Request failed 'JSON' - iphone

Question

I have JSON format like below i need to post request to sever but the response from the server is error 500.
{"firstName":"Sharath K", "lastName":"babu",
"moMerchantAddresses":[{"email":"abc#abc.co.in"}]} >
NSMutableArray *objects = [NSMutableArray arrayWithObjects:#"Sharath",#"babu",#"[{\"email\":\"abc#abc.co.in\"}]", nil];
NSMutableArray *keys = [NSMutableArray arrayWithObjects:#"firstName",#"lastName",#"moMerchantAddresses", nil];
NSMutableDictionary *jsonDict = [NSMutableDictionary dictionaryWithObjects:objects forKeys:keys];
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDict
options:NSJSONWritingPrettyPrinted // Pass 0 if you don't care about the readability of the generated string
error:nil];
NSString *postLength = [NSString stringWithFormat:#"%d",[jsonData length]];
ServiceInterface *service = [[ServiceInterface alloc] init];
service.theDelegate = self;
service.theSuccessMethod = #selector(responseMerchantCreationService:);
service.theFailureMethod = #selector(requestFailedWithError:);
[self addServiceInterfaceToServiceStack:service];
NSString* stringURL = [kBase_URL stringByAppendingString:#"/merchant/create"];
NSString* webStringURL = [stringURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL* url = [NSURL URLWithString:webStringURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:jsonData];
[request setTimeoutInterval:30.0f];
NSLog(#"request file :: %#",request);
[service startWithRequest:request];
service = nil;
Please Help me in this

Answer 1

It may helps you .
NSMutableDictionary *emailDict = [[NSMutableDictionary alloc] initWithCapacity:0];
[emailDict setObject:#"abc#abc.co.in" forKey:#"email"];
NSMutableArray *emailArr = [[NSMutableArray alloc] init];
[emailArr addObject:emailDict];
NSMutableDictionary *mainDict = [[NSMutableDictionary alloc] initWithCapacity:0];
[mainDict setObject:#"Sharath" forKey:#"firstName"];
[mainDict setObject:#"babu" forKey:#"lastName"];
[mainDict setObject:emailDict forKey:#"moMerchantAddresses"];
Now change this mainDict to NSData *jsonData = [NSJSONSerialization dataWithJSONObject:mainDict options:NSJSONWritingPrettyPrinted // Pass 0 if you don't care about the readability of the generated string
error:nil];