日期格式正则：日期正则及日期加时间的正则

@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]))))))"); 
        
        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
2004/04/30 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][0-9])|([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