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How to get a json file from a website in iOS?
NSString *urlString = [NSString stringWithFormat:@"http://maps.google.co.kr?q=%@&output=json",
                       [address stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

NSString *content = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]
                                                        encoding:NSKoreanEncoding

                                                     error:&error];