Question

有没有办法可以告诉我的应用程序让每一页（让我们说.jsp页面）都面对上下文？

在我的web.xml中，我可以轻松地进行类似于以下的servlet映射：

<servlet-mapping>
   <servlet-name>Faces Servlet</servlet-name>
   <url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
   <servlet-name>Faces Servlet</servlet-name>
   <url-pattern>*.jsf</url-pattern>
</servlet-mapping>

我可以映射每个网址，包括/faces/虚拟路径或以.jsf结尾，由servlet处理，代表jsf引擎。

但是，如果我希望我的应用程序中的所有内容都在面部上下文中呢？我尝试添加：

<servlet-mapping>
   <servlet-name>Faces Servlet</servlet-name>
   <url-pattern>*.jsp</url-pattern>
</servlet-mapping>

但似乎应用程序立即崩溃：

NAQ Exception in PhaseListener RESTORE_VIEW(1) afterPhase
java.lang.NullPointerException
 at net.sf.jsfcomp.clientvalidators.ValidatorResourceLoader.afterPhase(Unknown Source)
 at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:92)
 at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:99)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:70)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:139)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
 at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469)
 at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:403)
 at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
 at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:419)
 at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:211)
 at it.asg.utility.viewhandlers.UrlParameterViewHandler.renderView(UrlParameterViewHandler.java:116)
 at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
 at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
 at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469)
 at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:403)
 at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
 at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:419)
 at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:211)
 at it.asg.utility.viewhandlers.UrlParameterViewHandler.renderView(UrlParameterViewHandler.java:116)
 at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
 at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)

怎么了？有没有办法让面孔上下文适用于我的应用程序中的每个页面？

Answer 1

这是不可能的，因为*.jsp将由servletcontainer的内置JspServlet解析。

理论上你可以使用url-pattern /*。

<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

实际上这将不起作用（FacesServlet不允许），它只会给不需要经历整个JSF生命周期的请求增加不必要的开销。

尽量不去思考/寻找困难/繁琐的方式。只需使用*.jsf，并在必要时在*.jsp添加安全约束，以阻止直接访问JSP，如我在previous question中所建议的那样。这是常见的做法。

或者，您也可以从JSP升级到基于XHTML / XML的Facelets。这样，您可以使用*.xhtml甚至*.html作为Facelets后缀和FacesServlet映射。

* .jsp的jsf servlet-mapping

1 个答案: