JavaFX .如何在table的底部做一行求和（总行）？
JavaFX .How to make a line of summation(total row) in the bottom of the table?
如何在 table(TreeTableView - JavaFX 或 TableView) 的底部做一行求和？ （对不起我的英语不好）
请写一个例子。
图片（总计）例如
http://i.stack.imgur.com/uRLTZ.gif
在每一栏下面我都放了一个标签来显示SUM.But这对我来说不好
一些FXML
`
<AnchorPane fx:id="anchorPaneWithTable" minHeight="0.0" minWidth="0.0" prefHeight="538.0" prefWidth="1275.0">
<children>
<TreeTableView fx:id="treeTableMainStat" prefHeight="386.0" prefWidth="1303.0" showRoot="false" AnchorPane.bottomAnchor="11.0" AnchorPane.leftAnchor="10.0" AnchorPane.rightAnchor="10.0" AnchorPane.topAnchor="10.0">
<columns>
<TreeTableColumn fx:id="treeProgramNameCol" editable="false" prefWidth="230.0" resizable="false" text="AP Name" />
<TreeTableColumn fx:id="treeLastDateCol" editable="false" prefWidth="90.0" resizable="false" text="Last Date" />
<TreeTableColumn fx:id="treeLoginCol" editable="false" prefWidth="70.0" resizable="false" text="Login" />
<TreeTableColumn fx:id="treeAffiliateIDCol" editable="false" prefWidth="92.0" resizable="false" text="Affiliate ID" />
<TreeTableColumn fx:id="treeRawClicksCol" editable="false" resizable="false" text="Raw" />
<TreeTableColumn fx:id="treeUniqueClicksCol" editable="false" resizable="false" text="Uniq" />
<TreeTableColumn fx:id="treeSignupCounterCol" editable="false" prefWidth="67.0" resizable="false" text="SignupC" />
<TreeTableColumn fx:id="treeSignupMoneyCol" editable="false" minWidth="3.0" prefWidth="77.0" resizable="false" text="SignupM" />
<TreeTableColumn fx:id="treeRebillCounterCol" editable="false" minWidth="0.0" prefWidth="66.0" resizable="false" text="RebillC" />
<TreeTableColumn fx:id="treeRebillMoneyCol" editable="false" prefWidth="78.0" resizable="false" text="RebillM" />
<TreeTableColumn fx:id="treeRefundChargebackCounterCol" editable="false" prefWidth="105.0" resizable="false" text="R/Ch Counter" />
<TreeTableColumn fx:id="treeRefundChargebackMoneyCol" editable="false" prefWidth="104.0" resizable="false" text="R/Ch Money" />
<TreeTableColumn fx:id="treeTotalMoneyCol" editable="false" minWidth="0.0" prefWidth="110.0" resizable="false" text="Total Money" />
</columns>
<contextMenu>
<ContextMenu>
<items>
<MenuItem mnemonicParsing="false" onAction="#handleAddNewAffiliateProgram" text="Add new AP" />
<MenuItem mnemonicParsing="false" text="Unspecified Action" />
<MenuItem mnemonicParsing="false" text="Unspecified Action" />
<MenuItem mnemonicParsing="false" onAction="#handleDeleteAffiliateProgram" text="Delete AP" />
<SeparatorMenuItem mnemonicParsing="false" />
<MenuItem mnemonicParsing="false" onAction="#handleEditAP" text="Properties" />
</items>
</ContextMenu>
</contextMenu>
</TreeTableView>
<ProgressIndicator fx:id="refreshingIndicator" layoutX="478.0" layoutY="124.0" prefHeight="250.0" prefWidth="374.0" progress="-1.0" AnchorPane.leftAnchor="478.0" AnchorPane.topAnchor="124.0" />
</children>
</AnchorPane>
</content>
</Tab>
<Tab closable="false" text="Empty Tab">
<content>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" visible="false" />
</content>
</Tab>
</tabs>
</TabPane>
<HBox prefHeight="35.0">
<children>
