swift - 如何删除打印 URL 时不断出现的“&”？

Question

如何删除打印 URL 时不断出现的“&”？为什么还会出现？

var url = URLComponents()
    url.scheme = "http"
    url.host = "api.openweathermap.org"

    url.queryItems = [
        URLQueryItem(name: "/data", value: ""),
        URLQueryItem(name: "/2.5", value: ""),

        URLQueryItem(name: "/weather?", value: ""),
        URLQueryItem(name: "lat", value: "35"),
        URLQueryItem(name: "lon", value: "-139")
    ]

    print(url.string!)

// http://api.openweathermap.org?/data=&/2.5=&/weather?=&lat=35&lon=-139

新问题：

如何将以下坐标转换为字符串？

(currentLocation.coordinate.latitude)

Answer 1

/data/2.5/weather 

是路径，而不是查询项。尝试：

var url = URLComponents()
url.scheme = "http"
url.host = "api.openweathermap.org"
url.path = "/data/2.5/weather"

url.queryItems = [

    URLQueryItem(name: "lat", value: "35"),
    URLQueryItem(name: "lon", value: "-139")
]