WebAPI call in Swift and fatal error: dictionary literal contains duplicate keys
I have used both swift and Objective-C to call an API with its parameter, I did it successfully in Objective C but I have a problem in Swift to call the API with its parameter.
I used the same keys as " Password " in two parameters . it doesn't work in Swift, but it does work correctly in Objective C.
Please guide me and update my Swift code.
thank
Swift Code
var params: [String: String] = ["FirstName":name, "ContactNumber":contact, "Email":email, "password": password,"password":repassword,"Rd_UserType":type]
var request = NSMutableURLRequest(URL: NSURL(string: "http://local.in/api/AccountApi")!)
var session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
var err: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: nil, error: &err)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
println("Response: \(response)")
Mistake
fatal error: dictionary literal contains duplicate keys
Target C code is working correctly.
Objective-C Code
NSString *post =[[NSString alloc] initWithFormat:@"FirstName=%@&ContactNumber=%@&Email=%@&password=%@&password=%@&Rd_UserType=%@",Name.text,ContactNumber.text,EmailAddress.text,Password.text,ReTypePassword.text,type];
NSLog(@"PostData: %@",post);
NSURL *url=[NSURL URLWithString:@"http://local.in/api/AccountApi"];
NSLog(@"%@",url);
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
//[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
NSError *error = [[NSError alloc] init];
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(@"Response code: %ld", (long)[response statusCode]);
if ([response statusCode] >= 200 && [response statusCode] < 300)
{
NSString *responseData = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(@"Response ==> %@", responseData);
}
+3
source to share
2 answers
Your Swift code is significantly different from Obj-C code. Swift equivalent to
NSString *post =[[NSString alloc] initWithFormat:@"FirstName=%@&ContactNumber=%@&Email=%@&password=%@&password=%@&Rd_UserType=%@",Name.text,ContactNumber.text,EmailAddress.text,Password.text,ReTypePassword.text,type];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postData length]];
will be something like
let post = "FirstName=\(Name.text)&ContactNumber=\(ContactNumber.text)&..."
let postData = post.dataUsingEncoding(NSASCIIStringEncoding, allowLossyConversion: true)!
let postLength = "\(postData.length)"
Instead, you create a JSON dictionary as post data. This fails because a dictionary cannot have two values for the same key. Also JSON may not be what the server expects.
+3
source to share
I solved my problem and I used this code.
Thank.
let post = String(format: "FirstName=%@&ContactNumber=%@&Email=%@&password=%@&password=%@&Rd_UserType=%@",name,contact,email,password,repassword,type)
NSLog("PostData: %@",post);
var url1:NSURL = NSURL(string: "http://local.in/api/AccountApi")!
var postData:NSData = post.dataUsingEncoding(NSASCIIStringEncoding)!
var postLength:NSString = String( postData.length )
var request:NSMutableURLRequest = NSMutableURLRequest(URL: url1)
request.HTTPMethod = "POST"
request.HTTPBody = postData
request.setValue(postLength, forHTTPHeaderField: "Content-Length")
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.setValue("application/json", forHTTPHeaderField: "Accept")
var reponseError: NSError?
var response: NSURLResponse?
var urlData: NSData? = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&reponseError)
if ( urlData != nil ) {
let res = response as NSHTTPURLResponse!;
NSLog("Response code: %ld", res.statusCode);
if (res.statusCode >= 200 && res.statusCode < 300)
{
var responseData:NSString = NSString(data:urlData!, encoding:NSUTF8StringEncoding)!
NSLog("Response ==> %@", responseData);
var error: NSError?
let jsonData:NSDictionary = NSJSONSerialization.JSONObjectWithData(urlData!, options:NSJSONReadingOptions.MutableContainers , error: &error) as NSDictionary
let success:NSInteger = jsonData.valueForKey("error") as NSInteger
//[jsonData[@"success"] integerValue];
NSLog("Success: %ld", success);
}
}
+1
source to share