Java 如果获取本机信息 如本机操作系统 IP MAC... - Java / Java...

Map<String, String> map = System.getenv();
  String userName = map.get("USERNAME");// 获取用户名
  String computerName = map.get("COMPUTERNAME");// 获取计算机名
  String userDomain = map.get("USERDOMAIN");// 获取计算机域名
  System.out.println(userName);
  System.out.println(computerName);
  System.out.println(userDomain);

 

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import java.util.*;  
 
public class YourJavaProperties {  
    public static void main(String args[]){  
        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"));  
    }  
} 


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IP地址可以取到，Mac不能直接取到，必须使用JNI或者调用外部命令

Java code

Enumeration en = NetworkInterface.getNetworkInterfaces();
Set ipList = new HashSet();
while (en.hasMoreElements()) {
NetworkInterface intf = (NetworkInterface)en.nextElement();
Enumeration enAddr = intf.getInetAddresses();
while (enAddr.hasMoreElements()) {
InetAddress addr = (InetAddress) enAddr.nextElement();
ipList.add(addr.getHostAddress());
}
}
 
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也可以通过cmd命令 然后io输出得到 如果是Vista系统 要把那个36改改 我记得好像是改成48还是多少   

Java code 

import  java.io.InputStreamReader;
import  java.io.BufferedReader;
public  class  macaddress  {
public  static  void  main(String[]  args)  {
macaddress  mdd  =  new  macaddress();
String  str=mdd.getMacOnWindow();
System.out.println(str);
}
private  static  String  getMacOnWindow()  {
String  s  =  "";
try  {
String  s1  =  "ipconfig  /all";
Process  process  =  Runtime.getRuntime().exec(s1);
BufferedReader  bufferedreader  =  new  BufferedReader(
new  InputStreamReader(process.getInputStream()));
String  nextLine;
for  (String  line  =  bufferedreader.readLine();  line  !=  null;  line  =  nextLine)  {
nextLine  =  bufferedreader.readLine();
if  (line.indexOf("Physical  Address")  <=  0)  {
continue;
}
int  i  =  line.indexOf("Physical  Address")  +  36;
s  =  line.substring(i);
break;
}
bufferedreader.close();
process.waitFor();
}  catch  (Exception  exception)  {
s  =  "";
}
return  s.trim();
}
}


 
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import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Formatter;
import java.util.Locale;
public class IPMACMain {
public static void main(String[] args) throws Exception {
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);
}
}



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来自  ： http://topic.csdn.net/u/20090910/09/8c20f4d3-10c0-480d-8866-2b9c0d938902.html