<Label fx:id="apNameLab" prefHeight="30.0" prefWidth="229.0" text="Label" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="lastDateLab" prefHeight="30.0" prefWidth="85.0" text="LastDate" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="loginLab" prefHeight="30.0" prefWidth="64.0" text="Login" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="affilIdLab" prefHeight="30.0" prefWidth="86.0" text="AffID" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rawLab" prefHeight="30.0" prefWidth="74.0" text="rawLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="uniqLab" prefHeight="30.0" prefWidth="74.0" text="uniqLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="signCLab" prefHeight="30.0" prefWidth="61.0" text="SignCLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="signMLab" prefHeight="30.0" prefWidth="71.0" text="SignMLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rebillCLab" prefHeight="30.0" prefWidth="61.0" text="RebillCLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rebillMLab" prefHeight="30.0" prefWidth="72.0" text="RebillMLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rChCountLab" prefHeight="30.0" prefWidth="99.0" text="RChCounLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rChMonLab" prefHeight="30.0" prefWidth="98.0" text="RChMonLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="totalLab" prefHeight="30.0" prefWidth="110.0" text="TotalLab" />
</children>
<padding>
<Insets left="10.0" />
</padding>
</HBox>
</children>
</VBox>`
将标签绑定到列
//TreeView_Begin
@FXML
private TreeTableView<APDataFromDB> treeTableMainStat;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeProgramNameCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeLastDateCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeLoginCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeAffiliateIDCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeRawClicksCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeUniqueClicksCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeSignupCounterCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeSignupMoneyCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeRebillCounterCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeRebillMoneyCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeRefundChargebackCounterCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeRefundChargebackMoneyCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeTotalMoneyCol;
//TreeView_End
@FXML
Label apNameLab = new Label();
@FXML
Label lastDateLab = new Label();
@FXML
Label loginLab = new Label();
@FXML
Label affilIdLab = new Label();
@FXML
Label rawLab = new Label();
@FXML
Label uniqLab = new Label();
@FXML
Label signCLab = new Label();
@FXML
Label signMLab = new Label();
@FXML
Label rebillCLab = new Label();
@FXML
Label rebillMLab = new Label();
@FXML
Label rChCountLab = new Label();
@FXML
Label rChMonLab = new Label();
@FXML
Label totalLab = new Label();
@FXML
private void initialize() throws SQLException {
final String pattern = "yyyy-MM-dd";
datePickerStart.setValue(LocalDate.now());
datePickerEnd.setValue(LocalDate.now());
allDownloadsProgressBar.setProgress(0);
refreshingIndicator.setVisible(false);
StringConverter stringConverter = new StringConverter<LocalDate>() {
DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern(pattern);
@Override
public String toString(LocalDate date) {
if (date != null) {
return dateFormatter.format(date);
} else {
return "";
}
}
@Override
public LocalDate fromString(String string) {
if (string != null && !string.isEmpty()) {
return LocalDate.parse(string, dateFormatter);
} else {
return null;
}
}
};
datePickerStart.setConverter(stringConverter);
datePickerStart.setPromptText(pattern.toLowerCase());
datePickerEnd.setConverter(stringConverter);
datePickerEnd.setPromptText(pattern.toLowerCase());
// устанавливаем тип и значение которое должно хранится в колонке
//TreeView_begin
treeProgramNameCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("apName"));
treeLastDateCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("lastDate"));
treeLoginCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("login"));
treeAffiliateIDCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("affiliateID"));
treeRawClicksCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("raw"));
treeUniqueClicksCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("uniq"));
treeSignupCounterCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("signupCounter"));
treeSignupMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("signup"));
treeRebillCounterCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("rebillCounter"));
treeRebillMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("rebillMoney"));
treeRefundChargebackCounterCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("refundChargebackCounter"));
treeRefundChargebackMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("refundChargebackMoney"));
treeTotalMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("totalMoney"));
// заполняем таблицу данными
// Platform.runLater(new Runnable() {
// @Override
// public void run() {
//
// }
// });
new Thread(new Runnable() {
@Override
public void run() {
buildTreeOfStatsFromDB();
//Binding
apNameLab.prefWidthProperty().bind(treeProgramNameCol.widthProperty().multiply(1));
lastDateLab.prefWidthProperty().bind(treeLastDateCol.widthProperty().multiply(1));
loginLab.prefWidthProperty().bind(treeLoginCol.widthProperty().multiply(1));
affilIdLab.prefWidthProperty().bind(treeAffiliateIDCol.widthProperty().multiply(1));
rawLab.prefWidthProperty().bind(treeRawClicksCol.widthProperty().multiply(1));
uniqLab.prefWidthProperty().bind(treeUniqueClicksCol.widthProperty().multiply(1));
signCLab.prefWidthProperty().bind(treeSignupCounterCol.widthProperty().multiply(1));
signMLab.prefWidthProperty().bind(treeSignupMoneyCol.widthProperty().multiply(1));
rebillCLab.prefWidthProperty().bind(treeRebillCounterCol.widthProperty().multiply(1));
rebillMLab.prefWidthProperty().bind(treeRebillMoneyCol.widthProperty().multiply(1));
rChCountLab.prefWidthProperty().bind(treeRefundChargebackCounterCol.widthProperty().multiply(1));
rChMonLab.prefWidthProperty().bind(treeRefundChargebackMoneyCol.widthProperty().multiply(1));
totalLab.prefWidthProperty().bind(treeTotalMoneyCol.widthProperty().multiply(1));
getSumLabel();
}
}).start();
// buildTreeOfStatsFromDB();
// Enable arrow keys for delete AP
treeTableMainStat.addEventFilter(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent keyEvent) {
if (keyEvent.getCode() == KeyCode.Y && keyEvent.isControlDown()) {
handleDeleteAffiliateProgram();
keyEvent.consume();
}
}
});
}
获取所有 SUM
</p>
<pre><code>private void getSumLabel() {
long rawHitsSum = 0;
long uniqHitsSum = 0;
long signCountSum = 0;
double signMoneySum = 0;
long rebillCountSum = 0;
double rebillMoneySum = 0;
long rChCountSum = 0;
double rChMoneySum = 0;
double totalMoneySum = 0;
ObservableList<TreeItem<APDataFromDB>> allData = rootItem.getChildren();
for (TreeItem<APDataFromDB> apDataFromDBTreeItem : allData) {
rawHitsSum += apDataFromDBTreeItem.getValue().getRaw();
uniqHitsSum += apDataFromDBTreeItem.getValue().getUniq();
signCountSum += apDataFromDBTreeItem.getValue().getSignupCounter();
signMoneySum += apDataFromDBTreeItem.getValue().getSignup();
rebillCountSum += apDataFromDBTreeItem.getValue().getRebillCounter();
rebillMoneySum += apDataFromDBTreeItem.getValue().getRebillMoney();
