NSDate YYYY-MM-dd hh:mm:ss

#pragma mark  获取日期
-  (NSString *)getNowDate
{
    NSDate *date=[NSDate date];
    NSDateFormatter *formatter=[[NSDateFormatter alloc]init];
    [formatter setDateFormat:@"YYYY-MM-dd hh:mm:ss"];
    NSString *dateStr=[formatter stringFromDate:date];
    return dateStr;
}