4 Replies Latest reply on Oct 29, 2006 12:36 AM by Barry Sheward

    error : In attribute requires value for component , why ?

    li miao Newbie

      Content.java

      package com.vsoft.aixinweb.view ;
      
      import java.util.Date;
      
      import javax.ejb.Stateless;
      import javax.faces.context.FacesContext;
      
      import org.jboss.seam.ScopeType;
      import org.jboss.seam.annotations.In;
      import org.jboss.seam.annotations.Logger;
      import org.jboss.seam.annotations.Name;
      import org.jboss.seam.annotations.Scope;
      import org.jboss.seam.log.Log;
      
      import com.vsoft.aixinweb.persistent.dao.ContentDaoImpl;
      import com.vsoft.aixinweb.persistent.model.Content;
      
      /**
       * @author Eddie L
       *
       */
      @ Stateless
      @ Name ( "contentAction" )
      @Scope(ScopeType.EVENT)
      public class ContentAction implements IfContentAction
      {
       @ In
       private Content content ;
      
       @ In
       private ContentDaoImpl contentDaoImpl ;
      
       @ In
       private FacesContext facesContext ;
      
       @ Logger
       private Log log ;
      
       /* (non-Javadoc)
       * @see com.vsoft.aixinweb.view.IfContentAction#addContent()
       */
       public String addContent()
       {
       content.setCreateDate ( new Date() );
       contentDaoImpl.insertContent ( this.content );
       return "success";
       }
      
       public void setContentDaoImpl ( ContentDaoImpl contentDaoImpl )
       {
       this.contentDaoImpl = contentDaoImpl ;
       }
      
      }
      



      ContentDaoImpl.java
      package com.vsoft.aixinweb.persistent.dao ;
      
      import java.util.Iterator;
      import java.util.List;
      import java.util.Map;
      
      import javax.ejb.Stateless;
      import javax.persistence.EntityManager;
      import javax.persistence.PersistenceContext;
      import javax.persistence.Query;
      
      import org.jboss.seam.ScopeType;
      import org.jboss.seam.annotations.Logger;
      import org.jboss.seam.annotations.Name;
      import org.jboss.seam.annotations.Scope;
      import org.jboss.seam.log.Log;
      
      import com.vsoft.aixinweb.persistent.model.Content;
      
      /**
       * @author Eddie L
       *
       */
      @ Stateless
      @ Name ( "contentDaoImpl" )
      @Scope(ScopeType.APPLICATION)
      public class ContentDaoImpl implements ContentDao
      {
      
       @ PersistenceContext
       private EntityManager em ;
      
       @ Logger
       private Log log ;
      
       public void delContent ( Content content )
       {
       log.info ( "ContentDaoImpl delContent content.id : "
       + content.getId ( ).toString ( ) ) ;
       em.remove ( content ) ;
       }
      
       public Content getOneRecord ( String id )
       {
       Query q = em.createQuery ( "from Content c where c.id = ?1" ) ;
       q.setParameter ( 1 , id ) ;
       return ( Content ) q.getSingleResult ( ) ;
       }
      
       public List < Content > getRecord ( String sql ,
       Map < String , Object > filter , int ... is )
       {
       Query q = em.createQuery ( sql ) ;
       Iterator iterator = filter.keySet ( ).iterator ( ) ;
       while ( iterator.hasNext ( ) )
       {
       String element = ( String ) iterator.next ( ) ;
       q.setParameter ( element , filter.get ( element ) ) ;
       }
       if ( is.length > 0 )
       {
       q.setFirstResult ( is [ 0 ] ) ;
       q.setMaxResults ( is [ 1 ] ) ;
       }
      
       return q.getResultList ( );
       }
      
       public void insertContent ( Content content )
       {
       em.persist ( content ) ;
       }
      
       public void updateContent ( Content content )
       {
       em.merge ( content ) ;
       }
      
      }
      



      interface ContentDao.java
      package com.vsoft.aixinweb.persistent.dao;
      
      import java.util.List;
      import java.util.Map;
      
      import javax.ejb.Local;
      
      import com.vsoft.aixinweb.persistent.model.Content;
      
      /**
       * @author Eddie L
       *
       */
      @Local
      public interface ContentDao
      {
       public void insertContent(Content content);
      
       public void updateContent(Content content);
      
       public void delContent(Content content);
      
      
       public Content getOneRecord(String id);
      
      
       public List<Content> getRecord(String sql, Map<String, Object> filter, int ...is );
      
      
      }
      


      interface IfContentAction.java
      package com.vsoft.aixinweb.view ;
      
      import javax.ejb.Local;
      
      @Local
      public interface IfContentAction
      {
      
       public String addContent ( ) ;
      
      }



      ContentAction.java
      package com.vsoft.aixinweb.view ;
      
      import java.util.Date;
      
      import javax.ejb.Stateless;
      import javax.faces.context.FacesContext;
      
      import org.jboss.seam.ScopeType;
      import org.jboss.seam.annotations.In;
      import org.jboss.seam.annotations.Logger;
      import org.jboss.seam.annotations.Name;
      import org.jboss.seam.annotations.Scope;
      import org.jboss.seam.log.Log;
      
      import com.vsoft.aixinweb.persistent.dao.ContentDaoImpl;
      import com.vsoft.aixinweb.persistent.model.Content;
      
      /**
       * @author Eddie L
       *
       */
      @ Stateless
      @ Name ( "contentAction" )
      @Scope(ScopeType.EVENT)
      public class ContentAction implements IfContentAction
      {
       @ In
       private Content content ;
      
       @ In
       private ContentDaoImpl contentDaoImpl ;
      
       @ In
       private FacesContext facesContext ;
      
       @ Logger
       private Log log ;
      
       /* (non-Javadoc)
       * @see com.vsoft.aixinweb.view.IfContentAction#addContent()
       */
       public String addContent()
       {
       content.setCreateDate ( new Date() );
       contentDaoImpl.insertContent ( this.content );
       return "success";
       }
      
       public void setContentDaoImpl ( ContentDaoImpl contentDaoImpl )
       {
       this.contentDaoImpl = contentDaoImpl ;
       }
      
      }


      test.jsp

      <h:commandButton styleClass="formButton" type="submit" value="OK"
       action="#{contentAction.addContent}" />


      javax.servlet.ServletException: Error calling action method of component with id _id6:_id26
      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:121)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:45)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
      at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
      at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
      at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
      at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
      at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
      at java.lang.Thread.run(Thread.java:595)
      11:16:36,015 INFO [SeamExceptionFilter] killing transaction
      11:16:36,015 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
      javax.faces.FacesException: Error calling action method of component with id _id6:_id26
      at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
      at javax.faces.component.UICommand.broadcast(UICommand.java:106)
      at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90)
      at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164)
      at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:316)
      at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
      at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:45)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
      at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
      at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
      at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
      at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
      at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
      at java.lang.Thread.run(Thread.java:595)
      Caused by: javax.faces.el.EvaluationException: /test.xhtml @59,45 action="#{contentAction.addContent}": javax.ejb.EJBTransactionRolledbackException: org.jboss.seam.RequiredException: In attribute requires value for component: contentAction.contentDaoImpl
      at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
      at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
      ... 30 more
      Caused by: javax.ejb.EJBTransactionRolledbackException: org.jboss.seam.RequiredException: In attribute requires value for component: contentAction.contentDaoImpl
      at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:93)
      at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)
      at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:201)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:181)
      at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
      at $Proxy114.addContent(Unknown Source)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at com.sun.el.parser.AstValue.invoke(AstValue.java:151)
      at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
      at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
      at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:69)
      ... 31 more
      Caused by: org.jboss.seam.RequiredException: In attribute requires value for component: contentAction.contentDaoImpl
      at org.jboss.seam.Component.getInstanceToInject(Component.java:1382)
      at org.jboss.seam.Component.injectFields(Component.java:1024)
      at org.jboss.seam.Component.inject(Component.java:795)
      at org.jboss.seam.interceptors.BijectionInterceptor.bijectTargetComponent(BijectionInterceptor.java:30)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.seam.util.Reflections.invoke(Reflections.java:13)
      at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90)
      at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60)
      at org.jboss.seam.interceptors.ConversationInterceptor.endOrBeginLongRunningConversation(ConversationInterceptor.java:82)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.seam.util.Reflections.invoke(Reflections.java:13)
      at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90)
      at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60)
      at org.jboss.seam.interceptors.BusinessProcessInterceptor.manageBusinessProcessContext(BusinessProcessInterceptor.java:60)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.seam.util.Reflections.invoke(Reflections.java:13)
      at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90)
      at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60)
      at org.jboss.seam.interceptors.RemoveInterceptor.removeIfNecessary(RemoveInterceptor.java:39)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.seam.util.Reflections.invoke(Reflections.java:13)
      at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90)
      at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60)
      at org.jboss.seam.ejb.SeamInterceptor.aroundInvokeInContexts(SeamInterceptor.java:73)
      at org.jboss.seam.ejb.SeamInterceptor.aroundInvoke(SeamInterceptor.java:45)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
      at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
      at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:126)
      ... 54 more



      how can i do ?