Question

我制作了一个新的IceFace项目并尝试在我的本地主机上运行它，但是我收到以下错误消息：

Nov 4, 2013 11:41:10 PM com.sun.faces.config.ConfigureListener$WebConfigResourceMonitor$Monitor <init>
INFO: Monitoring file:/Users/Alex/Documents/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/TEST/WEB-INF/faces-config.xml for modifications
2013-11-04 23:41:10.563:INFO:oejs.AbstractConnector:Started SelectChannelConnector@0.0.0.0:8080
    2013-11-04 23:41:11.623:WARN:oejh.HttpGenerator:Ignoring extra content <html>

<head>
</head>
<body>

</body>
</html>
Nov 4, 2013 11:41:11 PM org.icefaces.impl.application.ExtendedExceptionHandler handle
WARNING: queued exception
java.lang.NullPointerException
    at org.icepush.util.ExtensionRegistry.getBestExtension(ExtensionRegistry.java:69)
    at org.icefaces.impl.push.servlet.ICEpushResourceHandler$ICEpushResourceHandlerImpl.beforePhase(ICEpushResourceHandler.java:171)
    at org.icefaces.impl.push.servlet.ICEpushResourceHandler.beforePhase(ICEpushResourceHandler.java:111)
    at com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:228)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:99)
    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:116)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.Server.handle(Server.java:368)
    at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
    at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)
    at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
    at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
    at org.eclipse.jetty.util.thread.QueuedThreadPool

这是我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>TEST</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
    <url-pattern>*.jsf</url-pattern>
    <url-pattern>/icefaces/*</url-pattern>
  </servlet-mapping>
  <context-param>
    <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>server</param-value>
  </context-param>
  <context-param>
    <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
    <param-value>resources.application</param-value>
  </context-param>
  <listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
  </listener>
  <context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Development</param-value>
  </context-param>
  <context-param>
    <param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
    <param-value>true</param-value>
  </context-param>
  <context-param>
    <param-name>org.icefaces.coalesceResources</param-name>
    <param-value>false</param-value>
  </context-param>
  <context-param>
    <param-name>org.icefaces.strictSessionTimeout</param-name>
    <param-value>true</param-value>
  </context-param>
  <context-param>
    <param-name>org.icefaces.ace.gmapKey</param-name>
    <param-value>AIzaSyAATyWVqT2qNusNGmcVTyQ0QmymkpU-B5o</param-value>
  </context-param>
  <mime-mapping>
    <extension>png</extension>
    <mime-type>image/png</mime-type>
  </mime-mapping>
</web-app>

我在WebContext下面的两个文件是index.jsp，它重定向到index.jsf，另一个文件是index.xhtml，其中包含以下内容：

<?xml version='1.0' encoding='UTF-8' ?>
<!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"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:icecore="http://www.icefaces.org/icefaces/core"
        xmlns:ace="http://www.icefaces.org/icefaces/components"
    >
    <h:head>
        <title>ICEfaces 3</title>
    </h:head>
    <h:body>
       <h:form id="iceForm">
        <ace:panel header="Welcome to ICEfaces">
      <h:panelGrid columns="1">
        <ace:linkButton id="linkButton1" value="ICEfaces Overview" href="http://wiki.icesoft.org/display/ICE/ICEfaces+Overview"></ace:linkButton>
        <ace:linkButton id="linkButton2" value="General Documentation" href="http://wiki.icesoft.org/display/ICE/ICEfaces+Documentation"></ace:linkButton>
        <ace:linkButton id="linkButton4" value="Tutorials" href="http://www.icesoft.org/community/tutorials-samples.jsf"></ace:linkButton>
        <ace:linkButton id="linkButton5" value="ACE components" href="http://wiki.icesoft.org/display/ICE/ACE+Components"></ace:linkButton>
     </h:panelGrid>
    </ace:panel>
       </h:form>
    </h:body>
</html>

我尝试将welcome-file-list切换到

  <welcome-file-list>
    <welcome-file>index.xhtml</welcome-file> <!--switched extension from html to xhtml -->
  <welcome-file-list>

通过此更改我的localhost不会崩溃，但是我得到一个空白页面（我的JSF元素都没有出现）我感觉这是因为我的JSf标签都没有被解析，但是我没有真的知道问题出在哪里，有人可以帮助我吗？

其他信息：我正在为Web开发人员使用Eclipse Java EE IDE ICEFACES 3.3.0 Tomcat 3.0

感谢。

更新

将我的web.xml welcome-file-list更改为

  <welcome-file-list>
    <welcome-file>index.xhtml</welcome-file>
  </welcome-file-list>

并将我的servlet映射更改为

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

现在没有崩溃，但我的JSF元素没有出现，我只得到一个空白页面。

更新

Web.xml中

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

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

我在url-pattern标签内试过.jsf和.xhtml都没有运气

的index.jsp

<html>
<head>
</head>
<body>
      <%
        //response.sendRedirect("./index.jsf");
    %> 

    <jsp:forward page="main.jsf"/>

</body>
</html>

让我的页面加载后，它变成空白，所以我右键单击我的页面并查看源代码，这就是我发现的......

<?xml version='1.0' encoding='UTF-8' ?>
<!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"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:icecore="http://www.icefaces.org/icefaces/core"
        xmlns:ace="http://www.icefaces.org/icefaces/components"
    >
    <h:head>
        <title>ICEfaces 3</title>
    </h:head>
    <h:body>
       <h:form id="iceForm">
        <ace:panel header="Welcome to ICEfaces">
      <h:panelGrid columns="1">
        <ace:linkButton id="linkButton1" value="ICEfaces Overview" href="http://wiki.icesoft.org/display/ICE/ICEfaces+Overview"></ace:linkButton>
        <ace:linkButton id="linkButton2" value="General Documentation" href="http://wiki.icesoft.org/display/ICE/ICEfaces+Documentation"></ace:linkButton>
        <ace:linkButton id="linkButton4" value="Tutorials" href="http://www.icesoft.org/community/tutorials-samples.jsf"></ace:linkButton>
        <ace:linkButton id="linkButton5" value="ACE components" href="http://wiki.icesoft.org/display/ICE/ACE+Components"></ace:linkButton>
     </h:panelGrid>
    </ace:panel>
       </h:form>
    </h:body>
</html>

为什么会发生这种情况？

org.icepush.util.ExtensionRegistry.getBestExtension中的java.lang.NullPointerException

0 个答案: