Exception JSF2.0不初始化ManagedBeans
我在Windows7上使用WebSphereApplicationServer8.0和PrimeFaces3.5 我在EclipseIDEJuno或RationalApplicationDeveloper中有一些动态Web项目。 这个项目在一段时间内运作良好。但是现在没有任何ManagedBean（无论是ApplicationScoped、SessionScoped、ViewScoped还是RequestScoped）被初始化 下面是一个具体的例子。每个页面上都会出现异常 JSF： 例外情况：Exception JSF2.0不初始化ManagedBeans,exception,jsf-2,primefaces,myfaces,websphere-8,Exception,Jsf 2,Primefaces,Myfaces,Websphere 8,我在Windows7上使用WebSphereApplicationServer8.0和PrimeFaces3.5 我在EclipseIDEJuno或RationalApplicationDeveloper中有一些动态Web项目。 这个项目在一段时间内运作良好。但是现在没有任何ManagedBean（无论是ApplicationScoped、SessionScoped、ViewScoped还是RequestScoped）被初始化 下面是一个具体的例子。每个页面上都会出现异常 JSF： 例外情况：
0000001c ErrorPageWrit E An exception occurred
javax.faces.FacesException: javax.el.PropertyNotFoundException: /control/index.xhtml at line 15 and column 55 value="#{defaultComments.test}": Target Unreachable, identifier 'defaultComments' resolved to null
at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.wrap(ExceptionHandlerImpl.java:241)
at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.handle(ExceptionHandlerImpl.java:156)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:191)
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:1147)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:722)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:449)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1020)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:886)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1655)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:276)
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:1650)
Caused by: javax.el.PropertyNotFoundException: /control/index.xhtml at line 15 and column 55 value="#{defaultComments.test}": Target Unreachable, identifier 'defaultComments' resolved to null
at org.apache.myfaces.view.facelets.el.TagValueExpression.getType(TagValueExpression.java:73)
at org.primefaces.renderkit.InputRenderer.findImplicitConverter(InputRenderer.java:170)
at org.primefaces.renderkit.InputRenderer.findConverter(InputRenderer.java:190)
at org.primefaces.renderkit.InputRenderer.getConvertedValue(InputRenderer.java:196)
at javax.faces.component.UIInput.getConvertedValue(UIInput.java:624)
at javax.faces.component.UIInput.validate(UIInput.java:556)
at javax.faces.component.UIInput.processValidators(UIInput.java:247)
at org.apache.myfaces.context.servlet.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:533)
at org.apache.myfaces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:207)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:773)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:991)
at javax.faces.component.UIForm.visitTree(UIForm.java:269)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:793)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:991)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:793)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:991)
at org.apache.myfaces.context.servlet.PartialViewContextImpl.processPartialExecute(PartialViewContextImpl.java:362)
at org.apache.myfaces.context.servlet.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:342)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:88)
at javax.faces.component.UIViewRoot$ProcessValidatorPhaseProcessor.process(UIViewRoot.java:1394)
at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1282)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:758)
at org.apache.myfaces.lifecycle.ProcessValidationsExecutor.execute(ProcessValidationsExecutor.java:34)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)
这似乎是WebSphereApplicationServer的一个问题。有人知道这个问题吗？嗨，我遇到了类似的问题。这与eclipse（Rational）部署到服务器的方式有关。作为测试，将项目导出到war文件中，然后通过websphere管理控制台进行部署。顺便说一句，我用了eclipse和glassfish。你说得对。当我通过管理控制台部署导出的项目时，应用程序运行良好。你知道如何修复eclipse集成吗？不知道。我还没有真正看过它。对我来说，一个快速修复方法是在faces-config.xml中声明所有托管bean。但是，当然，这不应该发生在JSF2OK中，谢谢。我将尝试重新安装eclipse+WAS。您的托管bean没有作用域
@ManagedBean
public class DefaultComments implements Serializable {
private static final long serialVersionUID = 1L;
private String test = "test";
public String getTest() {
return test;
}
public void setTest(String test) {
this.test = test;
}
}
0000001c ErrorPageWrit E An exception occurred
javax.faces.FacesException: javax.el.PropertyNotFoundException: /control/index.xhtml at line 15 and column 55 value="#{defaultComments.test}": Target Unreachable, identifier 'defaultComments' resolved to null
at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.wrap(ExceptionHandlerImpl.java:241)
at org.apache.myfaces.shared_impl.context.ExceptionHandlerImpl.handle(ExceptionHandlerImpl.java:156)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:191)
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:1147)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:722)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:449)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1020)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:886)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1655)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:276)
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:1650)
Caused by: javax.el.PropertyNotFoundException: /control/index.xhtml at line 15 and column 55 value="#{defaultComments.test}": Target Unreachable, identifier 'defaultComments' resolved to null
at org.apache.myfaces.view.facelets.el.TagValueExpression.getType(TagValueExpression.java:73)
at org.primefaces.renderkit.InputRenderer.findImplicitConverter(InputRenderer.java:170)
at org.primefaces.renderkit.InputRenderer.findConverter(InputRenderer.java:190)
at org.primefaces.renderkit.InputRenderer.getConvertedValue(InputRenderer.java:196)
at javax.faces.component.UIInput.getConvertedValue(UIInput.java:624)
at javax.faces.component.UIInput.validate(UIInput.java:556)
at javax.faces.component.UIInput.processValidators(UIInput.java:247)
at org.apache.myfaces.context.servlet.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:533)
at org.apache.myfaces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:207)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:773)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:991)
at javax.faces.component.UIForm.visitTree(UIForm.java:269)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:793)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:991)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:793)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:991)
at org.apache.myfaces.context.servlet.PartialViewContextImpl.processPartialExecute(PartialViewContextImpl.java:362)
at org.apache.myfaces.context.servlet.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:342)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:88)
at javax.faces.component.UIViewRoot$ProcessValidatorPhaseProcessor.process(UIViewRoot.java:1394)
at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1282)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:758)
at org.apache.myfaces.lifecycle.ProcessValidationsExecutor.execute(ProcessValidationsExecutor.java:34)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)