java正则表达式:验证字符串数字

Posted 2020-10-10 N神3

 正则表达式：^([0-9]+)$ -> ^：匹配以0-9开头，[0-9]：匹配0-9数字，+：匹配至少一个数字，$：匹配以数字结尾

/**
*正则表达式:验证字符串数字
*两种方式：
*1.pattern.matcher(number.trim()).find()
*2.Pattern.matches(numberRegexp,number.trim())
**/
public static boolean matchNumber(String number) {
    boolean result = false;
    if (number!=null) {
        final String numberRegexp = "^([0-9]+)$";
        try {
            Pattern pattern = Pattern.compile(numberRegexp);
            if (pattern.matcher(number.trim()).find()) {
                result = true;
            }

            /*if (Pattern.matches(numberRegexp,number.trim())) {
                result = true;
            }*/
        } catch (Exception e) {
            result = false;
        }
    } else {
        result = false;
    }
    return result;
}