Estoy agregando una imagen a un archivo de Excel, cuando lo ejecuto desde eclipse, la imagen se agrega correctamente. Pero al generar el jar lanza una excepción indicando que no puede encontrar el recurso. Aquí el código para hacer la inserción. Agregar una imagen desde un jar.

 public void agregarImagenEncabezado(Sheet hoja, double x, double y,
   double width, double heigh, String rutaImagen)
   throws WriteException, IOException {

  InputStream is = this.getClass().getResourceAsStream(rutaImagen);

  // add picture data to this workbook.
  byte[] bytes = IOUtils.toByteArray(is);
  int pictureIdx = libro.addPicture(bytes, Workbook.PICTURE_TYPE_JPEG);
  is.close();

  CreationHelper helper = libro.getCreationHelper();

  // Create the drawing patriarch. This is the top level container for all
  // shapes.
  Drawing drawing = hoja.createDrawingPatriarch();

  // add a picture shape
  ClientAnchor anchor = helper.createClientAnchor();
  // set top-left corner of the picture,
  // subsequent call of Picture#resize() will operate relative to it
  anchor.setCol1((int)x);
  anchor.setRow1((int)y);
  Picture pict = drawing.createPicture(anchor, pictureIdx);

  // auto-size picture relative to its top-left corner
  pict.resize();
 }

Hibernate is not mapped

Trabajando en una aplicación que por azares del destino está con varias tecnologías de persistencia, entre algunos sabores: JDBC, Hibernate y ultimamente JPA, no me pregunten porqué, pero se tienen dos lugares donde se crean Entities, uno legado y otro donde se quiere unificar y poner orden. Una de las tareas fue migrar un Entity para que poco a poco se vayan teniendo en un sólo lugar dentro de la Nueva estructura, sin embargo al ejecutar la aplicación lanzaba este problema:

java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: andres is not mapped [SELECT CC FROM andres CC WHERE CC.gubernamentales=:guber  AND CC.mercado=:mercado]
 at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1364)
 at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1300)
 at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:309)
 at asar.analitics.db.hibernate.dao.impl.CalifConsarDAOImpl.getAllInstrumentoNoGubernamental(CalifConsarDAOImpl.java:232)
 at asar.analitics.service.impl.CalifConsarServiceImpl.getAllCalifConsarNoGubernamental(CalifConsarServiceImpl.java:50)
 at asar.analitics.vista.regimen.EsperanzaPerdidaScroolPane.calculaEsperanzaPerdida(EsperanzaPerdidaScroolPane.java:201)
 at asar.analitics.vista.regimen.EsperanzaPerdidaScroolPane.calculateAll(EsperanzaPerdidaScroolPane.java:169)
 at asar.analitics.vista.regimen.EsperanzaPerdidaScroolPane.getTablaEsperanzaPerdida(EsperanzaPerdidaScroolPane.java:323)
 at asar.analitics.Regimen.initComponents(Regimen.java:20911)
 at asar.analitics.Regimen.(Regimen.java:672)
 at asar.analitics.Menu$105.actionPerformed(Menu.java:1811)
 at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
 at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
 at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
 at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
 at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
 at java.awt.Component.processMouseEvent(Unknown Source)
 at javax.swing.JComponent.processMouseEvent(Unknown Source)
 at java.awt.Component.processEvent(Unknown Source)
 at java.awt.Container.processEvent(Unknown Source)
 at java.awt.Component.dispatchEventImpl(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Window.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
 at java.awt.EventQueue.access$200(Unknown Source)
 at java.awt.EventQueue$3.run(Unknown Source)
 at java.awt.EventQueue$3.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
 at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
 at java.awt.EventQueue$4.run(Unknown Source)
 at java.awt.EventQueue$4.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
 at java.awt.EventQueue.dispatchEvent(Unknown Source)
 at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
 at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
 at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
 at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
 at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: andres is not mapped [SELECT CC FROM andres CC WHERE CC.gubernamentales=:guber  AND CC.mercado=:mercado]
 at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:180)
 at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:110)
 at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:93)
 at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:324)
 at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3291)
 at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3180)
 at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:706)
 at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:562)
 at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:299)
 at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:247)
 at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:248)
 at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:183)
 at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
 at org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:105)
 at org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:80)
 at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:168)
 at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:221)
 at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:199)
 at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1735)
 at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:301)
 ... 44 more

La solución fue poner en el persistence XML las siguientes lineas:

             org.hibernate.ejb.HibernatePersistence
             
             entities.CalifConsarEnt
             entities.CalifEmisorEnt
             entities.CatGruposEmisorEnt
             
             
                    
                    
                    
                    
                    
                    
             
       

Puesto que las entidades van anotadas, las lineas entities.CalifConsarEnt, hacen que el EntityManager reconozca la ubicación de la nuevas clases, pues de manera automática no sabe donde encontrarlas.

@Entity
@Table(name="CALIF_CONSAR")
public class CalifConsarEnt {
 @Id
 @Column(name="INSTRUMENTO")
.
.
.

Espero que la solución le sirva. Cortesía de Vianey Reyes @VianeyItzayana