async function Pull_Weather_Data(cityName: string, Tag: string):Promise<RealTime_Weather_Result>{
	
  //預定義輸出
  var output = {
    realtime: null,
    today: null,
    isFinished: false
  }

  //實例化一個http請求任務(wù)類
  let httpRequest = http.createHttp();

	//拼接url，以供訪問服務(wù)器
  let URL = Weather_Url_Part+key+'&city='+cityName

  //調(diào)用異步方法request
  await httpRequest.request(
    URL,
    {
      //設(shè)置請求方法的類型
      method: http.RequestMethod.GET,
    }).then((data) => {

    //提取http響應(yīng)的關(guān)鍵內(nèi)容
    let Weather_Info = JSON.parse(data.result.toString())
	
    //當關(guān)鍵內(nèi)容中所攜帶的錯誤碼為0時，表示成功拉取了天氣數(shù)據(jù)
    if(Weather_Info?.error_code == 0){

      console.info(TAG1+'Succeed! Obtain the weather data')
      
      //在日志欄打印天氣信息
      console.info(TAG1+JSON.stringify(Weather_Info?.result?.realtime))
      console.info(TAG1+JSON.stringify(Weather_Info?.result?.future[0]))
			
      //存取天氣信息
      output.realtime = Weather_Info?.result?.realtime
      output.today = Weather_Info?.result?.future[0]
      
      output.isFinished = true

    }else{
      console.error(Tag+Weather_Info?.reason)
    }

  }).catch(err => console.error(Tag + 'Http request failed, err:  ' + `${err}`))

  //銷毀http任務(wù)類
  httpRequest.destroy()

	//輸出
  return output

}


//默認導出的靜態(tài)型模塊類
class XL_WeatherServiceManager {

  //查詢某城市天氣的方法
  public static async inquire(cityName: string):Promise<RealTime_Weather_Result>{
    return await Pull_Weather_Data(cityName, TAG1)
  }
	
  /*
   *  敬請期待
   */
  
}

export default XL_WeatherServiceManager

import XL_WeatherServiceManager from  'ets/XL_Modules/XL_WeatherServiceManager'

......
let result = await XL_WeatherServiceManager.inquire('北京')
......

//導入自定義的天氣服務(wù)管理模塊
import XL_WeatherServiceManager from  'ets/XL_Modules/XL_WeatherServiceManager'

@Entry
@Component
struct Index {

  @State message: string = 'Hello World'

  @State cityName:string = ''
  @State currentTemperature:string = ''
  @State currentWeather:string = ''
  @State todayTemperature:string = ''
  @State translateY:number = 700

  build() {

 				......
				
        Search({
          placeholder: '請輸入城市名'
        })
        //添加回調(diào)函數(shù)
          .onSubmit((cityName:string)=>{
            this.Search(cityName)
          })
          ......
          
				......
       
    }

	//自定義異步方法
  async Search(cityName:string){
		
    //通過天氣服務(wù)管理者調(diào)用inquire方法，并傳入城市名參數(shù)
    let res = await XL_WeatherServiceManager.inquire(cityName)

    if(res.isFinished){
    
    	//根據(jù)需求讀取信息
      this.currentTemperature = res.realtime.temperature
      this.currentWeather = res.realtime.info
      this.todayTemperature = res.today.temperature
      
      this.cityName = cityName
      this.translateY = 0
      
    }

  }


}