HttpServletRequest几个常用方法的区别

Demo

Jsp测试代码

<%

out.println("\t     ContextPath: " + request.getContextPath()+"<br/>");
out.println("\t     ServletPath: " + request.getServletPath()+"<br/>");
out.println("\t        PathInfo: " + request.getPathInfo()+"<br/>");
out.println("\t        RealPath: "+request.getRealPath("/")+"<br/>");
out.println("\t      RequestURI: " + request.getRequestURI()+"<br/>");
out.println("\t     QueryString: " + request.getQueryString()+"<br/>");
%>

测试结果

ContextPath: /examples
ServletPath: /1.jsp
PathInfo: null   //no extra path information
RealPath: D:\soft\tomcat-7.0.23\webapps\examples\
RequestURI: /examples/1.jsp
QueryString: null