java ip地址池计算_[置顶] IP地址，子网掩码，地址池计算

╰半橙微兮° 2022-11-07 14:56 263阅读 0赞

package com.metarnet.util;

public class IPPoolUtil \{

public static void main(String\[\] args)

System.out.println(getNetMask("255.255.255.0"));

System.out.println(getPoolMax(getNetMask("255.255.255.128")));

System.out.println(getEndIP("10.229.0.1",24).getStartIP());

System.out.println(getEndIP("10.229.0.1",24).getEndIP());

/\*\*

\* 根据起始IP地址和子网掩码计算终止IP

\*/

public static Nets getEndIP(String StartIP,int netmask)

return getEndIP(StartIP,getMask(netmask));

/\*\*

\* 根据起始IP地址和子网掩码计算终止IP

\*/

public static Nets getEndIP(String StartIP,String netmask)

Nets nets = new Nets();

String\[\] start=Negation(StartIP,netmask).split("\\\\.");

nets.setStartIP(start\[0\]+"."+start\[1\]+"."+start\[2\]+"."+(Integer.valueOf(start\[3\])+1));

nets.setEndIP(TaskOR(Negation(StartIP,netmask),netmask));

nets.setNetMask(netmask);

return nets;

/\*\*

\* 根据掩码位计算掩码

\*/

public static String getMask(int masks)

if(masks == 1)

return "128.0.0.0";

else if(masks == 2)

return "192.0.0.0";

else if(masks == 3)

return "224.0.0.0";

else if(masks == 4)

return "240.0.0.0";

else if(masks == 5)

return "248.0.0.0";

else if(masks == 6)

return "252.0.0.0";

else if(masks == 7)

return "254.0.0.0";

else if(masks == 8)

return "255.0.0.0";

else if(masks ==9)

return "255.128.0.0";

else if(masks == 10)

return "255.192.0.0";

else if(masks == 11)

return "255.224.0.0";

else if(masks == 12)

return "255.240.0.0";

else if(masks == 13)

return "255.248.0.0";

else if(masks == 14)

return "255.252.0.0";

else if(masks == 15)

return "255.254.0.0";

else if(masks == 16)

return "255.255.0.0";

else if(masks == 17)

return "255.255.128.0";

else if(masks == 18)

return "255.255.192.0";

else if(masks == 19)

return "255.255.224.0";

else if(masks == 20)

return "255.255.240.0";

else if(masks == 21)

return "255.255.248.0";

else if(masks == 22)

return "255.255.252.0";

else if(masks == 23)

return "255.255.254.0";

else if(masks == 24)

return "255.255.255.0";

else if(masks == 25)

return "255.255.255.128";

else if(masks == 26)

return "255.255.255.192";

else if(masks == 27)

return "255.255.255.224";

else if(masks == 28)

return "255.255.255.240";

else if(masks == 29)

return "255.255.255.248";

else if(masks == 30)

return "255.255.255.252";

else if(masks == 31)

return "255.255.255.254";

else if(masks == 32)

return "255.255.255.255";

return "";

/\*\*

\* temp1根据temp2取反

\*/

private static String Negation(String StartIP,String netmask)

String\[\] temp1=StartIP.trim().split("\\\\.");

String\[\] temp2=netmask.trim().split("\\\\.");

int\[\] rets=new int\[4\];

for (int i =0;i<4;i++) \{

rets\[i\]=Integer.parseInt(temp1\[i\])&Integer.parseInt(temp2\[i\]);

return rets\[0\]+"."+rets\[1\]+"."+rets\[2\]+"."+rets\[3\];

/\*\*

\* temp1根据temp2取或

\*/

private static String TaskOR(String StartIP,String netmask)

String\[\] temp1=StartIP.trim().split("\\\\.");

String\[\] temp2=netmask.trim().split("\\\\.");

int\[\] rets=new int\[4\];

for (int i =0;i<4;i++) \{

rets\[i\]=255-(Integer.parseInt(temp1\[i\])^Integer.parseInt(temp2\[i\]));

return rets\[0\]+"."+rets\[1\]+"."+rets\[2\]+"."+(rets\[3\]-1);

/\*\*

\* 计算子网大小

\*/

public static int getPoolMax(int netmask)

if(netmask<=0||netmask>=32)

return 0;

int bits=32-netmask;

return (int) Math.pow(2,bits) -2;

/\*\*

\* 转换为验码位数

\*/

public static int getNetMask(String netmarks)

StringBuffer sbf;

String str;

int inetmask=0,count=0;

String\[\] ipList=netmarks.split("\\\\.");

for(int n=0;n

sbf = toBin(Integer.parseInt(ipList\[n\]));

str=sbf.reverse().toString();

count=0;

for(int i=0;i

i=str.indexOf('1',i);

if(i==-1)\{break;\}

count++;

inetmask+=count;

return inetmask;

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;

class Nets \{

private String StartIP;

private String EndIP;

private String NetMask;

public String getStartIP() \{

return StartIP;

public void setStartIP(String startIP) \{

StartIP = startIP;

public String getEndIP() \{

return EndIP;

public void setEndIP(String endIP) \{

EndIP = endIP;

public String getNetMask() \{

return NetMask;

public void setNetMask(String netMask) \{

NetMask = netMask;

java ip地址池计算_[置顶] IP地址，子网掩码，地址池计算

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