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primefaces - p :commandButton action has not being called in dynamic pages

转载 作者：行者123 更新时间：2023-12-02 01:59:22 25 4
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我有一个应用程序，其布局具有左侧和中心布局单元 (demoLayout.xhtml)。在主页 (main.xhtml) 上，我在左侧布局单元 (demoTree.xhtml) 上有 p:tree，在中心布局单元上有三种不同的形式 (first.xhtml、second.xhtml、third.xhtml)。中心表格开关使用树节点点击。我的默认中心表单是 first.xhtml，当我没有将 p:commandButton 放在 first.xhtml 上时，second.xhtml 和 third.xhtml 上的命令按钮没有被调用。当我将 p:commandButton 放在 first.xhtml 上时，其他命令按钮可以工作，但我不想将 p:commandButton 放在 first.xhtml 上。我该怎么办？

demoLayout.xhtml

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

    <f:view id="mainPanel" encoding="UTF-8" contentType="text/html">

        <h:head>
            <f:facet name="first">
                <meta http-equiv="X-UA-Compatible" content="EmulateIE8" />
                <meta content='text/html; charset=UTF-8' http-equiv="Content-Type" />
                <title>#{title}</title>
            </f:facet>

        </h:head>

        <h:body>

            <p:layout fullPage="true">

                <p:layoutUnit id="left" position="west" size="300" resizable="true" closable="true" collapsible="true" header="Quick Links" visible="true" minSize="200">
                    <div id="west">
                        <ui:insert name="west">
                            Default West Content
                        </ui:insert>
                    </div>
                </p:layoutUnit>

                <p:layoutUnit id="center" position="center">
                    <div id="centerDiv">
                        <ui:insert name="center">
                            Default Center Content
                        </ui:insert>
                    </div>
                </p:layoutUnit>

            </p:layout>

        </h:body>
    </f:view>

    </html>

ma​​in.xhtml

<ui:composition template="demoLayout.xhtml"
    xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
        xmlns:p="http://primefaces.org/ui">

        <ui:param name="title" value="demo" />

    <ui:define name="west">
        <ui:include src="demoTree.xhtml" />
    </ui:define>

    <ui:define name="center">
        <ui:include src="#{demo3MBean.activePanel}" />
    </ui:define>

</ui:composition>

demoTree.xhtml

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

    <h:form id="treeForm">

    <p:growl id="messages" showDetail="true" sticky="false" />

        <p:tree value="#{demoTreeBean.root}" var="node" id="tree" animate="true"    style="width:350px;height:720px" dynamic="true" cache="false"
        selectionMode="single">

            <p:treeNode type="First">
                <h:outputText value="#{node}" id="lblNode1" />
            </p:treeNode>
            <p:treeNode type="Second">
                <h:outputText value="#{node}" id="lblNode2" />
            </p:treeNode>
            <p:treeNode type="Third">
               <h:outputText value="#{node}" id="lblNode3" />
            </p:treeNode>
            <p:ajax event="select" update=":rightForm" listener="#{demo3MBean.onNodeSelect}" />
        </p:tree>

        <p:blockUI block=":center" trigger="tree">  
        LOADING<br />
            <p:graphicImage value="/images/ajax-loader.gif" />
        </p:blockUI>

    </h:form>

 </ui:composition>

first.xhtml

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

    <h:form id="rightForm">

    <p:growl id="messages" showDetail="true" sticky="false" />

        <br></br>

        <p:fieldset id="resourceList" legend="1 nolu grup">

            <h:outputText value="1 Nolu XHTML" />
        <br />
            <ui:remove> 
            <p:commandButton id="buton" value="Print Me 1" actionListener="#{demo3MBean.printMe1}" />
            </ui:remove>
        </p:fieldset>

    </h:form>

</ui:composition>

second.xhtml

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

    <h:form id="rightForm">

        <p:growl id="messages" showDetail="true" sticky="false" />

        <br></br>

        <p:fieldset id="resourceList" legend="2 nolu grup">

            <h:outputText value="2 Nolu XHTML" />
            <br />
            <p:commandButton id="buton" value="Print Me 2" actionListener="#{demo3MBean.printMe2}" />

        </p:fieldset>

    </h:form>

</ui:composition>

third.xhtml

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

    <h:form id="rightForm">

        <p:growl id="messages" showDetail="true" sticky="false" />

        <br></br>

        <p:fieldset id="resourceList" legend="3 nolu grup">

            <h:outputText value="3 Nolu XHTML" />
            <br />
            <p:commandButton id="buton" value="Print Me 3" actionListener="#{demo3MBean.printMe3}" />

        </p:fieldset>

    </h:form>

</ui:composition>

Demo3MBean.java

@ManagedBean(name = "demo3MBean")
@ViewScoped
public class Demo3MBean extends TlosSWBaseBean implements Serializable {

    private static final long serialVersionUID = -504537811128309503L;

    private String activePanel = FIRST_PANEL;

    public final static String FIRST_PANEL = "first.xhtml";
    public final static String SECOND_PANEL = "second.xhtml";
    public final static String THIRD_PANEL = "third.xhtml";

    public void onNodeSelect(NodeSelectEvent event) {

        String nodeType = event.getTreeNode().getType();
        if (nodeType.equals("First")) {

            activePanel = FIRST_PANEL;

        } else if (nodeType.equals("Second")) {

            activePanel = SECOND_PANEL;

        } else if (nodeType.equals("Third")) {

            activePanel = THIRD_PANEL;
        }

    }

    public void printMe1(ActionEvent e) {
        System.out.println("Me 1");
    }

    public void printMe2(ActionEvent e) {
        System.out.println("Me 2");
    }

    public void printMe3(ActionEvent e) {
        System.out.println("Me 3");
    }

    public String getActivePanel() {
        return activePanel;
    }

    public void setActivePanel(String activePanel) {
        this.activePanel = activePanel;
    }

}

DemoTreeBean.java

@ManagedBean(name = "demoTreeBean")
public class DemoTreeBean {

    private TreeNode root;

    @SuppressWarnings("unused")
    public DemoTreeBean() {
        root = new DefaultTreeNode("Root", null);
        TreeNode node0 = new DefaultTreeNode("First", "First Node", root);
        TreeNode node1 = new DefaultTreeNode("Second", "Second Node", root);
        TreeNode node2 = new DefaultTreeNode("Third", "Third Node", root);

    }

    public TreeNode getRoot() {
        return root;
    }
}

我也读过这些:

最佳答案

main.xhtml 中的这部分是导致问题的原因。

<ui:define name="center">
    <ui:include src="#{demo3MBean.activePanel}" />
</ui:define>

在运行时更改 src 的值不起作用。

尝试使用像

这样的静态值 
<ui:define name="center">
    <ui:include src="third.xhtml" />
</ui:define>

你会看到按钮起作用了。

关于primefaces - p :commandButton action has not being called in dynamic pages，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18020459/

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