catalogtestclient1.java

使用JBulider开发的java实例。非常全。

package cmp2image;

import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class CatalogTestClient1
    extends JFrame {
  private CatalogHome catalogHome = null;
  String name;
  Image flowerImage;
  //Construct the EJB test client
  public CatalogTestClient1(String title) {
    super(title);
    initialize();
  }

  public void initialize() {
    try {
      //get naming context
      Context context = getInitialContext();

      //look up jndi name
      Object ref = context.lookup("Catalog");
      //look up jndi name and cast to Home interface
      catalogHome = (CatalogHome) PortableRemoteObject.narrow(ref, CatalogHome.class);
      Catalog catalog = catalogHome.create();
      ArrayList collection = catalog.findOne("AfricanOrchid");
      Iterator i = collection.iterator();
      Flower flower = null;
      System.out.println("Invento");
      while (i.hasNext()) {
        Object obj = i.next();
        if (obj instanceof String) {
          name = (String) obj;
          System.out.println("flowerName: " + name);
        }
        if (obj instanceof byte[]) {
          byte[] buf = (byte[]) obj;
          Toolkit toolkit = Toolkit.getDefaultToolkit();
          flowerImage = toolkit.createImage(buf);
        }

      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  public void paint(Graphics g) {
    Font ft1 = new Font("TimesRoman", Font.BOLD, 25);
    g.setFont(ft1);
    String str = "The Flower Name:  " + name;
    g.drawString(str, 50, 50);
    g.drawImage(flowerImage, 70, 80, this);
  }

  private Context getInitialContext() throws Exception {
    String url = "t3://zhb:7001";
    String user = null;
    String password = null;
    Properties properties = null;
    try {
      properties = new Properties();
      properties.put(Context.INITIAL_CONTEXT_FACTORY,
                     "weblogic.jndi.WLInitialContextFactory");
      properties.put(Context.PROVIDER_URL, url);
      if (user != null) {
        properties.put(Context.SECURITY_PRINCIPAL, user);
        properties.put(Context.SECURITY_CREDENTIALS,
                       password == null ? "" : password);
      }

      return new InitialContext(properties);
    }
    catch (Exception e) {
      System.out.println("Unable to connect to WebLogic server at " + url);
      System.out.println("Please make sure that the server is running.");
      throw e;
    }
  }

  //----------------------------------------------------------------------------
  // Utility Methods
  //----------------------------------------------------------------------------

  public CatalogHome getHome() {
    return catalogHome;
  }

  //Main method

  public static void main(String[] args) {
    CatalogTestClient1 win1 = new CatalogTestClient1("CatalogTestClient1");
    win1.setSize(400, 400);
    win1.setVisible(true);
    win1.addWindowListener(new WindowClose());
  }
}

class WindowClose
    extends WindowAdapter {
  public void windowClosing(WindowEvent e) {
    System.exit(0);
  }
}