Tableview.getSelectionModel无效。在建议形式@James_D之后，我使用了Model类（软件）来选择我需要的列，同时将SQL拉到tableview。我在这里搜索，网页，移动代码和检查intellisense，我可以在任何地方找到的最好的例子在下面的SoftwareController代码中被注释掉，什么都没有用？
在使用Model类之前，我已经在示例4工作的SoftwareController中进行了操作，它给出了第0列的单元格数据，其中我点击了该行，我用它来提取更多的SQL数据。现在，newValue.get(0)，newValue的错误未显示get()或getid可用。
我已将SelectedItem更改为索引并添加了toString以及所有这些，我得到了fxml.software@sometext或行索引。示例1给出了任何单元格的单元格数据，但我只想要我选择的行上的第一列，在我的例子中是一个ID，而不是行索引。
我现在还必须使用@SuppressWarnings进行＆＃34; Raw＆＃34;错误，这是因为我在初始化？
任何帮助或指示将不胜感激。
SoftwareController
public class SoftwareController extends Application implements Initializable {
private Statement statement;
Connection conn = null;
@FXML Button btnSoftware;
@FXML Label lblTest;
@FXML TableView tblSoftware;
@FXML TableColumn CI_IDcol;
@FXML TableColumn Namecol;
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception {
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/fxml/Software.fxml")); //load Software fxml file
Parent root1 = (Parent) fxmlLoader.load();
primaryStage.setScene(new Scene(root1));
primaryStage.show();
}
private static ObservableList<Software>data;
@FXML private TextField txtFilter;
private Object getCellData;
@SuppressWarnings({ "unchecked", "rawtypes" }) //added due to TableView getselecionModel code
@Override
public void initialize(URL location, ResourceBundle resources) {
try {
data = FXCollections.observableArrayList();
conn = DBconnection.makeConnection();
statement = conn.createStatement();
String SQL = "SELECT * FROM Data_CMDB_Main";
ResultSet rs = statement.executeQuery(SQL);
while (rs.next()) {
data.add(new Software(rs.getString("CI_ID"),
rs.getString("Name")));
CI_IDcol.setCellValueFactory(new PropertyValueFactory("CI_ID"));
Namecol.setCellValueFactory(new PropertyValueFactory("Name"));
tblSoftware.setItems(null);
tblSoftware.setItems(data);
//TableView.selection
//get row example 1
/*tblSoftware.getSelectionModel().selectedItemProperty().addListener(new ChangeListener() {
@Override
public void changed(ObservableValue observableValue, Object oldValue, Object newValue) {
if(tblSoftware.getSelectionModel().getSelectedItem() != null) {
TableViewSelectionModel selectionModel = tblSoftware.getSelectionModel();
ObservableList selectedCells = selectionModel.getSelectedCells();
TablePosition tablePosition = (TablePosition) selectedCells.get(0);
Object val = tablePosition.getTableColumn().getCellData(newValue);
//Object val = tblSoftware.getColumns().get(0).toString();
System.out.println(val); //int row = tablePosition.getRow();
}
}
});*/
//get row example 2 only gives index of filtered rows
//tblSoftware.getSelectionModel().selectedIndexProperty().addListener((v, oldValue, newValue) -> System.out.println(newValue)); //gets all row data
//get row example 3 ItemProperty seems correct just not giving readable row identification
//tblSoftware.getSelectionModel().selectedItemProperty().addListener((v, oldValue, newValue) -> System.out.println(newValue)); //gets all row data
///get row example 4
//@Override
/*tblSoftware.getSelectionModel().selectedItemProperty().addListener( //gets any row column
(observable, oldValue, newValue) -> {
if (newValue == null) {
lblTest.setText("");
return;
}
lblTest.setText("Selected Number: " + newValue.get(0));
}
);*/
///get row example 5
/*tblSoftware.getSelectionModel().selectedItemProperty().addListener( //gets any row column
new ChangeListener<IdentifiedName>() {
@Override
public void changed (
ObservableValue<? extends IdentifiedName> observable,
IdentifiedName oldValue,
IdentifiedName newValue
){
if(newValue == null) {
lblTest.setText("");
return;
}
lblTest.setText("Selected Number: " + + newValue.getId(0));
}
}
); */
//filter
txtFilter.setPromptText("Text Filter");
txtFilter.textProperty().addListener(new InvalidationListener() {
@Override
public void invalidated(Observable o) {
tblSoftware.getSelectionModel().clearSelection(); // this gives no errors when switching back to filter box when row previously selected
if(txtFilter.textProperty().get().isEmpty()) {
tblSoftware.setItems(data);
return;
}
ObservableList<Software> tableItems = FXCollections.observableArrayList();
