swift 3中的POST方法对JSONSerialization.jsonObject的响应为nil [英] Response of JSONSerialization.jsonObject is nil with the method POST in swift 3
本文介绍了swift 3中的POST方法对JSONSerialization.jsonObject的响应为nil的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
这是我要执行的操作的示例,但行if let json = try JSONSerialization.jsonObject(with: data) as? [String: String]
是false
,因为JSONSerialization.jsonObject
的返回是nil
this is an example for something i want to do but the line if let json = try JSONSerialization.jsonObject(with: data) as? [String: String]
is false
because the return of JSONSerialization.jsonObject
is nil
func parser(lbl: UILabel){
let postString = "xxx=xxx&xxxx=xxxx==&xxxxx=xxxxx&xxxxxx=xxxxxx&xx=xx"
let url = URL(string: "http://xxxxxxxxxx.com/xxxxxx/xxxxx/xxxxxx.php")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = postString.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data else {
lbl.text = "error";
return
}
do {
if let json = try JSONSerialization.jsonObject(with: data) as? [String: String] {
DispatchQueue.main.async {
let error = Int(json["success"]!)
let message = json["message"]
lbl.text = message
}
}
} catch let parseError {
print("error to parse: \(parseError)")
let responseString = String(data: data, encoding: .utf8)
print("response`enter code here` : \(responseString!)")
}
}
task.resume()
}
推荐答案
尝试一下:
var resultFromServer: Any?
resultFromServer = try JSONSerialization.jsonObject(with: data!, options: [])
这应该为您提供resultFromServer类型的Any?
,只需根据获得的响应的基础(数组或字典)进行检查和类型转换即可.
This should give you resultFromServer as type of Any?
, simply check and typecast depending on the basis of the response you are getting, an array or a dictionary.
赞
if let respdict = resultFromServer as? [String : Any] {
//respone in dictionary format
}
else if let respArr = resultFromServer as? [Any]{
//response is array type
}
else if let stringRespt = String(data: data, encoding: .utf8){
//resp is string
}
只需根据您的JSON进行更改
Just make changes as per your JSON
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