关于Java获取系统信息

本文部分转载自: http://www.cnblogs.com/wuhenke/archive/2011/11/19/2255400.html

我总结的相关类似博客:http://www.cnblogs.com/DreamDrive/p/5760140.html

一 .获取系统相关参数

java 通过System.getProperties()获取系统参数

Properties props=System.getProperties(); //系统属性

 1 public class SystemInfo {
 2     public static void main(String[] args) {
 3         Properties sysProperty=System.getProperties(); //系统属性
 4         Set<Object> keySet = sysProperty.keySet();
 5         for (Object object : keySet) {
 6             String property = sysProperty.getProperty(object.toString());
 7             System.out.println(object.toString()+" : "+property);
 8         }
 9     }
10 }

汉语英语一一对应

 1 public class SystemInfo {
 2     public static void main(String[] args) {
 3        System.out.println("Java的运行环境版本："+sysProperty.getProperty("java.version"));
 4        System.out.println("Java的运行环境供应商："+sysProperty.getProperty("java.vendor"));
 5        System.out.println("Java供应商的URL："+sysProperty.getProperty("java.vendor.url"));
 6        System.out.println("Java的安装路径："+sysProperty.getProperty("java.home"));
 7        System.out.println("Java的虚拟机规范版本："+sysProperty.getProperty("java.vm.specification.version"));
 8        System.out.println("Java的虚拟机规范供应商："+sysProperty.getProperty("java.vm.specification.vendor"));
 9        System.out.println("Java的虚拟机规范名称："+sysProperty.getProperty("java.vm.specification.name"));
10        System.out.println("Java的虚拟机实现版本："+sysProperty.getProperty("java.vm.version"));
11        System.out.println("Java的虚拟机实现供应商："+sysProperty.getProperty("java.vm.vendor"));
12        System.out.println("Java的虚拟机实现名称："+sysProperty.getProperty("java.vm.name"));
13        System.out.println("Java运行时环境规范版本："+sysProperty.getProperty("java.specification.version"));
14        System.out.println("Java运行时环境规范供应商："+sysProperty.getProperty("java.specification.vender"));
15        System.out.println("Java运行时环境规范名称："+sysProperty.getProperty("java.specification.name"));
16        System.out.println("Java的类格式版本号："+sysProperty.getProperty("java.class.version"));
17        System.out.println("Java的类路径："+sysProperty.getProperty("java.class.path"));
18        System.out.println("加载库时搜索的路径列表："+sysProperty.getProperty("java.library.path"));
19        System.out.println("默认的临时文件路径："+sysProperty.getProperty("java.io.tmpdir"));
20        System.out.println("一个或多个扩展目录的路径："+sysProperty.getProperty("java.ext.dirs"));
21        System.out.println("操作系统的名称："+sysProperty.getProperty("os.name"));
22        System.out.println("操作系统的构架："+sysProperty.getProperty("os.arch"));
23        System.out.println("操作系统的版本："+sysProperty.getProperty("os.version"));
24        System.out.println("文件分隔符："+sysProperty.getProperty("file.separator"));   //在 unix 系统中是＂／＂
25        System.out.println("路径分隔符："+sysProperty.getProperty("path.separator"));   //在 unix 系统中是＂:＂
26        System.out.println("行分隔符："+sysProperty.getProperty("line.separator"));   //在 unix 系统中是＂/n＂
27        System.out.println("用户的账户名称："+sysProperty.getProperty("user.name"));
28        System.out.println("用户的主目录："+sysProperty.getProperty("user.home"));
29        System.out.println("用户的当前工作目录："+sysProperty.getProperty("user.dir"));
30     }
31 }

二、获取系统环境变量

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

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

输出:

