我的智慧结束了。当我尝试渲染JSF页面时，我在日志中得到以下内容：
java.lang.NullPointerException: serialFactory
at org.apache.myfaces.shared_impl.util.StateUtils.getAsByteArray(StateUtils.java:182)
at org.apache.myfaces.shared_impl.util.StateUtils.construct(StateUtils.java:149)
at org.apache.myfaces.renderkit.html.HtmlResponseStateManager.writeViewStateField(HtmlResponseStateManager.java:104)
at org.apache.myfaces.renderkit.html.HtmlResponseStateManager.writeState(HtmlResponseStateManager.java:94)
at javax.faces.render.ResponseStateManager.writeState(ResponseStateManager.java:67)
at org.ajax4jsf.application.AjaxStateManager.writeState(AjaxStateManager.java:294)
at org.ajax4jsf.application.AjaxStateManager.writeState(AjaxStateManager.java:256)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:620)
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:301)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at za.co.fnbconnect.portal.util.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:94)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at za.co.fnbconnect.portal.util.StatsFilter.doFilter(StatsFilter.java:90)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Unknown Source)
这是我的web.xml
<?xml version="1.0"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!-- Use Documents Saved as *.xhtml -->
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>
<!-- Special Debug Output for Development -->
<context-param>
<param-name>facelets.DEVELOPMENT</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.ERROR_HANDLING</param-name>
<param-value>false</param-value>
</context-param>
<!-- Optional JSF-RI Parameters to Help Debug -->
<context-param>
<param-name>com.sun.faces.validateXml</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.verifyObjects</param-name>
<param-value>true</param-value>
</context-param>
<!-- context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>
/WEB-INF/faces-config.xml
</param-value>
</context-param-->
<context-param>
<param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.PRETTY_HTML</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.ajax4jsf.VIEW_HANDLERS</param-name>
<param-value>com.sun.facelets.FaceletViewHandler</param-value>
</context-param>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<param-name>javax.faces.PARTIAL_STATE_SAVING</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>
/WEB-INF/faces-config-connections.xml,
/WEB-INF/faces-config-general.xml,
/WEB-INF/faces-config-ims.xml,
/WEB-INF/faces-config-maintenance.xml,
/WEB-INF/faces-config-menu.xml,
/WEB-INF/faces-config-profile.xml,
/WEB-INF/faces-config-registration-activation.xml,
/WEB-INF/faces-config-registration.xml,
/WEB-INF/faces-config-solutions.xml,
/WEB-INF/faces-config-topup.xml,
/WEB-INF/faces-config-transfer.xml
</param-value>
</context-param>
<context-param>
<description>Used for addition Im. Only relevant for client side
state saving. See MyFaces wiki/web site documentation for instructions
on how to configure an application for diffenent encryption strengths.
</description>
<param-name>org.apache.myfaces.SECRET</param-name>
<param-value>NzY1NDMyMTA=</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.SERIAL_FACTORY</param-name>
<param-value>org.apache.myfaces.JbossSerialFactory</param-value>
</context-param>
<filter>
<filter-name>SessionTimeoutFilter</filter-name>
<filter-class>
za.co.fnbconnect.portal.util.SessionTimeoutFilter
</filter-class>
</filter>
<filter>
<filter-name>StatsFilter</filter-name>
<filter-class>
za.co.fnbconnect.portal.util.StatsFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>StatsFilter</filter-name>
<url-pattern>*.faces</url-pattern>
</filter-mapping>
<filter>
<display-name>RichFaces Filter</display-name>
<filter-name>richfaces</filter-name>
<filter-class>org.ajax4jsf.Filter</filter-class>
</filter>
<filter-mapping>
<filter-name>SessionTimeoutFilter</filter-name>
<url-pattern>*.faces</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>richfaces</filter-name>
<servlet-name>Faces Servlet</servlet-name>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
</filter-mapping>
<!-- tomahawk extension filters -->
<filter>
<filter-name>MyFacesExtensionsFilter</filter-name>
<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
<init-param>
<param-name>uploadMaxFileSize</param-name>
<param-value>20m</param-value>
</init-param>
</filter>
<!-- extension mapping for adding <script/>, <link/>, and other resource tags to JSF-pages -->
<filter-mapping>
<filter-name>MyFacesExtensionsFilter</filter-name>
<!-- servlet-name must match the name of your javax.faces.webapp.FacesServlet entry -->
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<!-- extension mapping for serving page-independent resources (javascript, stylesheets, images, etc.) -->
<filter-mapping>
<filter-name>MyFacesExtensionsFilter</filter-name>
<url-pattern>/faces/myFacesExtensionResource/*</url-pattern>
</filter-mapping>
<!-- end -->
<listener>
<listener-class>
za.co.fnbconnect.portal.util.FNBConnectSessionListener
