Question

我在数据表中有四列，我需要使用两个命令链接进行两个单独的操作，我需要一个包含两个菜单项的上下文菜单。上下文菜单显示和操作侦听器仅触发仅具有输出文本的列，而对于具有此错误的命令链接的列则失败

Received 'java.lang.NullPointerException' when invoking action listener '#{displayIssuesBean.moveIssue()}' for component 'moveIssueFromNextSprintToCurrentSprint'
17:29:51,524 SEVERE [javax.faces.event] (http--127.0.0.1-8080-6) java.lang.NullPointerException

我甚至尝试使用命令按钮，但问题仍在继续请提前帮助我

有没有办法让上下文菜单只能使用一个列，并且选择需要上下文菜单的整个行和动作侦听器工作？

<p:contextMenu for="currentSprint">
    <p:menuitem id="moveIssueFromCurrentSprintToNextSprint"
        value="#{msg['prometheus_movetonextsprint']}"
        icon="ui-icon-circle-arrow-s"
        update="currentBacklog,currentSprint,nextSprint"
        actionListener="#{displayIssuesBean.moveIssue}">
        <f:param name="fromIssue" value="3" />
        <f:param name="toIssue" value="2" />
    </p:menuitem>
</p:contextMenu>

<p:dataTable id="currentSprint" var="currentSprintList"
    value="#{displayIssuesBean.currentSprintList}" scrollable="true"
    style="width:1000px;"
    emptyMessage="#{msg['prometheus_issuesdisplayemptymessage']}"
    draggableRows="true" rowKey="#{currentSprintList.title}"
    sortBy="#{currentSprintList.priorityOrder}"
    selection="#{displayIssuesBean.currentSprintSelectedIssue}"
    selectionMode="single" ajax="false">

    <p:ajax event="rowReorder"
        listener="#{displayIssuesBean.onRowReorderCurrentSprint}"
        update="currentSprint" />

    <f:facet name="header">#{msg['prometheus_issues']}</f:facet>

    <p:column headerText="#{msg['prometheus_priority']}">
        <h:outputText value="#{currentSprintList.priorityOrder}" />
    </p:column>

    <p:column headerText="#{msg['prometheus_number']}">
        <p:commandLink action="#{menuBarBean.navigateToModifyIssue}"
            value="#{currentSprintList.issueNumber}" ajax="false">
            <f:setPropertyActionListener target="#{modifyIssueBean.issueId}"
                value="#{currentSprintList.issueNumber}" />
        </p:commandLink>
    </p:column>

    <p:column headerText="#{msg['prometheus_title']}">
        <h:commandLink action="#{menuBarBean.navigateToViewIssue}"
            value="#{currentSprintList.title}" target="_blank">
            <f:setPropertyActionListener target="#{viewIssueBean.issueId}"
                value="#{currentSprintList.issueNumber}" />
            <f:setPropertyActionListener target="#{viewIssueBean.locale}"
                value="#{loginBean.locale}" />
        </h:commandLink>
    </p:column>

    <p:column headerText="#{msg['prometheus_type']}">
        <h:outputText value="#{currentSprintList.issueType}" />
    </p:column>

</p:dataTable>

数据表上下文菜单无法用于列中的命令链接？

0 个答案: