request.getRequestURI() 、request.getRequestURL() 、request.getContextPath()、request.getServletPath()区别

request.getRequestURI() /jqueryWeb/resources/request.jsp
request.getRequestURL() http://localhost:8080/jqueryWeb/resources/request.jsp request.getContextPath()/jqueryWeb
request.getServletPath()/resources/request.jsp

注： resources为WebContext下的目录名
jqueryWeb 为工程名

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<%=request.getRequestURI() %><br/>
<%=request.getRequestURL() %><br/>
<%=request.getContextPath()%><br/>
<%=request.getServletPath() %><br/>
<%=request.getPathInfo() %><br/>
结果：
/test-struts.jsp http://127.0.0.1:8080/test-struts.jsp
/test-struts.jsp
null

配置：
<action name="test" class="testStrutsAction" method="test">
<result>/test-struts.jsp</result>
</action>

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
则执行下面向行代码后打印出如下结果：

1、 System.out.println(request.getContextPath());

打印结果：/news

2、System.out.println(request.getServletPath());

打印结果：/main/list.JSP

3、 System.out.println(request.getRequestURI());

打印结果：/news/main/list.JSp

4、 System.out.println(request.getRealPath("/"));

打印结果：F:\tomcat 6.0\webapps\news\test