我的代码如下:
<h:commandButton type="submit" action="#{clController.getPaymentByMonth(clController.type)}" id="stateInfo" value="Show Monthly " >
<f:actionListener binding="#{clController.getTotal(clController.type)}" />
</h:commandButton>
当我添加<f:actionListener binding="
时,它会出现以下错误:
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:114)
at com.sun.faces.facelets.tag.jsf.core.ActionListenerHandler$LazyActionListener.processAction(ActionListenerHandler.java:112)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
这是我的getTotal函数:
List<CustomerPayment> total = null;
try {
org.hibernate.Transaction tx = session.beginTransaction();
Query q = session.createQuery("SELECT SUM(amount) from CustomerPayment where DATE like '%"+year+"' GROUP BY type");
total = (List<CustomerPayment>) q.list();
} catch (Exception e) {
e.printStackTrace();
}
return totalDataTable = new ListDataModel(total);
可能是什么问题?
答案 0 :(得分:2)
问题在于actionListener
的{{1}}属性的值 - 它应该指向一个实现binding
接口的对象 - 而不是你的情况下的方法调用。 / p>
来自JSF规范:
值绑定表达式,其求值为实现javax.faces.event.ActionListener的对象。