Error in @in EntityManager
lgweb Oct 19, 2009 5:20 PMhave possessions when using the seam, I began a new project using seamProject on jbossDeveloperStudio have a they give that extende of they give generic, and in my controller use this they give with the annotation @ in of the seam see my code
# public abstract class DaoGeneric<T, ID extends Serializable> implements IDaoGeneric<T, ID> { # # @In(create=true,value="entityManager") # private EntityManager entityManager ; # # private Class<T> classe; # # # public void salvar(T objeto) { # try { # objeto =entityManager.merge(objeto); # } catch (StaleStateException e) { # e.printStackTrace(); # } # catch(ConstraintViolationException e){ # e.printStackTrace(); # } # catch (HibernateException e) { # # e.printStackTrace(); # } # } My DAO # @Name("daoCargo") # public class DaoCargo extends DaoGeneric<Cargo, Long> implements IdaoCargo { # # public DaoCargo(){ # super(); # # } my Controller 1. package br.com.lgweb.controller.genericController; 2. 3. /* 4. * To change this template, choose Tools | Templates 5. * and open the template in the editor. 6. */ 7. 8. 9. import br.com.lgweb.controller.interfaces.CargoBean; 10. import br.com.lgweb.dao.genericDao.IDaoGeneric; 11. import br.com.lgweb.geral.entity.Cargo; 12. import br.com.lgweb.interfaces.dao.IdaoCargo; 13. import br.com.lgweb.jpaDao.DaoCargo; 14. 15. import java.io.Serializable; 16. import java.util.List; 17. import javax.ejb.Remove; 18. import javax.ejb.Stateful; 19. 20. import javax.persistence.EntityManager; 21. import javax.persistence.PersistenceContext; 22. import org.jboss.seam.ScopeType; 23. import org.jboss.seam.annotations.Begin; 24. import org.jboss.seam.annotations.Destroy; 25. import org.jboss.seam.annotations.End; 26. import org.jboss.seam.annotations.Factory; 27. import org.jboss.seam.annotations.In; 28. import org.jboss.seam.annotations.Name; 29. import org.jboss.seam.annotations.Out; 30. import org.jboss.seam.annotations.Scope; 31. import org.jboss.seam.annotations.datamodel.DataModel; 32. import org.jboss.seam.annotations.datamodel.DataModelSelection; 33. import org.jboss.seam.faces.FacesMessages; 34. 35. 36. /** 37. * 38. * @author godoy 39. */ 40. 41. @Name("controlCargo") 42. @Scope(ScopeType.SESSION) 43. public class ControlCargoBean implements CargoBean, Serializable { 44. 45. 46. @In(create = true) 47. private transient FacesMessages facesMessages; 48. 49. @In 50. private Cargo cargo; 51. 52. @DataModel 53. @Out(required = false) 54. private List<Cargo> cargos; 55. 56. @In(create=true,value="daoCargo") 57. private DaoCargo daoCargo ; 58. 59. @DataModelSelection 60. @Out(required=false,scope=ScopeType.SESSION) 61. private Cargo selectedCargo; 62. 63. public String excluir() { 64. daoCargo.excluir(cargo); 65. return "sucessDelete"; 66. } 67. 68. @Factory("cargos") 69. public void listarTodos() { 70. cargos = daoCargo.listarTodos(); 71. 72. } 73. 74. 75. public String editar() { 76. cargo = daoCargo.findObjeto(cargo.getId()); 77. if (cargo != null) { 78. return "editCargo"; 79. } else { 80. facesMessages.addFromResourceBundle("entityNotFound"); 81. } 82. return null; 83. } 84. 85. 86. public String salvar() { 87. daoCargo.salvar(cargo); 88. return "cargoPersist"; 89. } 90. 91. @Destroy 92. @Remove 93. public void destroy() { 94. } 95. 96. public Cargo getCargo() { 97. return cargo; 98. } 99. 100. public void setCargo(Cargo cargo) { 101. this.cargo = cargo; 102. } 103. } The Error # 22:05:00,640 ERROR [application] org.jboss.seam.RequiredException: @In attribute requires non-null value: daoCargo.entityManager # javax.faces.el.EvaluationException: org.jboss.seam.RequiredException: @In attribute requires non-null value: daoCargo.entityManager # at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) # at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) # at javax.faces.component.UICommand.broadcast(UICommand.java:387) # at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321) # at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:296) # at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253) # at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:466) # at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82) # at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) # at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) # at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265) # at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) # at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) # at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) # at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) # at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) # at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) # at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) # at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) # at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) # at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) # at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) # at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178) # at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) # at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368) # at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495) # at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56) # at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) # at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60) # at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) # at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) # at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) # at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) # at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) # at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) # at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) # at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) # at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173) # at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) # at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) # at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) # at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) # at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) # at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) # at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) # at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241) # at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) # at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) # at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) # at java.lang.Thread.run(Unknown Source) # Caused by: org.jboss.seam.RequiredException: @In attribute requires non-null value: daoCargo.entityManager
Excuse, I am using a language translator
What cause this mistake type? any help and well arrival. Thank you.