常用java路径
System.out.println(LmsFEMain.class .getClassLoader().getResource("" )); //file:/E:/workspace/FEServer/bin/System.out.println(ClassLoader.getSystemResource("" ));//file:/E:/workspace/FEServer/bin/System.out.println(LmsFEMain.class.getResource("" ));//file:/E:/workspace/FEServer/bin/org/sklssl/lms/main/System.out.println(LmsFEMain.class.getResource("/" ));//file:/E:/workspace/FEServer/bin/System.out.println(new File("/" ).getAbsolutePath());//E:\
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