English 中文(简体)
JSF 2.1 valid Bean 总是在投标前被传唤 观点活动
原标题:JSF 2.1 validateBean always called before preRenderView event

试图使用动态验证小组

<h:inputText id="id" value="#{bean.char}" maxlength="8" alt="#{bean.displayName}">
        <f:validateBean
                validationGroups="#{bean.validationGroup}" />
</h:inputText>

However the #{bean.validationGroup} is always called before the

<f:event type="preRenderView" listener="#{bean.initView}" />

难道这是我方言中的ug吗? 我们需要有标准。 由于投标前装货组和验证组的数据不同,因此在投标前调查后发出呼吁。 采用Myfaces 2.1.5, 内容丰富。

最佳回答

这确实是具体的行为。 <代码><f:xxx> 纵观时期的争tag会形成时间。 如果你想在建立观点之前先启动财产,那么,你需要以海底的(后)施工方法从事这项工作。 预先判断,观察活动在发表意见之前是正确的,但在意见形成之后很久。

Remove the <f:event> all and make the initView a @PostConstruct approach.

@PostConstruct
public void initView() {
    // ...
}

该系统将直接运行,然后建造和完成所有附属注射,例如@ManagedProperty,@Inject,@EJB等。

问题回答
@ManagedBean
@XScoped --sessionScope,viewScope   
Public class Bean{
 public void initView(){
    if (!FacesContext.getCurrentInstance().isPostback(){
    //put initView codes here
    }
  }

}




相关问题
Spring Properties File

Hi have this j2ee web application developed using spring framework. I have a problem with rendering mnessages in nihongo characters from the properties file. I tried converting the file to ascii using ...

Logging a global ID in multiple components

I have a system which contains multiple applications connected together using JMS and Spring Integration. Messages get sent along a chain of applications. [App A] -> [App B] -> [App C] We set a ...

Java Library Size

If I m given two Java Libraries in Jar format, 1 having no bells and whistles, and the other having lots of them that will mostly go unused.... my question is: How will the larger, mostly unused ...

How to get the Array Class for a given Class in Java?

I have a Class variable that holds a certain type and I need to get a variable that holds the corresponding array class. The best I could come up with is this: Class arrayOfFooClass = java.lang....

SQLite , Derby vs file system

I m working on a Java desktop application that reads and writes from/to different files. I think a better solution would be to replace the file system by a SQLite database. How hard is it to migrate ...

热门标签