Netbeans告诉“未知属性"在< p:poll侦听器>上 [英] Netbeans tells "Unknown property" on <p:poll listener>

问题描述

我还没有弄清楚如何在不使用@PostContruct方法和初始化@页面创建的情况下动态调用/调用方法.

I havent worked out how to call/invoke a method dynamically without using the @PostContruct method and initialising @ the page creation.

此刻，我只是试图使Primeface p:poll示例正常工作.我现在将该方法放在自己的类中，以保持其清洁和简单.看起来像这样:

At the moment I am simply trying to get the primeface p:poll example working. I have placed the method in its own class for now to keep it clean and simple & looks like so:

    @ManagedBean(name="counterBean")
    @SessionScoped
    public class CounterBean implements Serializable {

    private int count;

    public int getCount() {  
        return count;  
    }  

    public void setCount(int count) {  
        this.count = count;  
    }  

    public void increment(ActionEvent actionEvent) {  
        setCount(getCount() + 1);  
    }  
} 

然后是xhtml代码:

And then the xhtml code:

    <h:form>
           <h:outputText id="txt_count" value="#{counterBean.count} " />      
           <p:poll interval="3" listener="#{counterBean.increment}" update="txt_count"/>
</h:form> 

netbeans中的智能感知告诉我#{counterBean.increment}的增量"部分是未知属性"，即找不到该方法.那么，如何让JSF识别并从xhtml调用此方法?

Intellisense within netbeans tells me that the "increment" part of #{counterBean.increment} is an "Unknown Property" i.e. it cant find the method. So how can I get JSF to recognise and invoke this method from the xhtml?

推荐答案

p:poll组件经过一番摸索之后，略微改写了primefaces demo&手动的.将p:poll侦听器更改为actionListener:

Well after a some head scratching the p:poll component started working after a slight adaptation from the primefaces demo & manual. Change the p:poll listener to actionListener:

 <h:form>
           <h:outputText id="txt_count" value="#{counterBean.count} " />      
           <p:poll interval="3" actionListener="#{counterBean.increment}" update="txt_count"/>
</h:form>

还要确保您的html页面/模板被<f:view contentType="text/html">标记包围

Also ensure that your html page/template is surrounded by the <f:view contentType="text/html"> tag

希望这可以帮助某人&感谢BalusC在调试方面的帮助.

Hope this helps someone & thanks to BalusC for his help in debugging this.

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