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新安装的Tomcat v7.0和Eclipse.试图加载SSI Servlet支持.根据Tomcat指令修改了context.xml和web.xml.

Context.xml(显示相关片段):

<Context reloadable="true" privileged="true">

    <!-- Default set of monitored resources -->
    <WatchedResource>WEB-INF/web.xml</WatchedResource>


</Context>

web.xml(显示相关片段):

   <servlet>
        <servlet-name>ssi</servlet-name>
        <servlet-class>
          org.apache.catalina.ssi.SSIServlet
        </servlet-class>
        <init-param>
          <param-name>buffered</param-name>
          <param-value>1</param-value>
        </init-param>
        <init-param>
          <param-name>debug</param-name>
          <param-value>0</param-value>
        </init-param>
        <init-param>
          <param-name>expires</param-name>
          <param-value>666</param-value>
        </init-param>
        <init-param>
          <param-name>isVirtualWebappRelative</param-name>
          <param-value>0</param-value>
        </init-param>
        <load-on-startup>4</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>ssi</servlet-name>
        <url-pattern>*.shtml</url-pattern>
    </servlet-mapping>

但我仍然得到以下加载异常:

Mar 23, 2012 12:06:00 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet  threw load() exception
java.lang.SecurityException: Restricted class org.apache.catalina.ssi.SSIServlet
    at 

org.apache.catalina.core.DefaultInstanceManager.checkAccess(DefaultInstanceManager.java:548)
        at org.apache.catalina.core.DefaultInstanceManager.checkAccess(DefaultInstanceManager.java:539)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:509)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:124)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1136)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5001)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5289)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at …