java正则表达式验证日期_java中的日期验证正则表达式

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#java正则表达式验证日期

本文展示了如何使用正则表达式在Java中进行日期和时间格式的校验，包括ISO 8601标准的日期格式和带有时区的时间格式。通过实例代码演示了`Pattern`和`Matcher`的使用，以及两种不同日期/时间格式的匹配规则区别。

@Test public void Testregexp(){

//Pattern p = Pattern.compile("^((\\d{2}(([02468][048])|([13579][26]))[\\/\\/\\s]?((((0?"+"[13578])|(1[02]))[\\/\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))" +"|(((0?[469])|(11))[\\/\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|" +"(0?2[\\/\\/\\s]?((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][12"+"35679])|([13579][01345789]))[\\/\\/\\s]?((((0?[13578])|(1[02]))" +"[\\/\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))" +"[\\/\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\/\\/\\s]?((0?[" +"1-9])|(1[0-9])|(2[0-8]))))))");

Pattern p = Pattern.compile("^((\\d{2}(([02468][048])|([13579][26]))[\\-\\-\\s]?((((0?" +"[13578])|(1[02]))[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))" +"|(((0?[469])|(11))[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(30)))|" +"(0?2[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][12" +"35679])|([13579][01345789]))[\\-\\-\\s]?((((0?[13578])|(1[02]))" +"[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))" +"[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\-\\s]?((0?[" +"1-9])|(1[0-9])|(2[0-8]))))))");

String s = "2003-02-20";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004/02/29";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004/04/31";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004/04/30";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004/04/30";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004/09/30";

System.out.println(s + " " + p.matcher(s).matches());

}

以上运行结果:

2003-02-20 true

2004/02/29 false

2004/04/31 false

2004/04/30 false

2004/09/30 false

@Test public void Testexp(){

Pattern p = Pattern.compile("^((\\d{2}(([02468][048])|([13579][26]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\\s(((0?[0-9])|([1-2][0-3]))\\:([0-5]?[0-9])((\\s)|(\\:([0-5]?[0-9])))))?$");

String s = "2003-02-29 23:59:59";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004-02-29 23:59:59";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004-04-31 0:59:59";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004-04-30 01:11:0";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004-04-30 0:0:0";

System.out.println(s + " " + p.matcher(s).matches());

s = "2004-04-30 00:00:59";

System.out.println(s + " " + p.matcher(s).matches());

}

以上运行结果:

2003-02-29 23:59:59 false

2004-02-29 23:59:59 true

2004-04-31 0:59:59 false

2004-04-30 01:11:0 true

2004-04-30 0:0:0 true

2004-04-30 00:00:59 true