Java路径类问题总结

一.获取路径：

单独的Java类中获得绝对路径根据java.io.File的Doc文挡，可知: 默认情况下new File("/")代表的目录为：System.getProperty("user.dir")。
 一下程序获得执行类的当前路径:

System.out.println("1:" + Test2.class.getResource(""));
System.out.println("2:" + Test2.class.getClassLoader().getResource(""));
System.out.println("3:" + Test2.class.getClassLoader().getResource("").getPath());
System.out.println("4:" +ClassLoader.getSystemResource(""));

输出结果为：

1:file:/C:/Users/Administrator/git/sourceControl/demo1/target/test-classes/demo1/
2:file:/C:/Users/Administrator/git/sourceControl/demo1/target/test-classes/
3:/C:/Users/Administrator/git/sourceControl/demo1/target/test-classes/
4:file:/C:/Users/Administrator/git/sourceControl/demo1/target/test-classes/