过滤 web.xml 中的 url 模式冲突？答案

【问题标题】：Filter url pattern conflict in web.xml ?过滤 web.xml 中的 url 模式冲突？
【发布时间】：2011-12-21 19:00:24
【问题描述】：

我正在开发一个项目，应用程序在 j2ee 中，我使用 ehcache 进行网页缓存，但由于过滤器的条目，它给了我一个错误内容编码错误我添加了以下过滤器和 ehcache.xml 任何人都可以说哪个条目导致它？

web.xml 过滤器条目

    <filter>
    <filter-name>SetCharacterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>SetCharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
    <filter>
    <filter-name>Pretty Filter</filter-name>
    <filter-class>com.ocpsoft.pretty.PrettyFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>Pretty Filter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>ERROR</dispatcher>
</filter-mapping>
<filter>
    <filter-name>extensionsFilter</filter-name>
    <filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
    <init-param>
        <description>Set the size limit for uploaded files.
                   Format: 10 - 10 bytes
                  10k - 10 KB
        </description>
        <param-name>uploadMaxFileSize</param-name>
        <param-value>100m</param-value>
    </init-param>
    <init-param>
        <description>Set the threshold size - files below this limit are stored
             in memory, files above this limit are stored on disk.
                     Format: 10 - 10 bytes
                     10k - 10 KB
        </description>
        <param-name>uploadThresholdSize</param-name>
        <param-value>100k</param-value>
    </init-param>
    <init-param>
        <param-name>uploadRepositoryPath</param-name>
        <param-value>/home</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>extensionsFilter</filter-name>
    <url-pattern>*.jsf</url-pattern>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>ERROR</dispatcher>
</filter-mapping>
<filter>
    <filter-name>CachePage1CachingFilter</filter-name>
    <filter-class>net.sf.ehcache.constructs.web.filter.SimplePageCachingFilter</filter-class>
    <init-param>
        <param-name>suppressStackTraces</param-name>
        <param-value>false</param-value>
    </init-param>
    <init-param>
        <param-name>cacheName</param-name>
        <param-value>CachePage1CachingFilter</param-value>
    </init-param>
</filter>

<filter-mapping>
    <filter-name>CachePage1CachingFilter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
    <dispatcher>FORWARD</dispatcher>
</filter-mapping>

ehcache.xml如下

 <ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd">

<diskStore path="java.io.tmpdir"/>
<defaultCache
    maxElementsInMemory="10"
    eternal="false"
    timeToIdleSeconds="5"
    timeToLiveSeconds="10"
    overflowToDisk="true"
/>
<!-- Page and Page Fragment Caches -->
<cache name="CachePage1CachingFilter"
    maxElementsInMemory="10"
    eternal="false"
    timeToIdleSeconds="10000"
    timeToLiveSeconds="10000"
    overflowToDisk="true">
</cache>

已编辑：-

我试过了，我发现问题是因为

中的 url 模式

   <filter-name>CachePage1CachingFilter</filter-name>
    <url-pattern>/*</url-pattern>

在过滤器中它会在过滤器中连续运行，如果我在下面写，则异常是可重入异常

    <filter-name>CachePage1CachingFilter</filter-name>
    <url-pattern>*.jsp</url-pattern>

它工作正常，但我希望它适用于 jsf，并且 jsf 的输入是在 preety 配置中完成的，如 follow

 <url-mapping id="ManageUsers">
    <pattern>/manageUsers</pattern>
    <view-id>/pages/master/manageUsers.jsf</view-id>
 </url-mapping>

我应该怎么做才能避免这种情况？

【问题讨论】：

如果您发布包括堆栈跟踪在内的确切错误消息会有所帮助。

标签： caching jakarta-ee webpage ehcache web.xml

【解决方案1】：

使用 servlet 规范 2.5（由 Tomcat 6 实现），您可以指定多个 url 模式：

<filter-mapping>
    <filter-name>CachePage1CachingFilter</filter-name>
    <url-pattern>*.jsp</url-pattern>
    <url-pattern>*.jsf</url-pattern>
</filter-mapping>

对于 2.5 之前的版本，您可以指定两个映射

<filter-mapping>
    <filter-name>CachePage1CachingFilter</filter-name>
    <url-pattern>*.jsp</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>CachePage1CachingFilter</filter-name>
    <url-pattern>*.jsf</url-pattern>
</filter-mapping>

【讨论】：