關於Java獲取系統信息

本文部分轉載自: http://www.cnblogs.com/wuhenke/archive/2011/11/19/2255400.html

我總結的相關類似博客:http://www.cnblogs.com/DreamDrive/p/5760140.html

 一 .獲取系統相關參數

  java 通過System.getProperties()獲取系統參數

  Properties props=System.getProperties(); //系統屬性

public class SystemInfo {
    public static void main(String[] args) {
        Properties sysProperty=System.getProperties(); //系統屬性
        Set<Object> keySet = sysProperty.keySet();
        for (Object object : keySet) {
            String property = sysProperty.getProperty(object.toString());
            System.out.println(object.toString()+" : "+property);
        }
    }
}

漢語英語一一對應

public class SystemInfo {
    public static void main(String[] args) {
       System.out.println("Java的運行環境版本："+sysProperty.getProperty("java.version"));
       System.out.println("Java的運行環境供應商："+sysProperty.getProperty("java.vendor"));
       System.out.println("Java供應商的URL："+sysProperty.getProperty("java.vendor.url"));
       System.out.println("Java的安裝路徑："+sysProperty.getProperty("java.home"));
       System.out.println("Java的虛擬機規范版本："+sysProperty.getProperty("java.vm.specification.version"));
       System.out.println("Java的虛擬機規范供應商："+sysProperty.getProperty("java.vm.specification.vendor"));
       System.out.println("Java的虛擬機規范名稱："+sysProperty.getProperty("java.vm.specification.name"));
       System.out.println("Java的虛擬機實現版本："+sysProperty.getProperty("java.vm.version"));
       System.out.println("Java的虛擬機實現供應商："+sysProperty.getProperty("java.vm.vendor"));
       System.out.println("Java的虛擬機實現名稱："+sysProperty.getProperty("java.vm.name"));
       System.out.println("Java運行時環境規范版本："+sysProperty.getProperty("java.specification.version"));
       System.out.println("Java運行時環境規范供應商："+sysProperty.getProperty("java.specification.vender"));
       System.out.println("Java運行時環境規范名稱："+sysProperty.getProperty("java.specification.name"));
       System.out.println("Java的類格式版本號："+sysProperty.getProperty("java.class.version"));
       System.out.println("Java的類路徑："+sysProperty.getProperty("java.class.path"));
       System.out.println("加載庫時搜索的路徑列表："+sysProperty.getProperty("java.library.path"));
       System.out.println("默認的臨時文件路徑："+sysProperty.getProperty("java.io.tmpdir"));
       System.out.println("一個或多個擴展目錄的路徑："+sysProperty.getProperty("java.ext.dirs"));
       System.out.println("操作系統的名稱："+sysProperty.getProperty("os.name"));
       System.out.println("操作系統的構架："+sysProperty.getProperty("os.arch"));
       System.out.println("操作系統的版本："+sysProperty.getProperty("os.version"));
       System.out.println("文件分隔符："+sysProperty.getProperty("file.separator"));   //在 unix 系統中是＂／＂
       System.out.println("路徑分隔符："+sysProperty.getProperty("path.separator"));   //在 unix 系統中是＂:＂
       System.out.println("行分隔符："+sysProperty.getProperty("line.separator"));   //在 unix 系統中是＂/n＂
       System.out.println("用戶的賬戶名稱："+sysProperty.getProperty("user.name"));
       System.out.println("用戶的主目錄："+sysProperty.getProperty("user.home"));
       System.out.println("用戶的當前工作目錄："+sysProperty.getProperty("user.dir"));
    }
}

 二、獲取系統環境變量

　　Map<String, String> getenv = System.getenv();

        Map<String, String> getenv = System.getenv();
        System.out.println(getenv);

 輸出:

{USERPROFILE=C:\Users\kongxiaohan, 
ProgramData=C:\ProgramData, 
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC, 
windows_tracing_logfile=C:\BVTBin\Tests\installpackage\csilogfile.log, 
JAVA_HOME=C:\Program Files\Java\jdk1.7.0_65, 
MAVEN_HOME=D:\apache-maven-3.0.5, windows_tracing_flags=3, 
TEMP=C:\Users\KONGXI~1\AppData\Local\Temp, 
SystemDrive=C:, ProgramFiles=C:\Program Files, 
Path=C:/Program Files/Java/jdk1.7.0_65/bin/../jre/bin/client;
C:/Program Files/Java/jdk1.7.0_65/bin/../jre/bin;
C:/Program Files/Java/jdk1.7.0_65/bin/../jre/lib/i386;
C:\Program Files\NVIDIA Corporation\PhysX\Common;
C:\Program Files\Java\jdk1.7.0_65\bin;
C:\Windows\system32;C:\Windows;
C:\Windows\System32\Wbem;
C:\Windows\System32\WindowsPowerShell\v1.0\;
C:\Program Files\EmEditor;
D:\Program Files\MySQL\MySQL Server 5.5\bin;
D:\Program Files\Subversion\bin;
D:\Program Files\TortoiseSVN\bin;
D:\ITCAST\java\day72_NoSql系列之mongoDB數據庫\mongodb-win32-i386-2.4.3\bin;
E:\insta;tclient_12_1;
D:\apache-maven-3.0.5\bin;
C:\Program Files\VanDyke Software\Clients\;
G:\eclipse;, HOMEDRIVE=C:, PROCESSOR_REVISION=2502, USERDOMAIN=PC-ACER, ALLUSERSPROFILE=C:\ProgramData, VBOX_INSTALL_PATH=C:\Program Files\Oracle\VirtualBox\, PROCESSOR_IDENTIFIER=x86 Family 6 Model 37 Stepping 2, GenuineIntel, SESSIONNAME=Console, TMP=C:\Users\KONGXI~1\AppData\Local\Temp, CommonProgramFiles=C:\Program Files\Common Files, =::=::\, LOGONSERVER=\\PC-ACER, PROCESSOR_ARCHITECTURE=x86, FP_NO_HOST_CHECK=NO, OS=Windows_NT, HOMEPATH=\Users\kongxiaohan, PROCESSOR_LEVEL=6, APR_ICONV_PATH=D:\Program Files\Subversion\iconv, LOCALAPPDATA=C:\Users\kongxiaohan\AppData\Local, COMPUTERNAME=PC-ACER, windir=C:\Windows, SystemRoot=C:\Windows, NUMBER_OF_PROCESSORS=4, USERNAME=kongxiaohan, PUBLIC=C:\Users\Public, PSModulePath=C:\Windows\system32\WindowsPowerShell\v1.0\Modules\, NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK, LANG=zh_CN, ComSpec=C:\Windows\system32\cmd.exe, APPDATA=C:\Users\kongxiaohan\AppData\Roaming}

