Character.UnicodeBlock中cjk的说明

Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS ： 4E00-9FBF：CJK 统一表意符号 
Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS ：F900-FAFF：CJK 兼容象形文字 Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A ：3400-4DBF：CJK 统一表意符号扩展 A
CJK的意思是“Chinese，Japanese，Korea”的简写 ，实际上就是指中日韩三国的象形文字的Unicode编码 
Character.UnicodeBlock.GENERAL_PUNCTUATION ：2000-206F：常用标点 Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION ：3000-303F：CJK 符号和标点 Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS ：FF00-FFEF：半角及全角形式

  1 /**
  2      * 校验一个字符是否是汉字
  3      * 
  4      * @param c
  5      *            被校验的字符
  6      * @return true代表是汉字
  7      */
  8     public static boolean isChineseChar(char c) {
  9         try {
 10             return String.valueOf(c).getBytes("UTF-8").length > 1;
 11         } catch (UnsupportedEncodingException e) {
 12             e.printStackTrace();
 13             return false;
 14         }
 15     }
 16 
 17     /**
 18      * 验证字符串内容是否包含下列非法字符<br>
 19      * `~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆
 20      * 
 21      * @param content
 22      *            字符串内容
 23      * @return 't'代表不包含非法字符，otherwise代表包含非法字符。
 24      */
 25     public static char validateLegalString(String content) {
 26         String illegal = "`~!#%^&*=+\\|{};:'\",<>/?○●★☆☉♀♂※¤╬の〆";
 27         char isLegalChar = 't';
 28         L1: for (int i = 0; i < content.length(); i++) {
 29             for (int j = 0; j < illegal.length(); j++) {
 30                 if (content.charAt(i) == illegal.charAt(j)) {
 31                     isLegalChar = content.charAt(i);
 32                     break L1;
 33                 }
 34             }
 35         }
 36         return isLegalChar;
 37     }
 38 
 39     /**
 40      * 验证是否是汉字或者0-9、a-z、A-Z
 41      * 
 42      * @param c
 43      *            被验证的char
 44      * @return true代表符合条件
 45      */
 46     public static boolean isRightChar(char c) {
 47         return isChinese(c) || isWord(c);
 48     }
 49 
 50     /**
 51      * 校验某个字符是否是a-z、A-Z、_、0-9
 52      * 
 53      * @param c
 54      *            被校验的字符
 55      * @return true代表符合条件
 56      */
 57     public static boolean isWord(char c) {
 58         String regEx = "[\\w]";
 59         Pattern p = Pattern.compile(regEx);
 60         Matcher m = p.matcher("" + c);
 61         return m.matches();
 62     }
 63 
 64     /**
 65      * 判定输入的是否是汉字
 66      * 
 67      * @param c
 68      *            被校验的字符
 69      * @return true代表是汉字
 70      */
 71     public static boolean isChinese(char c) {
 72         Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
 73         if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
 74                 || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
 75                 || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
 76                 || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
 77                 || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
 78                 || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
 79             return true;
 80         }
 81         return false;
 82     }
 83 
 84     /**
 85      * 校验String是否全是中文
 86      * 
 87      * @param name
 88      *            被校验的字符串
 89      * @return true代表全是汉字
 90      */
 91     public static boolean checkNameChese(String name) {
 92         boolean res = true;
 93         char[] cTemp = name.toCharArray();
 94         for (int i = 0; i < name.length(); i++) {
 95             if (!isChinese(cTemp[i])) {
 96                 res = false;
 97                 break;
 98             }
 99         }
100         return res;
101     }

 

转载于:https://www.cnblogs.com/wangziqiang/p/3810440.html