javemail.java

Email的应用。

/*
	A basic extension of the java.applet.Applet class
 */

import java.awt.*;
import java.applet.*;
import java.net.*;
import java.io.*;

public class Email extends Applet
{
	public void init()
	{
		// Take out this line if you don't use symantec.itools.net.RelativeURL or symantec.itools.awt.util.StatusScroller
		symantec.itools.lang.Context.setApplet(this);

		// This code is automatically generated by Visual Cafe when you add
		// components to the visual environment. It instantiates and initializes
		// the components. To modify the code, only use code syntax that matches
		// what Visual Cafe can generate, or Visual Cafe may be unable to back
		// parse your Java file into its visual environment.
		//{{INIT_CONTROLS
		setLayout(null);
		setSize(560,477);
		label1 = new java.awt.Label("MailTo:");
		label1.setBounds(60,48,48,24);
		add(label1);
		txtMailTo = new java.awt.TextField();
		txtMailTo.setBounds(108,48,300,24);
		add(txtMailTo);
		label2 = new java.awt.Label("RcvFrom");
		label2.setBounds(48,72,48,24);
		add(label2);
		txtRcvFrom = new java.awt.TextField();
		txtRcvFrom.setBounds(108,72,300,24);
		add(txtRcvFrom);
		label3 = new java.awt.Label("Subject:");
		label3.setBounds(48,96,48,24);
		add(label3);
		textField1 = new java.awt.TextField();
		textField1.setBounds(108,96,300,24);
		add(textField1);
		label4 = new java.awt.Label("CC");
		label4.setBounds(60,120,36,24);
		add(label4);
		txtCC = new java.awt.TextField();
		txtCC.setBounds(108,120,300,21);
		add(txtCC);
		Body = new java.awt.TextArea();
		Body.setBounds(60,168,400,121);
		add(Body);
		Reply = new java.awt.TextArea();
		Reply.setBounds(60,312,404,132);
		add(Reply);
		cmdSend = new java.awt.Button();
		cmdSend.setActionCommand("button");
		cmdSend.setLabel("Send");
		cmdSend.setBounds(444,96,83,29);
		cmdSend.setBackground(new Color(12632256));
		add(cmdSend);
		//}}
		
		Action lAction = new Action();
	    cmdSend.addActionListener(lAction);
	}

	//{{DECLARE_CONTROLS
	java.awt.Label label1;
	java.awt.TextField txtMailTo;
	java.awt.Label label2;
	java.awt.TextField txtRcvFrom;
	java.awt.Label label3;
	java.awt.TextField textField1;
	java.awt.Label label4;
	java.awt.TextField txtCC;
	java.awt.TextArea Body;
	java.awt.TextArea Reply;
	java.awt.Button cmdSend;
	//}}
	
	public void sendMessage(java.awt.event.ActionEvent evt)
    {
        String sHostName = "gatekeeper.ncic.ac.cn";
        int nPort = 25;
        try {
            Socket sktMail = new Socket(sHostName,nPort);
            PrintStream ps = new PrintStream(sktMail.getOutputStream());
            ps.println("HELO " + sHostName);
            Reply.appendText(getReply(sktMail) + "\n");
            ps.println("MAIL FROM: " + txtRcvFrom.getText());
            Reply.appendText(getReply(sktMail) + "\n");
            ps.println("RCPT TO: " + txtMailTo.getText());
            Reply.appendText(getReply(sktMail) + "\n");
            ps.println("DATA");
            Reply.appendText(getReply(sktMail) + "\n");
            ps.println("From: " + "刘真人" + "\n" + "Subject: " + textField1.getText() +"\n" +
            "CC: " + txtCC.getText() +"\n" + Body.getText() +"\n" + "." + "\n");
            Reply.appendText(getReply(sktMail) + "\n");
            ps.println("QUIT");
            Reply.appendText(getReply(sktMail));
            ps.close();
            sktMail.close();
        } catch (IOException e) {
            System.out.println("Error");
        }
    }

    String getReply(Socket sktMail)
    {
        try {
            DataInputStream disReply = new java.io.DataInputStream(sktMail.getInputStream());

            return disReply.readLine();
        } catch (IOException e) {
            return e.getMessage();
        }
    }


    class Action implements java.awt.event.ActionListener
    {
        public void actionPerformed(java.awt.event.ActionEvent event)
        {
            Object object = event.getSource();
            if (object ==  cmdSend) {
                sendMessage(event);
            }
        }
    }
}