JAVA獲取計算機的IP、名稱、操作系統等信息

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 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 getComputer {

      //通過截取cmd流方式得到計算機的配置信息(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();
         //讀取進程輸出值
         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"));//獲取用戶名
         System.out.println(map.get("COMPUTERNAME"));//獲取計算機名
         System.out.println(map.get("USERDOMAIN"));//獲取計算機域名
     }
     //得到計算機的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();
         }
     }
     //得到計算機的ip,名稱,操作系統名稱,操作系統版本
     public static void Config(){
         try{
             InetAddress addr = InetAddress.getLocalHost();
             String ip=addr.getHostAddress().toString(); //獲取本機ip
             String hostName=addr.getHostName().toString(); //獲取本機計算機名稱
             System.out.println("本機IP："+ip+"\n本機名稱:"+hostName);
             Properties props=System.getProperties();
             System.out.println("操作系統的名稱："+props.getProperty("os.name"));
             System.out.println("操作系統的版本："+props.getProperty("os.version"));
         }catch(Exception e){
             e.printStackTrace();
         }
     }
     //java環境
     public static void all(){
         Properties props=System.getProperties();
         System.out.println("Java的運行環境版本："+props.getProperty("java.version"));
         System.out.println("Java的運行環境供應商："+props.getProperty("java.vendor"));
         System.out.println("Java供應商的URL："+props.getProperty("java.vendor.url"));
         System.out.println("Java的安裝路徑："+props.getProperty("java.home"));
         System.out.println("Java的虛擬機規范版本："+props.getProperty("java.vm.specification.version"));
         System.out.println("Java的虛擬機規范供應商："+props.getProperty("java.vm.specification.vendor"));
         System.out.println("Java的虛擬機規范名稱："+props.getProperty("java.vm.specification.name"));
         System.out.println("Java的虛擬機實現版本："+props.getProperty("java.vm.version"));
         System.out.println("Java的虛擬機實現供應商："+props.getProperty("java.vm.vendor"));
         System.out.println("Java的虛擬機實現名稱："+props.getProperty("java.vm.name"));
         System.out.println("Java運行時環境規范版本："+props.getProperty("java.specification.version"));
         System.out.println("Java運行時環境規范供應商："+props.getProperty("java.specification.vender"));
         System.out.println("Java運行時環境規范名稱："+props.getProperty("java.specification.name"));
         System.out.println("Java的類格式版本號："+props.getProperty("java.class.version"));
         System.out.println("Java的類路徑："+props.getProperty("java.class.path"));
         System.out.println("加載庫時搜索的路徑列表："+props.getProperty("java.library.path"));
         System.out.println("默認的臨時文件路徑："+props.getProperty("java.io.tmpdir"));
         System.out.println("一個或多個擴展目錄的路徑："+props.getProperty("java.ext.dirs"));
         System.out.println("操作系統的名稱："+props.getProperty("os.name"));
         System.out.println("操作系統的構架："+props.getProperty("os.arch"));
         System.out.println("操作系統的版本："+props.getProperty("os.version"));
         System.out.println("文件分隔符："+props.getProperty("file.separator"));//在 unix 系統中是＂／＂ System.out.println("路徑分隔符："+props.getProperty("path.separator"));//在 unix 系統中是＂:＂ System.out.println("行分隔符："+props.getProperty("line.separator"));//在 unix 系統中是＂/n＂ System.out.println("用戶的賬戶名稱："+props.getProperty("user.name"));
         System.out.println("用戶的主目錄："+props.getProperty("user.home"));
         System.out.println("用戶的當前工作目錄："+props.getProperty("user.dir"));
     }
     public static void main(String[] args) {
         all();
     }

 }