java正则表达式验证非原创

  1 /**
  2  *
  3  */
  4 package com.ssh.util;
  5
  6 import java.util.regex.Matcher;
  7 import java.util.regex.Pattern;
  8
  9 /**
 10  * @author leorain
 11  *
 12  */
 13 public class ValidateUtil {
 14     /**
 15      * 手机号验证
 16      *
 17      * @param  str
 18      * @return 验证通过返回true
 19      */
 20     public static boolean isMobile(String str) {
 21         Pattern p = null;
 22         Matcher m = null;
 23         boolean b = false;
 24         p = Pattern.compile("^[1][3,4,5,8][0-9]{9}$"); // 验证手机号
 25         m = p.matcher(str);
 26         b = m.matches();
 27         return b;
 28     }
 29     /**
 30      * 电话号码验证
 31      *
 32      * @param  str
 33      * @return 验证通过返回true
 34      */
 35     public static boolean isPhone(String str) {
 36         Pattern p1 = null,p2 = null;
 37         Matcher m = null;
 38         boolean b = false;
 39         p1 = Pattern.compile("^[0][1-9]{2,3}-[0-9]{5,10}$");  // 验证带区号的
 40         p2 = Pattern.compile("^[1-9]{1}[0-9]{5,8}$");         // 验证没有区号的
 41         if(str.length() >9)
 42         {    m = p1.matcher(str);
 43              b = m.matches();
 44         }else{
 45             m = p2.matcher(str);
 46              b = m.matches();
 47         }
 48         return b;
 49     }
 50     /**
 51      * 日期格式验证
 52      * @param str
 53      * @return 验证通过返回true
 54      * */
 55     public static boolean formateDate(String str){
 56         String eL= "^((\\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]))))))";
 57         Pattern p = Pattern.compile(eL);
 58         Matcher m = p.matcher(str);
 59         boolean flag = m.matches();
 60         return flag;
 61         }
 62
 63     /**
 64      * @param t
 65      * @return
 66      */
 67     public static <T extends java.util.Date> java.util.Date toUtil(T t){
 68         java.util.Date date = t;
 69         return date;
 70     }
 71
 72
 73     enum Type {
 74     DATE, TIME, TIMESTAMP
 75     }
 76     @SuppressWarnings("unchecked")
 77     public static <T extends java.util.Date> T toSql(java.util.Date utilDate,
 78             Type type) {
 79         T t = null;
 80         long millionSeconds = utilDate.getTime();
 81
 82         switch (type) {
 83         case DATE:
 84             t = (T) new java.sql.Date(millionSeconds);
 85             break;
 86         case TIME:
 87             t = (T) new java.sql.Time(millionSeconds);
 88             break;
 89         case TIMESTAMP:
 90             t = (T) new java.sql.Timestamp(millionSeconds);
 91             break;
 92         default:
 93             break;
 94         }
 95         return t;
 96     }
 97     /**
 98     *
 99     * @param a
100     *            被匹配的长字符串
101     * @param b
102     *            匹配的短字符串
103     * @return 匹配次数
104     */
105    public int hit(String a, String b) {
106        if (a.length() < b.length()) {
107            return 0;
108        }
109        char[] a_t = a.toCharArray();
110        char[] b_t = b.toCharArray();
111        int count = 0, temp = 0, j = 0;
112
113        for (int i = 0; i < a_t.length; i++) {
114            // 保证一个连续的字符串 b 跟 a中某段相匹配
115            if (a_t[i] == b_t[j] && j < b_t.length) {
116                temp++;
117                j++;
118                // 此时连续的字符串 b 跟 已跟 a 中某段相匹配
119                if (temp == b_t.length) {
120                    count++;
121                    temp = 0;
122                    j = 0;
123                }
124            }
125            // 只要有一个字符不匹配，temp计数从来
126            else {
127                temp = 0;
128                j = 0;
129            }
130        }
131
132        return count;
133    }
134 }