com.sun.faces.mgbean.ManagedBeanCreationException：无法实例化类：com.b2c.web.beans.hotel.HotelSearchResultsBean

Question

如何找出异常投掷的地方？

  

com.sun.faces.mgbean.ManagedBeanCreationException：无法实例化类：com.b2c.web.beans.hotel.HotelSearchResultsBean。

样本堆栈跟踪

       com.sun.faces.mgbean.BeanBuilder.newBeanInstance (Unknown Source)

                 com.sun.faces.mgbean.BeanBuilder.build (Unknown Source)

         com.sun.faces.mgbean.BeanManager.createAndPush (Unknown Source)

                com.sun.faces.mgbean.BeanManager.create (Unknown Source)

     com.sun.faces.el.ManagedBeanELResolver.resolveBean (Unknown Source)

        com.sun.faces.el.ManagedBeanELResolver.getValue (Unknown Source)

    com.sun.faces.el.DemuxCompositeELResolver._getValue (Unknown Source)

     com.sun.faces.el.DemuxCompositeELResolver.getValue (Unknown Source)

               com.sun.el.parser.AstIdentifier.getValue (AstIdentifier.java:116)

                     com.sun.el.parser.AstValue.getBase (AstValue.java:151)

                    com.sun.el.parser.AstValue.getValue (AstValue.java:200)

                com.sun.el.ValueExpressionImpl.getValue (ValueExpressionImpl.java:226)

         org.jboss.weld.el.WeldValueExpression.getValue (WeldValueExpression.java:50)

         org.jboss.weld.el.WeldValueExpression.getValue (WeldValueExpression.java:50)

….sun.faces.facelets.el.ELText$ELTextVariable.writeText (Unknown Source)

…sun.faces.facelets.el.ELText$ELTextComposite.writeText (Unknown Source)

  com.sun.faces.facelets.compiler.TextInstruction.write (Unknown Source)

…sun.faces.facelets.compiler.UIInstructions.encodeBegin (Unknown Source)

       com.sun.faces.facelets.compiler.UILeaf.encodeAll (Unknown Source)

            javax.faces.component.UIComponent.encodeAll (Unknown Source)

            javax.faces.component.UIComponent.encodeAll (Unknown Source)

…pplication.view.FaceletViewHandlingStrategy.renderView (Unknown Source)

…sun.faces.application.view.MultiViewHandler.renderView (Unknown Source)

org.ocpsoft.rewrite.faces.RewriteViewHandler.renderView (RewriteViewHandler.java:186)

  javax.faces.application.ViewHandlerWrapper.renderView (Unknown Source)

  javax.faces.application.ViewHandlerWrapper.renderView (Unknown Source)

  javax.faces.application.ViewHandlerWrapper.renderView (Unknown Source)

    com.sun.faces.lifecycle.RenderResponsePhase.execute (Unknown Source)

                  com.sun.faces.lifecycle.Phase.doPhase (Unknown Source)

           com.sun.faces.lifecycle.LifecycleImpl.render (Unknown Source)

                javax.faces.webapp.FacesServlet.service (Unknown Source)

…undertow.servlet.handlers.ServletHandler.handleRequest (ServletHandler.java:85)

…ervlet.handlers.FilterHandler$FilterChainImpl.doFilter (FilterHandler.java:130)

     org.ocpsoft.rewrite.servlet.RewriteFilter.doFilter (RewriteFilter.java:205)

        io.undertow.servlet.core.ManagedFilter.doFilter (ManagedFilter.java:60)

…ervlet.handlers.FilterHandler$FilterChainImpl.doFilter (FilterHandler.java:132)

….undertow.servlet.handlers.FilterHandler.handleRequest (FilterHandler.java:85)

…lers.security.ServletSecurityRoleHandler.handleRequest (ServletSecurityRoleHandler.java:61)

…rvlet.handlers.ServletDispatchingHandler.handleRequest (ServletDispatchingHandler.java:36)

…curity.SecurityContextAssociationHandler.handleRequest (SecurityContextAssociationHandler.java:78)

…ndertow.server.handlers.PredicateHandler.handleRequest (PredicateHandler.java:43)

…ecurity.SSLInformationAssociationHandler.handleRequest (SSLInformationAssociationHandler.java:131)

…ecurity.ServletAuthenticationCallHandler.handleRequest (ServletAuthenticationCallHandler.java:56)

…ndertow.server.handlers.PredicateHandler.handleRequest (PredicateHandler.java:43)

….handlers.AbstractConfidentialityHandler.handleRequest (AbstractConfidentialityHandler.java:45)

….ServletConfidentialityConstraintHandler.handleRequest (ServletConfidentialityConstraintHandler.java:63)

…handlers.AuthenticationMechanismsHandler.handleRequest (AuthenticationMechanismsHandler.java:58)

…curity.CachedAuthenticatedSessionHandler.handleRequest (CachedAuthenticatedSessionHandler.java:70)

…security.handlers.SecurityInitialHandler.handleRequest (SecurityInitialHandler.java:76)

…ndertow.server.handlers.PredicateHandler.handleRequest (PredicateHandler.java:43)

…ertow.security.jacc.JACCContextIdHandler.handleRequest (JACCContextIdHandler.java:61)

…ndertow.server.handlers.PredicateHandler.handleRequest (PredicateHandler.java:43)

…ndertow.server.handlers.PredicateHandler.handleRequest (PredicateHandler.java:43)

…vlet.handlers.ServletInitialHandler.handleFirstRequest (ServletInitialHandler.java:261)

…servlet.handlers.ServletInitialHandler.dispatchRequest (ServletInitialHandler.java:247)

…rtow.servlet.handlers.ServletInitialHandler.access$000 (ServletInitialHandler.java:76)

…servlet.handlers.ServletInitialHandler$1.handleRequest (ServletInitialHandler.java:166)

       io.undertow.server.Connectors.executeRootHandler (Connectors.java:197)

            io.undertow.server.HttpServerExchange$1.run (HttpServerExchange.java:764)

      java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1142)

     java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:617)

                                   java.lang.Thread.run (Thread.java:745)


caused by java.lang.NullPointerException