iOS -post data to java jersery jax-rs web service - ios

Question

hi im implementing a iOS app which post data to RESTFul web-service implemented in java jersey.
iOS code:
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
NSDictionary *jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:#"Chris", #"name", #"99", #"age", nil];
NSData * JsonData =[NSJSONSerialization dataWithJSONObject:jsonDictionary options:NSJSONWritingPrettyPrinted error:nil];
NSString * jsonString= [[NSString alloc] initWithData:JsonData encoding:NSUTF8StringEncoding];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"%#",jsonString] dataUsingEncoding:NSUTF8StringEncoding]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:#"http://localhost:8080/testwebservice/submit"]]];
[request setHTTPBody:body];
[request setHTTPMethod:#"POST"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[NSURLConnection sendAsynchronousRequest: request
queue: queue
completionHandler: ^(NSURLResponse *response, NSData *data, NSError *error) {
if (error || !data) {
// Handle the error
NSLog(#"Server Error : %#", error);
} else {
// Handle the success
NSLog(#"Server Response :%#",response);
}
}
];
Java Jersey code:
#POST
#Path("submit")
#Consumes(MediaType.APPLICATION_FORM_URLENCODED)
public void postMultivaluedName(MultivaluedMap<String, String> aFormParams) {
System.out.println("postMultivaluedName");
System.out.println("Name is " + aFormParams.get("name"));
System.out.println("Age is " + aFormParams.get("age"));
}
The problem i'm facing is that the value of name and age received on web service is null.
however, if i modify iOS to use this code, it works:
NSString *postString = #"name=chris&age=99";
[request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
So how can i modify my java Jersey to accept NSData using NSDictionary?
While debugging, i also notice that jsonString is actually having #"{\n "name":"chris" \n "age":"99" \n }. is it suppose to have \n in the string?

Answer 1

i managed to solve it. The reason why the following code works is because i set the http content type to application/x-www-form-urlencoded:
NSString *postString = #"name=chris&age=99";
[request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
instead, set the content-type to application/json; charset=utf-8