我是一个纯粹的新手。我做了我的表用迭代从数据库中添加列:setOnEditCommit with Iteration JavaFX
public void captureDataSuper() {
Connection c;
ObservableList<ObservableList> data;
data = FXCollections.observableArrayList();
try {
c = KonekDB.createConnection();
//SQL FOR SELECTING ALL OF CUSTOMER
String SQL = "SELECT * from adminsupervisor";
//ResultSet
ResultSet rs = c.createStatement().executeQuery(SQL);
/**
* ********************************
* TABLE COLUMN ADDED DYNAMICALLY * ********************************
*/
for (int i = 0; i < rs.getMetaData().getColumnCount(); i++) {
//We are using non property style for making dynamic table
final int j = i;
TableColumn col = new TableColumn(rs.getMetaData().getColumnName(i + 1));
//now its editable
col.setCellFactory(TextFieldTableCell.<Adminsupervisor>forTableColumn());
//trying to make effect on database after edited with setOnEditCommit
col.setOnEditCommit(
new EventHandler<CellEditEvent<Adminsupervisor, String>>() {
public void handle(CellEditEvent<Adminsupervisor, String> t) {
((Adminsupervisor) t.getTableView().getItems().get(
t.getTablePosition().getRow())).set(j, t.getNewValue());
}
}
);
col.setCellValueFactory(new Callback<CellDataFeatures<ObservableList, String>, ObservableValue<String>>() {
public ObservableValue<String> call(CellDataFeatures<ObservableList, String> param) {
return new SimpleStringProperty(param.getValue().get(j).toString());
}
});
supervisorTable.getColumns().addAll(col);
System.out.println("Column [" + i + "] ");
}
/**
* ******************************
* Data added to ObservableList * ******************************
*/
while (rs.next()) {
//Iterate Row
ObservableList<String> row = FXCollections.observableArrayList();
for (int i = 1; i <= rs.getMetaData().getColumnCount(); i++) {
//Iterate Column
row.add(rs.getString(i));
}
System.out.println("Row [1] added " + row);
data.add(row);
}
//FINALLY ADDED TO TableView
supervisorTable.setItems(data);
} catch (Exception e) {
e.printStackTrace();
System.out.println("Error on Building Data");
}
}
正如你所看到的,我setOnEditCommit完全无感:
col.setOnEditCommit(
new EventHandler<CellEditEvent<Adminsupervisor, String>>() {
public void handle(CellEditEvent<Adminsupervisor, String> t) {
((Adminsupervisor) t.getTableView().getItems().get(
t.getTablePosition().getRow())).set(j, t.getNewValue());
}
}
);
这是模型类Adminsupervisor:
public class Adminsupervisor {
private String id;
private String username;
private String password;
private String userType;
public String getId() {
return id;
}
public String getUsername() {
return username;
}
public String getPassword() {
return password;
}
public String getUserType() {
return userType;
}
public void setId(String id) {
this.id = id;
}
public void setUsername(String username) {
this.username = username;
}
public void setPassword(String password) {
this.password = password;
}
public void setUserType(String userType) {
this.userType = userType;
}
void set(int j, String newValue) {
for (j = 0; j < 4; j++) {
if (j == 0) {
setId(newValue);
}
if (j == 2) {
setPassword(newValue);
}
if (j == 3) {
setUserType(newValue);
}
if (j == 1) {
setUsername(newValue);
}
}
try {
Connection c = KonekDB.createConnection();
String SQL = "UPDATE adminsupervisor SET "
+ "username=" + username + ","
+ "password=" + password + ","
+ "userType=" + userType + " WHERE id=" + id + "";
//ResultSet
c.createStatement().executeUpdate(SQL);
} catch (Exception e) {
e.printStackTrace();
System.out.println("Error on Building Data");
}
}}
我得到了这个堆栈跟踪:
Exception in thread "JavaFX Application Thread" java.lang.ClassCastException: com.sun.javafx.collections.ObservableListWrapper cannot be cast to AdminSide.Adminsupervisor
at AdminSide.PanelAdmin$1.handle(PanelAdmin.java:275)
at AdminSide.PanelAdmin$1.handle(PanelAdmin.java:272)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.control.TableCell.commitEdit(TableCell.java:349)
at javafx.scene.control.cell.CellUtils.lambda$createTextField$615(CellUtils.java:248)
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.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.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.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 com.sun.javafx.scene.control.behavior.TextFieldBehavior.fire(TextFieldBehavior.java:179)
at com.sun.javafx.scene.control.behavior.TextInputControlBehavior.callAction(TextInputControlBehavior.java:178)
at com.sun.javafx.scene.control.behavior.BehaviorBase.callActionForEvent(BehaviorBase.java:218)
at com.sun.javafx.scene.control.behavior.TextInputControlBehavior.callActionForEvent(TextInputControlBehavior.java:127)
at com.sun.javafx.scene.control.behavior.BehaviorBase.lambda$new$74(BehaviorBase.java:135)
at com.sun.javafx.event.CompositeEventHandler$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.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.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.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$KeyHandler.process(Scene.java:3964)
at javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910)
at javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040)
at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:197)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:147)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$353(GlassViewEventHandler.java:228)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:227)
at com.sun.glass.ui.View.handleKeyEvent(View.java:546)
at com.sun.glass.ui.View.notifyKey(View.java:966)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
所以我的单元格在编辑提交后不会做任何事情。
看一看你的堆栈跟踪,并在第一行说,你尝试“ObservableListWrapper”转换为你的模型类“AdminSide.Adminsupervisor”。你确定,你的DATA对象是一个ObservableList的ObservableList,还是你想拥有一个AdminSide.Adminsupervisor的ObservableList? 'ObservableList'? –
SSchuette
@SSchuette是的我想让Adminsupervisor与ObservableList的类型相同,因此我可以将它包装成没有问题。你愿意告诉我该怎么办? –
“我想让'Adminsupervisor'与'ObservableList'类型相同?这些(非常)不同的类型 - 你不能假装它们是同一件事。您需要确定表格的每一行代表什么类型,并坚持下去。如果你想让它成为'Adminsupervisor',那么把'data'变成'ObservableList'并且添加适当的对象。如果你希望它是'ObservableList'(应该是'ObservableList '),那么完全删除'Adminsupervisor'类并且只使用'ObservableList'。第一个更好,恕我直言,但你需要选择一个。 –