Ios 如何在 Swift 上的 sendSynchronousRequest 中判断 Response.statusCode

发布于10月04日

如何判断回复.Swift中SendSynchronousRequest中的状态代码

let urlPath: String = "URL_IS_HERE"
var url: NSURL = NSURL(string: urlPath)
var request: NSURLRequest = NSURLRequest(URL: url)
var response: AutoreleasingUnsafeMutablePointer<NSURLResponse?> = nil

var error: NSErrorPointer? = nil
var data = NSURLConnection.sendSynchronousRequest(request, returningResponse: response, error: nil) as NSData?

在objective-c 之前和objective-c 中，我们使用以下代码判断response.statusCode: (长)响应.statusCode 但是在SWIFT中，我不知道如何判断响应状态代码

推荐答案

您将引用传递给response，这样它就会被填充，然后判断结果并将其转换为HTTPResponse，因为只有http响应声明status code属性.

let urlPath: String = "http://www.google.de"
var url: NSURL = NSURL(string: urlPath)
var request: NSURLRequest = NSURLRequest(URL: url)
var response: NSURLResponse?

var data = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: nil) as NSData?

if let httpResponse = response as? NSHTTPURLResponse {
    println("error \(httpResponse.statusCode)")
}

note: in objC you would also use the same approach but if you use squared brackets, the compiler doesn't enforce the cast. Swift (being type safe) does enforce the cast always个