问题
Xcode says that sendSynchronousRequest is now deprecated.
How should I replace it?
let postData:NSData = post.dataUsingEncoding(NSASCIIStringEncoding)!
let postLength:NSString = String( postData.length )
let request:NSMutableURLRequest = NSMutableURLRequest(URL: url)
request.HTTPMethod = "POST"
request.HTTPBody = postData
request.setValue(postLength as String, forHTTPHeaderField: "Content-Length")
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.setValue("application/json", forHTTPHeaderField: "Accept")
var response: NSURLResponse?
var urlData: NSData?
do {
urlData = try NSURLConnection.sendSynchronousRequest(request, returningResponse:&response)
} catch _ as NSError {
urlData = nil
} catch {
fatalError()
}
回答1:
This is a working example, You should use NSURLSession, with Request.
func testPost(sender: UIButton) {
let session = NSURLSession.sharedSession()
let request = NSMutableURLRequest(URL: NSURL(string: "http://localhost:8080/iOSServer/ios/helloworld/swiftCalculator")!)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.HTTPMethod = "POST"
let d = "4"
let data = "x=4&y=\(d)"
request.HTTPBody = data.dataUsingEncoding(NSASCIIStringEncoding)
let task = session.dataTaskWithRequest(request, completionHandler: {(data, response, error) in
if let error = error {
print(error)
}
if let data = data{
print("data =\(data)")
}
if let response = response {
print("url = \(response.URL!)")
print("response = \(response)")
let httpResponse = response as! NSHTTPURLResponse
print("response code = \(httpResponse.statusCode)")
//if you response is json do the following
do{
let resultJSON = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions())
let arrayJSON = resultJSON as! NSArray
for value in arrayJSON{
let dicValue = value as! NSDictionary
for (key, value) in dicValue {
print("key = \(key)")
print("value = \(value)")
}
}
}catch _{
print("Received not-well-formatted JSON")
}
}
})
task.resume()
}
Notice it is not necessary to use the request. you can have a data task with URL, but I added the request because in your code, you have set some headers in the request.
Notice using the completionHandler which will be called when your server responses by http response.
来源：https://stackoverflow.com/questions/32951490/sendsynchronousrequest-is-deprecated-in-ios-9