Question

这是Facelet：

<!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">

 <h:head>
 <title>Title</title>
 </h:head>

 <h:body>
 <h:form>
 <h:commandButton value ="Converter" action ="#{conversorMonetarioBean.converte}"/>
 <h:inputText value ="#{conversorMonetarioBean.valor}"/>

 <h:outputLabel value ="de" for ="de"/>

 <h:selectOneMenu value ="#{conversorMonetarioBean.de}" id="de">
 <f:selectItems 
    value ="#{conversorMonetarioBean.taxas.keySet()}"
    var ="moeda"
    itemValue ="#{moeda}"
    itemLabel ="#{moeda}" />
 </h:selectOneMenu>

 <h:outputLabel value ="para" for ="para"/>

 <h:selectOneMenu value ="#{conversorMonetarioBean.para}" id="para">
 <f:selectItems
     value ="#{conversorMonetarioBean.taxas.keySet()}"
     var ="moeda"
     itemValue ="#{moeda}"
     itemLabel ="#{moeda}"  /> 
 </h:selectOneMenu>
 </h:form>



<h:outputFormat value ="{0} em {1} equivale a {2} em {3}" rendered ="#{conversorMonetarioBean.resultado != null}">
 <f:param value ="#{conversorMonetarioBean.valor}"/>
 <f:param value ="#{conversorMonetarioBean.de}"/>
 <f:param value ="#{conversorMonetarioBean.resultado}"/>
 <f:param value ="#{conversorMonetarioBean.para}"/>
 </h:outputFormat>
</h:body>
</html>

它说f：selectItems是一个未知标签。

可能有什么不对？我正在使用JSF2，GlassFish 3.1.2，Eclipse。我尝试了ctrl + space，只有h：something标签。

Answer 1

您忘记在f声明html中导入xmlns:f="http://java.sun.com/jsf/core"名称空间，以便顶部显示如下：

<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core">

此外，您的IDE可能会向您显示缺少f命名空间的提示，因此按照其说明执行导入将解决您的问题。

未知标签.xhtml jsf <f：selectitems =“”> </f：>

1 个答案: