标签:获取ip
在一个项目中如果你想获取系统的ip地址那么可能许多同学在想那是多么容易,但是如果在多种操作系统貌似就不那么简单了,下面看看怎么获取系统的ip地址的。
package easyway.tbs.commons; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.net.UnknownHostException; import java.util.Enumeration; import java.util.Properties; import org.apache.log4j.Logger; /** * * 本机系统信息 * @author longgangbai * */ public final class SystemHelper { private static final Logger logger = Logger.getLogger(SystemHelper.class); //获得系统属性集 public static Properties props=System.getProperties(); //操作系统名称 public static String OS_NAME=getPropertery("os.name"); //行分页符 public static String OS_LINE_SEPARATOR=getPropertery("line.separator"); //文件分隔符号 public static String OS_FILE_SEPARATOR=getPropertery("file.separator"); /** * * 根据系统的类型获取本服务器的ip地址 * * InetAddress inet = InetAddress.getLocalHost(); * 但是上述代码在Linux下返回127.0.0.1。 * 主要是在linux下返回的是/etc/hosts中配置的localhost的ip地址, * 而不是网卡的绑定地址。后来改用网卡的绑定地址,可以取到本机的ip地址:): * @throws UnknownHostException */ public static InetAddress getSystemLocalIp() throws UnknownHostException{ InetAddress inet=null; String osname=getSystemOSName(); try { //针对window系统 if(osname.equalsIgnoreCase("Windows XP")){ inet=getWinLocalIp(); //针对linux系统 }else if(osname.equalsIgnoreCase("Linux")){ inet=getUnixLocalIp(); } if(null==inet){ throw new UnknownHostException("主机的ip地址未知"); } }catch (SocketException e) { logger.error("获取本机ip错误"+e.getMessage()); throw new UnknownHostException("获取本机ip错误"+e.getMessage()); } return inet; } /** * 获取FTP的配置操作系统 * @return */ public static String getSystemOSName() { //获得系统属性集 Properties props=System.getProperties(); //操作系统名称 String osname=props.getProperty("os.name"); if(logger.isDebugEnabled()){ logger.info("the ftp client system os Name "+osname); } return osname; } /** * 获取属性的值 * @param propertyName * @return */ public static String getPropertery(String propertyName){ return props.getProperty(propertyName); } /** * 获取window 本地ip地址 * @return * @throws UnknownHostException */ private static InetAddress getWinLocalIp() throws UnknownHostException{ InetAddress inet = InetAddress.getLocalHost(); System.out.println("本机的ip=" + inet.getHostAddress()); return inet; } /** * * 可能多多个ip地址只获取一个ip地址 * 获取Linux 本地IP地址 * @return * @throws SocketException */ private static InetAddress getUnixLocalIp() throws SocketException{ Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces(); InetAddress ip = null; while(netInterfaces.hasMoreElements()) { NetworkInterface ni= (NetworkInterface)netInterfaces.nextElement(); ip=(InetAddress) ni.getInetAddresses().nextElement(); if( !ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":")==-1) { return ip; } else { ip=null; } } return null; } /** * * 获取当前运行程序的内存信息 * @return */ public static final String getRAMinfo() { Runtime rt = Runtime.getRuntime(); return "RAM: " + rt.totalMemory() + " bytes total, " + rt.freeMemory() + " bytes free."; } }
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标签:获取ip
原文地址:http://blog.csdn.net/taoshengyijiuzt/article/details/47295223