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缘由：

功能开发需要，学习Java需要（之前有写过Python版本的，因为Python本身的特性以及netaddr模块，所以写起来很简单），后来发现Java里也有相关成熟的jar包，所以，也很简单。。。

正文：

参考解答：

# SubnetUtils
http://commons.apache.org/proper/commons-net/javadocs/api-3.6/index.html

# IpAddressMatcher
https://docs.spring.io/spring-security/site/docs/4.2.4.RELEASE/apidocs/org/springframework/security/web/util/matcher/IpAddressMatcher.html

# pom.xml
<dependency>
	<groupId>org.springframework.security</groupId>
	<artifactId>spring-security-web</artifactId>
	<version>4.2.3.RELEASE</version>
</dependency>

# test.java
import org.springframework.security.web.util.matcher.IpAddressMatcher;

private boolean matches(String ip, String subnet) {
    IpAddressMatcher ipAddressMatcher = new IpAddressMatcher(subnet);
    return ipAddressMatcher.matches(ip);
}

&

public class IpCheckMatching {
    /**
     * check if IP address match pattern
     *
     * @param pattern
     *            *.*.*.* , 192.168.1.0-255 , *
     * @param address
     *            - 192.168.1.1<BR>
     *            <code>address = 10.2.88.12  pattern = *.*.*.*   result: true<BR>
     *                address = 10.2.88.12  pattern = *   result: true<BR>
     *                address = 10.2.88.12  pattern = 10.2.88.12-13   result: true<BR>
     *                address = 10.2.88.12  pattern = 10.2.88.13-125   result: false<BR></code>
     * @return true if address match pattern
     */
    public static boolean checkIPMatching(String pattern, String address)
    {
        if (pattern.equals("*.*.*.*") || pattern.equals("*"))
            return true;

        String[] mask = pattern.split("\\.");
        String[] ip_address = address.split("\\.");
        for (int i = 0; i < mask.length; i++)
        {
            if (mask[i].equals("*") || mask[i].equals(ip_address[i]))
                continue;
            else if (mask[i].contains("-"))
            {
                int min = Integer.parseInt(mask[i].split("-")[0]);
                int max = Integer.parseInt(mask[i].split("-")[1]);
                // if (max > 255) max = 255;
                int ip = Integer.parseInt(ip_address[i]);
                if (ip < min || ip > max)
                    return false;
            }
            else
                return false;
        }
        return true;
    }

    public static void main(String[] args) {
        String ipPattern = "*,*.*.*.*,10.2.88.12,10.2.88.12-13,10.2.88.5-125,10.2.88.13-256"; //byte类型最大值(127)
        String ipStr = "10.2.88.12";
        for (String ip: ipPattern.split(",")) {
            System.out.print(ipStr + " in " + ip + " ?\t");
            System.out.println(checkIPMatching(ip, ipStr));
        }
    }
}

 

参考链接：

• https://stackoverflow.com/questions/577363/does-anyone-know-a-java-component-to-check-if-ip-address-is-from-particular-netw
• https://stackoverflow.com/questions/17853063/how-can-i-detect-if-an-ip-is-in-a-network
• https://stackoverflow.com/questions/2942299/converting-cidr-address-to-subnet-mask-and-network-address
• https://coderwall.com/p/iginpq/validating-subnet-and-cidr-format-in-java
• 检查IP和区间范围匹配
• 纯Java实现的IP子网计算器

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