Intelligent method of obtaining local IP in Netty project to improve code portability

/** * Copyright (C) 2015 Raxtone * * @className:com.test.ip.IPUtils * @description:智能判断windows&linux平台获取外网ip和局域网ip工具类 * 注：window 获取外网IP是通过一个外部网站http://www.ip138.com/ip2city.asp * linux环境还需要额外的test.sh脚本(并且路径和本工具类一致) * @version:v1.0.0 * @author:yunqigao * * Modification History: * Date Author Version Description * ----------------------------------------------------------------- * 2015-3-28 yunqigao v1.0.0 create * * */ import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.LineNumberReader; import java.net.InetAddress; import java.net.URL; import java.net.UnknownHostException; public class IPUtils { private static String OS_NAME = null; /** * 查询本机外网IP网站 */ private static final String getWebIP = "http://www.ip138.com/ip2city.asp"; /** * 默认值 */ private static String IP = "未知"; static { System.out.println("初始化获取系统名称..."); OS_NAME = System.getProperty("os.name"); } public static String getIP(int queryFlag) { if (queryFlag == 1) { // 查询外网IP switch (IPUtils.getOsType()) { case 1: IP = IPUtils.getWinOuterIP(); break; case 2: IP = IPUtils.getLinuxIP(queryFlag); break; default: break; } } else { // 查询内网IP switch (IPUtils.getOsType()) { case 1: IP = IPUtils.getWinInnerIP(); break; case 2: IP = IPUtils.getLinuxIP(queryFlag); break; default: break; } } return IP; } /** * 获取window平台下外网IP * * @return IP */ private static String getWinOuterIP() { try { URL url = new URL(getWebIP); BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream())); String s = ""; StringBuffer sb = new StringBuffer(""); String webContent = ""; while ((s = br.readLine()) != null) { //System.err.println("---"+s); sb.append(s + "rn"); } br.close(); webContent = sb.toString(); int start = webContent.indexOf("[") + 1; int end = webContent.indexOf("]"); webContent = webContent.substring(start, end); return webContent; } catch (Exception e) { //e.printStackTrace(); System.err.println("获取外网IP网站访问失败！"); return IP; } } /** * 获取window平台下内网IP * * @return IP */ private static String getWinInnerIP() { InetAddress[] inetAdds; try { inetAdds = InetAddress.getAllByName(InetAddress.getLocalHost() .getHostName()); } catch (UnknownHostException e) { e.printStackTrace(); return IP; } return inetAdds[0].getHostAddress(); } /** * 获取linux下的IP * @param queryFlag * 1表示查询外网IP 2表示查询内网IP * @return IP * @throws IOException */ private static String getLinuxIP(int queryFlag) { LineNumberReader input = null; String pathString = IPUtils.class.getResource("/").getPath(); //类的路径 //System.out.println(pathString); Process process=null; String line = ""; try { Runtime.getRuntime().exec("dos2unix "+pathString+"test.sh"); process = Runtime.getRuntime().exec("sh "+pathString+"test.sh "+(queryFlag==1?"1":"2")); InputStreamReader ir = new InputStreamReader(process.getInputStream()); input = new LineNumberReader(ir); if((line = input.readLine()) != null) { IP = line; } } catch (IOException e) { e.printStackTrace(); System.err.println("linux下获取IP失败!"); } //System.out.println("exec shell result:ip====>" + IP); return IP; } /** * 目前只支持window和linux两种平台 * * @return 1 window 2 linux -1:未知 */ public static int getOsType() { // 将获取到的系统类型名称转为全部小写 OS_NAME = OS_NAME.toLowerCase(); if (OS_NAME.startsWith("win")) { return 1; } if (OS_NAME.startsWith("linux")) { return 2; } return -1; } /** * 测试方法 * * @param args * @throws IOException */ public static void main(String[] args) throws IOException { System.out.println("操作系统为："+SystemOperate.fromCode(IPUtils.getOsType()+"")); System.out.println("内网IP为："+IPUtils.getIP(2)); System.out.println("外网IP为："+IPUtils.getIP(1)); } }

/** * Copyright (C) 2015 Raxtone * * * @className:.SystemOperate * @description:TODO * * @version:v1.0.0 * @author:yunqigao * * Modification History: * Date Author Version Description * ----------------------------------------------------------------- * 2015-3-28 yunqigao v1.0.0 create * * */ import java.util.Map; import java.util.HashMap; /** * 操作系统名称枚举 * 目前只有windows 和 linux系统 * @author Relieved * */ enum SystemOperate{ WINDOWS(1,"windows系统"),LINUX(2,"linux系统"),UNKNOWN(3,"未知系统"); private int operateType; private String operateName; private SystemOperate(int operateType, String operateName) { this.operateType = operateType; this.operateName = operateName; } public int getOperateType() { return operateType; } public void setOperateType(int operateType) { this.operateType = operateType; } public String getOperateName() { return operateName; } public void setOperateName(String operateName) { this.operateName = operateName; } private static final Map lookup = new HashMap(); static { for (SystemOperate cp : values()) { lookup.put(cp.getOperateType()+"", cp); } } public static String fromCode(String code) { return lookup.get(code).operateName; } }

#!/bin/sh #Copyright (C) 2015 Raxtone #2015-3-28  #author:yunqigao  # Get OS name OS=`uname` IP="" # store IP function getIp(){ if [ $1 == "1" ];then #echo "outer"; case $OS in Linux) IP=`curl ifconfig.me`;; #FreeBSD|OpenBSD) IP=`ifconfig| grep -E 'inet.[0-9]' | grep -v '127.0.0.1' | awk '{ print $2}'` ;; #SunOS) IP=`ifconfig -a | grep inet | grep -v '127.0.0.1' | awk '{ print $2} '` ;; *) IP="Unknown";; esac else #echo "inner"; case $OS in Linux) IP=`ifconfig| grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'`;; *) IP="Unknown";; esac fi echo "$IP"; } getIp $1;

局域网IP为： IPUtils.getIP(2)); 外网IP为： IPUtils.getIP(1));