swift - NSURLSession 参数无法识别

Question

我正在尝试使用 NSURLSession 发出 HTTPRequest。当我设置完整的 url 时，请求返回正确的数据，但是当使用参数时 (NSJSONSerialization.dataWithJSONObject -> HTTPBody 我收到此错误

error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost."

我在这里做错了什么吗？

 let json = ["api_key": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"]
    do {

        let jsonData = try NSJSONSerialization.dataWithJSONObject(json, options: .PrettyPrinted)

        let url = NSURL(string: "https://api.themoviedb.org/3/discover/movie")!
        let request = NSMutableURLRequest(URL: url)
        request.HTTPBody = jsonData
        request.HTTPMethod = "GET"
        request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")


        let task = NSURLSession.sharedSession().dataTaskWithRequest(request){ data, response, error in
            if error != nil{
                print("Error -> \(error)")
                return
            }
            do {
                let result = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as? [String:AnyObject]

                print("Result -> \(result)")

            } catch {
                print("Error -> \(error)")
            }
        }

        task.resume()


    } catch {
        print(error)
    }
}

这不是重复的!在问这个问题之前，我查看了建议的答案(没有一个有效)

Answer 1

在您的情况下，可以通过将 request.HTTPMethod = "GET" 更改为 request.HTTPMethod = "POST" 来解决该问题

您不应该在 get 请求中发送 HTTP Body，要通过正文发送数据，您应该将 HTTPMethod 更改为 post

注意:请检查此api方法是否支持POST请求，如果不支持post，则不能将其与http body/post一起使用，根据文档我只找到“get”对 discover/movie 的请求可以是这样的:

let url = NSURL(string: "http://api.themoviedb.org/3/discover/movie?api_key=YOUR_API_KEY")!
let request = NSMutableURLRequest(URL: url)
request.addValue("application/json", forHTTPHeaderField: "Accept")

let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request) { data, response, error in
    if let response = response, data = data {
        print(response)
        print(String(data: data, encoding: NSUTF8StringEncoding))
    } else {
        print(error)
    }
}

task.resume()

引用:您可以通过此网址查看更多信息:http://docs.themoviedb.apiary.io/#reference/discover/discovermovie/get