I expect to show weightLabel, heightLabel when click the botton1 in
EJBClientApplet,but not,why?
I hope "pushEJB" push weight and height data to applet and show them...
/***** DeviceDataListener ******/
import com.thtf.ezone.ibsserver.bean.IDeviceDataBean;
import java.rmi.*;
public interface DeviceDataListener extends Remote
{
void onData( IDeviceDataBean bean ) throws RemoteException;
}
/***** PushEJBBean ******/
public class PushEJBBean extends Observable implements SessionBean {
IDeviceDataBean deviceData;
//
private ArrayList listeners = new ArrayList();
public void setDeviceData(IDeviceDataBean deviceData) {
this.deviceData = deviceData;
//notify all listener
DeviceDataListener listener = null;
try {
for (Iterator iter = listeners.iterator(); iter.hasNext(); ) {
listener = (DeviceDataListener) iter.next();
listener.onData(deviceData);
}
} catch ( Exception ex) {
ex.printStackTrace();
}
}
public void registerListener(DeviceDataListener listener) {
listeners.add( listener );
}
......//other code
}
/***** IDeviceDataBean ******/
public interface IDeviceDataBean extends Serializable
{
public void setHeight(String height);
public void setWeight(String weight);
public String getHeight();
public String getWeight();
}
/***** EJBClientApplet ******/
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import com.borland.jbcl.layout.*;
//
import IDeviceDataBean;
import DeviceDataBean;
import java.rmi.*;
import javax.ejb.*;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import javax.naming.Context;
import javax.rmi.PortableRemoteObject;
import java.util.Hashtable;
import javax.naming.InitialContext;
public class EJBClientApplet extends Applet implements java.io.Serializable,
java.rmi.Remote,com.thtf.ezone.ibsserver.DeviceDataListener
{
boolean isStandalone = true;
BorderLayout borderLayout1 = new BorderLayout();
String h;
String w;
XYLayout xYLayout1 = new XYLayout();
TextField weightText = new TextField();
TextField heightText = new TextField();
Button button1 = new Button();
Button button2 = new Button();
Label label1 = new Label();
Label label2 = new Label();
Label weightLabel = new Label();
Label heightLabel = new Label();
Label label3 = new Label();
Label label4 = new Label();
private PushEJB pushEJB = null;
//Get a parameter value
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
}
//Construct the applet
public EJBClientApplet() {
//init ejb reference
try {
pushEJB = ((PushEJBHome)initializeEJBHome( "PushEJB",
PushEJBHome.class)).create();
System.err.println("pushEJB :: " + pushEJB );
} catch (RemoteException ex) {
ex.printStackTrace();
} catch (CreateException ex) {
ex.printStackTrace();
}
}
//Initialize the applet
public void init() {
//register me as listener
try {
pushEJB.registerListener( this );
pushEJB.registerObserver( this );
System.err.println("register me OK!!");
} catch (RemoteException ex) {
ex.printStackTrace();
}
//generator by jb
try {
h = this.getParameter("height", "");
} catch (Exception e) {
e.printStackTrace();
}
try {
w = this.getParameter("weight", "");
} catch (Exception e) {
e.printStackTrace();
}
try {
jbInit();
} catch (Exception e) {
e.printStackTrace();
}
}
//Component initialization
private void jbInit() throws Exception {
this.setLayout(xYLayout1);
weightText.setText("0");
heightText.setText("0");
button1.setFont(new java.awt.Font("Dialog", Font.PLAIN, 12));
button1.setLabel("????");
button1.addActionListener(new
EJBClientApplet_button1_actionAdapter(this));
button2.setFont(new java.awt.Font("Dialog", Font.PLAIN, 12));
button2.setLabel("??");
button2.addActionListener(new
EJBClientApplet_button2_actionAdapter(this));
label1.setFont(new java.awt.Font("Dialog", Font.PLAIN, 12));
