將字符串轉換爲URL返回零

Question

var url:String = "http://112.199.178.73:4000/contact" + "?" + ["accessToken": getAppDelegate().applicationData?.accessToken].queryStringWithEncoding(); 

var socketUrl = URL(string: url); 

Answer 1

不要像這樣手動構建URL和URL字符串。

var components = URLComponents() 
components.scheme = "http" 
components.host = "112.199.178.73" 
components.port = 4000 
components.path = "/contact" 

// I'm assuming accessToken is a string here 
if let accessToken = getAppDelegate().applicationData?.accessToken { 
    components.queryItems = [ 
     URLQueryItem(name: "accessToken", value: accessToken) 
    ] 
} 

guard let url = components.url else { 
    fatalError("Failed to create URL") 
} 

如果你能後的字符串var url:String = "http://112.199.178.73:4000/contact" + "?" + ["accessToken": getAppDelegate().applicationData?.accessToken].queryStringWithEncoding(); 產生，我們可以告訴你到底發生了什麼錯，但我敢打賭，但是["accessToken": getAppDelegate().applicationData?.accessToken].queryStringWithEncoding();是越來越追加到該字符串是要給你一個不正確的URL字符串。