我目前正在使用Primefaces和treetables。除了一个案例，我的treetable工作得很好。让我举一个例子来解释这个问题：
treetable是这样的：
一开始，树就会崩溃。 treetable的定义如下：
<p:treeTable id="treetable" value="#{bean.root}" var="node" selectionMode="single" selection="#{bean.selectedNode}">
我在其中有那些ajax调用：
<p:ajax event="select" listener="#{bean.onSelect}" />
总的来说一切都运转良好。无论节点的级别如何，都会更新所选节点。问题出在这种情况：
（全部已折叠）
在这里我得到了例外：
INFO: java.lang.NumberFormatException: For input string: "0,1"
java.lang.NumberFormatException: For input string: "0,1"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at org.primefaces.component.api.UITree.findTreeNode(UITree.java:120)
at org.primefaces.component.api.UITree.findTreeNode(UITree.java:129)
at org.primefaces.component.api.UITree.setRowKey(UITree.java:80)
at org.primefaces.component.treetable.TreeTableRenderer.decodeSelection(TreeTableRenderer.java:57)
at org.primefaces.component.treetable.TreeTableRenderer.decode(TreeTableRenderer.java:40)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:787)
at org.primefaces.component.api.UITree.processDecodes(UITree.java:180)
at org.primefaces.component.treetable.TreeTable.processDecodes(TreeTable.java:325)
at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:506)
at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
at org.primefaces.component.api.UITree.visitTree(UITree.java:402)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1623)
at javax.faces.component.UIForm.visitTree(UIForm.java:371)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1623)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:1623)
at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:376)
at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:252)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:183)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:931)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
答案 0 :(得分：0)
这是 treetable.js ，there is issue中的PrimeFaces错误。
问题是因为 treetable.js 中的 unselectAllNodes（）函数无法清除选择数组变量，但在退出后它应该为空这个功能：
unselectAllNodes: function() {
var selectedNodes = this.tbody.children('tr.ui-state-highlight');
for(var i = 0; i < selectedNodes.length; i++) {
this.unselectNode(selectedNodes.eq(i), true);
}
}
当展开具有上一个选定行的父行时，不会发生此错误，因为所有可见的选定行（通过 ui-state-highlight 属性搜索）都会从选择中取消选择>数组变量。但是当父行被折叠时，tbody.children *（'tr.ui-state-highlight'）*返回空列表，选择数组变量具有先前值加上用逗号分隔的新可选值。 / p>
来自PrimeFaces 4.0发布此错误的好消息已修复。因为this commit已经被释放了。一个小差异：选择数组变量已被其他提交重命名为选择。
unselectAllNodes: function() {
var selectedNodes = this.tbody.children('tr.ui-state-highlight');
for(var i = 0; i < selectedNodes.length; i++) {
this.unselectNode(selectedNodes.eq(i), true);
}
this.selections = [];
this.writeSelections();
}