Java 常用系统变量

String userHome = System.getProperty("user.home");  //用户主目录
String userDir = System.getProperty("user.dir");    //用户当前工作目录
String userName = System.getProperty("user.name");  //当前用户名称
String lineSeparator = System.getProperty("line.separator");//系统换行符
String pathSeparator = System.getProperty("path.separator"); //
String  fileSeparator= System.getProperty("file.separator");//路径分割符号
String osVersion = System.getProperty("os.version"); //当前系统版本
String osArch = System.getProperty("os.arch"); //系统架构
String osName = System.getProperty("os.name"); //系统名称
String  javaIoTmpdir = System.getProperty("java.io.tmpdir"); //系统临时文件目录

System.out.println("userHome:"+userHome);
System.out.println("userDir:"+userDir);
System.out.println("userName:"+userName);
System.out.println("lineSeparator:"+lineSeparator);
System.out.println("pathSeparator:"+pathSeparator);
System.out.println("fileSeparator:"+fileSeparator);
System.out.println("osVersion:"+osVersion);
System.out.println("osArch:"+osArch);
System.out.println("os.name:"+osName);
System.out.println("javaIoTmpdir:"+javaIoTmpdir);

userHome:/Users/gg
userDir:/Users/gg/Downloads/java-spring-oidc-example
userName:gg
lineSeparator:

pathSeparator::
fileSeparator:/
osVersion:10.16
osArch:x86_64
os.name:Mac OS X
javaIoTmpdir:/var/folders/76/dx6jknd54q7fwtlqkcr1vrz00000gn/T/