title: javax.servlet.jsp.JspException: No getter method available for property
body: <p>I have this in the jsp file and it works: </p>
  
  <pre><code>&lt;display:column property="certificacion.estado"
                  title="CERTIFICACION"
                  sortable="true"/&gt;
  </code></pre>
  
  <p>but I want to display a html: select like this: </p>
  
  <pre><code>&lt;display:column title="CERTIFICACION"
                  sortable="true"&gt;
     &lt;html:select property="certificacion.estado" &gt;
        &lt;html:options property="id_estado"
                      labelProperty="estado"
                      collection="listaEstadosCertificacionDTO"/&gt;
     &lt;/html:select&gt;
  &lt;/display:column&gt;
  </code></pre>
  
  <p>but does not work, the errors says: </p>
  
  <blockquote>
    <p>No getter method available for property certificacion.estado for bean under name org.apache.struts.taglib.html.BEAN</p>
  </blockquote>
  
  <p>thanks!</p>