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

public class StrValidate {

    // 纯数字
    private static String DIGIT_REGEX = "[0-9]+";
    // 含有数字
    private static String CONTAIN_DIGIT_REGEX = ".*[0-9].*";
    // 纯字母
    private static String LETTER_REGEX = "[a-zA-Z]+";
    // 包含字母
    private static String CONTAIN_LETTER_REGEX = ".*[a-zA-z].*";
    // 纯中文
    private static String CHINESE_REGEX = "[u4e00-u9fa5]";
    // 仅仅包含字母和数字
    private static String LETTER_DIGIT_REGEX = "^[a-z0-9A-Z]+$";
    private static String CHINESE_LETTER_REGEX = "([u4e00-u9fa5]+|[a-zA-Z]+)";
    private static String CHINESE_LETTER_DIGIT_REGEX = "^[a-z0-9A-Zu4e00-u9fa5]+$";

    
    public static boolean isLetterDigit(String str) {
        return str.matches(LETTER_DIGIT_REGEX);
    }
    
    public static boolean isChinese(String con) {
        Pattern pattern = Pattern.compile(CHINESE_REGEX);
        for (int i = 0; i < con.length(); i = i + 1) {
            if (!pattern.matcher(
                    String.valueOf(con.charAt(i))).find()) {
                return false;
            }
        }
        return true;
    }
    
    public static boolean isLetterDigitOrChinese(String str) {
        return str.matches(CHINESE_LETTER_DIGIT_REGEX);
    }
    
    public static boolean checkChineseLetter(String passengerName) {
        Pattern pattern = Pattern.compile(CHINESE_LETTER_REGEX);
        Matcher matcher = pattern.matcher(passengerName);
        if (matcher.matches()) {
            //不包含特殊字符
            return true;
        } else {
            //包含了特殊字符
            return false;
        }
    }
    
    public static boolean checkPunctuation(String ret) {
        boolean b = false;
        String tmp = ret;
//        replaceAll里面的正则匹配可以清空字符串中的中英文标点符号，只保留数字、英文和中文。
        tmp = tmp.replaceAll("\p{P}", "");
        if (ret.length() != tmp.length()) {
            b = true;
        }
        return b;
    }
    public static boolean isDigit(String ret) {
        return ret.matches(DIGIT_REGEX);
    }
    public static boolean isLetter(String ret) {
        return ret.matches(LETTER_REGEX);
    }
    public static boolean hasDigit(String ret) {
        return ret.matches(CONTAIN_DIGIT_REGEX);
    }
    public static boolean hasLetter(String ret) {
        return ret.matches(CONTAIN_LETTER_REGEX);
    }
    public static void main(String[] args) {
//        System.out.println(isLetterDigitOrChinese("33dd33") + " ------- 麦迪娜·买买提 ---------");
//        System.out.println(isChinese("麦迪娜·买买提"));
//        System.out.println(isChinese("这个X") + " checkChineseLetter ");
//        System.out.println(isChinese("checkChineseLetter"));
//        System.out.println(isChinese("checkChineseLetter3"));

        System.out.println(hasDigit("99999"));
        System.out.println(hasDigit("9999舅舅9"));
    }
}

java用正则表达式判断字符串中是否仅包含英文字母、数字和汉字_灵思致远Leansmall的博客-CSDN博客_java判断字符串只包含数字字母

Java中判断某一字符串是否包含数字、字母和中文 - 楼兰胡杨 - 博客园