Listview 筛选的ViewList上的OutBounds异常
我正在开发一个小应用程序,它从数据库获取信息并在ListView中显示,然后我选择列表中的元素并将其移动到第二个列表,我必须能够在列表之间添加和删除元素。我还使用FilteredList实现了这两个列表的搜索功能。我的代码可以工作,我可以在列表之间切换元素,但是当我尝试将元素从第二个列表返回到第一个列表,或者当我将第一个列表的最后一个元素移动到第二个列表时,会出现边界外异常。 有人能帮我弄清楚吗 提前谢谢 例外情况Listview 筛选的ViewList上的OutBounds异常,listview,javafx,observablelist,jfoenix,Listview,Javafx,Observablelist,Jfoenix,我正在开发一个小应用程序,它从数据库获取信息并在ListView中显示,然后我选择列表中的元素并将其移动到第二个列表,我必须能够在列表之间添加和删除元素。我还使用FilteredList实现了这两个列表的搜索功能。我的代码可以工作,我可以在列表之间切换元素,但是当我尝试将元素从第二个列表返回到第一个列表,或者当我将第一个列表的最后一个元素移动到第二个列表时,会出现边界外异常。 有人能帮我弄清楚吗 提前谢谢 例外情况 Exception in thread "JavaFX Application
Exception in thread "JavaFX Application Thread" java.lang.IndexOutOfBoundsException: Index: 3, Size: 3
at java.util.ArrayList.rangeCheck(ArrayList.java:657)
at java.util.ArrayList.get(ArrayList.java:433)
at com.sun.javafx.collections.ObservableListWrapper.get(ObservableListWrapper.java:89)
at javafx.collections.transformation.FilteredList.get(FilteredList.java:172)
at javafx.scene.control.ListCell.updateItem(ListCell.java:459)
at javafx.scene.control.ListCell.lambda$new$160(ListCell.java:167)
at javafx.collections.WeakListChangeListener.onChanged(WeakListChangeListener.java:88)
at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
at javafx.collections.transformation.FilteredList.sourceChanged(FilteredList.java:147)
at javafx.collections.transformation.TransformationList.lambda$getListener$23(TransformationList.java:106)
at javafx.collections.WeakListChangeListener.onChanged(WeakListChangeListener.java:88)
at com.sun.javafx.collections.ListListenerHelper$Generic.fireValueChangedEvent(ListListenerHelper.java:329)
at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(ListListenerHelper.java:73)
at javafx.collections.ObservableListBase.fireChange(ObservableListBase.java:233)
at javafx.collections.ListChangeBuilder.commit(ListChangeBuilder.java:482)
at javafx.collections.ListChangeBuilder.endChange(ListChangeBuilder.java:541)
at javafx.collections.ObservableListBase.endChange(ObservableListBase.java:205)
at com.sun.javafx.collections.ObservableListWrapper.removeAll(ObservableListWrapper.java:185)
at com.kalypso.WCExporter.MainController.removeItemFromList(MainController.java:351)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1771)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
清单声明
@FXML
private JFXListView leftList;
@FXML
private JFXTextField leftFilter;
@FXML
private JFXListView rightList;
@FXML
private JFXTextField rightFilter;
private ObservableList<String> leftData = FXCollections.observableArrayList();
private ObservableList<String> rightData = FXCollections.observableArrayList();
private FilteredList<String> leftFilteredData;
private FilteredList<String> rightFilteredData;
@FXML
私有JFXListView leftList;
@FXML
私有JFXTextFieldLeftFilter;
@FXML
私有JFXListView rightList;
@FXML
私有JFXTextFieldRightFilter;
私有ObservableList leftData=FXCollections.observableArrayList();
私有ObservableList rightData=FXCollections.observableArrayList();
private FilteredList leftFilteredData;
private FilteredList rightFilteredData;
此方法填充第一个列表
此列表包含将要使用的所有值
private void loadResultList(){
if( session != null && session.isOpen()) {
//Clear list View
leftList.getItems().clear();
//Get entity node
HibernateUtil hibernateUtil = new HibernateUtil();
//Get query results
List resultSet = hibernateUtil.executeSQLQuery(session, selectedEntity.getValue().get("query").asText());
//Wrap resultset into Observable list
resultSet.forEach(result -> leftData.add(((Map)result).get("NAME").toString()));
// 1. Wrap the ObservableList in a FilteredList (initially display all data).
leftFilteredData = new FilteredList<>(leftData, p -> true);
// 2. Set the filter Predicate whenever the filter changes.
wrapListAndAddFiltering(leftFilter, leftFilteredData);
leftList.setItems(leftFilteredData);
leftList.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
} else{
Alert noDBCon = new Alert(Alert.AlertType.ERROR);
noDBCon.setTitle("No Database connection");
noDBCon.setHeaderText("No Database Connection");
noDBCon.setContentText("Select and connect to a DB before doing any transaction.");
noDBCon.showAndWait();
}
}
private void wrapListAndAddFiltering(JFXTextField filterField,FilteredList<String> filteredData) {
filterField.textProperty().addListener((observable, oldValue, newValue) -> {
filteredData.setPredicate(item -> {
String filter = filterField.getText().toLowerCase();
if (newValue == null || newValue.isEmpty()) {
return true;
}
if (item.toLowerCase().contains(filter)) {
return true;
}
return false;
});
});
}
private void加载结果列表(){
if(session!=null&&session.isOpen()){
//清除列表视图
leftList.getItems().clear();
//获取实体节点
HibernateUtil HibernateUtil=新的HibernateUtil();
//获取查询结果
List resultSet=hibernateUtil.executeSQLQuery(会话,selectedEntity.getValue().get(“查询”).asText());
//将结果集包装到可观察列表中
resultSet.forEach(result->leftData.add((Map)result.get(“NAME”).toString());
//1.将ObservableList包装在FilteredList中(最初显示所有数据)。
leftFilteredData=新的FilteredList(leftData,p->true);
//2.每当过滤器更改时,设置过滤器谓词。
WraplistandFiltering(leftFilter,LeftFilteredata);
setItems(leftFilteredData);
leftList.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
}否则{
Alert noDBCon=新警报(Alert.AlertType.ERROR);
setTitle(“无数据库连接”);
setHeaderText(“无数据库连接”);
setContentText(“在执行任何事务之前选择并连接到数据库”);
noDBCon.showAndWait();
}
}
私有void wrapListAndAddFiltering(JFXTextField filterField,FilteredList filteredData){
filterField.textProperty().addListener((可观察、旧值、新值)->{
filteredData.setPredicate(项->{
字符串筛选器=filterField.getText().toLowerCase();
if(newValue==null | | newValue.isEmpty()){
返回true;
}
if(item.toLowerCase().contains(filter)){
返回true;
}
返回false;
});
});
}
添加和删除元素的方法
@FXML
private void addItemToList(){
//1.- Add elements to right list
//Wrap left elements into Observable list
leftList.getSelectionModel().getSelectedItems().forEach(item -> rightData.add(item.toString()));
//Wrap the ObservableList in a FilteredList (initially display all data).
rightFilteredData = new FilteredList<>(rightData, p -> true);
wrapListAndAddFiltering(rightFilter, rightFilteredData);
rightList.setItems(rightFilteredData);
//2.- Remove elements from left list
leftData.removeAll(leftList.getSelectionModel().getSelectedItems());
leftFilteredData = new FilteredList<>(leftData, p -> true);
wrapListAndAddFiltering( leftFilter, leftFilteredData );
leftList.setItems(leftFilteredData);
}
@FXML
private void removeItemFromList(){
//1.-add elements to left list
rightList.getSelectionModel().getSelectedItems().forEach(item -> leftData.add(item.toString()));
leftFilteredData = new FilteredList<>(leftData, p -> true);
wrapListAndAddFiltering(leftFilter, leftFilteredData);
leftList.setItems(leftFilteredData);
//1.-Remove items from right list
ObservableList<String> temp = FXCollections.observableArrayList();
rightList.getSelectionModel().getSelectedItems().forEach(el -> temp.add(el.toString()));
//rightList.getSelectionModel().getSelectedItems().forEach(rightData::remove);
rightData.removeAll(temp);
//rightData.removeAll();
rightFilteredData = new FilteredList<>(rightData, p -> true);
wrapListAndAddFiltering( rightFilter, rightFilteredData );
rightList.setItems(rightFilteredData);
}
@FXML
私有void addItemToList(){
//1.-将元素添加到右侧列表中
//将左侧元素包装到可观察列表中
leftList.getSelectionModel().getSelectedItems().forEach(item->rightData.add(item.toString());
//将ObservableList包装在FilteredList中(最初显示所有数据)。
rightFilteredData=new FilteredList(rightData,p->true);
WraplistandFiltering(rightFilter,RightFilteredata);
rightList.setItems(rightFilteredData);
//2.-从左侧列表中删除元素
leftData.removeAll(leftList.getSelectionModel().getSelectedItems());
leftFilteredData=新的FilteredList(leftData,p->true);
WraplistandFiltering(leftFilter,LeftFilteredata);
setItems(leftFilteredData);
}
@FXML
私有void removietemfromlist(){
//1.-将元素添加到左侧列表
rightList.getSelectionModel().getSelectedItems().forEach(item->leftData.add(item.toString());
leftFilteredData=新的FilteredList(leftData,p->true);
WraplistandFiltering(leftFilter,LeftFilteredata);
setItems(leftFilteredData);
//1.-从右侧列表中删除项目
ObservableList temp=FXCollections.observableArrayList();
rightList.getSelectionModel().getSelectedItems().forEach(el->temp.add(el.toString());
//rightList.getSelectionModel().getSelectedItems().forEach(rightData::remove);
rightData.removeAll(临时);
//rightData.removeAll();
rightFilteredData=new FilteredList(rightData,p->true);
WraplistandFiltering(rightFilter,RightFilteredata);
rightList.setItems(rightFilteredData);
}
图形用户界面
我创建了一个。代码中的注释。它显示了如何设置FilteredList
,以及如何将数据从一个列表视图移动到另一个
主要
控制器
import java.net.URL;
