java - 如何使用 JavaFX 从实体设置 TableView<> 中的值

Question

我正在尝试实现以下JavaFX与 Spring实现，但无法掌握TableView中如何操作和显示实体形式。 (我的意思是 Gender 类。这只是一个实体，代表表，它只能包含两个值: male 或 female - 我想在 TableView 中显示这个值)

人:

@Entity
@Table(name = "passport_data")
public class Person {

  @Id
  @Column(name = "id")
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private long id;

  @Column(name = "ipn", unique = true)
  private long ipn;

  @One_to_One
  private Gender gender;
//getters & setters
}

性别

  @Entity
  @Table(name = "gender")

public class Gender {

    @Id
    @Column(name = "id")
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;

    @Column(name = "gender")
    String gender;
//getters & setters
}

在 MainController我是实现类TableView<>用于数据成像和编辑表:

Controller :

public class MainController {

    @FXML private TableView<Person> table;

    @FXML private TextField ipnTxt; //Long data in Person entity
    @FXML private TextField genderTxt; //Other entity (Gender) in Person entity

private ObservableList<Person> data;

@PostConstruct
public void init(){
    List<Person> personList = personService.getAllPerson();
    data = FXCollections.observableArrayList(personList);

    TableColumn<Person, String> ipnColumn = new TableColumn<>("IPN");
    ipnColumn.setCellValueFactory(new PropertyValueFactory<>("ipn"));

    TableColumn<Person, String> genderColumn = new TableColumn<>("Gender");
    genderColumn.setCellValueFactory(new PropertyValueFactory<>("gender"));

    table.getColumns().setAll(ipnColumn, genderColumn);
    table.setItems(data);
}

.fxml 文件*部分，执行表显示:

<TableView fx:id="table" editable="true" prefHeight="200.0" prefWidth="405.0" tableMenuButtonVisible="true" AnchorPane.bottomAnchor="50.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
            <columnResizePolicy><TableView fx:constant="CONSTRAINED_RESIZE_POLICY" /></columnResizePolicy>
        </TableView>
        <HBox alignment="CENTER" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="10.0" AnchorPane.rightAnchor="10.0">
            <children>
                <!--<TextField fx:id="id" promptText="ID">-->
                    <!--<HBox.margin>-->
                        <!--<Insets right="3.0"/>-->
                    <!--</HBox.margin>-->
                <!--</TextField>-->
                <TextField fx:id="ipnTxt" promptText="IPN">
                    <HBox.margin>
                        <Insets right="3.0"/>
                    </HBox.margin>
                </TextField>
                <TextField fx:id="genderTxt" promptText="Gender">
                    <HBox.margin>
                        <Insets right="3.0"/>
                    </HBox.margin>
                </TextField>
                <Button minWidth="-Infinity" mnemonicParsing="false" onAction="#addPerson" text="Add" />
            </children>
        </HBox>

所以，结果我有来自 IPN 的数据专栏和引用 Gender gender 中的对象栏目:

但我需要得到 String gender这些对象的值(value)。在这种情况下如何从对象获取和放置值？

其他信息

全人类

package com.production.weighlifting.weightliftingviewer.model.domain;

import javax.persistence.*;
import java.sql.Date;

@Entity
@Table(name = "passport_data")
public class Person {

  @Id
  @Column(name = "id")
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private long id;

  @Column(name = "ipn", unique = true)
  private long ipn;

  @Column(name = "passport_number", unique = true)
  private String passportNumber;

  @Column(name = "name")
  private String name;

  @Column(name = "last_name")
  private String lastName;

  @Column(name = "born")
  private java.sql.Date born;

  public String genderValue;

  @OneToOne
//  @Column(name = "gender_id")
  private Gender gender;

  public Person(){

  }

  public Person(long ipn, String passportNumber, String name, String lastName, Date born, Gender gender) {
    this.ipn = ipn;
    this.passportNumber = passportNumber;
    this.name = name;
    this.lastName = lastName;
    this.born = born;
    this.gender = gender;
    this.genderValue = gender.getGender();
  }

  public long getId() {
    return id;
  }

  public void setId(long id) {
    this.id = id;
  }


  public long getIpn() {
    return ipn;
  }

  public void setIpn(long ipn) {
    this.ipn = ipn;
  }


  public String getPassportNumber() {
    return passportNumber;
  }

  public void setPassportNumber(String passportNumber) {
    this.passportNumber = passportNumber;
  }


  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }


  public String getLastName() {
    return lastName;
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;
  }


  public java.sql.Date getBorn() {
    return born;
  }

  public void setBorn(java.sql.Date born) {
    this.born = born;
  }

  public Gender getGender() {
    return gender;
  }

  public void setGender(Gender gender) {
    this.gender = gender;
  }

  public String getGenderValue(){return genderValue;}
}

完整性别类别

@Entity
@Table(name = "gender")
public class Gender {

    @Id
    @Column(name = "id")
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;

    @Column(name = "gender")
    private String gender;

    public Gender(){

    }

    public long getId() {
        return id;
    }

    public Gender(GenderEnum genderEnum) {
        this.gender = genderEnum.name();
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }
}

Answer 1

只需自行实现cellValueFactory:

TableColumn<Person, String> genderColumn = new TableColumn<>("Gender");
// genderColumn.setCellValueFactory(new PropertyValueFactory<>("gender"));
genderColumn.setCellValueFactory(cd -> new SimpleStringProperty(cd.getValue().getGender().getGender()));

<小时/>

或者，您可以使用 cellFactory 自定义 Gender 对象的显示方式:

public class GenderTableCell<T> extends TableCell<T, Gender> {
    @Override
    protected void updateItem(Gender item, boolean empty) {
        super.updateItem(item, empty);
        setText(empty || item == null ? "" : item.getGender());
    }
}

您可以使用 updateItem 方法来代替，例如更新用作 TableCell.graphic 的 ImageView 以显示性别符号...

TableColumn<Person, Gender> genderColumn = new TableColumn<>("Gender");
genderColumn.setCellValueFactory(new PropertyValueFactory<>("gender"));
genderColumn.setCellFactory(col -> new GenderTableCell<>());