</listener-class>
</listener>
<!-- Listener, that does all the startup work (configuration, init). -->
<listener>
<listener-class>
org.apache.myfaces.webapp.StartupServletContextListener
</listener-class>
</listener>
<servlet>
<servlet-name>Log4jInitialiser</servlet-name>
<servlet-class>za.co.fnbconnect.log4j.Log4jInitializer</servlet-class>
<!-- DEV -->
<init-param>
<param-name>DEV-hosts</param-name>
<param-value>192.168.18.14</param-value>
</init-param>
<init-param>
<param-name>DEV-log4j-init-file</param-name>
<param-value>/opt/PropertiesManager/tomcat-log4j-DEV.xml</param-value>
</init-param>
<!-- INT -->
<init-param>
<param-name>INT-hosts</param-name>
<param-value>192.168.18.73</param-value>
</init-param>
<init-param>
<param-name>INT-log4j-init-file</param-name>
<param-value>/opt/PropertiesManager/tomcat-log4j-INT.xml</param-value>
</init-param>
<!-- PREPROD -->
<init-param>
<param-name>PREPROD-hosts</param-name>
<param-value>192.168.18.139</param-value>
</init-param>
<init-param>
<param-name>PREPROD-log4j-init-file</param-name>
<param-value>/opt/PropertiesManager/tomcat-log4j-PREPROD.xml</param-value>
</init-param>
<!-- LOAD -->
<init-param>
<param-name>LOAD-hosts</param-name>
<param-value>192.168.44.6,192.168.44.13</param-value>
</init-param>
<init-param>
<param-name>LOAD-log4j-init-file</param-name>
<param-value>/opt/PropertiesManager/tomcat-log4j-LOAD.xml</param-value>
</init-param>
<!-- PROD -->
<init-param>
<param-name>PROD-hosts</param-name>
<param-value>192.168.34.6,192.168.34.135</param-value>
</init-param>
<init-param>
<param-name>PROD-log4j-init-file</param-name>
<param-value>/opt/PropertiesManager/tomcat-log4j-PROD.xml</param-value>
</init-param>
<!-- Default when running on the PC -->
<init-param>
<param-name>DEFAULT-log4j-init-file</param-name>
<param-value>C:/FNBConnect/PropertiesManager/FE/tomcat-log4j-PC.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>10</session-timeout>
</session-config>
<!-- Welcome files -->
<error-page>
<error-code>401</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>402</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>403</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>404</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>405</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>406</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>407</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>408</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>409</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>410</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>411</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>412</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>413</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>414</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>415</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>416</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>417</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>418</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>422</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>423</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>424</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>425</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>426</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>449</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>501</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>502</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>503</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>504</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>505</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>506</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>507</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>509</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<error-page>
<error-code>510</error-code>
<location>/GeneralError.jsp</location>
</error-page>
<login-config>
<auth-method>BASIC</auth-method>
</login-config>
</web-app>
我看过源代码，它似乎想要从上下文中获取org.apache.myfaces.SERIAL_FACTORY，因为某种原因而不存在。任何人都有任何想法吗？
答案 0 :(得分：1)
只是一个猜测（我没有尝试过），但它看起来似乎是一个类似的堆栈跟踪，以及导出SERIAL_FACTORY作为属性的代码修复：
http://wiki.apache.org/myfaces/PortletSerialFactoryWorkaround
以下是他们指定的例外情况：
java.lang.NullPointerException: serialFactory
at org.apache.myfaces.shared_impl.util.StateUtils.getAsByteArray(StateUtils.java:174)
at org.apache.myfaces.shared_impl.util.StateUtils.construct(StateUtils.java:150)
at org.apache.myfaces.renderkit.html.HtmlResponseStateManager.writeState(HtmlResponseStateMa
nager.java:73)
at org.apache.myfaces.application.jsp.JspStateManagerImpl.writeState(JspStateManagerImpl.jav
a:430)
并且，他们建议修复：“要解决此问题，请扩展MyFacesGenericPortlet并覆盖init（）方法，如下所示：”
public void init() throws PortletException, UnavailableException
{
super.init();
getPortletContext().setAttribute("org.apache.myfaces.SERIAL_FACTORY", new org.apache.myfaces.shared_impl.util.serial.DefaultSerialFactory());
}