iOS中将，NSArray转换成json数据

iOS中，将NSArray转换成son数据

 NSError*error = nil;

    NSData *jsonData = [NSJSONSerializationdataWithJSONObject:data
                                                       options:kNilOptions
                                                         error:&error];
   
    NSString *jsonString = [[NSStringalloc]initWithData:jsonData

                                                 encoding:NSUTF8StringEncoding];