{USERPROFILE=C:Userskongxiaohan, 
ProgramData=C:ProgramData, 
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC, 
windows_tracing_logfile=C:BVTBinTestsinstallpackagecsilogfile.log, 
JAVA_HOME=C:Program FilesJavajdk1.7.0_65, 
MAVEN_HOME=D:apache-maven-3.0.5, windows_tracing_flags=3, 
TEMP=C:UsersKONGXI~1AppDataLocalTemp, 
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 FilesNVIDIA CorporationPhysXCommon;
C:Program FilesJavajdk1.7.0_65in;
C:Windowssystem32;C:Windows;
C:WindowsSystem32Wbem;
C:WindowsSystem32WindowsPowerShellv1.0;
C:Program FilesEmEditor;
D:Program FilesMySQLMySQL Server 5.5in;
D:Program FilesSubversionin;
D:Program FilesTortoiseSVNin;
D:ITCASTjavaday72_NoSql系列之mongoDB数据库mongodb-win32-i386-2.4.3in;
E:insta;tclient_12_1;
D:apache-maven-3.0.5in;
C:Program FilesVanDyke SoftwareClients;
G:eclipse;, HOMEDRIVE=C:, PROCESSOR_REVISION=2502, USERDOMAIN=PC-ACER, ALLUSERSPROFILE=C:ProgramData, VBOX_INSTALL_PATH=C:Program FilesOracleVirtualBox\, PROCESSOR_IDENTIFIER=x86 Family 6 Model 37 Stepping 2, GenuineIntel, SESSIONNAME=Console, TMP=C:UsersKONGXI~1AppDataLocalTemp, CommonProgramFiles=C:Program FilesCommon Files, =::=::\, LOGONSERVER=\PC-ACER, PROCESSOR_ARCHITECTURE=x86, FP_NO_HOST_CHECK=NO, OS=Windows_NT, HOMEPATH=Userskongxiaohan, PROCESSOR_LEVEL=6, APR_ICONV_PATH=D:Program FilesSubversioniconv, LOCALAPPDATA=C:UserskongxiaohanAppDataLocal, COMPUTERNAME=PC-ACER, windir=C:Windows, SystemRoot=C:Windows, NUMBER_OF_PROCESSORS=4, USERNAME=kongxiaohan, PUBLIC=C:UsersPublic, PSModulePath=C:Windowssystem32WindowsPowerShellv1.0Modules\, NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK, LANG=zh_CN, ComSpec=C:Windowssystem32cmd.exe, APPDATA=C:UserskongxiaohanAppDataRoaming}

三、获取IP、计算机名、MAC、硬盘卷序号

SystemInfo.java

  1 import java.io.BufferedReader;
  2 import java.io.IOException;
  3 import java.io.InputStreamReader;
  4 import java.net.InetAddress;
  5 import java.net.NetworkInterface;
  6 import java.net.SocketException;
  7 import java.net.UnknownHostException;
  8 import java.util.Properties;
  9 
 10 /**
 11  * 获取当前系统信息
 12  */
 13 public class SystemInfo {
 14     // 当前实例
 15     private static SystemInfo currentSystem = null;
 16     private InetAddress localHost = null;
 17 
 18     private SystemInfo() {
 19         try {
 20             localHost = InetAddress.getLocalHost();
 21         } catch (UnknownHostException e) {
 22             // TODO Auto-generated catch block
 23             e.printStackTrace();
 24         }
 25     }
 26 
 27     /**
 28      * 单例模式获取对象
 29      * 
 30      * @return
 31      */
 32     public static SystemInfo getInstance() {
 33         if (currentSystem == null)
 34             currentSystem = new SystemInfo();
 35         return currentSystem;
 36     }
 37 
 38     /**
 39      * 本地IP
 40      * 
 41      * @return IP地址
 42      */
 43     public String getIP() {
 44         String ip = localHost.getHostAddress();
 45         return ip;
 46     }
 47 
 48     /**
 49      * 获取用户机器名称
 50      * 
 51      * @return
 52      */
 53     public String getHostName() {
 54         return localHost.getHostName();
 55     }
 56 
 57     /**
 58      * 获取C盘卷 序列号
 59      * 
 60      * @return
 61      */
 62     public String getDiskNumber() {
 63         String line = "";
 64         String HdSerial = "";// 记录硬盘序列号
 65 
 66         try {
 67 
 68             Process proces = Runtime.getRuntime().exec("cmd /c dir c:");// 获取命令行参数
 69             BufferedReader buffreader = new BufferedReader(
 70                     new InputStreamReader(proces.getInputStream()));
 71 
 72             while ((line = buffreader.readLine()) != null) {
 73 
 74                 if (line.indexOf("卷的序列号是 ") != -1) { // 读取参数并获取硬盘序列号
 75 
 76                     HdSerial = line.substring(line.indexOf("卷的序列号是 ")
 77                             + "卷的序列号是 ".length(), line.length());
 78                     break;
 79                 }
 80             }
 81 
 82         } catch (IOException e) {
 83             // TODO Auto-generated catch block
 84             e.printStackTrace();
 85         }
 86 
 87         return HdSerial;
 88     }
 89 
 90     /**
 91      * 获取Mac地址
 92      * 
 93      * @return Mac地址，例如：F0-4D-A2-39-24-A6
 94      */
 95     public String getMac() {
 96         NetworkInterface byInetAddress;
 97         try {
 98             byInetAddress = NetworkInterface.getByInetAddress(localHost);
 99             byte[] hardwareAddress = byInetAddress.getHardwareAddress();
100             return getMacFromBytes(hardwareAddress);
101         } catch (SocketException e) {
102             // TODO Auto-generated catch block
103             e.printStackTrace();
104         }
105         return null;
106     }
107 
108     /**
109      * 获取当前系统名称
110      * 
111      * @return 当前系统名，例如： windows xp
112      */
113     public String getSystemName() {
114         Properties sysProperty = System.getProperties();
115         // 系统名称
116         String systemName = sysProperty.getProperty("os.name");
117         return systemName;
118     }
119 
120     private String getMacFromBytes(byte[] bytes) {
121         StringBuffer mac = new StringBuffer();
122         byte currentByte;
123         boolean first = false;
124         for (byte b : bytes) {
125             if (first) {
126                 mac.append("-");
127             }
128             currentByte = (byte) ((b & 240) >> 4);
129             mac.append(Integer.toHexString(currentByte));
130             currentByte = (byte) (b & 15);
131             mac.append(Integer.toHexString(currentByte));
132             first = true;
133         }
134         return mac.toString().toUpperCase();
135     }
136 }

SystemInfoTest.java

 1 public class SystemInfoTest {
 2     public static void main(String[] args) {
 3         SystemInfo syso = SystemInfo.getInstance();
 4         System.out.println("IP地址:"+syso.getIP());
 5         System.out.println("主机名称:"+syso.getHostName());
 6         System.out.println("获取C盘卷 序列号"+syso.getDiskNumber());
 7         System.out.println("Mac地址"+syso.getMac());
 8         System.out.println("获取当前系统名称"+syso. getSystemName());
 9     }
10 }

输出结果:

IP地址:169.254.247.195
主机名称:pc-acer
获取C盘卷 序列号A0E7-407C
Mac地址08-00-27-00-90-35
获取当前系统名称Windows 7

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

关于获取文件编码相关的属性值:

 1 import java.nio.charset.Charset;
 2 
 3 public class GetDefaultCharset {
 4     public static void main(String[] args) {
 5         // 获取系统默认编码
 6         System.out.println(System.getProperty("file.encoding"));
 7 
 8         // 获取系统默认的字符编码
 9         System.out.println(Charset.defaultCharset());
10 
11         // 获取系统默认语言
12         System.out.println(System.getProperty("user.language"));
13 
14         // 获取系统属性列表
15          System.getProperties().list(System.out);
16 
17         // 设置编码
18          System.getProperties().put("file.encoding", "GBK");
19     }
20 }

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原文地址：https://www.cnblogs.com/DreamDrive/p/4289860.html