Swift(或 objective-c) 等同于 curl 请求

Question

我想将以下 curl 请求修改为 swift（或 objective-c）。

curl -X POST  -d "login_id=mylogin_id"  
-d "api_key=myapi_key"  
https://~~~~~/v2/authenticate/api

以下是我写的。

func authentication(){
    var loginID = "mylogin_id"
    var apiKey = "myapi_key"
    var post:NSString = "login_id=(loginID)&api_key=(apiKey)"
    NSLog("PostData: %@",post);
    var url:NSURL = NSURL(string:"https://~~~~~/v2/authenticate/api")!
    var postData:NSData = post.dataUsingEncoding(NSASCIIStringEncoding)!
    var postLength:NSString = String( postData.length )
    var request:NSMutableURLRequest = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
    request.HTTPBody = postData
    request.setValue(postLength, forHTTPHeaderField: "Content-Length")
    request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
    request.setValue("application/json", forHTTPHeaderField: "Accept")

    var reponseError: NSError?
    var response: NSURLResponse?
    var urlData: NSData? = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&reponseError)
}

如果登录成功，将返回令牌，但是，我无法获得它。

{"auth_token": "ea6d13c7bc50feb46cf978d137bc01a2"}

我提到了这个链接。谢谢你的好意。

/////

/※1月4日更新下午2：30

我已经重写了"var request~~"中的代码如下，然后得到"错误"，因此看起来这段代码将urlData返回为nil。

如果你能找到解决问题的方法，请帮助我。

var request:NSMutableURLRequest = NSMutableURLRequest(URL: url)
    request.HTTPMethod = "POST"
    request.HTTPBody = postData
    //request.setValue(postLength, forHTTPHeaderField: "Content-Length")
    request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
    //request.setValue("application/json", forHTTPHeaderField: "Accept")
    var reponseError: NSError?
    var response: NSURLResponse?
    var urlData: NSData? = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&reponseError)
    if (urlData != nil){
        var responseData:NSString  = NSString(data:urlData!, encoding:NSUTF8StringEncoding)!
        let res = response as NSHTTPURLResponse!;
        NSLog("Response code: %ld", res.statusCode);
        if (res.statusCode >= 200 && res.statusCode < 300){
            var responseData:NSString  = NSString(data:urlData!, encoding:NSUTF8StringEncoding)!
            NSLog("Response ==> %@", responseData);
        }
    }else{
        NSLog("Error");
    }

Answer 1

我代表 NSURLConnection 使用 NSURLSession 获得了身份验证令牌，但我仍然不确定为什么可以使用 NSURLSession 而不能使用 NSURLConnection。如果你有想法，请告诉我。谢谢你的好意。

func authentication2(){
    let request = NSMutableURLRequest(URL: NSURL(string: "https://~~~/v2/authenticate/api")!)
    request.HTTPMethod = "POST"
    var loginID = "mylogin_id"
    var apiKey = "myapi_key"
    var postString:NSString = "login_id=(loginID)&api_key=(apiKey)"
    request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
    let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
        data, response, error in
        if error != nil {
            println("error=(error)")
            return
        }
        println("response = (response)")
        let responseString = NSString(data: data, encoding: NSUTF8StringEncoding)
        println("responseString = (responseString)")
    }
    task.resume()
}