swift - 使用 swift 调用 webAPI

Question

我正在使用 GeoNames WebServices 进行 webAPI 调用，以查找给定城市及周边地区的地震信息。如何进行 webAPI 调用。到目前为止，我已经获得了地址的经度和纬度。我很难理解我们如何获取信息。我想快速显示显示每个地球的日期时间和震级

@IBAction func getAddress(_ sender: Any) {
    let addString = location.text
    CLGeocoder().geocodeAddressString(addString!, completionHandler:
    {(placemarks, error) in

        if error != nil {
            print("Geocode failed: \(error!.localizedDescription)")
        }else if placemarks!.count > 0{
            let placemark = placemarks![0]
            let location = placemark.location
            let coords = location!.coordinate

            self.lat = coords.latitude
            self.long = coords.longitude

            print(self.lat, "\n")
            print(self.long, "\n")
        }
        self.south = self.south + self.lat
        self.north = self.north + self.lat
        self.east = self.east + self.long
        self.west = self.west + self.long
        print("\n",self.north, "\n", self.south, "\n", self.east, "\n", self.west)
    })


    let urlAaString = "http://api.geonames.org/earthquakesJSON?north=" + String(self.north) +
    "&south=" + String(self.south) +
    "&east=" + String(self.east) +
    "&west=" + String(self.west) + "&username=demo"

    let url = NSURL(string: urlAaString)!
    let urlSession = URLSession.shared

    let jsonQuery = urlSession.dataTask(with: url as URL, completionHandler: { data, response, error -> Void in
        if (error != nil) {
            print(error!.localizedDescription)
        }
        var err: NSError?


        let jsonResult = (try! JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers)) as? NSDictionary
        if (err != nil) {
            print("JSON Error \(err!.localizedDescription)")
        }

        print(jsonResult)

    })

    jsonQuery.resume()
}

Answer 1

首先启用ATS，因为您使用的是http how I can enable ATS

你可以使用alamofire alamofire

就这么简单

 Alamofire.request("http://api.geonames.org/earthquakesJSON?north=" + String(self.north) +
"&south=" + String(self.south) +
"&east=" + String(self.east) +
"&west=" + String(self.west) + "&username=demo") .responseJSON { response in
      //2.
      if let JSON = response.result.value{
         //3.
         self.jsonArray = JSON as? NSArray
         //4.
         for item in self.jsonArray! as! [NSDictionary]{
            //5.
            //you handle the json
         }
      }
      else
      {
         print("error with the data")
       }
   }