java检查日期格式 java 日期校验

最近做的事情，日期时间用的是字符串在传，需要对之进行校验。

 

网上看了看，没找到非常满意的，于是自己动手，写了一个。

 

其中不完美的是：没有根据闰年判断2月分有没有29这一天。

 

其中要说明的：

 

1、年份限制在2000~2999这1000年中。

2、基本格式如下：

年：yyyy

月：yyyy-[M]M

日：yyyy-[M]M-[d]d

时：yyyy-[M]M-[d]d HH:00:00

时间：yyyy-[M]M-[d]d HH:mm:ss

 

private static final String yearPattern = "^2[0-9]{3}$";
  private static final String monthPattern = "^2[0-9]{3}-(0?[1-9]|1[0-2])$";
  private static final String janPattern = "(0?[13578]|1[02])-(0?[1-9]|[12][0-9]|3[01])";
  private static final String febPattern = "0?2-(0?[1-9]|[12][0-9])";
  private static final String aprPattern = "(0?[469]|11)-(0?[1-9]|[12][0-9]|30)";
  private static final String dayPattern = String.format("^2[0-9]{3}-(%s|%s|%s)$", janPattern, febPattern, aprPattern);
  private static final String hourFormat = String.format("^2[0-9]{3}-(%s|%s|%s) ([01][0-9]|2[0-3]):00:00$", febPattern, janPattern, aprPattern);
  private static final String timeFormat = String.format("^2[0-9]{3}-(%s|%s|%s) ([01][0-9]|2[0-3])(:[0-5][0-9]){2}$", febPattern, janPattern, aprPattern);

  public static void main(String[] args) {
    System.out.println("2000".matches(yearPattern));
    System.out.println("2999".matches(yearPattern));
    System.out.println("1999".matches(yearPattern));
    System.out.println("20001".matches(yearPattern));
    System.out.println("200".matches(yearPattern));

    System.out.println("2000-11".matches(monthPattern));
    System.out.println("2000-01".matches(monthPattern));
    System.out.println("2000-1".matches(monthPattern));
    System.out.println("2000-13".matches(monthPattern));
    System.out.println("2000-00".matches(monthPattern));

    System.out.println("2000-11-1".matches(dayPattern));
    System.out.println("2000-11-01".matches(dayPattern));
    System.out.println("2000-11-31".matches(dayPattern));
    System.out.println("2000-11-00".matches(dayPattern));
    System.out.println("2000-11-29".matches(dayPattern));
    System.out.println("2000-2-29".matches(dayPattern));
    System.out.println("2000-2-30".matches(dayPattern));

    System.out.println("2000-11-1 18:60:00".matches(hourFormat));
    System.out.println("2000-11-1 18:00:10".matches(hourFormat));
    System.out.println("2000-1-1 18:00:00".matches(hourFormat));
    System.out.println("2000-11-1 28:00:00".matches(hourFormat));
    System.out.println("2000-11-1 08:00:00".matches(hourFormat));
    System.out.println("2000-11-1_18:00:00".matches(hourFormat));

    System.out.println("2000-11-1 08:00:00".matches(timeFormat));
    System.out.println("2000-11-1 08:10:00".matches(timeFormat));
    System.out.println("2000-11-1 08:00:50".matches(timeFormat));
    System.out.println("2000-11-1 08:00:70".matches(timeFormat));
  }