java中获取路径的方法

• 在class获取路径的方法，getResource有没有“”的区别

  System.out.println("" + this.getClass().getResource("").getPath());
  
  video/software/JavaWorkspace/java_web_test/out/artifacts/java_web_test_war_exploded/WEB-INF/classes/cn/xx/dao/
  
  
  
  System.out.println("" + this.getClass().getResource("/").getPath());
  
  video/software/JavaWorkspace/java_web_test/out/artifacts/java_web_test_war_exploded/WEB-INF/classes/