校验日期格式{YYYYMMDD的 java代码

1. yyyy-MM-dd 格式校验

 1 public class RegexpUtils {
 2 
 3     /**
 4      * 是否是 yyyy-MM-dd 日期格式 校验
 5      * @param date 日期
 6      * @return boolean
 7      */
 8     public static boolean isDateFormat(String date) {
 9         if (StringUtils.isBlank(date)) {
10             return false;
11         }
12         String regexp = "[0-9]{4}-[0-9]{2}-[0-9]{2}";
13         return Pattern.compile(regexp).matcher(date).matches();
14     }
15 
16 }

2. yyyy-MM-dd hh:mm:ss 格式校验

 1 import java.util.regex.Matcher;
 2 import java.util.regex.Pattern;
 3 
 4 public class TimeUtil {
 5     /**
 6      * 验证时间字符串格式输入是否正确
 7      * @param timeStr
 8      * @return
 9      */
10     public static boolean valiDateTimeWithLongFormat(String timeStr) {
11         String format = "((19|20)[0-9]{2})-(0?[1-9]|1[012])-(0?[1-9]|[12][0-9]|3[01]) "
12                 + "([01]?[0-9]|2[0-3]):[0-5]?[0-9]:[0-5]?[0-9]";
13         Pattern pattern = Pattern.compile(format);
14         Matcher matcher = pattern.matcher(timeStr);
15         if (matcher.matches()) {
16             pattern = Pattern.compile("(\\d{4})-(\\d+)-(\\d+).*");
17             matcher = pattern.matcher(timeStr);
18             if (matcher.matches()) {
19                 int y = Integer.valueOf(matcher.group(1));
20                 int m = Integer.valueOf(matcher.group(2));
21                 int d = Integer.valueOf(matcher.group(3));
22                 if (d > 28) {
23                     Calendar c = Calendar.getInstance();
24                     c.set(y, m-1, 1);
25                     int lastDay = c.getActualMaximum(Calendar.DAY_OF_MONTH);
26                     return (lastDay >= d);
27                 }
28             }
29             return true;
30         }
31         return false;
32     }
33     
34     public static void main(String[] args){
35         System.out.println(TimeUtil.valiDateTimeWithLongFormat("2016-5-2 08:02:02"));
36         System.out.println(TimeUtil.valiDateTimeWithLongFormat("2016-02-29 08:02:02"));
37         System.out.println(TimeUtil.valiDateTimeWithLongFormat("2015-02-29 08:02:02"));
38         System.out.println(TimeUtil.valiDateTimeWithLongFormat("2016-02-02 082:02"));
39     }
40 }