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Contents
  1. 1. Introduction
  2. 2. 相关知识
  3. 3. 解决方法

Introduction

用代码获取tomcat server的ip和端口号，注意这不是servlet中用request请求的客户端的ip地址。是代码运行所在的tomcat的真实ip地址。

相关知识

本代码只是写出了获取端口号和局域网ip地址的方法，若想取出真实ip地址，可以利用InetAddress类提供的接口进行判断！顺便贴下找到的关于IP地址段的知识。

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Unicast
? AnyLocalAddress: 0.0.0.0
? LinkLocalAddress: 169.254.0.0 – 169.254.255.255
? LoopbackAddress: 127.0.0.0 – 127.255.255.255
? SiteLocalAddress: 10.0.0.0 – 10.255.255.255, 172.16.0.0 – 172.31.255.255, 192.168.0.0 – 192.168.255.255
– Multicast: 224.0.0.0 – 239.255.255.255
? MulticastGlobal: 224.0.1.0 – 238.255.255.255
? MulticastLinkLocal: 224.0.0.0 – 224.0.0.255 and ttl = 1
? MulticastNodeLocal: never, unless ttl = 0
? MulticastOrgLocal: 239.192.0.0 – 229.195.255.255
? MulticastSiteLocal: 239.255.0.0 – 239.255.255.255 or ttl < 32

解决方法

下面记录写出的工具类

java
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package com.business.common.util;

import java.lang.management.ManagementFactory;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Set;
 
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.Query;
 
import org.apache.commons.lang.StringUtils;
 
public class IPAddressAndPortUtils {
    private static final Log LOG = Log.getLog(IPAddressAndPortUtils.class);
     
    public static String getTomcatPort() {
        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        Set<ObjectName> objs = null;
        try {
            objs = mbs.queryNames(new ObjectName("*:type=Connector,*"),
                    Query.match(Query.attr("protocol"), Query.value("HTTP/1.1")));
        } catch (MalformedObjectNameException e) {
            LOG.error("A MalformedObjectNameException is invoked.", e);
        } catch (NullPointerException e) {
            LOG.error("A NullPointerException is invoked.", e);
        }
        LOG.debug("Objs size : {}", objs.size());
         
        String port = null;
        for (Iterator<ObjectName> i = objs.iterator(); i.hasNext(); ) {
            ObjectName obj = i.next();
            port = obj.getKeyProperty("port");
             
            if (StringUtils.isNotBlank(port)) {
                return port;
            }
        }
         
        return port;
    }
     
    public static String getServerSiteLocalAddress() {
        Enumeration<NetworkInterface> networkInterfaces = null;
        try {
            networkInterfaces = NetworkInterface.getNetworkInterfaces();
        } catch (SocketException e) {
            LOG.error("A SocketException is invoked.", e);
        }
        String tomcatIp = null;
        while (networkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = (NetworkInterface) networkInterfaces.nextElement();
            Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
             
            while (inetAddresses.hasMoreElements()) {
                InetAddress inetAddress = (InetAddress) inetAddresses.nextElement();
                 
                if (inetAddress.isSiteLocalAddress()) {
                    tomcatIp = inetAddress.getHostAddress();
                    LOG.debug("Web server ip : {}.", tomcatIp);
                    break;
                }
            }
        }
         
        return tomcatIp;
    }
 
}
Contents
  1. 1. Introduction
  2. 2. 相关知识
  3. 3. 解决方法