java判断IP地址类型，以及判断是否属于同一网段

函数与提取：
public static boolean isSameAddress(String resourceIp, String requestIp)；判断是否属于同一网段，默认子网掩码
public static boolean isSameAddress(String resourceIp, String requestIp, String subnetMask)；判断是否属于同一网段，指定子网掩码
public static String getIpType(String ip)；判断IP地址类型A、B、C类

package com.laiwei.stream.util;

import com.laiwei.framework.exception.RuleIllegalArgumentException;
import org.junit.Test;

public class IpV4Util {

	public static final String DEFAULT_SUBNET_MASK_A = "255.0.0.0";
	public static final String DEFAULT_SUBNET_MASK_B = "255.255.0.0";
	public static final String DEFAULT_SUBNET_MASK_C = "255.255.255.0";
	public static final String TYPE_IP_A = "A";
	public static final String TYPE_IP_B = "B";
	public static final String TYPE_IP_C = "C";
	public static final String TYPE_IP_D = "D";
	public static final String TYPE_IP_LOCATE = "locate";
	//	@Test
	//	public void test() {
	//		System.out.println(isSameAddress("192.168.1.1", "192.168.1.5", DEFAULT_SUBNET_MASK_C));
	//
	//	}
		@Test
		public void test() {
			String ip_a="127.0.01.15";
			String ip_c="192.168.1.1";
			String binaryIp = getBinaryIp("192.168.1.1");
			System.out.println(getIpType(ip_a));

		}
		//判断ip是否属于同一网段，默认子网掩码
	public static boolean isSameAddress(String resourceIp, String requestIp) {
		if (getIpType(resourceIp).equals(getIpType(requestIp))){
			return isSameAddress(resourceIp,requestIp,getIpDefaultMask(getIpType(resourceIp)));
		}
		return false;
	}
	//通过ip类型，获取默认IP子网掩码
	private static String getIpDefaultMask(String ipType){
			switch (ipType){
				case TYPE_IP_A:return DEFAULT_SUBNET_MASK_A;
				case TYPE_IP_B:return DEFAULT_SUBNET_MASK_B;
				case TYPE_IP_C:return DEFAULT_SUBNET_MASK_C;
				default:throw new RuleIllegalArgumentException("没有对应的mask地址");
			}
	}
		//判断ip是否属于同一网段
	public static boolean isSameAddress(String resourceIp, String requestIp, String subnetMask) {
		String resourceAddr = getAddrIp(resourceIp, subnetMask);
		String subnetMaskAddr = getAddrIp(requestIp, subnetMask);
		if (resourceAddr.equals(subnetMaskAddr)) {
			return true;
		}
		return false;
	}
	//获取ip的二进制字符串
	private static String getBinaryIp(String data) {
		String[] datas = data.split("\\.");
		String binaryIp = "";
		for (String ipStr : datas) {
			long signIp = Long.parseLong(ipStr);
			String binary = Long.toBinaryString(signIp);
			long binaryInt = Long.parseLong(binary);
			binaryIp += String.format("%08d", binaryInt);
		}
		return binaryIp;
	}
	//获取ip的地址位
	private static String getAddrIp(String ip, String subnetMask) {
		StringBuilder addrIp = new StringBuilder();
		String binaryIp = getBinaryIp(ip);
		String binarySubnetMask = getBinaryIp(subnetMask);
		for (int i = 0; i < 32; i++) {
			byte ipByte = Byte.parseByte(String.valueOf(binaryIp.charAt(i)));
			byte subnetMaskByte = Byte.parseByte(String.valueOf(binarySubnetMask.charAt(i)));
			addrIp.append(ipByte & subnetMaskByte);
		}
		return addrIp.toString();
	}
		//获取ip是什么类型，ABCD
	public static String getIpType(String ip) {
		String binaryIp = getBinaryIp(ip);
		System.out.println(binaryIp);
		if (ip.startsWith("127")){
			return TYPE_IP_LOCATE;
		}
		if (binaryIp.startsWith("0")){
			return TYPE_IP_A;
		}
		if (binaryIp.startsWith("10")){
			return TYPE_IP_B;
		}
		if (binaryIp.startsWith("110")){
			return TYPE_IP_C;
		}
		if (binaryIp.startsWith("1110")){
			return TYPE_IP_D;
		}
		throw new RuleIllegalArgumentException("无效ip异常");
	}
}