Woj*_*hKo 4 jsf primefaces composite-component
我正在制作复合组件,我有commandButton.但它不起作用.
用法:
<wk:commandButton value="Non-Ajax actionListener" actionListener="#{ioBean.saveListener}" />
组件代码:commandButton.xhtml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:cc="http://java.sun.com/jsf/composite">
<cc:interface>
<cc:attribute name="value" />
<cc:attribute name="action" method-signature="void action(javax.faces.event.ActionEvent)" default="null"/>
<cc:attribute name="actionListener" method-signature="void actionListener(javax.faces.event.ActionEvent)" default="null"/>
<cc:attribute name="styleClass" default="button" />
</cc:interface>
<cc:implementation>
<p:commandButton
value="#{cc.attrs.value}"
action="#{cc.attrs.action}"
actionListener="#{cc.attrs.actionListener}"
styleClass="#{styleClass}">
<cc:insertChildren />
</p:commandButton>
</cc:implementation>
</html>
这是日志:
0000006c FaceletViewDe E Inner component action not found when retargetMethodExpressions
0000006c FaceletViewDe E Inner component actionListener not found when retargetMethodExpressions
0000006c srt W com.ibm.ws.webcontainer.srt.SRTServletResponse setIntHeader SRVE8094W: Ostrze?enie: nie mo?na ustawi? nag?ówka. Odpowied? zosta?a ju? zatwierdzona.
我认为问题在于action和actionListener的默认值.但是根据PrimeFaces文档,action和actionListener的默认值为null.一个选项是制作四个不同的变体,其中action和actionListener为null或已定义,但它似乎不是一个好的解决方案.
使用<cc:attribute targets>而不是显式指定可能的null操作(侦听器).
<cc:interface>
<cc:attribute name="value" />
<cc:attribute name="action" targets="buttonId" />
<cc:attribute name="actionListener" targets="buttonId" />
</cc:interface>
<cc:implementation>
<p:commandButton id="buttonId" value="#{cc.attrs.value}" />
</cc:implementation>
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