/*
 * rcbean.java
 *
 * Created on July 15, 2003, 12:21 AM
 */

package roberto;

import java.beans.*;

/**
 *
 * @author  Administrator
 */
public class rcbean extends Object implements java.io.Serializable {

    private static final String PROP_SAMPLE_PROPERTY = "PropiedadBasica";

    private String propiedadBasica = "Esta es la propiedad básica";

    private PropertyChangeSupport propertySupport;

    /** Creates new rcbean */
    public rcbean() {
propertySupport = new PropertyChangeSupport( this );
    }

    public String getPropiedadBasica() {
return propiedadBasica;
    }

    public void setPropiedadBasica(String value) {
String oldValue = propiedadBasica;
propiedadBasica = value;
propertySupport.firePropertyChange(PROP_SAMPLE_PROPERTY, oldValue, propiedadBasica);
    }


    public void addPropertyChangeListener(PropertyChangeListener listener) {
propertySupport.addPropertyChangeListener(listener);
    }

    public void removePropertyChangeListener(PropertyChangeListener listener) {
propertySupport.removePropertyChangeListener(listener);
    }

}

    

value='<%= request.getAttribute("valorpasado") %>' />

<% String sCadena = beansimple.getPropiedadBasica();
out.print("<b>Volvemos a mostrar la cadena </b><br>" + sCadena); 
%>

</body>
</html>

package roberto;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTag;
import javax.servlet.jsp.tagext.BodyTagSupport;
import javax.servlet.jsp.tagext.IterationTag;
import javax.servlet.jsp.tagext.Tag;
import javax.servlet.jsp.tagext.TagSupport;

public class RctagsimpleTag extends BodyTagSupport {
    private String parametro;

    public RctagsimpleTag() {
super();
    }

    public void otherDoStartTagOperations()  {
   try
   {
       JspWriter out = pageContext.getOut();
       String sParametro = pageContext.getRequest().getParameter(parametro);

       out.println("El parámetro en la tag es: " + sParametro);
   }
   catch (java.io.IOException ex)
   {
       // do something
   }
     }

   public boolean theBodyShouldBeEvaluated()  {
       return true;

    }

   public void otherDoEndTagOperations()  {

    }

    public boolean shouldEvaluateRestOfPageAfterEndTag()  {
     return true;

    }

public int doStartTag() throws JspException, JspException {
otherDoStartTagOperations();

if (theBodyShouldBeEvaluated()) {
    return EVAL_BODY_BUFFERED;
} else {
    return SKIP_BODY;
}
    }

   public int doEndTag() throws JspException, JspException {
otherDoEndTagOperations();

if (shouldEvaluateRestOfPageAfterEndTag()) {
    return EVAL_PAGE;
} else {
    return SKIP_PAGE;
}
    }

    public String getParametro() {
return parametro;
    }

    public void setParametro(String value) {
parametro = value;
    }

    public void writeTagBodyContent(JspWriter out, BodyContent bodyContent) throws IOException {
bodyContent.writeOut(out);
bodyContent.clearBody();
    }

   public void handleBodyContentException(Exception ex) throws JspException {
// Since the doAfterBody method is guarded, place exception handing code here.
throw new JspException("error in RctagsimpleTag: " + ex);
    }

  public int doAfterBody() throws JspException {
try {

    JspWriter out = getPreviousOut();
    BodyContent bodyContent = getBodyContent();

    writeTagBodyContent(out, bodyContent);
} catch (Exception ex) {
    handleBodyContentException(ex);
}

if (theBodyShouldBeEvaluatedAgain()) {
    return EVAL_BODY_AGAIN;
} else {
    return SKIP_BODY;
}
    }

  public boolean theBodyShouldBeEvaluatedAgain() {
       return false;
    }
}

// begin [file="/jspcontagsimple.jsp";from=(11,0);to=(11,46)]
/* ----  rc:rctagsimple ---- */
roberto.RctagsimpleTag _jspx_th_rc_rctagsimple_0 = new roberto.RctagsimpleTag();
_jspx_th_rc_rctagsimple_0.setPageContext(pageContext);
_jspx_th_rc_rctagsimple_0.setParent(null);
_jspx_th_rc_rctagsimple_0.setParametro("parametropasado");
try {
    int _jspx_eval_rc_rctagsimple_0 = _jspx_th_rc_rctagsimple_0.doStartTag();
    if (_jspx_eval_rc_rctagsimple_0 != javax.servlet.jsp.tagext.Tag.SKIP_BODY) {
try {
    if (_jspx_eval_rc_rctagsimple_0 != javax.servlet.jsp.tagext.Tag.EVAL_BODY_INCLUDE) {
      out = pageContext.pushBody();
      _jspx_th_rc_rctagsimple_0.setBodyContent((javax.servlet.jsp.tagext.BodyContent) out);
      _jspx_th_rc_rctagsimple_0.doInitBody();
  }
  do {
  // end
  // begin [file="/jspcontagsimple.jsp";from=(11,0);to=(11,46)]
  } while (_jspx_th_rc_rctagsimple_0.doAfterBody() == javax.servlet.jsp.tagext.BodyTag.EVAL_BODY_AGAIN);
      } finally {
  if (_jspx_eval_rc_rctagsimple_0 != javax.servlet.jsp.tagext.Tag.EVAL_BODY_INCLUDE)
      out = pageContext.popBody();
      }
  }
  if (_jspx_th_rc_rctagsimple_0.doEndTag() == javax.servlet.jsp.tagext.Tag.SKIP_PAGE)
      return;
      } finally {
  _jspx_th_rc_rctagsimple_0.release();
      }
  // end
  // HTML // begin [file="/jspcontagsimple.jsp";from=(11,46);to=(16,0)]

    

public void otherDoStartTagOperations()  {
   try
   {
       JspWriter out = pageContext.getOut();
       String sParametro = pageContext.getRequest().getParameter(parametro);
       String sParametroMayusculas = sParametro.toUpperCase();

       pageContext.setAttribute("valorsimple",sParametroMayusculas);
       
       out.println("El parámetro en la tag es: " + sParametro);
   }
   catch (java.io.IOException ex)
   {
       // do something
   }
     }
    

// begin [file="/jspcontagybean.jsp";from=(10,0);to=(10,70)]
java.lang.String valorsimple = null;
boolean _jspx_specialvalorsimple  = false;
 synchronized (pageContext) {
    valorsimple= (java.lang.String)pageContext.getAttribute("valorsimple",PageContext.PAGE_SCOPE);
    if ( valorsimple == null ) {
        _jspx_specialvalorsimple = true;
        try {
            valorsimple = (java.lang.String) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "java.lang.String");
        } catch (ClassNotFoundException exc) {
             throw new InstantiationException(exc.getMessage());
        } catch (Exception exc) {
             throw new ServletException (" Cannot create bean of class "+"java.lang.String", exc);
        }
        pageContext.setAttribute("valorsimple", valorsimple, PageContext.PAGE_SCOPE);
    }
 }