column当我在中时，我似乎无法触发事件dataTable。这是我的简单演示
<h:form id="form">
<!--This section of p:tree here seems to be the reason causing the event not fired when click the command button-->
<p:tree value="#{viewBean.root}" var="node" dynamic="true" cache="false"
selectionMode="checkbox" selection="#{treeBean.selectedNode}">
<p:ajax event="expand" update=":form:messages" listener="#{viewBean.onNodeExpand}" />
<p:ajax event="collapse" update=":form:messages" listener="#{viewBean.onNodeCollapse}" />
<p:ajax event="select" update=":form:messages" listener="#{viewBean.onNodeSelect}" />
<p:ajax event="unselect" update=":form:messages" listener="#{viewBean.onNodeUnselect}" />
<p:treeNode>
<h:outputText value="#{node}" />
</p:treeNode>
</p:tree>
<h:panelGroup id="mygroup">
<p:dataTable id="mytable" value="#{viewBean.foodList}" var="item">
<p:column>
#{item}
</p:column>
<p:column>
<p:commandButton value="delete"
action="#{viewBean.delete}"
update=":form:mygroup">
<f:setPropertyActionListener target="#{viewBean.selectedFood}"
value="#{item}"/>
</p:commandButton>
</p:column>
</p:dataTable>
</h:panelGroup>
</h:form>
这是我的托管豆
@ManagedBean
@ViewScoped
public class ViewBean {
private TreeNode root;
private TreeNode selectedNode;
private List<String> foodList;
private String selectedFood;
@PostConstruct
public void init(){
foodList = new ArrayList<String>();
foodList.add("Pizza");
foodList.add("Pasta");
foodList.add("Hamburger");
root = new DefaultTreeNode("Root", null);
TreeNode node0 = new DefaultTreeNode("Node 0", root);
TreeNode node1 = new DefaultTreeNode("Node 1", root);
TreeNode node2 = new DefaultTreeNode("Node 2", root);
TreeNode node00 = new DefaultTreeNode("Node 0.0", node0);
TreeNode node01 = new DefaultTreeNode("Node 0.1", node0);
TreeNode node10 = new DefaultTreeNode("Node 1.0", node1);
TreeNode node11 = new DefaultTreeNode("Node 1.1", node1);
TreeNode node000 = new DefaultTreeNode("Node 0.0.0", node00);
TreeNode node001 = new DefaultTreeNode("Node 0.0.1", node00);
TreeNode node010 = new DefaultTreeNode("Node 0.1.0", node01);
TreeNode node100 = new DefaultTreeNode("Node 1.0.0", node10);
}
public void delete(){
foodList.remove(selectedFood);
}
//setter and getter
public void onNodeExpand(NodeExpandEvent event) {
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Expanded", event.getTreeNode().toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
public void onNodeCollapse(NodeCollapseEvent event) {
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Collapsed", event.getTreeNode().toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
public void onNodeSelect(NodeSelectEvent event) {
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Selected", event.getTreeNode().toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
public void onNodeUnselect(NodeUnselectEvent event) {
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Unselected", event.getTreeNode().toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
}
我的问题似乎是事件没有被触发，这意味着delete永远不会被调用。
我环顾四周，知道 Mojarra 在嵌套 UIData 组件方面有很多问题，所以我尝试了 Mojarra 2.1.4，仍然没有解决问题。我试过Myfaces 2.1.5，还是不行！！！这是 Primefaces 的错误吗？我什h:panelGroup至用作包装器，update但它仍然不起作用。
编辑：事实证明，p:tree上面的dataTable是单击 时未触发事件的根本原因commandButton。如果我删除p:tree它，它会立即工作。请注意p:tree，当我单击结帐时，它本身工作得很好，在我的托管 bean 上触发了事件。