label1.setText("?????");
label2.setFont(new java.awt.Font("Dialog", Font.PLAIN, 12));
label2.setText("?????");
label3.setFont(new java.awt.Font("Dialog", Font.PLAIN, 12));
label3.setText("???");
label4.setFont(new java.awt.Font("Dialog", Font.PLAIN, 12));
label4.setText("???");
this.add(button1, new XYConstraints(268, 68, -1, -1));
this.add(button2, new XYConstraints(268, 88, -1, -1));
this.add(label1, new XYConstraints(56, 37, -1, -1));
this.add(weightText, new XYConstraints(95, 70, 58, -1));
this.add(label2, new XYConstraints(58, 159, -1, -1));
this.add(heightText, new XYConstraints(187, 69, 56, -1));
this.add(weightLabel, new XYConstraints(167, 185, -1, -1));
this.add(heightLabel, new XYConstraints(167, 219, -1, -1));
this.add(label3, new XYConstraints(124, 185, -1, -1));
this.add(label4, new XYConstraints(122, 217, -1, -1));
//
weightLabel.setText( "0000" );
heightLabel.setText( "0000" );
}
//Get Applet information
public String getAppletInfo() {
return "Applet Information";
}
//Get parameter info
public String[][] getParameterInfo() {
java.lang.String[][] pinfo = { {"height", "String", ""}, {"weight",
"String", ""},
};
return pinfo;
}
/**
* display device data
* @param bean DeviceDataBean
*/
public void onData( IDeviceDataBean bean ) throws RemoteException
{
System.out.println( "height:: " + bean.getHeight() );
System.out.println( "weight:: " + bean.getWeight() );
weightLabel.setText( ""+bean.getHeight() );
heightLabel.setText( ""+bean.getWeight() );
}
//Main method
public static void main(String[] args)
{
EJBClientApplet applet = new EJBClientApplet();
applet.isStandalone = true;
Frame frame;
frame = new Frame();
frame.setTitle("Applet Frame");
frame.add(applet, BorderLayout.CENTER);
applet.init();
applet.start();
frame.setSize(400, 320);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation((d.width - frame.getSize().width) / 2,
(d.height - frame.getSize().height) / 2);
frame.setVisible(true);
}
public void button1_actionPerformed(ActionEvent actionEvent)
{
DeviceDataBean bean = new DeviceDataBean();
bean.setHeight( heightText.getText() );
bean.setWeight( weightText.getText() );
//put to ejb
try {
pushEJB.setDeviceData(bean);
} catch (RemoteException ex) {
ex.printStackTrace();
}
}
public void button2_actionPerformed(ActionEvent actionEvent)
{
System.exit(0);
}
public EJBHome initializeEJBHome( String jndiName, Class aclass )
{
try {
//get naming context
Context context = getInitialContext();
//look up jndi name
Object ref = context.lookup( jndiName );
//look up jndi name and cast to Home interface
return (EJBHome)PortableRemoteObject.narrow( ref, aclass );
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public Context getInitialContext() throws Exception {
Hashtable environment = new Hashtable();
environment.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
environment.put(Context.URL_PKG_PREFIXES,
"org.jboss.naming:org.jnp.interfaces");
environment.put(Context.PROVIDER_URL, "jnp://localhost:1099");
return new InitialContext(environment);
}
}
class EJBClientApplet_button1_actionAdapter implements ActionListener
{
private EJBClientApplet adaptee;
EJBClientApplet_button1_actionAdapter(EJBClientApplet adaptee)
{
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent actionEvent)
{
adaptee.button1_actionPerformed(actionEvent);
}
}
class EJBClientApplet_button2_actionAdapter implements ActionListener
{
private EJBClientApplet adaptee;
EJBClientApplet_button2_actionAdapter(EJBClientApplet adaptee)
{
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent actionEvent)
{
adaptee.button2_actionPerformed(actionEvent);
}
}
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