如何直接提供HTML页面时应用servlet过滤器？ [英] How do I apply a servlet filter when serving an HTML page directly?

问题描述

首先，我使用Google AppEngine和Guice，但我怀疑我的问题与这些不相关。

当用户连接到我的（GWT） webapp，这个URL是一个直接的html页面。例如，在开发模式下，它是： http://127.0.0.1:8888/Puzzlebazar.html?gwt.codesvr=127.0.0.1:9997 。现在，我通过以下方式设置我的 web.xml ：

  <？xml version =1.0encoding =UTF-8？> 
< web-app xmlns =http://java.sun.com/xml/ns/javaeexmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd
版本= 2.5 > 
< display-name> PuzzleBazar< / display-name> 
 
 <！ - 要投放的默认页面 - > 
< welcome-file-list> 
< welcome-file> Puzzlebazar.html< / welcome-file> 
< / welcome-file-list> 
 
 
< filter> 
< filter-name> guiceFilter< / filter-name> 
< filter-class> com.google.inject.servlet.GuiceFilter< / filter-class> 
< / filter> 
 
< filter-mapping> 
< filter-name> guiceFilter< / filter-name> 
< url-pattern> / *< / url-pattern> 
< / filter-mapping> 
 
 <！ -  
这个Guice侦听器劫持所有进一步的过滤器和servlet。额外的
过滤器和servlet必须通过调用
 serve（String）.with（Class< ;? extends HttpServlet>）和
 filter（）来配置
 ServletModule＃configureServlets字符串）.through（Class< ;? extends Filter）
  - > 
< listener> 
< listener-class> com.puzzlebazar.server.guice.MyGuiceServletContextListener 
< / listener-class> 
< / listener> 
 
< / web-app> 
  

我的 appengine-web.xml 是：

 <？xml version =1.0encoding =utf-8？> 
< appengine-web-app xmlns =http://appengine.google.com/ns/1.0> 
< application> puzzlebazaar< / application> 
< version> 1< / version> 
<会话启用>真实< /会话启用> 
 
 <！ - 配置java.util.logging  - > 
< system-properties> 
< property name =java.util.logging.config.filevalue =WEB-INF / logging.properties/> 
< / system-properties> 
 
< / appengine-web-app> 
  

由于我使用的是Guice，我必须在我的ServletModule中配置额外的过滤器， ：

  filter（*。html）。through（SecurityCookieFilter.class）; 
  

但我的 SecurityCookieFilter.doFilter 永远不会被调用。我尝试了诸如*。html *或< url-pattern> *< / url-pattern> 但无济于事。任何想法我应该如何做到这一点？

解决方案

您可能已将html文件配置为您的appengine中的静态内容-web.xml。静态文件服务根本不涉及您的应用程序，因此您无法过滤输出。

First off, I'm using Google AppEngine and Guice, but I suspect my problem is not related to these.

When the user connect to my (GWT) webapp, the URL is a direct html page. For example, in development mode, it is: http://127.0.0.1:8888/Puzzlebazar.html?gwt.codesvr=127.0.0.1:9997. Now, I setup my web.xml in the following way:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
 version="2.5">
 <display-name>PuzzleBazar</display-name>

 <!-- Default page to serve -->
 <welcome-file-list>
  <welcome-file>Puzzlebazar.html</welcome-file>
 </welcome-file-list>


 <filter>
  <filter-name>guiceFilter</filter-name>
  <filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
 </filter>

 <filter-mapping>
  <filter-name>guiceFilter</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>

 <!--
  This Guice listener hijacks all further filters and servlets. Extra
  filters and servlets have to be configured in your
  ServletModule#configureServlets() by calling
  serve(String).with(Class<? extends HttpServlet>) and
  filter(String).through(Class<? extends Filter)
 -->
 <listener>
  <listener-class>com.puzzlebazar.server.guice.MyGuiceServletContextListener
  </listener-class>
 </listener>

</web-app>

And my appengine-web.xml is:

<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
    <application>puzzlebazaar</application>
    <version>1</version>
    <sessions-enabled>true</sessions-enabled>

    <!-- Configure java.util.logging -->
    <system-properties>
        <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>     
    </system-properties>

</appengine-web-app>

Since I'm using Guice, I have to configure extra filters in my ServletModule, where I do this:

filter("*.html").through( SecurityCookieFilter.class );

But my SecurityCookieFilter.doFilter is never called. I tried things like "*.html*" or <url-pattern>*</url-pattern> but to no avail. Any idea how I should do this?

解决方案

You've probably configured html files to be served up as static content in your appengine-web.xml. Static file serving doesn't involve your app at all, so you can't filter the output.

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