单击一行时使用表格视图数据填充文本字段

Posted 2023-02-26

【中文标题】单击一行时使用表格视图数据填充文本字段

【英文标题】：Populating textfields with tableview data when a line is clicked

【发布时间】：2018-12-02 00:57:20

【问题描述】：

我想使用我在表格视图中加载的数据来填充一些文本字段。 有没有办法制作一个 OnMouseClick 操作事件，该事件将使用来自 tableview 的数据填充一堆文本字段？

我想要这个是因为我想创建一个更新方法，在这种方法中你不必为了改变一个特定的东西而再次编写整个服务细节（如价格、部门、可用性和名称），但这是不是问题，我知道怎么做，只需要使用 tableview 提供的数据自动填充文本字段。

在代码中提供了一些注释。

表格视图的代码：

public class ProgramariDBController implements Initializable 
@FXML
private TextField Serviciu1;
@FXML
private TextField Departament1;
@FXML
private TextField Pret1;
@FXML
private TextField Disponibilitate1;
@FXML
private Label rows;
@FXML
private Label rows;
@FXML
private TextField cpn;
@FXML
private TextField nume1;
@FXML
private TableView<DetaliiProgramari> ProgrDB;
@FXML
private TableColumn<DetaliiProgramari, String> Nume;
@FXML
private TableColumn<DetaliiProgramari, String> Prenume;
@FXML
private TableColumn<DetaliiProgramari, String> Data;
@FXML
private TableColumn<DetaliiProgramari, String> Ora;
@FXML
private TableColumn<DetaliiProgramari, String> Departament;
@FXML
private TableColumn<DetaliiProgramari, String> Doctor;
@FXML
private TableColumn<DetaliiProgramari, String> Nr_telefon;

public LogareController Numeutilzator = new LogareController();
private ObservableList<DetaliiProgramari> Info;

@Override
public void initialize(URL url, ResourceBundle ResurcesFORDAYS) 
    // TODO





@FXML
private void AfiseazaProgramari(ActionEvent event) 
    try 
      ConectaredB ConectaredB=new ConectaredB();
        Connection conectare=ConectaredB.logareDB();

        Info = FXCollections.observableArrayList();
        String CNP=cpn.getText();
        ResultSet IncDate = conectare.createStatement().executeQuery("SELECT *  FROM programari where CNP=" + CNP);
        while (IncDate.next()) 

            Info.add(new DetaliiProgramari(IncDate.getString(2), IncDate.getString(3), IncDate.getString(4),
                    IncDate.getString(5), IncDate.getString(6), IncDate.getString(7), IncDate.getString(8)));
            //I have something like this 
     Serviciu1.setText(IncDate.getString(2)); it did work, but it loaded the first thing that was created in TipServiciu, which is a column in the table, so that doesn't really help, and I won't even paste the whole thing, because it will just be confusing for no reason.
        

     catch (SQLException ex) 
        System.err.println("Error"+ex);
    

    Nume.setCellValueFactory(new PropertyValueFactory<>("Nume"));
    Prenume.setCellValueFactory(new PropertyValueFactory<>("Prenume"));
    Data.setCellValueFactory(new PropertyValueFactory<>("Data"));
    Ora.setCellValueFactory(new PropertyValueFactory<>("Ora"));
    Departament.setCellValueFactory(new PropertyValueFactory<>("Departament"));
    Doctor.setCellValueFactory(new PropertyValueFactory<>("Doctor"));
    Nr_telefon.setCellValueFactory(new PropertyValueFactory<>("Nr_telefon"));

    ProgrDB.setItems(null);
    ProgrDB.setItems(Info);


@FXML 
private void delete(ActionEvent event) throws IOException  
    try  


        String sql = "delete FROM programari where CNP=? ";
        ConectaredB ConectaredB=new ConectaredB();
        Connection conexiune=ConectaredB.logareDB();
        PreparedStatement ps = conexiune.prepareStatement(sql);
        String CNP=cpn.getText();
        ps.setString(1, CNP);
        int count = ps.executeUpdate();

        rows.setText("rows" +count);

     catch (Exception e) 
        // TODO: handle exception
    

 

setter 和 getter，如果他们能以任何可能的方式提供帮助：

public class ServiciiSittersGettersController 

private final StringProperty Serviciu;
private final StringProperty Disponibilitate;
private final StringProperty Pret;
private final StringProperty Departament;