ObservableList<TableColumn<Software, ?>> cols = tblSoftware.getColumns();
for(int i=0; i<data.size(); i++) {
for(int j=0; j<cols.size(); j++) {
TableColumn col = cols.get(j);
String cellValue = col.getCellData(data.get(i)).toString();
cellValue = cellValue.toLowerCase();
if(cellValue.contains(txtFilter.textProperty().get().toLowerCase())) {
tableItems.add(data.get(i));
break;
}
}
}
tblSoftware.setItems(tableItems);
}
});
}
} catch (SQLException e) {
e.printStackTrace();
}
}
protected void setIndex(int selectedIndex) {
// TODO Auto-generated method stub
}
public void btnSoftwarePressed(){
lblTest.setText("Button works");
}
}
软件类
package fxml;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
public class Software {
private StringProperty CI_ID;
private StringProperty Name;
public Software(String CI_ID, String Name) {
this.CI_ID = new SimpleStringProperty(CI_ID);
this.Name = new SimpleStringProperty(Name);
}
public StringProperty CI_IDProperty() {
return CI_ID;
}
public StringProperty NameProperty() {
return Name;
}
}
软件fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.*?>
<?import javafx.scene.text.*?>
<?import java.lang.*?>
<?import java .util.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.40" xmlns:fx="http://javafx.com/fxml/1" fx:controller="fxml.SoftwareController">
<center>
<TableView fx:id="tblSoftware" prefHeight="200.0" prefWidth="600.0" BorderPane.alignment="CENTER">
<columns>
<TableColumn fx:id="CI_IDcol" prefWidth="100.0" text="CI_ID" />
<TableColumn fx:id="Namecol" prefWidth="150.0" text="Name" />
</columns>
</TableView>
</center>
<top>
<VBox prefHeight="83.0" prefWidth="600.0" BorderPane.alignment="CENTER">
<children>
<HBox prefHeight="100.0" prefWidth="200.0">
<children>
<Button fx:id="btnSoftware" mnemonicParsing="false" onAction="#btnSoftwarePressed" text="Button" />
<Label fx:id="lblTest" prefHeight="28.0" prefWidth="158.0" text="Label" />
<ParallelCamera />
</children>
</HBox>
<HBox>
<children>
<TextField fx:id="txtFilter" />
</children>
</HBox>
</children>
</VBox>
</top>
</BorderPane>
答案 0 :(得分：0)
我不确定你想要做什么，但是我可以给你我的方法将数据从db插入到tableview中，之后，使用之前加载的数据从db获取数据进入tableview。
我首先在控制器中创建了一个内部类，它将代表从数据库中保存/加载的实例：
public static class Detector {
private String name;
private String conn_type;
private int num_detect;
private String serial_port;
private int data_bits;
private int stop_bits;
private String parity;
private String ip;
private int eth_port;
private int historic;
public Detector(String name, String conn_type, int num_detect, String serial_port, int speed,
int data_bits, int stop_bits, String parity, String ip, int eth_port, int his){
this.name = name;
this.conn_type = conn_type;
this.num_detect = num_detect;
this.serial_port = serial_port;
this.data_bits = data_bits;
this.stop_bits = stop_bits;
this.parity = parity;
this.ip = ip;
this.eth_port = eth_port;
this.historic = his;
}
}
除此之外，我宣布了tableview
public class Controller implements Initializable {
@FXML
private TableView<Detector> detectors;
.
.
.
我使用从查询中获得的数据创建了tableview：
DBConnection c = new DBConnection();
c.connect();
try{
String sql = "select * from detector order by name";
ResultSet rs = c.query(sql);
ObservableList<Detector> data = FXCollections.observableArrayList();
while(rs.next()){
data.add(new Detector(rs.getString("name"),
rs.getString("conn_type"),
Integer.parseInt(rs.getString("num_detect")),
rs.getString("serial_port"),
Integer.parseInt(rs.getString("speed")),
Integer.parseInt(rs.getString("data_bits")),
Integer.parseInt(rs.getString("stop_bits")),
rs.getString("parity"),
rs.getString("ip"),
Integer.parseInt(rs.getString("puerto_socket")),
Integer.parseInt(rs.getString("historico"))
));
}
TableColumn colName = new TableColumn("Name");
colName.setCellValueFactory(new PropertyValueFactory<Detector, String>("name"));
detectors.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> loadName(newValue));
detectors.setItems(data);
detectors.getColumns().addAll(nombreCol);
//Add a column for every column data you want to show
然后，您必须定义侦听器调用的方法的行为（在我的情况下，＆＃34; loadName＆＃34;）
private void loadName(Detector r){
//here you could, for example, generate a sql query with the data received in r
}