代碼如下：
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;
public class Test {
@SuppressWarnings("unchecked")
public static void main(String[] args) {
System.out.println("系統環境如下：");
Map<String, String> map = System.getenv();
Set<Entry<String, String>> set = map.entrySet();
Iterator<Entry<String, String>> iter = set.iterator();
while (iter.hasNext()) {
Entry<String, String> ent = iter.next();
System.out.println(ent.getKey() + "\n ->" + ent.getValue());
}
System.out.println("------------分割線------------------");
System.out.println("Java屬性如下：");
Properties p = System.getProperties();
Enumeration<String> enu = (Enumeration<String>) p.propertyNames();
while (enu.hasMoreElements()) {
String s = enu.nextElement();
System.out.println(s + "\n ->" + System.getProperty(s));
}
}
}
我的輸出如下：
系統環境如下：
LOCALAPPDATA
->C:\Users\zz\AppData\Local
PROCESSOR_LEVEL
->6
FP_NO_HOST_CHECK
->NO
USERDOMAIN
->zz-PC
LOGONSERVER
->\\ZZ-PC
SESSIONNAME
->Console
ALLUSERSPROFILE
->C:\ProgramData
PROCESSOR_ARCHITECTURE
->AMD64
PSModulePath
->C:\Windows\system32\WindowsPowerShell\v1.0\Modules\
SystemDrive
->C:
APPDATA
->C:\Users\zz\AppData\Roaming
USERNAME
->zz
windows_tracing_logfile
->C:\BVTBin\Tests\installpackage\csilogfile.log
ProgramFiles(x86)
->C:\Program Files (x86)
CommonProgramFiles
->C:\Program Files\Common Files
Path
->C:/Program Files/Java/jre1.8.0_102/bin/server;C:/Program Files/Java/jre1.8.0_102/bin;C:/Program Files/Java/jre1.8.0_102/lib/amd64;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\MySoft\mysql-5.7.15-winx64\bin;C:\Program Files\Calibre2\;D:\MySoft\eclipse;
PATHEXT
->.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
OS
->Windows_NT
windows_tracing_flags
->3
COMPUTERNAME
->ZZ-PC
PROCESSOR_REVISION
->2a07
CommonProgramW6432
->C:\Program Files\Common Files
ComSpec
->C:\Windows\system32\cmd.exe
ProgramData
->C:\ProgramData
ProgramW6432
->C:\Program Files
HOMEPATH
->\Users\zz
SystemRoot
->C:\Windows
TEMP
->C:\Users\zz\AppData\Local\Temp
MYSQL_HOME
->D:\MySoft\mysql-5.7.15-winx64
HOMEDRIVE
->C:
PROCESSOR_IDENTIFIER
->Intel64 Family 6 Model 42 Stepping 7, GenuineIntel
USERPROFILE
->C:\Users\zz
TMP
->C:\Users\zz\AppData\Local\Temp
CommonProgramFiles(x86)
->C:\Program Files (x86)\Common Files
ProgramFiles
->C:\Program Files
PUBLIC
->C:\Users\Public
NUMBER_OF_PROCESSORS
->4
windir
->C:\Windows
=::
->::\
------------分割線------------------
Java屬性如下：
java.runtime.name
->Java(TM) SE Runtime Environment
sun.boot.library.path
->C:\Program Files\Java\jre1.8.0_102\bin
java.vm.version
->25.102-b14
java.vm.vendor
->Oracle Corporation
java.vendor.url
->http://java.oracle.com/
path.separator
->;
java.vm.name
->Java HotSpot(TM) 64-Bit Server VM
file.encoding.pkg
->sun.io
user.script
->
user.country
->CN
sun.java.launcher
->SUN_STANDARD
sun.os.patch.level
->Service Pack 1
java.vm.specification.name
->Java Virtual Machine Specification
user.dir
->D:\MySoft\WorkSpace\EMProject
java.runtime.version
->1.8.0_102-b14
java.awt.graphicsenv
->sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs
->C:\Program Files\Java\jre1.8.0_102\lib\endorsed
os.arch
->amd64
java.io.tmpdir
->C:\Users\zz\AppData\Local\Temp\
line.separator
->
java.vm.specification.vendor
->Oracle Corporation
user.variant
->
os.name
->Windows 7
sun.jnu.encoding
->GBK
java.library.path
->C:\Program Files\Java\jre1.8.0_102\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre1.8.0_102/bin/server;C:/Program Files/Java/jre1.8.0_102/bin;C:/Program Files/Java/jre1.8.0_102/lib/amd64;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\MySoft\mysql-5.7.15-winx64\bin;C:\Program Files\Calibre2\;D:\MySoft\eclipse;;.
java.specification.name
->Java Platform API Specification
java.class.version
->52.0
sun.management.compiler
->HotSpot 64-Bit Tiered Compilers
os.version
->6.1
user.home
->C:\Users\zz
user.timezone
->
java.awt.printerjob
->sun.awt.windows.WPrinterJob
file.encoding
->UTF-8
java.specification.version
->1.8
user.name
->zz
java.class.path
->D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\classes;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\SmartUpload.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\commons-beanutils-1.7.0.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\commons-collections-3.2.1.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\commons-httpclient-3.1.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\commons-lang-2.3.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\commons-logging-1.1.1.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\ezmorph-1.0.3.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\filters-2.0.235.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\javax.servlet.jsp.jstl.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\json-lib-2.2.3-jdk15.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\jsp-api.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\jstl-impl-1.2.2.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\kaptcha-0.0.9.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\mysql-connector-java-5.0.4-bin.jar;D:\MySoft\WorkSpace\EMProject\WebContent\WEB-INF\lib\servlet-api.jar
java.vm.specification.version
->1.8
sun.arch.data.model
->64
java.home
->C:\Program Files\Java\jre1.8.0_102
sun.java.command
->test.Test
java.specification.vendor
->Oracle Corporation
user.language
->zh
awt.toolkit
->sun.awt.windows.WToolkit
java.vm.info
->mixed mode
java.version
->1.8.0_102
java.ext.dirs
->C:\Program Files\Java\jre1.8.0_102\lib\ext;C:\Windows\Sun\Java\lib\ext
sun.boot.class.path
->C:\Program Files\Java\jre1.8.0_102\lib\resources.jar;C:\Program Files\Java\jre1.8.0_102\lib\rt.jar;C:\Program Files\Java\jre1.8.0_102\lib\sunrsasign.jar;C:\Program Files\Java\jre1.8.0_102\lib\jsse.jar;C:\Program Files\Java\jre1.8.0_102\lib\jce.jar;C:\Program Files\Java\jre1.8.0_102\lib\charsets.jar;C:\Program Files\Java\jre1.8.0_102\lib\jfr.jar;C:\Program Files\Java\jre1.8.0_102\classes
java.vendor
->Oracle Corporation
file.separator
->\
java.vendor.url.bug
->http://bugreport.sun.com/bugreport/
sun.cpu.endian
->little
sun.io.unicode.encoding
->UnicodeLittle
sun.desktop
->windows
sun.cpu.isalist
->amd64
簡化代碼：
System.getProperties().list(System.out);
Object[] str = System.getenv().keySet().toArray();
for(Object s:str){
String temp = (String) s;
System.out.println(temp+"="+System.getenv(temp));
}
