13、java获取路径

1、获取WEB-INF文件夹下的文件

/C:/Users/Administrator/Workspaces/MyEclipse%2010/day_38_spring_hibernate/WebRoot/WEB-INF/classes/com/itheima/test/

String path=TestHibernate.class.getResource("").getPath();
        System.out.println(path);

其对应的文件位置是

 2、获取WEB-INF文件夹下的文件

/C:/Users/Administrator/Workspaces/MyEclipse%2010/day_38_spring_hibernate/WebRoot/WEB-INF/classes/

String path=TestHibernate.class.getResource("/").getPath();

其对于的文件位置是

3.getClassLoader和第二种的一样

/C:/Users/Administrator/Workspaces/MyEclipse%2010/day_38_spring_hibernate/WebRoot/WEB-INF/classes/

String path=TestHibernate.class.getClassLoader().getResource("").getPath();
        System.out.println(path);

4、

 file:/C:/Users/Administrator/Workspaces/MyEclipse%2010/day_38_spring_hibernate/WebRoot/WEB-INF/lib/hibernate3.jar!/

String path=TestHibernate.class.getClassLoader().getResource("/").getPath();
System.out.println(path);

5、Servlet的getRealPath

String path=getServletContext().getRealPath("/timeSequence.xlsx");

G:BaiduYunDownloadapache-tomcat-6.0.29apache-tomcat-6.0.29webappsTest_Polyfit imeSequence.xlsx

定位的是 

的项目路径下，然后可以去写WEB-INF/文件夹中找东东

需要注意的是在这里无论加不加"/",定位的都是tomcat的webappsTest_Polyfit

getRealPath("/timeSequence.xlsx");