“未找到财产”使用 PrimeFaces 远程命令

发布于 2024-11-29 14:42:15 字数 2661 浏览 1 评论 0 原文

我正在尝试使用 PickList http://www.primefaces.org/showcase/ui/remoteCommand.jsf" rel="nofollow">RemoteCommnad ，我收到一个 javax.el.PropertyNotFoundException：定义 updatePermission 属性时，未找到属性“updatePermissions” 异常。

这是我的 UI 定义文件：

<h:form>

              ...           

            <h:selectOneMenu id="groupsList" value="#{permissionsToGroupsBean.selectedGroup}" title="Select Group" onclick="updatePermissions()">
                <f:selectItems value="#{permissionsToGroupsBean.allGroups}" />
            </h:selectOneMenu>

              ....              

            <p:pickList 
                id="permissions" 
                value="#{permissionsToGroupsBean.permissionsPickList}" 
                var="permissionsPickList" 
                itemLabel="#{permissionsPickList}" 
                itemValue="#{permissionsPickList}" />

            ....

        </h:panelGrid>      

        <p:remoteCommand name="updatePermissions" actionListener="#{permissionsToGroupsBean.updatePermissions}" update="permissions"/>

这是应该处理 UI 的控制器：

public class PermissionsToGroupsBean implements Serializable {

    ...

    public void updatePermissions() {
        getPermissionsPickList().setTarget(getPermissionsForSelectedGroup());
    }
}

当我访问页面 URL 时，我得到：

javax.el.PropertyNotFoundException：在类型 tld.company.admin 上找不到属性“updatePermissions”。 web.bean.PermissionsToGroupsBean javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:193) javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:170) javax.el.BeanELResolver.property(BeanELResolver.java:279) javax.el.BeanELResolver.getValue(BeanELResolver.java:60) com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) org.apache.el.parser.AstValue.getValue(AstValue.java:118) org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) com.sun.faces.facelets.el.ELText$ELTextVariable.toString(ELText.java:214) com.sun.faces.facelets.el.ELText$ELTextComposite.toString(ELText.java:155) com.sun.faces.facelets.compiler.CommentInstruction.write(CommentInstruction.java:77) com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82) com.sun.faces.facelets.compiler.UILeaf.encodeAll(UILeaf.java:183) 。

非常感谢任何帮助，谢谢

原文

I'm trying to update a Prime Faces PickList with a RemoteCommnad and I'm getting a javax.el.PropertyNotFoundException: Property 'updatePermissions' not found exception when the updatePermission property is defined.

This is my UI definition file:

<h:form>

              ...           

            <h:selectOneMenu id="groupsList" value="#{permissionsToGroupsBean.selectedGroup}" title="Select Group" onclick="updatePermissions()">
                <f:selectItems value="#{permissionsToGroupsBean.allGroups}" />
            </h:selectOneMenu>

              ....              

            <p:pickList 
                id="permissions" 
                value="#{permissionsToGroupsBean.permissionsPickList}" 
                var="permissionsPickList" 
                itemLabel="#{permissionsPickList}" 
                itemValue="#{permissionsPickList}" />

            ....

        </h:panelGrid>      

        <p:remoteCommand name="updatePermissions" actionListener="#{permissionsToGroupsBean.updatePermissions}" update="permissions"/>

This the controller that is supposed to handle the UI:

public class PermissionsToGroupsBean implements Serializable {

    ...

    public void updatePermissions() {
        getPermissionsPickList().setTarget(getPermissionsForSelectedGroup());
    }
}

When I access the page URL I get:

javax.el.PropertyNotFoundException: Property 'updatePermissions' not found on type tld.company.admin.web.bean.PermissionsToGroupsBean javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:193) javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:170) javax.el.BeanELResolver.property(BeanELResolver.java:279) javax.el.BeanELResolver.getValue(BeanELResolver.java:60) com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) org.apache.el.parser.AstValue.getValue(AstValue.java:118) org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) com.sun.faces.facelets.el.ELText$ELTextVariable.toString(ELText.java:214) com.sun.faces.facelets.el.ELText$ELTextComposite.toString(ELText.java:155) com.sun.faces.facelets.compiler.CommentInstruction.write(CommentInstruction.java:77) com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82) com.sun.faces.facelets.compiler.UILeaf.encodeAll(UILeaf.java:183)

Any help greatly appreciated, thanks.

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不再让梦枯萎 2024-12-06 14:42:15

找到了...问题是 Prime Faces 由于某种原因不处理评论...

我在问题中发布的操作侦听器下定义了一个注释掉的操作侦听器：

<p:remoteCommand name="updatePermissions" actionListener="#{permissionsToGroupsBean.updatePermissions}" update="permissions"/>

        <!-- <p:remoteCommand name="updatePermissions" update="permissions">  
            <f:setPropertyActionListener value="#{selectedPermissions}" target="#{permissionsToGroupsBean.updatePermissions}" />  
        </p:remoteCommand>  -->

一旦我将其删除，它就起作用了。

具有 void 返回类型且无参数的签名有效：

public void updatePermissions() {
    getPermissionsPickList().setTarget(getPermissionsForSelectedGroup());
}

Found it ... the problem was that Prime Faces doesn't handle comments for some reason ...

I had a commented out action listener defined under the one I posted in the question:

<p:remoteCommand name="updatePermissions" actionListener="#{permissionsToGroupsBean.updatePermissions}" update="permissions"/>

        <!-- <p:remoteCommand name="updatePermissions" update="permissions">  
            <f:setPropertyActionListener value="#{selectedPermissions}" target="#{permissionsToGroupsBean.updatePermissions}" />  
        </p:remoteCommand>  -->

As soon as I removed it it worked.

A signature with void return type and no parameters works:

public void updatePermissions() {
    getPermissionsPickList().setTarget(getPermissionsForSelectedGroup());
}

回复收藏 0 原文

日久见人心 2024-12-06 14:42:15

actionListener="#{permissionsToGroupsBean.updatePermissions}" 我不熟悉当前版本的 PrimeFaces，但通常actionListener属性应该返回一个对象，该对象实现ActionListener接口。因此，您的表达式将被解析为不存在的 getUpdatePermissions()`，因此您会收到该消息。

如果您添加了该方法，您应该会看到另一个问题，即返回值不是 ActionListener。

标记是否支持 action 属性？