三、獲取IP、 計算機名、MAC、 硬盤卷序號

SystemInfo.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Properties;

/**
 * 獲取當前系統信息
 */
public class SystemInfo {
    // 當前實例
    private static SystemInfo currentSystem = null;
    private InetAddress localHost = null;

    private SystemInfo() {
        try {
            localHost = InetAddress.getLocalHost();
        } catch (UnknownHostException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    /**
     * 單例模式獲取對象
     * 
     * @return
     */
    public static SystemInfo getInstance() {
        if (currentSystem == null)
            currentSystem = new SystemInfo();
        return currentSystem;
    }

    /**
     * 本地IP
     * 
     * @return IP地址
     */
    public String getIP() {
        String ip = localHost.getHostAddress();
        return ip;
    }

    /**
     * 獲取用戶機器名稱
     * 
     * @return
     */
    public String getHostName() {
        return localHost.getHostName();
    }

    /**
     * 獲取C盤卷 序列號
     * 
     * @return
     */
    public String getDiskNumber() {
        String line = "";
        String HdSerial = "";// 記錄硬盤序列號

        try {

            Process proces = Runtime.getRuntime().exec("cmd /c dir c:");// 獲取命令行參數
            BufferedReader buffreader = new BufferedReader(
                    new InputStreamReader(proces.getInputStream()));

            while ((line = buffreader.readLine()) != null) {

                if (line.indexOf("卷的序列號是 ") != -1) { // 讀取參數並獲取硬盤序列號

                    HdSerial = line.substring(line.indexOf("卷的序列號是 ")
                            + "卷的序列號是 ".length(), line.length());
                    break;
                }
            }

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return HdSerial;
    }

    /**
     * 獲取Mac地址
     * 
     * @return Mac地址，例如：F0-4D-A2-39-24-A6
     */
    public String getMac() {
        NetworkInterface byInetAddress;
        try {
            byInetAddress = NetworkInterface.getByInetAddress(localHost);
            byte[] hardwareAddress = byInetAddress.getHardwareAddress();
            return getMacFromBytes(hardwareAddress);
        } catch (SocketException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 獲取當前系統名稱
     * 
     * @return 當前系統名，例如： windows xp
     */
    public String getSystemName() {
        Properties sysProperty = System.getProperties();
        // 系統名稱
        String systemName = sysProperty.getProperty("os.name");
        return systemName;
    }

    private String getMacFromBytes(byte[] bytes) {
        StringBuffer mac = new StringBuffer();
        byte currentByte;
        boolean first = false;
        for (byte b : bytes) {
            if (first) {
                mac.append("-");
            }
            currentByte = (byte) ((b & 240) >> 4);
            mac.append(Integer.toHexString(currentByte));
            currentByte = (byte) (b & 15);
            mac.append(Integer.toHexString(currentByte));
            first = true;
        }
        return mac.toString().toUpperCase();
    }
}

SystemInfoTest.java

public class SystemInfoTest {
    public static void main(String[] args) {
        SystemInfo syso = SystemInfo.getInstance();
        System.out.println("IP地址:"+syso.getIP());
        System.out.println("主機名稱:"+syso.getHostName());
        System.out.println("獲取C盤卷 序列號"+syso.getDiskNumber());
        System.out.println("Mac地址"+syso.getMac());
        System.out.println("獲取當前系統名稱"+syso. getSystemName());
    }
}

 輸出結果:

IP地址:169.254.247.195
主機名稱:pc-acer
獲取C盤卷 序列號A0E7-407C
Mac地址08-00-27-00-90-35
獲取當前系統名稱Windows 7

//================================================================================

關於獲取文件編碼相關的屬性值:

import java.nio.charset.Charset;

public class GetDefaultCharset {
    public static void main(String[] args) {
        // 獲取系統默認編碼
        System.out.println(System.getProperty("file.encoding"));

        // 獲取系統默認的字符編碼
        System.out.println(Charset.defaultCharset());

        // 獲取系統默認語言
        System.out.println(System.getProperty("user.language"));

        // 獲取系統屬性列表
         System.getProperties().list(System.out);

        // 設置編碼
         System.getProperties().put("file.encoding", "GBK");
    }
}