iOS URLRequest POST Swift 失败 [关闭]答案

【问题标题】：iOS URLRequest POST Failing Swift [closed]iOS URLRequest POST Swift 失败 [关闭]
【发布时间】：2017-10-29 07:00:14
【问题描述】：

我目前正在尝试使用 JSON 正文在 iOS 平台上发出 POST 请求。我的请求在 cURL 中有效，但我无法让它在 iOS 中工作；请求超时。这是我的快速代码：

    class func createNewChannel(name: String, priv: String, channelKey: String, handle: String, password: String, auth: String) {
    let baseURL = "http://10.0.0.220:3000/"

    let dict = ["name": name, "private": priv, "channelKey": channelKey, "handle": handle, "password": password,  "auth": auth] as [String : Any]
    let jsonData = JSON(dict)
    do {
        let post = try jsonData.rawData()
        let postLength = String(post.count)
        let url = URL(string: "\(baseURL)channel/createChannel")!
        var request = URLRequest(url: url)
        request.httpMethod = "POST"
        request.httpBody = post as Data
        request.setValue(postLength, forHTTPHeaderField: "Content-Length")
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.setValue("application/json", forHTTPHeaderField: "Accept")

        let session = URLSession.shared
        let task = session.dataTask(with: request, completionHandler: { (data, response, error) in
            if error == nil {
                do {
                    let json = try JSON(data: data!)
                    print(json)
                }
                catch {
                    print(error.localizedDescription)
                }
            }
            else {
                print(error!)
            }
        })
       task.resume()
    }
    catch {
        print(error.localizedDescription)
    }
}

当我调用此函数时，请求不起作用...我确定我使用的是正确的 url，因为它适用于 GET 端点。我错过了任何标题吗？如果您发现请求有问题，请告诉我。

【问题讨论】：

标签： ios json swift http post

【解决方案1】：

请试试这个。

    let session = URLSession.shared
    let request = URLRequest(url:url)
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")

     request.httpMethod = "POST"
        do {
            let data = try JSONSerialization.data(withJSONObject: yourParam!, options:JSONSerialization.WritingOptions(rawValue: 0))
            let mappedString : String = (String(data: data , encoding: String.Encoding.utf8)!)
            request.httpBody = mappedString.data(using: String.Encoding.utf8, allowLossyConversion: false)
        }
        catch let error as NSError
        {
            print("JSON ERROR 1     " + error.localizedDescription)
            closure(Result.failure(error))
            return
        }
     let task = session.dataTask(with: request, completionHandler: {
        (data, response, error) in
         DispatchQueue.main.async {
             guard data != nil && error == nil else {
                print(error)
                 return
            }
            do {
                let jsonResult : NSDictionary? = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as? NSDictionary
                print("jsonResult\(jsonResult!)")
             } catch let error as NSError {
                 print("JSON ERROR 2     " + error.localizedDescription)
            }
    }
})
                task.resume()

谢谢。

【讨论】：

感谢您的回答...很抱歉，即使使用您的方法，请求仍然超时。还有其他想法吗？

【解决方案2】：

我将自己发布一个答案，因为它可能会在未来帮助某人。我正在使用设备发出请求，并且正在向 localhost 发出请求。我太笨了，手机上的wifi都关了.....

【讨论】：