快速發布數據時出錯

Question

我正在使用像這樣的post方法發送數據

let login = ["user_name":usernameTextField.text,"password":passwordTextField.text]
    //["user":"ords_user@gmail.com", "pass":"ords_password"]

let url = NSURL(string: "http://localhost:8300")!

let session = NSURLSession.sharedSession()

let request = NSMutableURLRequest(URL: url)

do {
    // JSON all the things
    let auth = try NSJSONSerialization.dataWithJSONObject(login, options: .PrettyPrinted)

    // Set the request content type to JSON
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")

    // The magic...set the HTTP request method to POST
    request.HTTPMethod = "POST"

    // Add the JSON serialized login data to the body
    request.HTTPBody = auth

    // Create the task that will send our login request (asynchronously)
    let task = session.dataTaskWithRequest(request, completionHandler: { (data, response, error) -> Void in
        // Do something with the HTTP response
        print("Got response \(response) with error \(error)")
        print("Done.")
    })

    // Start the task on a background thread
    task.resume()

} catch {
    // Handle your errors folks...
    print("Error")
}

但是我收到了這樣的錯誤消息

參數類型'[String：String？]'與預期類型'AnyObject'不符

如果我給出直接字符串，則表示接受。 如果我要動態地使用TextFields，它就不會出現。 我不知道我犯了什么錯誤。

任何人都可以幫助解決這個問題嗎？

提前致謝。

Answer 1

我認為您的問題是您正在將可選字符串放入字典中。

嘗試這樣做：

guard 
    let username = usernameTextField.text, 
    let password = passwordTextField.text else { 
        return print("Need username & password") 
}
let login = ["user_name": username,"password": password]
...

Answer 2

UITextField的text屬性返回一個可選值，因此編譯器無法將其轉換為AnyObject。 您必須先拆開可選組件。

Answer 3

嘗試這個

let login = ["user_name":usernameTextField.text,"password":passwordTextField.text] as Dictionary<String, AnyObject>