我有一个HIBERNATE DAOImpl，它使用以下方法，传递一个变量作为参数。

public List<Oportunidad> verParticipantes(String numeroOportunidad) throws DAOException {
    List<Oportunidad> lista = getHibernateTemplate().find("SELECT c.cliente FROM Oportunidad o ,OportunidadParticipante op,"
            + "Cliente c WHERE op.oportunidad=o.id and c.idCliente=op.cliente and o.numeroOportunidad=?",numeroOportunidad);
     return lista;
}

和ServiceImpl

public List<Oportunidad> verParticipantes(String numeroOportunidad)throws DAOException {    
    return getOportunidadDao().verParticipantes(numeroOportunidad);
}

这两个接口都使用。这些代码可以通过junit进行测试来编译和运行。Goog，非常好
问题是，当我想从selectOneListboxt传递参数时，它实现了一个JSF primefaces
代码ManagedBean：

public String getVerParticipantes(String numeroOportunidad) throws DAOException{
    Oportunidad o = new Oportunidad();
    o.setNumeroOportunidad(numeroOportunidad);
      verParticipantes.addAll(getOportunidadService().verParticipantes(numeroOportunidad));
    return  "envioCotizacion.xhtml";
}

JSF代码（. xhtml）：

<p:selectOneListbox id="listaCliente" value="#{clienteMB.cliente}"  style="width:26%; height:90%;  position:absolute; top:10%; left:12%;">   
                    <f:selectItems value='#{oportunidadMB.verParticipantes("prueba")}'/> 
                    <!--  <f:param name="numeroOportunidad" value="prueba" />-->
                    <p:ajax id="numeroOportunidad" listener='#{oportunidadMB.verParticipantes("prueba")}'></p:ajax> 
                </p:selectOneListbox>

错误屏幕：：：：：：：：：

javax.el.MethodNotFoundException: Unable to find method [verParticipantes] with [1] parameters
    at javax.el.BeanELResolver.invoke(BeanELResolver.java:444)
    at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:161)
    at org.apache.el.parser.AstValue.getValue(AstValue.java:173)
    at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
    at javax.faces.component.UISelectItems.getValue(UISelectItems.java:129)
    at org.primefaces.renderkit.InputRenderer.getSelectItems(InputRenderer.java:55)
    at org.primefaces.component.selectonelistbox.SelectOneListboxRenderer.encodeMarkup(SelectOneListboxRenderer.java:49)
    at org.primefaces.component.selectonelistbox.SelectOneListboxRenderer.encodeEnd(SelectOneListboxRenderer.java:42)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894)
    at org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:70)
    at org.primefaces.renderkit.CoreRenderer.renderChildren(CoreRenderer.java:57)
    at org.primefaces.component.layout.LayoutUnitRenderer.encodeEnd(LayoutUnitRenderer.java:51)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)

帮助我plis...不再做这个错误。