我刚刚升级到Swift 2.0，但我的sendRequest功能似乎有问题。
func sendRequest(request: NSURLRequest, completion:(NSData!, NSError!) -> Void) -> () {
// Create a NSURLSession task
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request) { (data: NSData!, response: NSURLResponse!, error: NSError!) in
if error != nil {
dispatch_async(dispatch_get_main_queue(), { () -> Void in
completion(data, error)
})
return
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
if let httpResponse = response as? NSHTTPURLResponse {
if httpResponse.statusCode == 200 {
completion(data, nil)
} else {
var jsonerror:NSError?
if let errorDict = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments, error:&jsonerror) as? NSDictionary {
let responseError : NSError = NSError(domain: "HTTPHelperError", code: httpResponse.statusCode, userInfo: errorDict as? [NSObject : AnyObject])
completion(data, responseError)
}
}
}
})
}
// start the task
task.resume()
}
我对Swift 2.0进行了更改，并成功进行了编译而没有错误。但是数据一直在返回Error Code 400 (bad request)。
这是当前代码（编译，但返回错误400）
func sendRequest(request: NSURLRequest, completion:(NSData!, NSError!) -> Void) -> () {
// Create a NSURLSession task
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request) { (data, response, error) in
if error != nil {
dispatch_async(dispatch_get_main_queue(), { () -> Void in
completion(data, error)
})
return
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
if let httpResponse = response as? NSHTTPURLResponse {
if httpResponse.statusCode == 200 {
completion(data, nil)
} else {
do {
if let errorDict = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.AllowFragments) as? NSDictionary
{
let responseError : NSError = NSError(domain: "HTTPHelperError", code: httpResponse.statusCode, userInfo: errorDict as? [NSObject : AnyObject])
completion(data, responseError)
}
} catch let error as NSError {
print("error serializing JSON: \(error)")
completion(data, error)
}
}
}
})
}
// start the task
task.resume()
}
资料来源：我正在学习本教程，但看起来它是为Swift 1.2编写的
buildRequest功能func buildRequest(path: String!, method: String, authType: HTTPRequestAuthType,
requestContentType: HTTPRequestContentType = HTTPRequestContentType.HTTPJsonContent, requestBoundary:String = "") -> NSMutableURLRequest {
// 1. Create the request URL from path
let requestURL = NSURL(string: "\(HTTPHelper.BASE_URL)/\(path)")
let request = NSMutableURLRequest(URL: requestURL!)
// Set HTTP request method and Content-Type
request.HTTPMethod = method
// 2. Set the correct Content-Type for the HTTP Request. This will be multipart/form-data for photo upload request and application/json for other requests in this app
switch requestContentType {
case .HTTPJsonContent:
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
case .HTTPMultipartContent:
let contentType = "multipart/form-data; boundary=\(requestBoundary)"
request.addValue(contentType, forHTTPHeaderField: "Content-Type")
}
// 3. Set the correct Authorization header.
switch authType {
case .HTTPBasicAuth:
// Set BASIC authentication header
let basicAuthString = "\(HTTPHelper.API_AUTH_NAME):\(HTTPHelper.API_AUTH_PASSWORD)"
let utf8str = basicAuthString.dataUsingEncoding(NSUTF8StringEncoding)
let base64EncodedString = utf8str?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
request.addValue("Basic \(base64EncodedString!)", forHTTPHeaderField: "Authorization")
case .HTTPTokenAuth:
// Retrieve Auth_Token from Keychain
if let userToken = KeychainAccess.passwordForAccount("Auth_Token", service: "KeyChainService") as String? {
// Set Authorization header
request.addValue("Token token=\(userToken)", forHTTPHeaderField: "Authorization")
}
}
return request
}
试试这个：-
func sendRequest(request: NSURLRequest, completion:(NSData!, NSError!) -> Void) -> () {
let request = request
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
let error = error
let response = response
let data = data
if data != nil && error == nil {
let res = response as! NSHTTPURLResponse!
if (res.statusCode >= 200 && res.statusCode < 300) {
do {
let jsonData:AnyObject? = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as? NSDictionary
print("Success")
} catch let error as NSError {
print("Failed To load")
} catch {
// Something else happened.
// Insert your domain, code, etc. when constructing the error.
}
} else {
print("Connection Error")
}
} else {
print("Error")
}
})
task.resume()
}
并在您的buildRequest中，使用set：-
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
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