Java获取当前操作系统的信息实例代码

主流有几种方法，一种是用下面的函数

publicstaticStringgetProperty(Stringkey)

一种是用命令行来获取

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();
}
}

来源：http://blog.csdn.net/u013007900/article/details/50428943