java 比较某个IP是否在某段IP区间之间

import java.net.InetAddress;

import java.net.UnknownHostException;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.junit.BeforeClass;

import org.junit.Test;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class Tests {

protected Logger log = LoggerFactory.getLogger(this.getClass());

@BeforeClass

public static void setUpBeforeClass() throws Exception {

}

@Test

public void IPRangeCheck(){

log.info(">>>>>>>>>>"+isValidRange("192.168.4.1","192.168.45.112","192.168.42.25"));

}

/**

* 判断是否在之间

* @param ipStart 开始IP

* @param ipEnd
结束IP

* @param ipToCheck
需要比较IP

* @return

*/

public boolean isValidRange(String ipStart,String ipEnd,String ipToCheck){

try {

long ipLo = ipTolong(InetAddress.getByName(ipStart));

long ipHi = ipTolong(InetAddress.getByName(ipEnd));

long ipcheck = ipTolong(InetAddress.getByName(ipToCheck));

return (ipcheck >ipLo && ipcheck < ipHi);

} catch (UnknownHostException e) {

e.printStackTrace();

return false;

}

}

public long ipTolong(InetAddress ip){

long result = 0;

byte[] ipAdds=ip.getAddress();

for (byte b : ipAdds) {

result <<= 8;

result |= b&0xff;

}

return result;

}

}