Question

我正在尝试检查statusCode是否等于2xx，但是我不太确定如何为该类型的错误处理创建此正则表达式代码。这是我的代码，目前有一个从头文件中检索statusCode的变量？

func SignUpWithPassword(email: String, password: String, delegate: CreateUserDelegate) {

    testProvider.request(.SignIn(email, password), completion: { result in
        switch result {
        case let .Success(response):

            let statusCode = response.statusCode

        case let .Failure(error):
            print(error)
            let description = "Error! Please try again!"
            delegate.CreateUser(didError: description)
        }
    })

    delegate.CreateUser(didSucceed: SignUpUser(email: email, password: password))  
}

Answer 1

我相信NSHTTPURLResponse状态代码是一个Int。你应该能够在你的分支逻辑中使用远程表达式：

    switch response.statusCode
    {
    case  200 ... 299 :
        print("Success")
    default:
        print("Failure")
    }

Answer 2

我正在使用这个枚举：

enum HTTPStatusCodeGroup: Int {
    case Info = 100
    case Success = 200
    case Redirect = 300
    case Client = 400
    case Server = 500
    case Unknown = 999

    init(code: Int) {
        switch code {
            case 100...199: self = .Info
            case 200...299: self = .Success
            case 300...399: self = .Redirect
            case 400...499: self = .Client
            case 500...599: self = .Server
            default: self = .Unknown
        }
    }
}

Answer 3

在Swift中，我创建了自己的Regax类。

    // Custom Regex class
    class Regex {
        let internalExpression: NSRegularExpression
        let pattern: String

        init(_ pattern: String) {
            self.pattern = pattern
            do {
                self.internalExpression = try NSRegularExpression(pattern: self.pattern, options: .CaseInsensitive)
            } catch _ {
                self.internalExpression = NSRegularExpression.init();
            }
        }

        func test(input: String) -> Bool {

            let matches = self.internalExpression.matchesInString(input, options: .WithTransparentBounds, range: NSMakeRange(0, input.characters.count)) as Array<NSTextCheckingResult>

            return matches.count > 0
        }
    }

    // Override operator

    infix operator =~ {}

    func =~ (input: NSInteger, pattern: String) -> Int {
        return (Regex(pattern).test(String(input))) ? input : -1;
    }

    // Example add it viewDidLoad method   
    let statusCode = 200
    switch statusCode
    {
    case statusCode =~ "2[0-9][0-9]" :
        print("2[0-9][0-9] Success")
        break
    case statusCode =~ "3[0-9][0-9]" :
        print("3[0-9][0-9] Success")
        break
    case statusCode =~ "4[0-9][0-9]" :
        print("4[0-9][0-9] Success")
        break
    case statusCode =~ "5[0-9][0-9]" :
        print("5[0-9][0-9] Success")
        break
    default:
        print("Failure")
    }

使用statusCode处理错误

3 个答案: