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Jsf “动态”；至于；属性：工具提示无法按预期工作

jsf primefaces

Jsf “动态”；至于；属性：工具提示无法按预期工作,jsf,primefaces,tooltip,Jsf,Primefaces,Tooltip,我试图在ui:repeat循环中将tooptip附加到commandbutton。我还动态创建commandbutton的id和工具提示的“for”属性。这会产生以下错误： HTTP Status 500 - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exc

我试图在ui:repeat循环中将tooptip附加到commandbutton。我还动态创建commandbutton的id和工具提示的“for”属性。这会产生以下错误：

    HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Cannot find component "a_test" in view.
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:325)
    org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
root cause

javax.faces.FacesException: Cannot find component "a_test" in view.
    org.primefaces.component.tooltip.TooltipRenderer.getTarget(TooltipRenderer.java:93)
    org.primefaces.component.tooltip.TooltipRenderer.encodeScript(TooltipRenderer.java:66)
    org.primefaces.component.tooltip.TooltipRenderer.encodeEnd(TooltipRenderer.java:35)
    javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:883)
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:1659)
    com.sun.faces.facelets.component.RepeatRenderer.encodeChildren(RepeatRenderer.java:104)
    com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:504)
    com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:958)
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:1652)
    javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
    javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:853)
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:1652)
    javax.faces.component.UIComponent.encodeAll(UIComponent.java:1655)
    com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:399)
    com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
    com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)
    com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:313)
    org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.12 logs.

Apache Tomcat/7.0.12
我的jsf如下所示：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:p="http://primefaces.org/ui"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets">

<h:head></h:head>
<h:form id="MyForm">
    <ui:repeat var="rs"
        value="#{rezervasyonBean.rezervasyonSaatleriListesi}">
        <p:commandButton action="#" value="#{rs.saatAraligi}"
            update="@form" 
            id="#{rs.saatAraligi}_test" 
        />

        <p:tooltip for="#{rs.saatAraligi}_test" value="test text"/>
    </ui:repeat>

</h:form>
</html>
rezervasyonBean.rezervasyonSaatleriListesi为列表，rs.saatAraligi的元素为a、b、c

我的问题是：如何以相同的方式动态标识ui组件和p:tooltip的“for”属性

关于。

JSF UI组件的ID属性在视图构建期间进行评估，但是
在视图渲染期间运行，因此
{rs.saatAraligi}
将评估为
null
，因此命令按钮的ID将始终为
\u test

只需从
id
和
中删除
{rs.saatAraligi}
表达式即可。你在这里不需要它。JSF将自动为
的迭代索引添加前缀，从而确保ID的唯一性


<p:commandButton action="#" value="#{rs.saatAraligi}"
    update="@form" 
    id="test" 
/>
<p:tooltip for="test" value="test text"/>






另见：

    

  • -同样的情况也适用于JSF UI组件的
    id
    属性
    •