获得当前所在项根路径的方法

public static void main(String[] args) {
System.out.println(Thread.currentThread().getContextClassLoader().getResource(""));
System.out.println(HibernateMappingManager.class.getClassLoader().getResource(""));
System.out.println(ClassLoader.getSystemResource(""));
System.out.println(HibernateMappingManager.class.getResource(""));
System.out.println(HibernateMappingManager.class.getResource("/")); // Class文件所在路径
System.out.println(new File("/").getAbsolutePath());
System.out.println(System.getProperty("user.dir"));
String rootSrc = System.getProperty("user.dir");
String xmlSrc = rootSrc + "//hrJava//config//hbmxml";
System.out.println(xmlSrc);
}