字符工具类

StringUtil.java

import org.springframework.util.StringUtils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class StringUtil {

    private StringUtil() {
    }

    /**
     * 判断字符串是否包含字母
     *
     * @param str
     * @return
     */
    public static boolean containsLetter(String str) {
        if (!StringUtils.hasText(str)) {
            return false;
        }

        String regex = ".*[a-zA-Z]+.*";
        Matcher m = Pattern.compile(regex).matcher(str);
        return m.matches();
    }
    
    /**
     * 判断给定字符是不是中文
     *      GENERAL_PUNCTUATION 判断中文的“号
     *      CJK_SYMBOLS_AND_PUNCTUATION 判断中文的。号
     *      HALFWIDTH_AND_FULLWIDTH_FORMS 判断中文的，号
     * @param c
     * @return
     */
    public static boolean isChinese(char c) {
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
                || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
            return true;
        }
        return false;
    }

    /**
     * 判断给定字符串是否包含中文
     *
     * @param strName
     * @return
     */
    public static boolean isChinese(String strName) {
        char[] ch = strName.toCharArray();
        for (char c : ch) {
            if (isChinese(c)) {
                return true;
            }
        }
        return false;
    }    

}