处理ip的工具类代码,Java代码库,德仔网

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【Java】处理ip的工具类
作者:库特 / 发布于2014/9/10/ 286

	package com.hh.test;
	
	import java.util.HashMap;
	import java.util.Map;
	
	import org.apache.commons.lang3.StringUtils;
	
	/**
	* IP工具类
	*
	* @author bl
	* @email kutekute00@gmail.com
	*
	*/
	public class IPUtils
	{
	
	 /**
	 * 把long类型的Ip转为一般Ip类型：xx.xx.xx.xx
	 *
	 * @param ip
	 * @return
	 */
	 public static String getIpFromLong(Long ip)
	 {
	 String s1 = String.valueOf((ip & 4278190080L) / 16777216L);
	 String s2 = String.valueOf((ip & 16711680L) / 65536L);
	 String s3 = String.valueOf((ip & 65280L) / 256L);
	 String s4 = String.valueOf(ip & 255L);
	 return s1 + "." + s2 + "." + s3 + "." + s4;
	 }
	
	 /**
	 * 把xx.xx.xx.xx类型的转为long类型的
	 *
	 * @param ip
	 * @return
	 */
	 public static Long getIpFromString(String ip)
	 {
	 Long ipLong = 0L;
	 String ipTemp = ip;
	 ipLong = ipLong * 256
	 + Long.parseLong(ipTemp.substring(0, ipTemp.indexOf(".")));
	 ipTemp = ipTemp.substring(ipTemp.indexOf(".") + 1, ipTemp.length());
	 ipLong = ipLong * 256
	 + Long.parseLong(ipTemp.substring(0, ipTemp.indexOf(".")));
	 ipTemp = ipTemp.substring(ipTemp.indexOf(".") + 1, ipTemp.length());
	 ipLong = ipLong * 256
	 + Long.parseLong(ipTemp.substring(0, ipTemp.indexOf(".")));
	 ipTemp = ipTemp.substring(ipTemp.indexOf(".") + 1, ipTemp.length());
	 ipLong = ipLong * 256 + Long.parseLong(ipTemp);
	 return ipLong;
	 }
	
	 /**
	 * 根据掩码位获取掩码
	 *
	 * @param maskBit
	 * 掩码位数，如"28"、"30"
	 * @return
	 */
	 public static String getMaskByMaskBit(String maskBit)
	 {
	 return StringUtils.isEmpty(maskBit) ? "error, maskBit is null !"
	 : maskBitMap().get(maskBit);
	 }
	
	 /**
	 * 根据 ip/掩码位 计算IP段的起始IP 如 IP串 218.240.38.69/30
	 *
	 * @param ip
	 * 给定的IP，如218.240.38.69
	 * @param maskBit
	 * 给定的掩码位，如30
	 * @return 起始IP的字符串表示
	 */
	 public static String getBeginIpStr(String ip, String maskBit)
	 {
	 return getIpFromLong(getBeginIpLong(ip, maskBit));
	 }
	
	 /**
	 * 根据 ip/掩码位 计算IP段的起始IP 如 IP串 218.240.38.69/30
	 *
	 * @param ip
	 * 给定的IP，如218.240.38.69
	 * @param maskBit
	 * 给定的掩码位，如30
	 * @return 起始IP的长整型表示
	 */
	 public static Long getBeginIpLong(String ip, String maskBit)
	 {
	 return getIpFromString(ip) & getIpFromString(getMaskByMaskBit(maskBit));
	 }
	
	 /**
	 * 根据 ip/掩码位 计算IP段的终止IP 如 IP串 218.240.38.69/30
	 *
	 * @param ip
	 * 给定的IP，如218.240.38.69
	 * @param maskBit
	 * 给定的掩码位，如30
	 * @return 终止IP的字符串表示
	 */
	 public static String getEndIpStr(String ip, String maskBit)
	 {
	 return getIpFromLong(getEndIpLong(ip, maskBit));
	 }
	
	 /**
	 * 根据 ip/掩码位 计算IP段的终止IP 如 IP串 218.240.38.69/30
	 *
	 * @param ip
	 * 给定的IP，如218.240.38.69
	 * @param maskBit
	 * 给定的掩码位，如30
	 * @return 终止IP的长整型表示
	 */
	 public static Long getEndIpLong(String ip, String maskBit)
	 {
	 return getBeginIpLong(ip, maskBit)
	 + ~getIpFromString(getMaskByMaskBit(maskBit));
	 }
	
	 /**
	 * 根据子网掩码转换为掩码位 如 255.255.255.252转换为掩码位 为 30
	 *
	 * @param netmarks
	 * @return
	 */
	 public static int getNetMask(String netmarks)
	 {
	 StringBuffer sbf;
	 String str;
	 int inetmask = 0, count = 0;
	 String[] ipList = netmarks.split("\\.");
	 for (int n = 0; n < ipList.length; n++)
	 {
	 sbf = toBin(Integer.parseInt(ipList[n]));
	 str = sbf.reverse().toString();
	 count = 0;
	 for (int i = 0; i < str.length(); i++)
	 {
	 i = str.indexOf('1', i);
	 if (i == -1)
	 {
	 break;
	 }
	 count++;
	 }
	 inetmask += count;
	 }
	 return inetmask;
	 }
	
	 /**
	 * 计算子网大小
	 *
	 * @param netmask
	 * 掩码位
	 * @return
	 */
	 public static int getPoolMax(int maskBit)
	 {
	 if (maskBit <= 0 || maskBit >= 32)
	 {
	 return 0;
	 }
	 return (int) Math.pow(2, 32 - maskBit) - 2;
	 }
	
	 private static StringBuffer toBin(int x)
	 {
	 StringBuffer result = new StringBuffer();
	 result.append(x % 2);
	 x /= 2;
	 while (x > 0)
	 {
	 result.append(x % 2);
	 x /= 2;
	 }
	 return result;
	 }
	
	 /*
	 * 存储着所有的掩码位及对应的掩码 key:掩码位 value:掩码（x.x.x.x）
	 */
	 private static Map<String, String> maskBitMap()
	 {
	 Map<String, String> maskBit = new HashMap<String, String>();
	 maskBit.put("1", "128.0.0.0");
	 maskBit.put("2", "192.0.0.0");
	 maskBit.put("3", "224.0.0.0");
	 maskBit.put("4", "240.0.0.0");
	 maskBit.put("5", "248.0.0.0");
	 maskBit.put("6", "252.0.0.0");
	 maskBit.put("7", "254.0.0.0");
	 maskBit.put("8", "255.0.0.0");
	 maskBit.put("9", "255.128.0.0");
	 maskBit.put("10", "255.192.0.0");
	 maskBit.put("11", "255.224.0.0");
	 maskBit.put("12", "255.240.0.0");
	 maskBit.put("13", "255.248.0.0");
	 maskBit.put("14", "255.252.0.0");
	 maskBit.put("15", "255.254.0.0");
	 maskBit.put("16", "255.255.0.0");
	 maskBit.put("17", "255.255.128.0");
	 maskBit.put("18", "255.255.192.0");
	 maskBit.put("19", "255.255.224.0");
	 maskBit.put("20", "255.255.240.0");
	 maskBit.put("21", "255.255.248.0");
	 maskBit.put("22", "255.255.252.0");
	 maskBit.put("23", "255.255.254.0");
	 maskBit.put("24", "255.255.255.0");
	 maskBit.put("25", "255.255.255.128");
	 maskBit.put("26", "255.255.255.192");
	 maskBit.put("27", "255.255.255.224");
	 maskBit.put("28", "255.255.255.240");
	 maskBit.put("29", "255.255.255.248");
	 maskBit.put("30", "255.255.255.252");
	 maskBit.put("31", "255.255.255.254");
	 maskBit.put("32", "255.255.255.255");
	 return maskBit;
	 }
	
	 /**
	 * 根据掩码位获取掩码
	 *
	 * @param masks
	 * @return
	 */
	 @Deprecated
	 public static String getMaskByMaskBit(int masks)
	 {
	 String ret = "";
	 if (masks == 1)
	 ret = "128.0.0.0";
	 else if (masks == 2)
	 ret = "192.0.0.0";
	 else if (masks == 3)
	 ret = "224.0.0.0";
	 else if (masks == 4)
	 ret = "240.0.0.0";
	 else if (masks == 5)
	 ret = "248.0.0.0";
	 else if (masks == 6)
	 ret = "252.0.0.0";
	 else if (masks == 7)
	 ret = "254.0.0.0";
	 else if (masks == 8)
	 ret = "255.0.0.0";
	 else if (masks == 9)
	 ret = "255.128.0.0";
	 else if (masks == 10)
	 ret = "255.192.0.0";
	 else if (masks == 11)
	 ret = "255.224.0.0";
	 else if (masks == 12)
	 ret = "255.240.0.0";
	 else if (masks == 13)
	 ret = "255.248.0.0";
	 else if (masks == 14)
	 ret = "255.252.0.0";
	 else if (masks == 15)
	 ret = "255.254.0.0";
	 else if (masks == 16)
	 ret = "255.255.0.0";
	 else if (masks == 17)
	 ret = "255.255.128.0";
	 else if (masks == 18)
	 ret = "255.255.192.0";
	 else if (masks == 19)
	 ret = "255.255.224.0";
	 else if (masks == 20)
	 ret = "255.255.240.0";
	 else if (masks == 21)
	 ret = "255.255.248.0";
	 else if (masks == 22)
	 ret = "255.255.252.0";
	 else if (masks == 23)
	 ret = "255.255.254.0";
	 else if (masks == 24)
	 ret = "255.255.255.0";
	 else if (masks == 25)
	 ret = "255.255.255.128";
	 else if (masks == 26)
	 ret = "255.255.255.192";
	 else if (masks == 27)
	 ret = "255.255.255.224";
	 else if (masks == 28)
	 ret = "255.255.255.240";
	 else if (masks == 29)
	 ret = "255.255.255.248";
	 else if (masks == 30)
	 ret = "255.255.255.252";
	 else if (masks == 31)
	 ret = "255.255.255.254";
	 else if (masks == 32)
	 ret = "255.255.255.255";
	 return ret;
	 }
	
	}
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