我们还可以访问哪些其他位置,如Java中的“user.dir”?

System.getProperties().entrySet().forEach(e -> {
        System.out.println(e.getKey() + " : " + e.getValue());
    });

Official Doc

Blog

您可以使用FileHandler

“%t”系统临时目录

https://kodejava.org/how-do-i-get-operating-system-temporary-directory-folder/

 public class TempDirExample {
     public static void main(String[] args) {
         // This is the property name for accessing OS temporary directory
         // or folder.
         String property = "java.io.tmpdir";

         // Get the temporary directory and print it.
         String tempDir = System.getProperty(property);
         System.out.println("OS temporary directory is " + tempDir);
     }
 }

也可以通过属性文件传入目录。