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java 判断字符串是否包含字母_Java中判断某一字符串是否包含数字、字母和中文...

importjava.util.regex.Matcher;importjava.util.regex.Pattern;public classStrValidate {//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]+$";private static String CHINESE_LETTER_REGEX = "([\u4e00-\u9fa5]+|[a-zA-Z]+)";private static String CHINESE_LETTER_DIGIT_REGEX = "^[a-z0-9A-Z\u4e00-\u9fa5]+$";

public static booleanisLetterDigit(String str) {returnstr.matches(LETTER_DIGIT_REGEX);

}

public static booleanisChinese(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 booleanisLetterDigitOrChinese(String str) {returnstr.matches(CHINESE_LETTER_DIGIT_REGEX);

}

public static booleancheckChineseLetter(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 booleancheckPunctuation(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;

}returnb;

}public static booleanisDigit(String ret) {returnret.matches(DIGIT_REGEX);

}public static booleanisLetter(String ret) {returnret.matches(LETTER_REGEX);

}public static booleanhasDigit(String ret) {returnret.matches(CONTAIN_DIGIT_REGEX);

}public static booleanhasLetter(String ret) {returnret.matches(CONTAIN_LETTER_REGEX);

}public static voidmain(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"));

}

}