Question

嗨我正在使用netbeans + glassfish 我正在尝试运行此代码：我只创建没有任何表的数据库（通过运行此代码我想创建表并保留我的对象）

import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;

public class Casino extends JFrame implements ActionListener {

    private JButton start, settings, scenario, music;


    /**
     * Constructor method
     */

    public Casino(){

        JPanel mainUI, startUI, settingsUI, scenarioUI, blackjackUI, oddorevenUI, tcmUI, overorunderUI, slotsUI;
        JPanel menus = new JPanel(new CardLayout());


        CardLayout GUI = (CardLayout) menus.getLayout();
        mainUI = new JPanel();
        getContentPane().add(mainUI);
        mainUI.setBackground(new Color(53, 9, 9));

        //Background items
        JLabel title = new JLabel(new ImageIcon("title.png"));
        title.setBounds(0,-280,780,700);
        mainUI.add(title);

        JLabel border = new JLabel(new ImageIcon("mainscreenborder.png"));
        border.setBounds(0, 180, 780, 700);
        mainUI.add(border);

        //Main menu buttons
        settings = new JButton();
        ImageIcon s = new ImageIcon("settings-button.png");
        settings.setBounds(320, 200, 122, 63);
        settings.setIcon(s);
        mainUI.add(settings);

        music = new JButton();
        ImageIcon m = new ImageIcon("music-button.png");
        music.setBounds(320, 268, 122, 63);
        music.setBackground(new Color(53, 9, 9));
        music.setIcon(m);
        mainUI.add(music);

        scenario = new JButton();
        ImageIcon sc = new ImageIcon("scenario-button.png");
        scenario.setBounds(320, 336, 122, 63);
        scenario.setBackground(new Color(53, 9, 9));
        scenario.setIcon(sc);
        mainUI.add(scenario);

        start = new JButton();
        ImageIcon st = new ImageIcon("start-button.png");
        start.setBounds(320, 404, 122, 63);
        start.setBackground(new Color(53, 9, 9));
        start.setIcon(st);
        mainUI.add(start);


        menus.add(mainUI, "Main Menu");

        GUI.show(menus, "Main Menu");




        setSize(780, 700);
        setResizable(false);
        setLayout(GUI);
        setTitle("White Lily Casino");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e){

    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Casino wlc = new Casino();

    }
}

但我收到了这个错误：

public static void main(String[] args) {
    SmartphoneService ss = new SmartphoneService();
    Smartphone smart = new Smartphone(0, 0, null, null, null);
    ss.create(smart);
}

我的persistence.xml：

Unable to lookup JNDI name

我的智能手机服务：

 <persistence-unit name="manager1" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:comp/env/jdbc/mysql</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
  <property name="javax.persistence.schema-generation.database.action" value="create"/>
</properties>

我检查了连接池ping（Ping成功）

感谢您的帮助

Answer 1

您正在混淆JavaSE和JavaEE环境。

您的数据源看起来像是在Glassfish（Java EE环境）上配置的。因此，JNDI名称java:comp/env/jdbc/mysql仅在Java EE上下文中可用。

您的SmartphoneService正在Java SE上下文中运行（通过public static void main()方法。当您尝试查找java:comp/env/jdbc/mysql时，它不会是因为DataSource只存在于Glassfish（Java EE）环境中。

您需要从注册资源的相同上下文中执行JNDI查找。我的建议是让您的SmartphoneService代码在Glassfish上运行。有很多方法可以驱动它 - EJB，Servlet等......

无法查找JNDI名称

1 个答案: