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 程式師世界 >> 編程語言 >> JAVA編程 >> 關於JAVA >> Java基本之java處置ip的對象類

Java基本之java處置ip的對象類

編輯:關於JAVA

Java基本之java處置ip的對象類。本站提示廣大學習愛好者:(Java基本之java處置ip的對象類)文章只能為提供參考,不一定能成為您想要的結果。以下是Java基本之java處置ip的對象類正文


java處置ip的對象類,包含把long類型的Ip轉為普通Ip類型、把xx.xx.xx.xx類型的轉為long類型、依據掩碼位獲得掩碼、依據 ip/掩碼位 盤算IP段的肇端IP、依據 ip/掩碼位 盤算IP段的終止IP等辦法,可以直接應用!


package com.hh.test;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
/**
* IP對象類
*
* @author bl
* @email [email protected]
*
*/
public class IPUtils
{
    /**
     * 把long類型的Ip轉為普通Ip類型: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類型的轉為long類型的
     *
     * @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;
    }
    /**
     * 依據掩碼位獲得掩碼
     *
     * @param maskBit
     *            掩碼位數,如"28"、"30"
     * @return
     */
    public static String getMaskByMaskBit(String maskBit)
    {
        return StringUtils.isEmpty(maskBit) ? "error, maskBit is null !"
                : maskBitMap().get(maskBit);
    }
    /**
     * 依據 ip/掩碼位 盤算IP段的肇端IP 如 IP串 218.240.38.69/30
     *
     * @param ip
     *            給定的IP,如218.240.38.69
     * @param maskBit
     *            給定的掩碼位,如30
     * @return 肇端IP的字符串表現
     */
    public static String getBeginIpStr(String ip, String maskBit)
    {
        return getIpFromLong(getBeginIpLong(ip, maskBit));
    }
    /**
     * 依據 ip/掩碼位 盤算IP段的肇端IP 如 IP串 218.240.38.69/30
     *
     * @param ip
     *            給定的IP,如218.240.38.69
     * @param maskBit
     *            給定的掩碼位,如30
     * @return 肇端IP的長整型表現
     */
    public static Long getBeginIpLong(String ip, String maskBit)
    {
        return getIpFromString(ip) & getIpFromString(getMaskByMaskBit(maskBit));
    }
    /**
     * 依據 ip/掩碼位 盤算IP段的終止IP 如 IP串 218.240.38.69/30
     *
     * @param ip
     *            給定的IP,如218.240.38.69
     * @param maskBit
     *            給定的掩碼位,如30
     * @return 終止IP的字符串表現
     */
    public static String getEndIpStr(String ip, String maskBit)
    {
        return getIpFromLong(getEndIpLong(ip, maskBit));
    }
    /**
     * 依據 ip/掩碼位 盤算IP段的終止IP 如 IP串 218.240.38.69/30
     *
     * @param ip
     *            給定的IP,如218.240.38.69
     * @param maskBit
     *            給定的掩碼位,如30
     * @return 終止IP的長整型表現
     */
    public static Long getEndIpLong(String ip, String maskBit)
    {
        return getBeginIpLong(ip, maskBit)
                + ~getIpFromString(getMaskByMaskBit(maskBit));
    }
    /**
     * 依據子網掩碼轉換為掩碼位 如 255.255.255.252轉換為掩碼位 為 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;
    }
    /**
     * 盤算子網年夜小
     *
     * @param netmask
     *            掩碼位
     * @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;
    }
    /*
     * 存儲著一切的掩碼位及對應的掩碼 key:掩碼位 value:掩碼(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;
    }
    /**
     * 依據掩碼位獲得掩碼
     *
     * @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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