本地测试通过，不能向外发邮件，请教有关验证问题？有人可以告诉我如何加入验证代码吗 ？如何写？
---MIDlet---
package com;
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:8888/Maile/MaileServlet ");
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)
{}
}
}
-----------servlet--------------
package com;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.Properties;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;