如何通过 Hibernate 将 H2 数据库项目打印到 JavaFx SceneBuilder 准备的 TableView 上
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【中文标题】如何通过 Hibernate 将 H2 数据库项目打印到 JavaFx SceneBuilder 准备的 TableView 上【英文标题】：How to print H2 database items onto a JavaFx SceneBuilder prepared TableView via Hibernate 【发布时间】：2014-02-18 09:40:10 【问题描述】：我一直在尝试通过 Hibernate 将 H2 数据库项目打印到 JavaFx SceneBuilder 准备的 TableView 上，但失败得很惨。请帮我弄清楚我哪里出错了。
这是我的控制器类：
import java.net.URL;
import java.util.Iterator;
import java.util.List;
import java.util.ResourceBundle;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
public class FXMLDocumentController implements Initializable
@FXML
private TableView<NewBeautifulKiwi> KIWI_TABLE;
@FXML
private TableColumn<NewBeautifulKiwi, Integer> KiwiId;
@FXML
private TableColumn<NewBeautifulKiwi, String> Kiwi;
@Override
public void initialize(URL url, ResourceBundle rb)
System.out.println("Now we print onto out onto our TableView");
KiwiId.setCellValueFactory(new PropertyValueFactory<NewBeautifulKiwi, Integer>("KiwiId"));
Kiwi.setCellValueFactory(new PropertyValueFactory<NewBeautifulKiwi, String>("Kiwi"));
KIWI_TABLE.getItems().setAll(gobbledyGook());
private ObservableList<NewBeautifulKiwi> gobbledyGook()
ObservableList<NewBeautifulKiwi> data;
data = FXCollections.observableArrayList();
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction transaction = null;
try
transaction = session.beginTransaction();
List courses = session.createQuery("from KIWI_TABLE").list();
for (Iterator iterator = courses.iterator(); iterator.hasNext();)
NewBeautifulKiwi course = (NewBeautifulKiwi) iterator.next();
System.out.println(course.getKiwi());
data.add(course);
transaction.commit();
catch (HibernateException e)
transaction.rollback();
e.printStackTrace();
finally
session.close();
return data;
FXML 文件：
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="293.0" prefWidth="320.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="tableviewfix.FXMLDocumentController">
<children>
<TableView fx:id="KIWI_TABLE" prefHeight="293.0" prefWidth="320.0" tableMenuButtonVisible="false" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<columns>
<TableColumn prefWidth="75.0" text="KiwiId" fx:id="KiwiId" />
<TableColumn prefWidth="75.0" text="Kiwi" fx:id="Kiwi" />
</columns>
</TableView>
</children>
</AnchorPane>
POJO 类：
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity(name = "KIWI_TABLE")
public class NewBeautifulKiwi implements Serializable
@Id
@GeneratedValue
private int KiwiId;
private String Kiwi;
public int getKiwiId()
return KiwiId;
public void setKiwiId(int KiwiId)
this.KiwiId = KiwiId;
public String getKiwi()
return Kiwi;
public void setKiwi(String Kiwi)
this.Kiwi = Kiwi;
休眠.cfg：
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">org.h2.Driver</property>
<property name="connection.url">jdbc:h2:file:C:/WAKILI/WAKILIdb</property>
<property name="connection.username">sa</property>
<property name="connection.password"></property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.H2Dialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>
<!-- Names the annotated entity class -->
<mapping class="tableviewfix.NewBeautifulKiwi"/>
</session-factory>
</hibernate-configuration>
编辑：
我刚刚意识到所有新条目的 @GeneratedValue 都为 0。我认为这就是问题所在。如何为新条目分配越来越多的数字，例如：
This is Entry Number: First Entry - and the @GeneratedValue Number is: 0
This is Entry Number: Second Entry - and the @GeneratedValue Number is: 1
This is Entry Number: Third Entry - and the @GeneratedValue Number is: 2
This is Entry Number: Fourth Entry - and the @GeneratedValue Number is: 3
如果@GeneratedValue 正确递增，我应该得到上面的输出，但我得到的是这个：
This is Entry Number: First Entry - and the @GeneratedValue Number is: 0
This is Entry Number: Second Entry - and the @GeneratedValue Number is: 0
This is Entry Number: Third Entry - and the @GeneratedValue Number is: 0
This is Entry Number: Fourth Entry - and the @GeneratedValue Number is: 0
所有项目的 @GeneratedValue 为 0。
执行数据库条目的相关类如下所示：
public class PersistNewBeautifulKiwi
public void doKiwi(String kiwi)
NewBeautifulKiwi newBeautifulKiwi = new NewBeautifulKiwi();
newBeautifulKiwi.setKiwi(kiwi);
HibernateUtil.getSessionFactory();
System.out.println("\n" + "This is Entry Number: " + newBeautifulKiwi.getKiwi() + " - and the @GeneratedValue Number is: " + newBeautifulKiwi.getKiwiId());
【问题讨论】：
你得到的错误是什么？ 嘿@VinayVeluri。请看更新部分！！！！我刚刚意识到所有新条目的 @GeneratedValue 都为 0。 【参考方案1】：为上述指定generator
@Id
@GeneratedValue(strategy=SEQUENCE, generator="CUST_SEQ")
@Column(name="CUST_ID")
public Long getId() return id;
Example 2:
@Id
@GeneratedValue(strategy=TABLE, generator="CUST_GEN")
@Column(name="CUST_ID")
Long id;
这里有很好的解释：Hibernate: rundown on how @GeneratedValue works
【讨论】：
我按照您的建议进行了尝试，但现在运行项目时出现此错误：注意：Hibernate JPA 2 Static-Metamodel Generator 1.1.1.Final warning: Supported source version 'RELEASE_6' from注释处理器 'org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor' 小于 -source '1.7' 1 个警告【参考方案2】：在你的 POJO 类上，试试这个：
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
而不是这个：
@Id
@GeneratedValue
【讨论】：
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