字符串（汉字）长度判断

针对Oracle数据库中汉字在不通的字符集下所占字符长度不通，在保存时可能需要对源字符串的长度进行判断。 实现过程如下 /** * 针对汉字 进行计算长度 * @param string 计算的字符串 * @param shuJuKuHanZhiChangDu 汉字所占字符大小 * @return int 字符串长度 */ public static int stringOfSize(String string,int shuJuKuHanZhiChangDu) { int sum = 0; shuJuKuHanZhiChangDu--; if(string==null || string.length()==0){ return sum; } for (char charAt : string.toCharArray()){ sum++; if(isChinese(charAt)){ sum = sum+shuJuKuHanZhiChangDu; } } return sum; } /** * 根据Unicode编码完美的判断中文汉字和符号 * @param c 要判断的 字符 * @return boolean */ private static boolean isChinese(char c) { Character.UnicodeBlock ub = Character.UnicodeBlock.of(c); return ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION; }