Java调取底层命令获取主机名（localhostName）

最新推荐文章于 2025-03-31 09:30:00 发布

joneandvictory

最新推荐文章于 2025-03-31 09:30:00 发布

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本文链接：https://blog.youkuaiyun.com/joneandvictory/article/details/49025703

本文提供了一段使用Java实现获取本机主机名和非默认IP地址的代码示例，包括主机名获取和IP地址查找流程。

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.UnknownHostException;
import java.util.Enumeration;

import com.comisys.gudong.logging.Logger;

public class RuntimeEnvUtil {

/**
* @author fsl
* @return
*/
//获取本机的主机名
public static String getHostNameM(){
if(logger.isDebugEnabled()){
logger.debug("debug getHostName begin");
}
String name =getHostName();
logger.debug("host name:"+name);

if("localhost".equals(name)){
return getServerIp();
}
if(logger.isDebugEnabled()){
logger.debug("debug getHostName end");
}
return name;

}

public static String getHostName(){
try {
Process p = Runtime.getRuntime().exec("hostname");
BufferedInputStream in = new BufferedInputStream(p.getInputStream());
BufferedReader br = new BufferedReader(new InputStreamReader(in));

String line=null;
//只需要取出第一行
if((line=br.readLine())!=null)
{
return line;
}

br.close();
p.destroy();
return line;

} catch (IOException e) {
if(logger.isErrorEnabled()){
logger.error("IOException", e);
}
}

return null;
}
//获取本地的非127.0.0.1的ip地址
public static String getServerIp(){
String SERVER_IP=null;
try {
Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
InetAddress ip = null;

while (netInterfaces.hasMoreElements()) {
boolean flag = false;
NetworkInterface ni = (NetworkInterface) netInterfaces
.nextElement();
//判断接口名字中不包含：的
//System.out.println(ni.getName()+"-----");
logger.debug(ni.getName()+"-----");
if(!ni.getName().contains(":")){
Enumeration<InetAddress> inetAddresses = ni.getInetAddresses();
while (inetAddresses.hasMoreElements()) {
ip = inetAddresses.nextElement();
//!ip.isSiteLocalAddress() 判断信息是否源自本机的ip
if (!ip.isLoopbackAddress()&& ip.getHostAddress().indexOf(":") == -1) {
SERVER_IP = ip.getHostAddress();
flag = true;
break;
} else {
ip = null;
}
}
}

if(flag){
break;
}
}
} catch (Exception e) {
logger.error("unknown host",e);
}
return SERVER_IP;
}
}