//Default constructor
public ServiciiSittersGettersController(String Serviciu, String Disponibilitate, String Pret, String Departament) 
    this.Serviciu = new SimpleStringProperty(Serviciu);
    this.Disponibilitate = new SimpleStringProperty(Disponibilitate);
    this.Pret = new SimpleStringProperty(Pret);
    this.Departament = new SimpleStringProperty(Departament);



public String getDepartament() 
    return Departament.get();


public StringProperty departamentProperty() 
    return Departament;


public void setDepartament(String departament) 
    this.Departament.set(departament);


public String getServiciu() 
    return Serviciu.get();


public StringProperty serviciuProperty() 
    return Serviciu;


public void setServiciu(String serviciu) 
    this.Serviciu.set(serviciu);


public String getDisponibilitate() 
    return Disponibilitate.get();


public StringProperty disponibilitateProperty() 
    return Disponibilitate;


public void setDisponibilitate(String disponibilitate) 
    this.Disponibilitate.set(disponibilitate);


public String getPret() 
    return Pret.get();


public StringProperty pretProperty() 
    return Pret;


public void setPret(String pret) 
    this.Pret.set(pret);

【问题讨论】：

从侦听器到表选择模型的selectedItem 属性执行此操作。我假设您知道如何设置 TextFields 的文本并添加/删除绑定，如果修改应该立即反映在项目类中。您可能还需要对数据库进行UPDATE 查询...DetaliiProgramari 中的不可修改的唯一属性将有助于识别数据库中的行顺便说一句...为什么ServiciiSittersGettersController 类相关btw？它没有在其他代码 sn-p 中使用，也从未在其他任何地方提及。

我会做一些研究，我真的不知道使用这些东西，更新查询部分很简单，我看看我能想出什么，谢谢！

【参考方案1】：

您必须向TableView's getSelectionModel().selectedItemProperty() 添加一个侦听器。

关键代码：

table.getSelectionModel().selectedItemProperty().addListener((obs, oldVal, newVal) -> 

    if (newVal != null) 
        tfFirstName.setText(newVal.getFirstName());
        tfLastName.setText(newVal.getLastName());
        tfEmail.setText(newVal.getEmail());
    
);

完整代码：

主类

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;

public class TableViewSample extends Application


    public static void main(String[] args)
    
        launch(args);
    

    @Override
    public void start(Stage stage)
    
        final ObservableList<Person> data = FXCollections.observableArrayList(
                new Person("Jacob", "Smith", "[e-mail]"),
                new Person("Isabella", "Johnson", "[e-mail]"),
                new Person("Ethan", "Williams", "[e-mail]"),
                new Person("Emma", "Jones", "[e-mail]"),
                new Person("Michael", "Brown", "[e-mail]")
        );

        TableView<Person> table = new TableView();

        Scene scene = new Scene(new Group());
        stage.setTitle("Table View Sample");
        stage.setWidth(500);
        stage.setHeight(500);

        final Label label = new Label("Address Book");
        label.setFont(new Font("Arial", 20));

        TableColumn firstNameCol = new TableColumn("First Name");
        TableColumn lastNameCol = new TableColumn("Last Name");
        TableColumn emailCol = new TableColumn("Email");
        firstNameCol.setCellValueFactory(
                new PropertyValueFactory("firstName")
        );
        lastNameCol.setCellValueFactory(
                new PropertyValueFactory("lastName")
        );
        emailCol.setCellValueFactory(
                new PropertyValueFactory("email")
        );
        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
        table.setItems(data);

        TextField tfFirstName = new TextField();
        TextField tfLastName = new TextField();
        TextField tfEmail = new TextField();

        table.getSelectionModel().selectedItemProperty().addListener((obs, oldVal, newVal) -> 
            if (newVal != null) 
                tfFirstName.setText(newVal.getFirstName());
                tfLastName.setText(newVal.getLastName());
                tfEmail.setText(newVal.getEmail());
            
        );

        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(label, table, new HBox(new Label("First Name: "), tfFirstName), new HBox(new Label("Last Name: "), tfLastName), new HBox(new Label("Email: "), tfEmail));

        scene.setRoot(vbox);

        stage.setScene(scene);
        stage.show();
    

人员类

import javafx.beans.property.SimpleStringProperty;

public class Person


    private final SimpleStringProperty firstName;
    private final SimpleStringProperty lastName;
    private final SimpleStringProperty email;

    public Person(String fName, String lName, String email)
    
        this.firstName = new SimpleStringProperty(fName);
        this.lastName = new SimpleStringProperty(lName);
        this.email = new SimpleStringProperty(email);
    

    public String getFirstName()
    
        return firstName.get();
    

    public void setFirstName(String fName)
    
        firstName.set(fName);
    

    public String getLastName()
    
        return lastName.get();
    

    public void setLastName(String fName)
    
        lastName.set(fName);
    

    public String getEmail()
    
        return email.get();
    

    public void setEmail(String fName)
    
        email.set(fName);