导入java.util.ArrayList;
导入java.util.List;
导入java.util.ResourceBundle;
导入javafx.collections.FXCollections;
导入javafx.collections.ObservableList;
导入javafx.collections.transformation.FilteredList;
导入javafx.event.ActionEvent;
导入javafx.fxml.fxml;
导入javafx.fxml.Initializable;
导入javafx.scene.control.ListView;
导入javafx.scene.control.SelectionMode;
导入javafx.scene.control.TextField;
/**
*
*@author blj0011
*/
公共类FXMLDocumentController实现可初始化
{
@FXML
私有ListView左、右;
@FXML
私有文本字段tfLeft,tfRight;
ObservableList leftData=FXCollections.observableArrayList();
ObservableList rightData=FXCollections.observableArrayList();
FilteredList filteredLeftData,filteredRightData;
@凌驾
公共void初始化(URL、ResourceBundle rb)
{
leftData.addAll(getFakeDataFromDB());//从DB获取数据
//addAll(getFakeDataFromDB())/
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
/**
*
* @author blj0011
*/
public class JavaFXApplication239 extends Application
{
@Override
public void start(Stage stage) throws Exception
{
Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
launch(args);
}
}
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.ResourceBundle;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.collections.transformation.FilteredList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.ListView;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TextField;
/**
*
* @author blj0011
*/
public class FXMLDocumentController implements Initializable
{
@FXML
private ListView lvLeft, lvRight;
@FXML
private TextField tfLeft, tfRight;
ObservableList<String> leftData = FXCollections.observableArrayList();
ObservableList<String> rightData = FXCollections.observableArrayList();
FilteredList<String> filteredLeftData, filteredRightData;
@Override
public void initialize(URL url, ResourceBundle rb)
{
leftData.addAll(getFakeDataFromDB());//get data from DB
//rightData.addAll(getFakeDataFromDB());//Used for testing
filteredLeftData = new FilteredList(leftData, s -> true);
filteredRightData = new FilteredList(rightData, s -> true);
//Set filtered Lists
tfLeft.textProperty().addListener((observable, oldValue, newValue) -> {
if (newValue == null || newValue.length() == 0) {
filteredLeftData.setPredicate(null);
}
else {
filteredLeftData.setPredicate(t -> {
return t.toUpperCase().startsWith(newValue.toUpperCase());
});
}
});
tfRight.textProperty().addListener((observable, oldValue, newValue) -> {
if (newValue == null || newValue.length() == 0) {
filteredRightData.setPredicate(null);
}
else {
filteredRightData.setPredicate(t -> {
return t.toUpperCase().startsWith(newValue.toUpperCase());
});
}
});
//Set listview items
lvLeft.setItems(filteredLeftData);
lvRight.setItems(filteredRightData);
//Set selecton model selection mode
lvLeft.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
lvRight.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
}
@FXML
private void handleBtnActionMoveToLeft(ActionEvent actionEvent)
{
List<String> itemsToMove = new ArrayList(lvRight.getSelectionModel().getSelectedItems());//If you don't do this "new ArrayList(..):", then you need to first addAll then removeAll
System.out.println("list size: " + itemsToMove.size());
rightData.removeAll(itemsToMove);
leftData.addAll(itemsToMove);
}
@FXML
private void handleBtnActionMoveToRight(ActionEvent actionEvent)
{
List<String> itemsToMove = new ArrayList(lvLeft.getSelectionModel().getSelectedItems());//If you don't do this "new ArrayList(..):", then you need to first addAll then removeAll
System.out.println("list size: " + itemsToMove.size());
leftData.removeAll(itemsToMove);
rightData.addAll(itemsToMove);
}
List<String> getFakeDataFromDB()
{
List<String> tempList = new ArrayList();
tempList.add("Hello");
tempList.add("Hello World!");
tempList.add("Bye");
tempList.add("Bye World!");
tempList.add("Been");
tempList.add("Bad");
return tempList;
}
}
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.ListView?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>
<HBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.141" xmlns:fx="http://javafx.com/fxml/1" fx:controller="javafxapplication239.FXMLDocumentController">
<children>
<ListView fx:id="lvLeft" prefHeight="200.0" prefWidth="200.0" />
<VBox alignment="CENTER" prefHeight="200.0" prefWidth="100.0" HBox.hgrow="ALWAYS">
<children>
<Label text="Left" />
<TextField fx:id="tfLeft" />
<VBox alignment="CENTER" prefHeight="200.0" prefWidth="100.0" spacing="5.0">
<children>
<Button mnemonicParsing="false" onAction="#handleBtnActionMoveToRight" text="Move To Right" />
<Button mnemonicParsing="false" onAction="#handleBtnActionMoveToLeft" text="Move To Left" />
</children>
<opaqueInsets>
<Insets />
</opaqueInsets>
</VBox>
<Label text="Right" />
<TextField fx:id="tfRight" />
</children>
</VBox>
<ListView fx:id="lvRight" prefHeight="200.0" prefWidth="200.0" />
</children>
</HBox>