String a = this.getClass().getClassLoader().getResource(".").getPath();
String b = this.getClass().getResource("").getPath();
String c = this.getClass().getResource(" ").getPath();
String d = this.getClass().getResource("/").getPath();
转载于:https://www.cnblogs.com/ningjf/archive/2009/07/08/1519313.html