How to request datas to server in post method ios? - ios

Question

Hi I am new to ios post method.In my app i want to show list of values.
The request format is:
{"customerId":"000536","requestHeader":{"userId":"000536"}}
The code i used is:
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
NSString *post =[[NSString alloc] initWithFormat:#"customerId=%#&userId=%#",#"000536",#"000536"];
NSLog(#"PostData: %#",post);
NSURL *url=[NSURL URLWithString:#"https://servelet/URL"];
NSDictionary *jsonDict = [[NSDictionary alloc] initWithObjectsAndKeys:
#"000536", #"customerId",
#"000536", #"userId",
nil];
NSError *error;
NSData *postData = [NSJSONSerialization dataWithJSONObject:jsonDict options:0 error:&error];
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/json; character=utf-8" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
//[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
[NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response,NSData *data, NSError *error){
// NSLog(#"Response code: %ld", (long)[response statusCode]);
if(error || !data){
NSLog(#"Server Error : %#", error);
}
else
{
NSLog(#"Server Response :%#",response);
NSError* error;
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:data
options:kNilOptions
error:&error];
NSArray* latest = [json objectForKey:#"apptModel"];
NSLog(#"items: %#", latest);
}
}
];
The response is : (null)
How to request the values with same format as shown above?Thanks in advance.

Answer 1

Use This Code
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
NSString *post =[[NSString alloc] initWithFormat:#"customerId=%#&userId=%#",#"000536",#"000536"];
NSLog(#"PostData: %#",post);
NSURL *url=[NSURL URLWithString:#"https://servelet/URL"];
NSDictionary *jsonDict = [[NSDictionary alloc] initWithObjectsAndKeys:
#"000536", #"customerId",
#"000536", #"userId",
nil];
NSError *error;
NSData *postData = [NSJSONSerialization dataWithJSONObject:jsonDict options:0 error:&error];
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/json; character=utf-8" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
//[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *err)
{
// NSLog(#"Response code: %ld", (long)[response statusCode]);
if(error || !data){
NSLog(#"Server Error : %#", error);
}
else
{
NSLog(#"Server Response :%#",response);
NSError* error;
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:data
options:kNilOptions
error:&error];
NSArray* latest = [json objectForKey:#"apptModel"];
NSLog(#"items: %#", latest);
}
}];
[task resume];