Php Swift 3解析json响应时出现问题
我是Swift新手,但我一直在学习一些示例,比如如何让登录应用程序将用户名和密码字段发送到php文件,并返回json响应 当我打印我的回复时,我得到: [{“userid”:1,“username”:“rodrigo”,“password”:“minhoca”,“groupname”:“couple”}] 但是,当我试图解析json时,我永远无法设置username变量,因为我永远不会进入代码的这一部分,我只会得到“here” 谢谢你的帮助Php Swift 3解析json响应时出现问题,php,json,xcode,swift3,Php,Json,Xcode,Swift3,我是Swift新手,但我一直在学习一些示例,比如如何让登录应用程序将用户名和密码字段发送到php文件,并返回json响应 当我打印我的回复时,我得到: [{“userid”:1,“username”:“rodrigo”,“password”:“minhoca”,“groupname”:“couple”}] 但是,当我试图解析json时,我永远无法设置username变量,因为我永远不会进入代码的这一部分,我只会得到“here” 谢谢你的帮助 func sendLoginInfo(username
func sendLoginInfo(username: String, password: String) -> String{
if let url = URL(string: "myphpurl"){
let request = NSMutableURLRequest(url:url)
request.httpMethod = "POST";// Compose a query string
let postString = "?username=\(myUsername)&password=\(myPassword)"
request.httpBody = postString.data(using: String.Encoding.utf8)
let task = URLSession.shared.dataTask(with:request as URLRequest){
data, response, error in
if error != nil{
print("1\(error)")
}
else{
let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
print("response string = \(responseString!)")
}
do {
if let convertedJsonIntoDict = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary {
// Print out dictionary
print(convertedJsonIntoDict)
// Get value by key
let firstNameValue = convertedJsonIntoDict["username"] as? String
print("here = \(firstNameValue!)")
}
else{
print("here")
}
} catch let error as NSError {
print(error.localizedDescription)
}
}
task.resume()
}
return ""
}
在代码中将NSDictionary更改为NSArray,因为您将获得一个数组并尝试转换为Dictionary:
if let convertedJson = try JSONSerialization.jsonObject(with: data!, options: []) as? NSArray
获取索引0处的对象,它将为您提供命令&然后您可以获取用户名
因此,最终代码将是:
func sendLoginInfo(username: String, password: String) -> String{
if let url = URL(string: "myphpurl"){
let request = NSMutableURLRequest(url:url)
request.httpMethod = "POST";// Compose a query string
let postString = "?username=\(myUsername)&password=\(myPassword)"
request.httpBody = postString.data(using: String.Encoding.utf8)
let task = URLSession.shared.dataTask(with:request as URLRequest){
data, response, error in
if error != nil{
print("1\(error)")
}
else{
let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
print("response string = \(responseString!)")
}
do {
if let convertedJsonIntoDict = try JSONSerialization.jsonObject(with: data!, options: []) as? NSArray {
// Print out dictionary
print(convertedJsonIntoDict)
// Get value by key
let firstNameValue = (convertedJsonIntoDict[0] as! NSDictionary)["username"] as? String
print("here = \(firstNameValue!)")
}
else{
print("here")
}
} catch let error as NSError {
print(error.localizedDescription)
}
}
task.resume()
}
return ""
}
谢谢,但现在它给了我:使用未声明的类型NSDictionarySorry我在代码中输入了一个错误。请重试此代码,我已对其进行了编辑。我把关键字拼错了,这是字典