Remove extra spaces and new lines from JSON - ios

Question

Below is my code, and am trying to parse a JSON; I am getting response but when am printing dictionary, it's null.
below is the response string, result of JSON.
NSString *post = [[NSString alloc] initWithFormat:#"jobid=%#",idjob];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSURL *url = [NSURL URLWithString:#"URL"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody:postData];
NSURLResponse *response;
NSError *error;
NSData *urlData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&response error:&error];
NSString *str=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(#"login:%#",str);
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error];
NSLog(#"aarraa:%#",jsonDict);
Response for str :
{"Jobdesc":[{"jobid":"11260","job_title":"Linux + Nagios System Administrator","job_desc":"<p>Technical skills required:</p>
<ol>
<li>Should be ready to work during French timings</li>
<li>Linux Certification / training is a must</li>
<li>Linux System administration (Red hat Linux, CentOS Servers)</li>
<li>Experience in LAMP configuration and troubleshooting</li>
<li>Knowledge on windows OS</li>
<li>Experience on monitoring tools like Nagios / Centreon, Ops5</li>
<li>Scripting in Shell, Perl or Python</li>
</ol>
","job_role":"Linux + Nagios System Administrator","job_exp":"1-5 year","job_education":"Others","job_location":"Delhi","job_address":"Delhi","job_company_name":"Pandya Business Solutions.","job_company_url":"http://www.pandyabusinesssolutions.com/","job_company_email":"singhjapesh#gmail.com","job_status":""}]}
but parameter jsonDict is null.

Answer 1

Try this...
NSString *jsonString = [NSString stringWithFormat:#"URL"];
NSURL *nurl = [NSURL URLWithString:jsonString];
NSData *jsonData = [NSData dataWithContentsOfURL:nurl];
NSError *error = nil;
NSDictionary *dictResult = [NSJSONSerialization
JSONObjectWithData:jsonData options:0 error:&error];

Answer 2

It seems that you are trying to serialise your data just before you completely get it, below is the code with completionHandler which will begin further process once you get all your data, so try this:
[NSURLConnection sendAsynchronousRequest: theRequest queue [NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
NSString *str=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error];
}];

Answer 3

i tried validating JSON response, and found that there were extra spaces in JSON so below is my resolved answer.
NSString *post = [[NSString alloc] initWithFormat:#"jobid=%#",idjob];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSURL *url = [NSURL URLWithString:#"http://ncrjobs.in/webservice/jobdesc.php"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody:postData];
NSURLResponse *response;
NSError *error;
NSData *urlData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:&response error:&error];
NSString *str=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSCharacterSet *spaces=[NSCharacterSet whitespaceCharacterSet];
NSPredicate *predicates=[NSPredicate predicateWithFormat:#"SELF !=''"];
NSArray *temparray=[[str componentsSeparatedByCharactersInSet:spaces]filteredArrayUsingPredicate:predicates];
str=[temparray componentsJoinedByString:#" "];
NSString *string = [str stringByReplacingOccurrencesOfString:#"[\r\n]" withString:#"" options:NSRegularExpressionSearch range:NSMakeRange(0, str.length)];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[string dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error];

Answer 4

Serialize data like this.
NSMutableDictionary *json =[NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:&error];