Java InetAddress to toIpAddrString(final InetAddress addr)

Description

toIpAddrString

License

Open Source License

Parameter

Parameter	Description
addr	IP address

Return

a object.

Declaration

public static String toIpAddrString(final InetAddress addr) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * This file is part of OpenNMS(R)./*from w w w .ja  v  a2 s  .co m*/
 *
 * Copyright (C) 2007-2012 The OpenNMS Group, Inc.
 * OpenNMS(R) is Copyright (C) 1999-2012 The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * OpenNMS(R) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenNMS(R).  If not, see:
 *      http://www.gnu.org/licenses/
 *
 * For more information contact:
 *     OpenNMS(R) Licensing <license@opennms.org>
 *     http://www.opennms.org/
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 *******************************************************************************/

import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;

public class Main {
    /**
     * <p>toIpAddrString</p>
     *
     * @param addr IP address
     * @return a {@link java.lang.String} object.
     */
    public static String toIpAddrString(final InetAddress addr) {
        if (addr == null) {
            throw new IllegalArgumentException("Cannot convert null InetAddress to a string");
        } else {
            final byte[] address = addr.getAddress();
            if (address == null) {
                // This case can occur when Jersey uses Spring bean classes which use
                // CGLIB bytecode manipulation to generate InetAddress classes. This will
                // occur during REST calls. {@see org.opennms.web.rest.NodeRestServiceTest}
                //
                throw new IllegalArgumentException(
                        "InetAddress instance violates contract by returning a null address from getAddress()");
            } else if (addr instanceof Inet4Address) {
                return toIpAddrString(address);
            } else if (addr instanceof Inet6Address) {
                final Inet6Address addr6 = (Inet6Address) addr;
                final StringBuilder sb = new StringBuilder(toIpAddrString(address));
                if (addr6.getScopeId() != 0) {
                    sb.append("%").append(addr6.getScopeId());
                }
                return sb.toString();
            } else {
                throw new IllegalArgumentException("Unknown type of InetAddress: " + addr.getClass().getName());
            }
        }
    }

    /**
     * <p>toIpAddrString</p>
     *
     * @param addr an array of byte.
     * @return a {@link java.lang.String} object.
     */
    public static String toIpAddrString(final byte[] addr) {
        if (addr.length == 4) {
            return getInetAddress(addr).getHostAddress();
        } else if (addr.length == 16) {
            return String.format("%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x", addr[0],
                    addr[1], addr[2], addr[3], addr[4], addr[5], addr[6], addr[7], addr[8], addr[9], addr[10],
                    addr[11], addr[12], addr[13], addr[14], addr[15]).intern();
        } else {
            throw new IllegalArgumentException("IP address has an illegal number of bytes: " + addr.length);
        }
    }

    /**
     * <p>getInetAddress</p>
     *
     * @param ipAddrOctets an array of byte.
     * @return a {@link java.net.InetAddress} object.
     */
    public static InetAddress getInetAddress(final int[] octets, final int offset, final int length) {
        final byte[] addressBytes = new byte[length];
        for (int i = 0; i < addressBytes.length; i++) {
            addressBytes[i] = Integer.valueOf(octets[i + offset]).byteValue();
        }
        return getInetAddress(addressBytes);
    }

    /**
     * <p>getInetAddress</p>
     *
     * @param ipAddrOctets an array of byte.
     * @return a {@link java.net.InetAddress} object.
     */
    public static InetAddress getInetAddress(final byte[] ipAddrOctets) {
        try {
            return InetAddress.getByAddress(ipAddrOctets);
        } catch (final UnknownHostException e) {
            throw new IllegalArgumentException(
                    "Invalid IPAddress " + ipAddrOctets + " with length " + ipAddrOctets.length);
        }

    }

    /**
     * <p>getInetAddress</p>
     *
     * @param dottedNotation a {@link java.lang.String} object.
     * @return a {@link java.net.InetAddress} object.
     */
    public static InetAddress getInetAddress(final String dottedNotation) {
        try {
            return InetAddress.getByName(dottedNotation);
        } catch (final UnknownHostException e) {
            throw new IllegalArgumentException("Invalid IPAddress " + dottedNotation);
        }
    }
}

Related

1. str(InetAddress address)
2. toAddressString(InetAddress ip)
3. toAddrString(InetAddress ip)
4. toDotString(InetAddress ip)
5. toIntArray(InetAddress addr)
6. toLong(InetAddress addr)
7. toLong(InetAddress ip)