Issue with IOS Http POST - ios

Question

Request data
NSDictionary *tmp = #{#"name":#"Kousik",#"age":#"24",#"location":#"bangalore"};
NSString *postdata = [NSString stringWithFormat:#"request = %#",tmp];
//now postdata is
//request = {
"age" = "24";
"location" = "bangalore";
"name" = "Kousik";
}
but I want this NSDictionary should be inside a string so that in server I can eval it and get the dictionary back.
Here I want something like toString() is java or str() in pyhton.
This is my Http request:-
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:path]];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
NSError *error;
NSData *preparedPostData = [postdata dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postdata length]];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:preparedPostData ];
[NSURLConnection sendAsynchronousRequest:request
queue:backgroundQueue
completionHandler:^(NSURLResponse response,NSData data,NSError *error){
NSString *result = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
if(complect)
complect(result,error);
}
];
Update
My request is going to server properly but The problem is with data structure.
when I am trying to access the data with request key then it is giving error because the value for the request key is not supported in server as this value is having = sign in between. So what I want is that to make the requset data structure properly.want to send the NSDictionary itself as a string.
postdata should be something like this
request = "{
age : 24;
location : bangalore;
name : Kousik;
}"
I dont want to use application/json.

Answer 1

NSString *stringURL = [NSString stringWithFormat:#"name=%#&age=%#&location=%#",#"Kousik",#"24",#"bangalore"];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"%#%#",ServerURL,API_SaveContctListToAddressBook]]];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[stringURL dataUsingEncoding:NSUTF8StringEncoding]];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
// NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
if (!data) {
data = [[NSData alloc] init];
}
NSDictionary *dic =[ NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&connectionError];
completionHandler(dic, NO);
}];

Answer 2

Use NSJSONSerialization to convert your dictionary to NSData and then attach it on HTTPBody
NSData *httpBody = [NSJSONSerialization dataWithJSONObject:dict options:0 error:nil];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"%#%#",ServerURL,APIPath]]];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:httpBody];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
//Handling code
}];