我试图在IBM WebSphere Portal 8.5上部署一个带有PrimeFaces 5.0 Calendar的简单Portlet。它有效，但没有显示日历上的箭头，我在WAS控制台中收到NullPointerException。
JSF的portlet-代码：
<!-- jsf:pagecode language="java" location="/src/pagecode/TestPortletView.java" --><!-- /jsf:pagecode -->
<div 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:portlet="http://java.sun.com/portlet_2_0"
xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<h:form>
<p:calendar value="#{pc_TestPortletView.date}" />
<p:commandButton update="display" value="Submit" />
<h:outputText id="display" value="#{testBean.date}" />
</h:form>
</div>
支持bean：
package pagecode;
import java.util.Date;
public class TestPortletView extends PageCodeBase {
private Date date = new Date();
public Date getDate() { return date; }
public void setDate(Date date) { this.date = date; }
}
堆栈跟踪：
[03.07.14 12:03:19:806 CEST] 00000120 ErrorPageWrit E An exception occurred
java.lang.NullPointerException
at org.apache.myfaces.application.ResourceHandlerImpl.getWrappedResourceName(ResourceHandlerImpl.java:670)
at org.apache.myfaces.application.ResourceHandlerImpl.getWrappedResourceName(ResourceHandlerImpl.java:678)
at org.apache.myfaces.application.ResourceHandlerImpl._getContentType(ResourceHandlerImpl.java:650)
at org.apache.myfaces.application.ResourceHandlerImpl.handleResourceRequest(ResourceHandlerImpl.java:380)
at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:62)
at org.primefaces.application.PrimeResourceHandler.handleResourceRequest(PrimeResourceHandler.java:132)
at javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:62)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:183)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1230)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:779)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:136)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:79)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:960)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1064)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3837)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:981)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:459)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:526)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:312)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:88)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1864)
知道导致此错误的原因吗？ ＆＃34;正常＆＃34;中的相同代码JSF-Page（不在portlet中）就像魅力......
感谢您的帮助！