web容器用resin,项目采用springMVC,关键配置如下:
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
控制器层有个方法如下:
@RequestMapping("/forum") public String forum(HttpServletRequest request, HttpServletResponse response, Model model) throws IOException { System.out.println("controller getContextPath: " + request.getContextPath()); System.out.println("controller getServletPath: " + request.getServletPath()); System.out.println("controller query string: " + request.getQueryString()); request.setAttribute("controllerrequest", request); return "/templates/" + systemConfig.getAppName() + "/forum"; }
返回的页面forum.jsp页面部分代码如下:
<% out.print(request.getContextPath()); out.print("---"); out.print(request.getServletPath()); out.print("---"); out.print(request.getQueryString()); out.print("---"); out.print(request.equals(request.getAttribute("controllerrequest"))); %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> //以下省略
控制器层结果:
controller getContextPath: /bbs7
controller getServletPath: /forum.do
controller query string: fid=1988&filter=type&fval=g6559g80b2g89c2g70b9
view层输出:
/bbs7---/WEB-INF/view/templates/baby/forum.jsp---fid=1988&filter=type&fval=g6559g80b2g89c2g70b9---false
controller层和view层的request有什么异同呢?从打印的结果来看,可以得出如下结论:
(1)这两个request是两个不同的对象
(2)这两个request拿到的getContextPath()是相同的,因为都是拿同一个应用于的ContextPath
(3)两个request 拿到的servletPath是不同的,controller层拿到的是最初请求的servlet路径,view层拿到的是请求经过mvc处理转发之后,jsp页面的路径
(4)两个request 拿到的 queryString是一样的,原因是mvc请求转到view层的时候,把最初请求的queryString带上了