在Swift编程中将urlpath添加到NSUrl时获取nil

Question

mapServerRequest =“Midtown，New York，NY，USA”

var mapAddress:NSString=mapServerRequest

     println(mapAddress)
var urlpath=NSString(format: "http://maps.googleapis.com/maps/api/geocode/json?address=%@", mapAddress)
     println(urlpath)
var url = NSURL.URLWithString(urlpath)
    println(url)

Answer 1

您应该对mapAddress进行URL编码：

mapAddress.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLPathAllowedCharacterSet())