Eu to precisando de ajuda em uma aplicação que eu to fazendo usando o Jasper, eu to usando o seguinte metodo para chamar o Arquivo:
public void GeraReceituario()
{
JasperReport caminho = null;
String doenca = rel_doenca.getSelectedItem().toString();
try {
caminho = (JasperReport) JRLoader.loadObject(getClass().getClassLoader().getResource("Receitas.jasper"));
} catch (JRException ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
}
Map parametros = new HashMap();
parametros.put("rel_doenca",doenca);
parametros.put("rel_tratamento",rel_tratamento);
parametros.put("rel_obs",rel_obs);
JasperPrint impressao = new JasperPrint();
try {
impressao = JasperFillManager.fillReport(caminho ,parametros);
JasperViewer viewer = new JasperViewer(impressao, true);
viewer.setVisible(true);
JasperViewer.viewReport(impressao,false);
} catch (JRException e) {
System.out.println(e.getMessage());
}
}
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at Receituario.GeraReceituario(Receituario.java:32)
at Receituario.jButton4ActionPerformed(Receituario.java:182)
at Receituario.access$300(Receituario.java:21)
at Receituario$4.actionPerformed(Receituario.java:122)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6038)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
at java.awt.Component.processEvent(Component.java:5803)
at java.awt.Container.processEvent(Container.java:2058)
at java.awt.Component.dispatchEventImpl(Component.java:4410)
at java.awt.Container.dispatchEventImpl(Container.java:2116)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
at java.awt.Container.dispatchEventImpl(Container.java:2102)
at java.awt.Window.dispatchEventImpl(Window.java:2429)
at java.awt.Component.dispatchEvent(Component.java:4240)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Alguem sabe como eu faço para resolver esse problema....
Vlw