0
使用BalusC的這種技術（Pass Argument to a composite-component action attribute），我已成功地將參數傳遞給複合組件中的方法，但是這似乎適用於Mojarra，但不適用於MyFaces 2.0.4-2.0.5（打包在Websphere 8.5 + OpenWebBeans內）。我後我的下面複合組件中方法的傳遞參數在MyFaces上不起作用
代碼這是我的CC
<cc:interface>
<cc:attribute name="value" />
<cc:attribute name="bean" />
<cc:attribute name="myAction" />
<cc:attribute name="property" />
</cc:interface>
<cc:implementation>
<rich:dataTable value="#{cc.attrs.value}" var="galleryFile">
...
<a4j:commandLink execute="@this" action="#{cc.attrs.bean[cc.attrs.myAction]}">
<f:setPropertyActionListener
target="#{cc.attrs.bean[cc.attrs.property]}"
value="#{galleryFile}" />
</a4j:commandLink>
</rich:dataTable>
</cc:implementation>
從外面看我這樣做
<mycomp:reportGallery value="#{listPopup.files}" id="listReportGallery"
bean="#{listPopup}" myAction="fileSelected" property="selectedFile"/>
內ListPopup ViewScoped豆，我有
@ManagedBean(name = "listPopup")
@ViewScoped
public class ListPopup implements Serializable {
private EpiFSObject selectedFile;
public void setSelectedFile(final EpiFSObject selectedFile) {
this.selectedFile = selectedFile;
}
public EpiFSObject getSelectedFile() {
return selectedFile;
}
public void fileSelected() {
...
}
}
當我點擊在鏈接上，我得到了這個異常
javax.el.PropertyNotFoundException: /resources/infor/reportGallery.xhtml at line 79 and column 89 action="#{cc.attrs.bean[cc.attrs.myAction]}": Property 'fileSelected' not found on type com.infor.om.ui.bean.ListPopup
at org.apache.myfaces.view.facelets.el.TagValueExpression.getValue(TagValueExpression.java:89)
at org.apache.myfaces.view.facelets.el.LocationValueExpression.getValue(LocationValueExpression.java:90)
所以它fileSelected是一個屬性，而不是一個方法。有誰知道如何解決這個問題嗎？我的猜測是，這個問題來自的OpenWebBeans
編輯我從BalusC建議做一個黑客提供getFileSelected()，因爲它要求fileSelected的屬性，而不是方法
public String getFileSelected(){
fileSelected();
return "";
}
，但我仍然有以下例外
java.lang.NullPointerException
at org.apache.myfaces.view.facelets.el.ValueExpressionMethodExpression.getExpressionString(ValueExpressionMethodExpression.java:70)
at org.apache.myfaces.view.facelets.el.TagMethodExpression.getExpressionString(TagMethodExpression.java:101)
at javax.faces.component._MethodExpressionToMethodBinding.getExpressionString(_MethodExpressionToMethodBinding.java:60)
at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:97)
at javax.faces.component.UICommand.broadcast(UICommand.java:120)
at org.richfaces.component.RowKeyContextEventWrapper.broadcast(RowKeyContextEventWrapper.java:104)
at org.richfaces.component.UIDataAdaptor.broadcast(UIDataAdaptor.java:448)
at javax.faces.component.UIViewRoot._broadcastAll(UIViewRoot.java:973)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:275)
at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1285)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:711)
at org.apache.myfaces.lifecycle.InvokeApplicationExecutor.execute(InvokeApplicationExecutor.java:34)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1225)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:775)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:457)
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:97)
at com.infor.om.ui.servlets.filter.LoginFilter.doFilter(LoginFilter.java:151)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.infor.om.ui.servlets.filter.ResponseFilter.doFilter(ResponseFilter.java:110)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.infor.om.ui.servlets.filter.LoginFilter.doFilter(LoginFilter.java:151)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.infor.om.ui.filter.RequestHeaderLogger.doFilter(RequestHeaderLogger.java:77)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.infor.om.ui.filter.RequestHeaderLogger.doFilter(RequestHeaderLogger.java:77)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:928)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1025)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:908)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
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.HttpInboundLink.ready(HttpInboundLink.java:283)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
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:1815)
請幫忙。謝謝
MyFaces 2.0.4-5很舊。您是否可以升級到例如2.1.12或2.0.18以排除年齡不是原因？ – BalusC
@BalusC：我不能。 MyFaces jar與WebSphere 8.5打包在一起 –
好吧，你可以通過將方法重命名爲getFileSelected（）來破解它。 – BalusC