工具类：CharUtil

package com.etc.util;

import java.util.regex.Pattern;

public class CharUtil {

    public static void main(String[] args) {

        String[] strArr = new String[] { "www.micmiu.com", "!@#$%^&*()_+{}[]|\"'?/:;<>,.", "！￥……（）——：；“”‘’《》，。？、", "不要啊", "やめて", "韩佳人", "???" };

        for (String str : strArr) {

            System.out.println("===========> 测试字符串：" + str);

            System.out.println("正则判断结果：" + isChineseByREG(str) + " -- " + isChineseByName(str));

            System.out.println("Unicode判断结果 ：" + isChinese(str));

            System.out.println("详细判断列表：");

            char[] ch = str.toCharArray();

            for (int i = 0; i < ch.length; i++) {

                char c = ch[i];

                System.out.println(c + " --> " + (isChinese(c) ? "是" : "否"));

            }

        }

    }

    // 根据Unicode编码完美的判断中文汉字和符号

    private 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.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B

                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS

                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {

            return true;

        }

        return false;

    }

    // 完整的判断中文汉字和符号

    public static boolean isChinese(String strName) {

        char[] ch = strName.toCharArray();

        for (int i = 0; i < ch.length; i++) {

            char c = ch[i];

            if (isChinese(c)) {

                return true;

            }

        }

        return false;

    }

    // 只能判断部分CJK字符（CJK统一汉字）

    public static boolean isChineseByREG(String str) {

        if (str == null) {

            return false;

        }

        Pattern pattern = Pattern.compile("[\\u4E00-\\u9FBF]+");

        return pattern.matcher(str.trim()).find();

    }

    // 只能判断部分CJK字符（CJK统一汉字）

    public static boolean isChineseByName(String str) {

        if (str == null) {

            return false;

        }

        // 大小写不同：\\p 表示包含，\\P 表示不包含

        // \\p{Cn} 的意思为 Unicode 中未被定义字符的编码，\\P{Cn} 就表示 Unicode中已经被定义字符的编码

        String reg = "\\p{InCJK Unified Ideographs}&&\\P{Cn}";

        Pattern pattern = Pattern.compile(reg);

        return pattern.matcher(str.trim()).find();

    }

}

MyUsernameValidator

package com.etc.validator;

import com.etc.util.CharUtil;

import com.opensymphony.xwork2.validator.ValidationException;

import com.opensymphony.xwork2.validator.validators.FieldValidatorSupport;

public class MyUsernameValidator extends FieldValidatorSupport

{

	//执行校验

	public void validate(Object ctx) throws ValidationException {

		//1  获取输入的字段名

		String  field  = this.getFieldName();

		//2 获取该字段的值

		String value = (String) this.getFieldValue(field,ctx);

		//3 如果含有中文，则报错

		if(CharUtil.isChinese(value))

		{

			this.addFieldError(field, ctx);

		}

	}

}