Question

我正在使用一个不带标头的API来验证登录屏幕中的用户凭据。我想对电子邮件进行编码并传入UTF8，以防有诸如＆＃34; +＆＃34;等字符。在电子邮件或通行证中。这是我的代码：

func logIn() {


    var email = emailTextField.text
    var pass = passwordTextField.text

    var encodedEmail = email.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLHostAllowedCharacterSet())
    var encodedPass = pass.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLHostAllowedCharacterSet())

    var url = "https://www.photoshelter.com/psapi/v3/mem/authenticate?api_key=\(api_key)&email=\(encodedEmail!)&password=\(encodedPass!)&mode=token"


    var baseURL:NSURL? = NSURL(string: url)
    var request: NSMutableURLRequest? = NSMutableURLRequest(URL: baseURL!)
    var session = NSURLSession.sharedSession()
    var task = session.dataTaskWithRequest(request!, completionHandler: { (data, response, error) -> Void in
        dispatch_async(dispatch_get_main_queue(), { () -> Void in


            if response == nil {
                UIAlertView(title: "PhotoShelter", message: "No internet connection", delegate: nil, cancelButtonTitle: "Cancel").show()
            } else {
                var responseObject: AnyObject? = NSJSONSerialization.JSONObjectWithData(data, options: nil, error: nil)
                var status: AnyObject? = responseObject?.objectForKey("status")

                if status as String != "ok" {
                    UIAlertView(title: "PhotoShelter", message: "Invalid Credentials", delegate: nil, cancelButtonTitle: "OK").show()
                } else {

                    var tokenString: AnyObject? = responseObject?.objectForKey("data")
                    var token: AnyObject? = tokenString?.objectForKey("token")
                    println(token!)


                }

            }

        })
    })
    task.resume()
}

它运行正常，我得到的令牌打印没有问题与常规登录。当我添加一个电子邮件与＆＃34; +＆＃34; baseURL不读它。它转换了＆＃34; @＆＃34;登录％40但忽略＆＃34; +＆＃34;。

我还要注意，当我使用时：

var encodedEmail = email.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)
var encodedPass = pass.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)

它也没用。有想法该怎么解决这个吗？

Answer 1

代码正在按照您的要求进行操作。你只是没有问正确的事情。您要求它使用字符串并使用百分比编码转换给定NSCharacterSet中的所有字符不。（顺便说一句，您不是要尝试将用户名和密码编码为UTF-8，而是尝试对它们进行百分比编码或URL编码。）

您传递的字符集包括+，因为在URL中允许使用+。

要获得所需的结果，您需要提供不包含+的字符集。我不知道任何好的，面向URL的预定义集合，所以你必须自己做。这是一种方法：

import Foundation

let x: NSString = "some+other@host.xxx"
let modifiedHostCharacterSet: NSMutableCharacterSet = NSCharacterSet.URLHostAllowedCharacterSet().mutableCopy() as NSMutableCharacterSet
modifiedHostCharacterSet.removeCharactersInString("+")

x.stringByAddingPercentEncodingWithAllowedCharacters(modifiedHostCharacterSet)

该片段旨在在Xcode游乐场或REPL中展示您想要的结果。

Swift：尝试编码用户并传入UTF8

1 个答案: