Common java Regular Expression tools and Regular Expressions

Common java Regular Expression tools and Regular Expressions

The examples in this article share the code of the java Regular Expression tool class for your reference. The specific content is as follows:

Import com. google. common. base. strings; import java. util. regex. matcher; import java. util. regex. pattern;/*** common Regular Expression * Created by tookbra on 2016/4/7. */public class RegexUtils {/*** determine whether the ip address is correct ** @ param ip * @ return boolean true, pass, false, */public static boolean isIp (String ip) {if (Strings. isNullOrEmpty (ip) return false; string regex = "^ (1 \ d {2} | 2 [0-4] \ d | 25 [0-5] | [1-9] \ d | [1-9]) \\. "+" (1 \ d {2} | 2 [0-4] \ d | 25 [0-5] | [1-9] \ d | \ d) \\. "+" (1 \ d {2} | 2 [0-4] \ d | 25 [0-5] | [1-9] \ d | \\ d) \\. "+" (1 \ d {2} | 2 [0-4] \ d | 25 [0-5] | [1-9] \ d | \\ d) $ "; return ip. matches (regex);}/*** determine whether the email address is correct ** @ param email * @ return boolean true, pass, false, failed to pass */public static boolean isEmail (String email) {if (Strings. isNullOrEmpty (email) return false; String regex = "\ w + ([-+.] \ w +) * @ \ w + ([-.] \ w + )*\\. \ w + ([-.] \ w +) * "; Return email. matches (regex);}/*** determines whether it contains Chinese characters. It is only applicable to Chinese characters and does not contain punctuation marks * @ param text * @ return boolean true, pass, false, */public static boolean isChinese (String text) {if (Strings. isNullOrEmpty (text) return false; Pattern p = Pattern. compile ("[\ u4e00-\ u9fa5]"); Matcher m = p. matcher (text); return m. find ();}/*** determine whether a positive integer ** @ param number * @ return boolean true, pass, false, not pass */public static B Oolean isNumber (String number) {if (Strings. isNullOrEmpty (number) return false; String regex = "[0-9] *"; return number. matches (regex);}/*** determines the number of decimal places (positive) ** @ param decimal * Number * @ param count * decimal places * @ return boolean true, false, not passed */public static boolean isDecimal (String decimal, int count) {if (Strings. isNullOrEmpty (decimal) return false; String regex = "^ (-)? ([1-9] {1} \ d *) | ([0] {1 }))(\\. (\ d) {"+ count + "})? $ "; Return decimal. matches (regex);}/*** determine whether it is a mobile phone number ** @ param phoneNumber * Mobile Phone Number * @ return boolean true, pass, false, */public static boolean isMobilePhoneNumber (String phoneNumber) {if (Strings. isNullOrEmpty (phoneNumber) return false; String regex = "^ (13 [0-9]) | (15 [0-9]) | (18 [1-9]) \ d {8} $ "; return phoneNumber. matches (regex);}/*** determine whether it is a mobile phone number ** @ param phoneNumber * Mobile Phone Number * @ return boolean true, pass, false, */public static boolean isPhoneNumber (String phoneNumber) {if (Strings. isNullOrEmpty (phoneNumber) return false; String regex = "^ 1 \ d {10} $"; return phoneNumber. matches (regex);}/*** determines whether a special character is contained ** @ param text * @ return boolean true, pass, false, failed to pass */public static boolean hasSpecialChar (String text) {if (Strings. isNullOrEmpty (text) return false; if (text. replaceAll ("[a-z] * [A-Z] * \ d *-* _ * \ s *",""). length () = 0) {// if it does not contain special characters return true;} return false;} private static boolean isChinese (char c) {Character. unicodeBlock ub = Character. unicodeBlock. of (c); if (ub = Character. unicodeBlock. cjk_uniied_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 ;}}

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