JSON Object(如NSDictionary,NSArray)转化为JSON格式的NSString #iOS开发

     NSString *string = [self jsonObjectToJSONString:inputDataDic];

 -(NSString*)jsonObjectToJSONString:(id)object
 {
     if ([NSJSONSerialization isValidJSONObject:object]) {
         NSString *jsonString = nil;
         NSError *error;
         NSData *jsonData = [NSJSONSerialization dataWithJSONObject:object
                                                            options:NSJSONWritingPrettyPrinted // Pass 0 if you don't care about the readability of the generated string
                                                              error:&error];
         if (!jsonData) {
             NSLog(@"Got an error: %@", error);
         } else {
             jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
         }
         return jsonString;
     }else{
         return nil;
     }

 }