Post data in Objective C using Json
Solution 1
I think you would be better off using the NSJSONSerialization class like this:
NSDictionary *tmp = [[NSDictionary alloc] initWithObjectsAndKeys:
email, @"Email",
fname, @"FirstName",
nil];
NSError *error;
NSData *postdata = [NSJSONSerialization dataWithJSONObject:tmp options:0 error:&error];
[request setHTTPBody:postData];
Using a dictionary and then converting it to JSON it's easier than creating it like a string.
Good luck!
[SWIFT 3.0] (update)
let tmp = ["email": email,
"FirstName": fname]
let postData = try? JSONSerialization.data(withJSONObject: tmp, options: .prettyPrinted)
request.httpBody = postData
Solution 2
I have run your code, and server side receive all message.
POST / HTTP/1.1
Host: linux-test
User-Agent: demoTest/1.0 CFNetwork/548.1.4 Darwin/11.3.0
Content-Length: 44
Accept: application/json
Content-Type: application/json
Accept-Language: en
Accept-Encoding: gzip, deflate
Connection: keep-alive
{"Email":"[email protected]","FirstName":"test"}
And follow code, if jsonRequest
has Non-ASCII characters, the [jsonRequest length]
will be wrong.
NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]];
You can use strlen
instead.
NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:strlen([jsonRequest UTF8String])];
or
[jsonRequest dataUsingEncoding:NSUTF8StringEncoding];
Praneeta
Updated on December 13, 2020Comments
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Praneeta over 3 years
I am trying to post data to a PHP web service.
I am familiar doing this in html using query $.post but I am very much stumped trying this in objective C. I tried several blogs & questions found on stackoverflow.I finally came up with the following code:
NSString *jsonRequest = [NSString stringWithFormat:@"{\"Email\":\"%@\",\"FirstName\":\"%@\"}",user,fname]; NSLog(@"Request: %@", jsonRequest); NSURL *url = [NSURL URLWithString:@"http:myurl..."]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url]; NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]]; [request setHTTPMethod:@"POST"]; [request setValue:@"application/json" forHTTPHeaderField:@"Accept"]; [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; [request setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"]; [request setHTTPBody: requestData]; NSURLConnection *connection = [NSURLConnection connectionWithRequest:request delegate:self];
I also tried:
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];My web service creates a new user on post and returns the userID. Both successfully make the web service call(a new userID is created), however they do not post the data, i.e. a blank user is created every time.
Please tell me if I am missing anything.Thanks.
My other attempts:
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL: [NSURL URLWithString:@"myUrl.. "]]; [request setHTTPMethod:@"POST"]; NSString *postString = @"[email protected]&FirstName=Test"; [request setValue:[NSString stringWithFormat:@"%d", [postString length]] forHTTPHeaderField:@"Content-length"]; [request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]]; [[NSURLConnection alloc] initWithRequest:request delegate:self];
I finally solved the issue: FInally, figured out what was wrong. I was using http://mypath?params=123 as my url. I did not gig the complete url(never needed it in other languages). But here I needed to give htt://mypath/index.php?params=123