mailclient.java

Java ME手机应用开发大全一书的配套光盘上的源码

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;
	//声明邮件对象
    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
    {
        
    }

}
//声明邮件发送的线程类
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
        {
			//建立邮件服务器的连接
            httpConn = (HttpConnection)Connector.open("http://localhost:8080/mail/servlet/maildo");
			//设置向服务器提交数据的方式
            httpConn.setRequestMethod("POST");
			//获得连接的输出流
            dos = new DataOutputStream(httpConn.openOutputStream());
			//向服务器发送邮件数据
            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)
        {}
    }}