문자 자르기

String url = "abc=def=gh@i"
let urlArr01 = url.components(separatedBy:"=")
            print("testArr :  \(urlArr01[2])")//testArr : gh@i
            let urlArr02 = urlArr01[2].components(separatedBy: "&")
            print("testArr :  \(urlArr02[0])")//testArr : gh
            let filename = urlArr02[0]