Java获取当前操作系统的信息实例代码

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.ArrayList;
import java.util.Formatter;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
public class test {
	//通过截取cmd流方式得到计算机的配置信息(不好)
	public static List<String> getIpAddress() {
		Process p = null;
		List<String> address = new ArrayList<String>();
		try {
			p = new ProcessBuilder("ipconfig","/all").start();
		}
		catch (Exception e) {
			return address;
		}
		StringBuffer sb = new StringBuffer();
		//读取进程输出值
		InputStream inputStream = p.getInputStream();
		BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
		String s = "";
		try {
			while ((s = br.readLine()) != null) {
				sb.append(s + "n");
			}
		}
		catch (Exception e) {
			e.printStackTrace();
		}
		finally {
			try {
				inputStream.close();
			}
			catch (Exception e) {
				e.printStackTrace();
			}
		}
		System.out.println(sb);
		return address;
	}
	public static void getIpconfig() {
		Map<String,String> map = System.getenv();
		System.out.println(map.get("USERNAME"));
		//获取用户名
		System.out.println(map.get("COMPUTERNAME"));
		//获取计算机名
		System.out.println(map.get("USERDOMAIN"));
		//获取计算机域名
	}
	//得到计算机的ip地址和mac地址
	public static void getConfig() {
		try {
			InetAddress address = InetAddress.getLocalHost();
			NetworkInterface ni = NetworkInterface.getByInetAddress(address);
			//ni.getInetAddresses().nextElement().getAddress();
			byte[] mac = ni.getHardwareAddress();
			String sIP = address.getHostAddress();
			String sMAC = "";
			Formatter formatter = new Formatter();
			for (int i = 0; i < mac.length; i++) {
				sMAC = formatter.format(Locale.getDefault(),"%02X%s",mac[i],(i < mac.length - 1) ? "-" : "").toString();
			}
			System.out.println("IP：" + sIP);
			System.out.println("MAC：" + sMAC);
		}
		catch (Exception e) {
			e.printStackTrace();
		}
	}
	//得到计算机的ip,名称,操作系统名称,操作系统版本
	public static void Config() {
		try {
			InetAddress addr = InetAddress.getLocalHost();
			String ip = addr.getHostAddress().toString();
			//获取本机ip
			String hostName = addr.getHostName().toString();
			//获取本机计算机名称
			System.out.println("本机IP：" + ip + "n本机名称:" + hostName);
			Properties props = System.getProperties();
			System.out.println("操作系统的名称：" + props.getProperty("os.name"));
			System.out.println("操作系统的版本：" + props.getProperty("os.version"));
		}
		catch (Exception e) {
			e.printStackTrace();
		}
	}
	//其它的一些东西,会有用到的时候的
	public static void all() {
		Properties props = System.getProperties();
		System.out.println("Java的运行环境版本：" + props.getProperty("java.version"));
		System.out.println("Java的运行环境供应商：" + props.getProperty("java.vendor"));
		System.out.println("Java供应商的URL：" + props.getProperty("java.vendor.url"));
		System.out.println("Java的安装路径：" + props.getProperty("java.home"));
		System.out.println("Java的虚拟机规范版本：" + props.getProperty("java.vm.specification.version"));
		System.out.println("Java的虚拟机规范供应商：" + props.getProperty("java.vm.specification.vendor"));
		System.out.println("Java的虚拟机规范名称：" + props.getProperty("java.vm.specification.name"));
		System.out.println("Java的虚拟机实现版本：" + props.getProperty("java.vm.version"));
		System.out.println("Java的虚拟机实现供应商：" + props.getProperty("java.vm.vendor"));
		System.out.println("Java的虚拟机实现名称：" + props.getProperty("java.vm.name"));
		System.out.println("Java运行时环境规范版本：" + props.getProperty("java.specification.version"));
		System.out.println("Java运行时环境规范供应商：" + props.getProperty("java.specification.vender"));
		System.out.println("Java运行时环境规范名称：" + props.getProperty("java.specification.name"));
		System.out.println("Java的类格式版本号：" + props.getProperty("java.class.version"));
		System.out.println("Java的类路径：" + props.getProperty("java.class.path"));
		System.out.println("加载库时搜索的路径列表：" + props.getProperty("java.library.path"));
		System.out.println("默认的临时文件路径：" + props.getProperty("java.io.tmpdir"));
		System.out.println("一个或多个扩展目录的路径：" + props.getProperty("java.ext.dirs"));
		System.out.println("操作系统的名称：" + props.getProperty("os.name"));
		System.out.println("操作系统的构架：" + props.getProperty("os.arch"));
		System.out.println("操作系统的版本：" + props.getProperty("os.version"));
		System.out.println("文件分隔符：" + props.getProperty("file.separator"));
		//在 unix 系统中是＂／＂
		System.out.println("路径分隔符：" + props.getProperty("path.separator"));
		//在 unix 系统中是＂:＂
		System.out.println("行分隔符：" + props.getProperty("line.separator"));
		//在 unix 系统中是＂/n＂
		System.out.println("用户的账户名称：" + props.getProperty("user.name"));
		System.out.println("用户的主目录：" + props.getProperty("user.home"));
		System.out.println("用户的当前工作目录：" + props.getProperty("user.dir"));
	}
	public static void main(String[] args) {
		getConfig();
		Config();
		all();
	}
}