Convert string to NSURL with character '\\' inside

Question

I coding with Swift 2.0.

I got my URL string like this:

let urlString = "http://example.com/api/getfile/?filepath=C:\\1.txt"

When I convert it into NSURL, it returns nil.

let OrginUrl = NSURL(string: urlString)

Anyone know how to do this?

Answer 1

There are two issues that need to be addressed:

In order to include a \ it must be escaped because it is itself the escape character.

'\' characters are not allowed in URLs so they need to be URL encoded

let urlString = "http://example.com/api/getfile/?filepath=C:\\\\1.txt"  
print("urlString: \(urlString)")  

var escapedString = urlString.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLHostAllowedCharacterSet())  
print("escapedString!: \(escapedString!)")  

let orginUrl = NSURL(string: escapedString!)  
print("orginUrl: \(orginUrl!)")  

urlString:
http://example.com/api/getfile/?filepath=C:\\1.txt

escapedString!:
http%3A%2F%2Fexample.com%2Fapi%2Fgetfile%2F%3Ffilepath=C%3A%5C%5C1.txt

orginUrl:
http%3A%2F%2Fexample.com%2Fapi%2Fgetfile%2F%3Ffilepath=C%3A%5C%5C1.txt