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I am new on Hibernate

 
matias casal
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Posts: 61
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Hello,
I am from Argentina, sorry for my ugly English.
I am starting with hibernate, and i had the following error:

Estado de HTTP 500 -
type Informe de excepción

Mensaje
DescripciónEl servidor encontró un error interno () que impide satisfacer la solicitud.

Excepción
org.apache.jasper.JasperException: javax.el.ELException: org.hibernate.InvalidMappingException: Could not parse mapping document from resource model/Alumno.hbm.xml

Causa principal
javax.el.ELException: org.hibernate.InvalidMappingException: Could not parse mapping document from resource model/Alumno.hbm.xml

Causa principal
org.hibernate.InvalidMappingException: Could not parse mapping document from resource model/Alumno.hbm.xml

Causa principal
org.hibernate.DuplicateMappingException: Duplicate class/entity mapping model.Alumno


I looked at hibernate.cfg.xml and i didnt find any error


Then, I looked at my alumno.hbm.xml and i couldn t find anything


Here is the error log
eading mappings from resource : model/Alumno.hbm.xml
duplicate import: model.Alumno->model.Alumno
duplicate import: model.Alumno->Alumno
Mapping class: model.Alumno -> alumnos
StandardWrapperValve[jsp]: PWC1406: Servlet.service() para el servlet jsp desencadenó una excepción
javax.el.ELException: org.hibernate.InvalidMappingException: Could not parse mapping document from resource model/Alumno.hbm.xml
at javax.el.BeanELResolver.getValue(BeanELResolver.java:266)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
at com.sun.el.parser.AstValue.getValue(AstValue.java:138)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:206)
at org.apache.jasper.runtime.PageContextImpl.evaluateExpression(PageContextImpl.java:984)
at org.apache.jsp.index_jsp._jspx_meth_c_forEach_0(index_jsp.java from :144)
at org.apache.jsp.index_jsp._jspService(index_jsp.java from :85)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:288)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)
at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
at com.sun.enterprise.web.portunif.PortUnificationPipeline$PUTask.doTask(PortUnificationPipeline.java:380)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource model/Alumno.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:569)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1587)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1555)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1534)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1508)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1428)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
at model.AlumnoHibernate.devuelvaTodo(AlumnoHibernate.java:21)
at model.ServicioAlumno.getTodosAlumnos(ServicioAlumno.java:23)
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:597)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:261)
... 44 more
Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping model.Alumno
at org.hibernate.cfg.Mappings.addClass(Mappings.java:118)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:145)
at org.hibernate.cfg.Configuration.add(Configuration.java:669)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:504)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:566)
... 57 more
Sorry for my English,
And thank you for everything!
 
David Newton
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Posts: 12617
IntelliJ IDE Ruby
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You map Alumno twice.
 
matias casal
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Posts: 61
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Oh thank you
It was the problem!
 
David Newton
Author
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Posts: 12617
IntelliJ IDE Ruby
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You're welcome, and welcome to JavaRanch :)
 
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