rChCountSum += apDataFromDBTreeItem.getValue().getRefundChargebackCounter();
rChMoneySum += apDataFromDBTreeItem.getValue().getRefundChargebackMoney();
totalMoneySum += apDataFromDBTreeItem.getValue().getTotalMoney();
}
final long finalRawHitsSum = rawHitsSum;
final long finalUniqHitsSum = uniqHitsSum;
final long finalSignCountSum = signCountSum;
final long finalSignCountSum1 = signCountSum;
final long finalRebillCountSum = rebillCountSum;
final double finalRebillMoneySum = rebillMoneySum;
final long finalRChCountSum = rChCountSum;
final double finalRChMoneySum = rChMoneySum;
final double finalTotalMoneySum = totalMoneySum;
Platform.runLater(new Runnable() {
@Override
public void run() {
rawLab.setText(String.valueOf(finalRawHitsSum));
uniqLab.setText(String.valueOf(finalUniqHitsSum));
signCLab.setText(String.valueOf(finalSignCountSum1));
signMLab.setText(String.valueOf(finalSignCountSum));
rebillCLab.setText(String.valueOf(finalRebillCountSum));
rebillMLab.setText(String.valueOf(finalRebillMoneySum));
rChCountLab.setText(String.valueOf(finalRChCountSum));
rChMonLab.setText(String.valueOf(finalRChMoneySum));
totalLab.setText(String.valueOf(finalTotalMoneySum));
}
});
System.out.println(rawHitsSum);
}
编辑：不是问题的答案。我误解了问题。
我没有示例，但我可以向您解释一种方法。
- 使用 "TableView"
每一列应该是 "TableColumn"。这个 "TableColumn" 应该与 "ObsverbableList" 相关：
YourColumn.setCellValueFactory(
cellData ->CellData.getValue().yourObservableList.yourFloatProperty());
列表中的数字应为 "FloatProperty"。
- 为除最后一个以外的所有设置监听器。 （你可以循环执行此操作）
- 每个听众都应该调用您的求和函数。此函数应计算列表的最后一个元素 = 列表中其他元素的总和
- "TableView" 会自动更新。
在 JavaFX 中就像在 Swing 中一样：最快的方法是创建第二个 table。
你可以看看summary table sample code on this gist。
截图：
我会通过实现一个 TransformationList 来做到这一点，它在实际数据列表的末尾添加一个额外的元素。
在我的 example 中，我有一个 TableView 显示 LineItems（我的模型 class），所以我的 TransformationList 实现看起来像：
public class LineItemListWithTotal extends TransformationList<LineItem, LineItem> {
private final TotalLine totalLine ;
protected LineItemListWithTotal(
ObservableList<? extends LineItem> source) {
super(source);
totalLine = new TotalLine(source);
}
@Override
protected void sourceChanged(Change<? extends LineItem> c) {
// no need to modify change:
// indexes generated by the source list will match indexes in this list
fireChange(c);
}
@Override
public int getSourceIndex(int index) {
if (index < getSource().size()) {
return index ;
}
return -1 ;
}
@Override
public LineItem get(int index) {
if (index < getSource().size()) {
return getSource().get(index);
} else if (index == getSource().size()) {
return totalLine ;
} else throw new ArrayIndexOutOfBoundsException(index);
}
@Override
public int size() {
return getSource().size() + 1 ;
}
}
您可能会发现您需要模型 class 的特殊子class 以便轻松完成这项工作（在本例中我子classed LineItem TotalLine）。
使用提取器创建您的实际数据列表，该提取器检索您在计算 "total" 行时需要观察的属性（即该行所依赖的属性）：
ObservableList<LineItem> items = FXCollections.observableArrayList(item ->
new Observable[] {item.totalProperty()});
然后用它来创建 TransformationList 并将 TransformationList 传递给控件：
table.setItems(new LineItemListWithTotal(items));
我在特殊子class中管理总行的观察者实现总计：
public class TotalLine extends LineItem {
private final ReadOnlyObjectWrapper<Double> total = new ReadOnlyObjectWrapper<>();
public TotalLine(ObservableList<? extends LineItem> items) {
super("Total", null, null);
total.bind(Bindings.createObjectBinding(() ->
items.stream().collect(Collectors.summingDouble(LineItem::getTotal)), items));
}
@Override
public ReadOnlyObjectProperty<Double> totalProperty() {
return total ;
}
}
这样，当向原始数据列表添加或从原始数据列表中删除任何内容时，或者如果提取器中任何元素的任何属性发生变化，将重新计算总计行的总数。
完整的例子是here
如何在 table(TreeTableView - JavaFX 或 TableView) 的底部做一行求和？ （对不起我的英语不好） 请写一个例子。
图片（总计）例如 http://i.stack.imgur.com/uRLTZ.gif
在每一栏下面我都放了一个标签来显示SUM.But这对我来说不好
一些FXML `
<AnchorPane fx:id="anchorPaneWithTable" minHeight="0.0" minWidth="0.0" prefHeight="538.0" prefWidth="1275.0">
<children>
<TreeTableView fx:id="treeTableMainStat" prefHeight="386.0" prefWidth="1303.0" showRoot="false" AnchorPane.bottomAnchor="11.0" AnchorPane.leftAnchor="10.0" AnchorPane.rightAnchor="10.0" AnchorPane.topAnchor="10.0">
<columns>
<TreeTableColumn fx:id="treeProgramNameCol" editable="false" prefWidth="230.0" resizable="false" text="AP Name" />
<TreeTableColumn fx:id="treeLastDateCol" editable="false" prefWidth="90.0" resizable="false" text="Last Date" />
<TreeTableColumn fx:id="treeLoginCol" editable="false" prefWidth="70.0" resizable="false" text="Login" />
<TreeTableColumn fx:id="treeAffiliateIDCol" editable="false" prefWidth="92.0" resizable="false" text="Affiliate ID" />
<TreeTableColumn fx:id="treeRawClicksCol" editable="false" resizable="false" text="Raw" />
<TreeTableColumn fx:id="treeUniqueClicksCol" editable="false" resizable="false" text="Uniq" />
<TreeTableColumn fx:id="treeSignupCounterCol" editable="false" prefWidth="67.0" resizable="false" text="SignupC" />
<TreeTableColumn fx:id="treeSignupMoneyCol" editable="false" minWidth="3.0" prefWidth="77.0" resizable="false" text="SignupM" />
<TreeTableColumn fx:id="treeRebillCounterCol" editable="false" minWidth="0.0" prefWidth="66.0" resizable="false" text="RebillC" />
<TreeTableColumn fx:id="treeRebillMoneyCol" editable="false" prefWidth="78.0" resizable="false" text="RebillM" />
<TreeTableColumn fx:id="treeRefundChargebackCounterCol" editable="false" prefWidth="105.0" resizable="false" text="R/Ch Counter" />
<TreeTableColumn fx:id="treeRefundChargebackMoneyCol" editable="false" prefWidth="104.0" resizable="false" text="R/Ch Money" />
<TreeTableColumn fx:id="treeTotalMoneyCol" editable="false" minWidth="0.0" prefWidth="110.0" resizable="false" text="Total Money" />
</columns>
<contextMenu>
<ContextMenu>
<items>
<MenuItem mnemonicParsing="false" onAction="#handleAddNewAffiliateProgram" text="Add new AP" />
<MenuItem mnemonicParsing="false" text="Unspecified Action" />
<MenuItem mnemonicParsing="false" text="Unspecified Action" />
<MenuItem mnemonicParsing="false" onAction="#handleDeleteAffiliateProgram" text="Delete AP" />
<SeparatorMenuItem mnemonicParsing="false" />
<MenuItem mnemonicParsing="false" onAction="#handleEditAP" text="Properties" />
</items>
</ContextMenu>
</contextMenu>
</TreeTableView>
<ProgressIndicator fx:id="refreshingIndicator" layoutX="478.0" layoutY="124.0" prefHeight="250.0" prefWidth="374.0" progress="-1.0" AnchorPane.leftAnchor="478.0" AnchorPane.topAnchor="124.0" />
</children>
</AnchorPane>
</content>
</Tab>
<Tab closable="false" text="Empty Tab">
<content>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0" visible="false" />
</content>
</Tab>
</tabs>
</TabPane>
<HBox prefHeight="35.0">
<children>
<Label fx:id="apNameLab" prefHeight="30.0" prefWidth="229.0" text="Label" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="lastDateLab" prefHeight="30.0" prefWidth="85.0" text="LastDate" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="loginLab" prefHeight="30.0" prefWidth="64.0" text="Login" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="affilIdLab" prefHeight="30.0" prefWidth="86.0" text="AffID" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rawLab" prefHeight="30.0" prefWidth="74.0" text="rawLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="uniqLab" prefHeight="30.0" prefWidth="74.0" text="uniqLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="signCLab" prefHeight="30.0" prefWidth="61.0" text="SignCLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="signMLab" prefHeight="30.0" prefWidth="71.0" text="SignMLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rebillCLab" prefHeight="30.0" prefWidth="61.0" text="RebillCLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rebillMLab" prefHeight="30.0" prefWidth="72.0" text="RebillMLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rChCountLab" prefHeight="30.0" prefWidth="99.0" text="RChCounLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="rChMonLab" prefHeight="30.0" prefWidth="98.0" text="RChMonLab" />
<Separator orientation="VERTICAL" prefHeight="200.0" />
<Label fx:id="totalLab" prefHeight="30.0" prefWidth="110.0" text="TotalLab" />
</children>
<padding>
<Insets left="10.0" />
</padding>
</HBox>
</children>
</VBox>`
将标签绑定到列
//TreeView_Begin
@FXML
private TreeTableView<APDataFromDB> treeTableMainStat;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeProgramNameCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeLastDateCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeLoginCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeAffiliateIDCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeRawClicksCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeUniqueClicksCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeSignupCounterCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeSignupMoneyCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeRebillCounterCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeRebillMoneyCol;
@FXML
private TreeTableColumn<APDataFromDB, Integer> treeRefundChargebackCounterCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeRefundChargebackMoneyCol;
@FXML
private TreeTableColumn<APDataFromDB, Double> treeTotalMoneyCol;
//TreeView_End
@FXML
Label apNameLab = new Label();
@FXML
Label lastDateLab = new Label();
@FXML
Label loginLab = new Label();
@FXML
Label affilIdLab = new Label();
@FXML
Label rawLab = new Label();
@FXML
Label uniqLab = new Label();
@FXML
Label signCLab = new Label();
@FXML
Label signMLab = new Label();
@FXML
Label rebillCLab = new Label();
@FXML
Label rebillMLab = new Label();
@FXML
Label rChCountLab = new Label();
@FXML
Label rChMonLab = new Label();
@FXML
Label totalLab = new Label();
@FXML
private void initialize() throws SQLException {
final String pattern = "yyyy-MM-dd";
datePickerStart.setValue(LocalDate.now());
datePickerEnd.setValue(LocalDate.now());
allDownloadsProgressBar.setProgress(0);
refreshingIndicator.setVisible(false);
StringConverter stringConverter = new StringConverter<LocalDate>() {
DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern(pattern);
@Override
public String toString(LocalDate date) {
if (date != null) {
return dateFormatter.format(date);
} else {
return "";
}
}
@Override
public LocalDate fromString(String string) {
if (string != null && !string.isEmpty()) {
return LocalDate.parse(string, dateFormatter);
} else {
return null;
}
}
};
datePickerStart.setConverter(stringConverter);
datePickerStart.setPromptText(pattern.toLowerCase());
datePickerEnd.setConverter(stringConverter);
datePickerEnd.setPromptText(pattern.toLowerCase());
// устанавливаем тип и значение которое должно хранится в колонке
//TreeView_begin
treeProgramNameCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("apName"));
treeLastDateCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("lastDate"));
treeLoginCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("login"));
treeAffiliateIDCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("affiliateID"));
treeRawClicksCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("raw"));
treeUniqueClicksCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("uniq"));
treeSignupCounterCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("signupCounter"));
treeSignupMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("signup"));
treeRebillCounterCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("rebillCounter"));
treeRebillMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("rebillMoney"));
treeRefundChargebackCounterCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("refundChargebackCounter"));
treeRefundChargebackMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("refundChargebackMoney"));
treeTotalMoneyCol.setCellValueFactory(new TreeItemPropertyValueFactory<>("totalMoney"));
// заполняем таблицу данными
// Platform.runLater(new Runnable() {
// @Override
// public void run() {
//
// }
// });
new Thread(new Runnable() {
@Override
public void run() {
buildTreeOfStatsFromDB();
//Binding
apNameLab.prefWidthProperty().bind(treeProgramNameCol.widthProperty().multiply(1));
lastDateLab.prefWidthProperty().bind(treeLastDateCol.widthProperty().multiply(1));
loginLab.prefWidthProperty().bind(treeLoginCol.widthProperty().multiply(1));
affilIdLab.prefWidthProperty().bind(treeAffiliateIDCol.widthProperty().multiply(1));
rawLab.prefWidthProperty().bind(treeRawClicksCol.widthProperty().multiply(1));
uniqLab.prefWidthProperty().bind(treeUniqueClicksCol.widthProperty().multiply(1));
signCLab.prefWidthProperty().bind(treeSignupCounterCol.widthProperty().multiply(1));
signMLab.prefWidthProperty().bind(treeSignupMoneyCol.widthProperty().multiply(1));
rebillCLab.prefWidthProperty().bind(treeRebillCounterCol.widthProperty().multiply(1));
rebillMLab.prefWidthProperty().bind(treeRebillMoneyCol.widthProperty().multiply(1));
rChCountLab.prefWidthProperty().bind(treeRefundChargebackCounterCol.widthProperty().multiply(1));
rChMonLab.prefWidthProperty().bind(treeRefundChargebackMoneyCol.widthProperty().multiply(1));
totalLab.prefWidthProperty().bind(treeTotalMoneyCol.widthProperty().multiply(1));
getSumLabel();
}
}).start();
// buildTreeOfStatsFromDB();
// Enable arrow keys for delete AP
treeTableMainStat.addEventFilter(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
@Override
public void handle(KeyEvent keyEvent) {
if (keyEvent.getCode() == KeyCode.Y && keyEvent.isControlDown()) {
handleDeleteAffiliateProgram();
keyEvent.consume();
}
}
});
}
获取所有 SUM
</p>
<pre><code>private void getSumLabel() {
long rawHitsSum = 0;
long uniqHitsSum = 0;
long signCountSum = 0;
double signMoneySum = 0;
long rebillCountSum = 0;
double rebillMoneySum = 0;
long rChCountSum = 0;
double rChMoneySum = 0;
double totalMoneySum = 0;
ObservableList<TreeItem<APDataFromDB>> allData = rootItem.getChildren();
for (TreeItem<APDataFromDB> apDataFromDBTreeItem : allData) {
rawHitsSum += apDataFromDBTreeItem.getValue().getRaw();
uniqHitsSum += apDataFromDBTreeItem.getValue().getUniq();
signCountSum += apDataFromDBTreeItem.getValue().getSignupCounter();
signMoneySum += apDataFromDBTreeItem.getValue().getSignup();
rebillCountSum += apDataFromDBTreeItem.getValue().getRebillCounter();
rebillMoneySum += apDataFromDBTreeItem.getValue().getRebillMoney();
rChCountSum += apDataFromDBTreeItem.getValue().getRefundChargebackCounter();
rChMoneySum += apDataFromDBTreeItem.getValue().getRefundChargebackMoney();
totalMoneySum += apDataFromDBTreeItem.getValue().getTotalMoney();
}
final long finalRawHitsSum = rawHitsSum;
final long finalUniqHitsSum = uniqHitsSum;
final long finalSignCountSum = signCountSum;
final long finalSignCountSum1 = signCountSum;
final long finalRebillCountSum = rebillCountSum;
final double finalRebillMoneySum = rebillMoneySum;
final long finalRChCountSum = rChCountSum;
final double finalRChMoneySum = rChMoneySum;
final double finalTotalMoneySum = totalMoneySum;
Platform.runLater(new Runnable() {
@Override
public void run() {
rawLab.setText(String.valueOf(finalRawHitsSum));
uniqLab.setText(String.valueOf(finalUniqHitsSum));
signCLab.setText(String.valueOf(finalSignCountSum1));
signMLab.setText(String.valueOf(finalSignCountSum));
rebillCLab.setText(String.valueOf(finalRebillCountSum));
rebillMLab.setText(String.valueOf(finalRebillMoneySum));
rChCountLab.setText(String.valueOf(finalRChCountSum));
rChMonLab.setText(String.valueOf(finalRChMoneySum));
totalLab.setText(String.valueOf(finalTotalMoneySum));
}
});
System.out.println(rawHitsSum);
}
编辑：不是问题的答案。我误解了问题。
我没有示例，但我可以向您解释一种方法。
- 使用 "TableView"
每一列应该是 "TableColumn"。这个 "TableColumn" 应该与 "ObsverbableList" 相关：
YourColumn.setCellValueFactory( cellData ->CellData.getValue().yourObservableList.yourFloatProperty());列表中的数字应为 "FloatProperty"。
- 为除最后一个以外的所有设置监听器。 （你可以循环执行此操作）
- 每个听众都应该调用您的求和函数。此函数应计算列表的最后一个元素 = 列表中其他元素的总和
- "TableView" 会自动更新。
在 JavaFX 中就像在 Swing 中一样：最快的方法是创建第二个 table。
你可以看看summary table sample code on this gist。
截图：
我会通过实现一个 TransformationList 来做到这一点，它在实际数据列表的末尾添加一个额外的元素。
在我的 example 中，我有一个 TableView 显示 LineItems（我的模型 class），所以我的 TransformationList 实现看起来像：
public class LineItemListWithTotal extends TransformationList<LineItem, LineItem> {
private final TotalLine totalLine ;
protected LineItemListWithTotal(
ObservableList<? extends LineItem> source) {
super(source);
totalLine = new TotalLine(source);
}
@Override
protected void sourceChanged(Change<? extends LineItem> c) {
// no need to modify change:
// indexes generated by the source list will match indexes in this list
fireChange(c);
}
@Override
public int getSourceIndex(int index) {
if (index < getSource().size()) {
return index ;
}
return -1 ;
}
@Override
public LineItem get(int index) {
if (index < getSource().size()) {
return getSource().get(index);
} else if (index == getSource().size()) {
return totalLine ;
} else throw new ArrayIndexOutOfBoundsException(index);
}
@Override
public int size() {
return getSource().size() + 1 ;
}
}
您可能会发现您需要模型 class 的特殊子class 以便轻松完成这项工作（在本例中我子classed LineItem TotalLine）。
使用提取器创建您的实际数据列表，该提取器检索您在计算 "total" 行时需要观察的属性（即该行所依赖的属性）：
ObservableList<LineItem> items = FXCollections.observableArrayList(item ->
new Observable[] {item.totalProperty()});
然后用它来创建 TransformationList 并将 TransformationList 传递给控件：
table.setItems(new LineItemListWithTotal(items));
我在特殊子class中管理总行的观察者实现总计：
public class TotalLine extends LineItem {
private final ReadOnlyObjectWrapper<Double> total = new ReadOnlyObjectWrapper<>();
public TotalLine(ObservableList<? extends LineItem> items) {
super("Total", null, null);
total.bind(Bindings.createObjectBinding(() ->
items.stream().collect(Collectors.summingDouble(LineItem::getTotal)), items));
}
@Override
public ReadOnlyObjectProperty<Double> totalProperty() {
return total ;
}
}
这样，当向原始数据列表添加或从原始数据列表中删除任何内容时，或者如果提取器中任何元素的任何属性发生变化，将重新计算总计行的总数。
完整的例子是here