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/main/list.jsp
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 6.0\webapps\news\test
转自:http://blog.csdn.net/huang_xw/article/details/8008418
${pageContext.request.contextPath}是JSP取得绝对路径的方法,等价于<%=request.getContextPath()%> 。