用J2ME實現簡單電子郵件發送功能(2)

最後我們完成MIDlet，在其中包括聯網的程序代碼，由於本站已經提供了很多關於J2ME聯網的介紹，因此這裡不再進行更多的解釋。

package com.J2MEdev.mail;
import Java.io.DataOutputStream;
import Java.io.IOException;
import Javax.microedition.midlet.MIDlet;
import Javax.microedition.midlet.MIDletStateChangeException;
import Javax.microedition.lcdui.*;
import Javax.microedition.io.*;
public class MailClIEnt extends MIDlet
{
    private MainForm mainForm;
    private ContentForm contentForm;
    private Display display;
    private Message message;
    public Message getMessage()
    {
        return message;
    }
public void setMessage(Message message)
    {
        this.message = message;
    }
public void displayAlert(String text, AlertType type, Displayable disp)
    {
        Alert alert = new Alert("Application Error");
        alert.setString(text);
        alert.setType(type);
        alert.setTimeout(2000);
        display.setCurrent(alert, disp);
    }

    public ContentForm getContentForm()
    {
        return contentForm;
    }
public Display getDisplay()
    {
        return display;
    }

    public MainForm getMainForm()
    {
        return mainForm;
    }
public void initMIDlet()
    {
        MailThread t = new MailThread(this);
        t.start();
        message = new Message();
        display = Display.getDisplay(this);
        mainForm = new MainForm(this, "Simple Mail ClIEnt");
        contentForm = new ContentForm("Content", null, 150, TextFIEld.ANY, this);
        display.setCurrent(mainForm);
    }

    protected void startApp() throws MIDletStateChangeException
    {        
        initMIDlet();
    }
protected void pauseApp()
    {   
    }
protected void destroyApp(boolean arg0) throws MIDletStateChangeException
    {      
    }
}
class MailThread extends Thread
{
    private MailClIEnt midlet;
    public MailThread(MailClIEnt midlet)
    {
        this.midlet = midlet;
    }
public void run()
    {
        synchronized(midlet)
        {
            try
            {
                midlet.wait();
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }
            
        }
        System.out.println("connecting to server.....");
        HttpConnection httpConn = null;
        DataOutputStream DOS = null;
        
        try
        {
            httpConn = (HttpConnection)Connector.open(
"http://localhost:8088/mail/maildo");
            httpConn.setRequestMethod("POST");
            DOS = new DataOutputStream(httpConn.openOutputStream());
            DOS.writeUTF(midlet.getMessage().getTo());
            DOS.writeUTF(midlet.getMessage().getSubject());
            DOS.writeUTF(midlet.getMessage().getContent());
            DOS.close();
            httpConn.close();
            System.out.println("end of sending mail");
        }
        catch(IOException e)
        {}
    }}