获取web项目根目录

Question

request.getcontextpath()为空值,我想获取web项目根目录,对外提供保存在服务器里的图片uri

Answer 1

1 区别

假定你的web application 名称为news，你在浏览器中输入请求路径：

http://localhost:8080/news/ma...

1.1 System.out.println(request.getContextPath());

打印结果：/news

1.2 System.out.println(request.getServletPath());

打印结果：/main/list.jsp

1.3 System.out.println(request.getRequestURI());

打印结果：/news/main/list.jsp

1.4 System.out.println(request.getRealPath("/"));

打印结果：F:Tomcat 6.0webappsnewstest