java 使用正则表达示判断是不是合法的IPV4IPV6地址

最新推荐文章于 2024-04-26 10:49:17 发布

转载最新推荐文章于 2024-04-26 10:49:17 发布 · 323 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/re1n/p/5834526.html

文章标签：

#java

本文提供了一种使用Java正则表达式验证IPv4和IPv6地址的方法。通过两个独立的Pattern实例，该代码能够准确判断输入的字符串是否符合IPv4或IPv6的标准格式。

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直接看代码：

import java.util.regex.Pattern;
public class App {
    private static Pattern pattern;
    private static Pattern ptipv4;
    static {
        // ipv6
        pattern = Pattern.compile("^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:)|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}(:[0-9A-Fa-f]{1,4}){1,2})|(([0-9A-Fa-f]{1,4}:){4}(:[0-9A-Fa-f]{1,4}){1,3})|(([0-9A-Fa-f]{1,4}:){3}(:[0-9A-Fa-f]{1,4}){1,4})|(([0-9A-Fa-f]{1,4}:){2}(:[0-9A-Fa-f]{1,4}){1,5})|([0-9A-Fa-f]{1,4}:(:[0-9A-Fa-f]{1,4}){1,6})|(:(:[0-9A-Fa-f]{1,4}){1,7})|(([0-9A-Fa-f]{1,4}:){6}(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){5}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){4}(:[0-9A-Fa-f]{1,4}){0,1}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){3}(:[0-9A-Fa-f]{1,4}){0,2}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){2}(:[0-9A-Fa-f]{1,4}){0,3}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|([0-9A-Fa-f]{1,4}:(:[0-9A-Fa-f]{1,4}){0,4}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(:(:[0-9A-Fa-f]{1,4}){0,5}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3}))$");
        // ipv4
        ptipv4 = Pattern.compile("^(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3}$");
    }
    public static void main( String[] args ) {
        System.out.println(pattern.matcher("2001:0DB8:0000:0023:0008:0800:200C:417A").matches());
        System.out.println(pattern.matcher("2001:DB8:0:23:8:800:200C:417A").matches());
        System.out.println(pattern.matcher("2001:DB8:0:23:8:800:192.1.0.0").matches());
        System.out.println(pattern.matcher("2001:DB8:0::800:192.1.0.0").matches());
        System.out.println(pattern.matcher("2001:DB8:0:23::192.1.0.0").matches());
        System.out.println(pattern.matcher("::192.1.0.0").matches());
        System.out.println(pattern.matcher("1:af::3").matches());
        System.out.println(pattern.matcher("1:af::").matches());
        System.out.println(pattern.matcher("::1:af:0").matches());
        System.out.println(pattern.matcher("::0").matches());
        System.out.println("---------------------");
        System.out.println(pattern.matcher("+2001:0DB8:0000:0023:0008:0800:200C:417A").matches());
        System.out.println(pattern.matcher("2001:0DB8:0z00:0023:0008:0800:200C:417A").matches());
        System.out.println(pattern.matcher("2001:DB8:0:23:800::192.1.0.0.1").matches());
        System.out.println(pattern.matcher("2001:DB8::23::800:192.1.0.0").matches());
        System.out.println(pattern.matcher(":::").matches());
        System.out.println(pattern.matcher("1:::2").matches());

        System.out.println("---------------------");
        System.out.println(ptipv4.matcher("1.1.0.1").matches());
        System.out.println(ptipv4.matcher("123.1.0.19").matches());
        System.out.println(ptipv4.matcher("255.255.255.255").matches());
        System.out.println(ptipv4.matcher("0.0.0.0").matches());
        System.out.println("---------------------");
        System.out.println(ptipv4.matcher("-1.1.0.1").matches());
        System.out.println(ptipv4.matcher("1.1b.0.1").matches());
        System.out.println(ptipv4.matcher("1.01.0.1").matches());
        System.out.println(ptipv4.matcher("1.1.300.1").matches());
        System.out.println(ptipv4.matcher("1.1..1").matches());
    }
}