[英]How to parse Json object in swift 3
嗨,我的問題與json對象有關。 我有此鏈接“ http://ip-api.com/json ”,此鏈接提供了您的IP地址的詳細信息。 我只需要在Swift 3中從此json文件中打印IP地址。我很新,可能是我的問題很基本,但是我需要一些幫助來整理項目。 所以因為我已經做了如下。
let requestURL: NSURL = NSURL(string: "http://ip-api.com/json")!
let urlRequest: NSMutableURLRequest = NSMutableURLRequest(url: requestURL as URL)
let session = URLSession.shared
let task = session.dataTask(with: urlRequest as URLRequest) {
(data, response, error) -> Void in
let httpResponse = response as! HTTPURLResponse
let statusCode = httpResponse.statusCode
if (statusCode == 200) {
print("Everyone is fine, file downloaded successfully.")
do{
let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as! [String:AnyObject]
if let stations = json["city"] as? [[String: AnyObject]] {
for station in stations {
if let name = station["regionName"] as? String {
self.names.append(name)
print("this is query\(name)")
}
else{
print ("no ip address is found")
}
}
}
}
catch {
print("Error with Json: \(error)")
}
}
}
task.resume()
提前謝謝了。
IP地址是JSON頂層密鑰query
的值
let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as! [String:Any]
if let query = json["query"] as? String {
print(query)
}
在Swift 3中,JSON字典的類型為[String:Any]
PS:您不需要此任務的URL請求,直接傳遞URL並使用本機結構URL
(和URLRequest
)
let requestURL = URL(string: "http://ip-api.com/json")!
...
let task = session.dataTask(with: requestURL) {
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