这是我的问题。
我在表单中得到了一个 selectManyChoice（这不是视图标准的一部分）。一切正常，除非用户选择 1 个或多个条目，否则他们不能全部取消选择，否则我会收到 PPR 异常。
我的设置是一个基于查询的简单 LOV，它在我的 AM 数据模型中可用，我只是将 LOV 从我的数据控件拖到我的表单到一个 selectManyChoice。selectManyChoice 在 autoSubmit 中，因为我还有一个需要提示的 onValueChangeListener。
没有我的 onValueChangeListener 我仍然会以同样的方式得到错误（选择一些东西然后取消选择所有东西）
将选择留空不会产生任何错误并让表单正常使用，但是选择某些内容然后取消选择它会导致错误...
出于参考目的，我使用 jDeveloper 版本 11.1.1.9.0
提前致谢 ！
这是启动的 PPR 错误，以防万一
java.lang.NullPointerException
at oracle.adfinternal.view.faces.model.binding.FacesCtrlListBinding.findObjectFromIndex( FacesCtrlListBinding.java:292)
at oracle.adfinternal.view.faces.model.binding.FacesCtrlListBinding.getInputValue( FacesCtrlListBinding.java:215)
at oracle.jbo.uicli.binding.JUCtrlValueBinding.internalGet(JUCtrlValueBinding.java:2374)
at oracle.jbo.uicli.binding.JUCtrlListBinding.internalGet(JUCtrlListBinding.java:3807)
at oracle.adfinternal.view.faces.model.binding.FacesCtrlListBinding.internalGet( FacesCtrlListBinding.java:524)
at oracle.adf.model.binding.DCControlBinding.get(DCControlBinding.java:768)
at javax.el.MapELResolver.getValue(MapELResolver.java:196)
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:173)
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:200)
at com.sun.el.parser.AstValue.getValue(AstValue.java:138)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:206)
at org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(FacesBeanImpl.java:68)
at org.apache.myfaces.trinidad.component.UIXComponentBase.getProperty(UIXComponentBase.java:1429)
at org.apache.myfaces.trinidad.component.UIXValue.getValue(UIXValue.java:79)
at org.apache.myfaces.trinidad.component.UIXEditableValue.validate(UIXEditableValue.java:187)
at org.apache.myfaces.trinidad.component.UIXEditableValue._executeValidate(UIXEditableValue.java:616)
at org.apache.myfaces.trinidad.component.UIXEditableValue.processValidators(UIXEditableValue.java:304)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl$ProcessValidationsCallback.invokeContextCallback (LifecycleImpl.java:1675)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1661)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent.invokeOnComponent( ContextSwitchingComponent.java:223)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnComponent(UIXComponentBase.java:1682)
at org.apache.myfaces.trinidad.component.UIXComponentBase.invokeOnChildrenComponents( UIXComponentBase.java:1565)
at oracle.adf.view.rich.component.fragment.UIXInclude.invokeOnComponent(UIXInclude.java:157)