Java编写QQ邮件发送程序

 

import java.net.*;
import java.io.*;
import sun.misc.resources.*;

public class MailClientDemo02 {

    /**
     * @param args
     * @throws IOException
     * @throws UnknownHostException
     */
    public static void main(String[] args) throws UnknownHostException, IOException {
        // TODO Auto-generated method stub

        Socket client=null;

        client=new Socket("smtp.qq.com",25);

        BufferedReader buf=null;

        PrintStream out=null;

        out=new PrintStream(client.getOutputStream());

        buf=new BufferedReader(new InputStreamReader(client.getInputStream()));

        String helo="HELO localhost";

        String auth="AUTH LOGIN";

        String username=new sun.misc.BASE64Encoder().encode("[email protected]".getBytes());

        String password=new sun.misc.BASE64Encoder().encode("××××××××××".getBytes());



        //System.out.println(username+"\t"+password);

        String mailFrom="MAIL FROM:[email protected]";

        String rcpt="RCPT TO:[email protected]";

        String data="DATA";

        String subject="Subject:hi,java";

        String from="From:[email protected]";

        String to="To:[email protected]";

        String contxt01="this is a java client";

        String contxt02="this progrom is writed by qinlouke";

        String contxt03="thanks";

        String end=".";

        String quit="QUIT";

        out.println(helo);

        System.out.println("服务器响应："+buf.readLine());

        out.println(auth);

        System.out.println("服务器响应："+buf.readLine());

        out.println(username);

        System.out.println("服务器响应："+buf.readLine());

        out.println(password);

        System.out.println("服务器响应："+buf.readLine());

        out.println(mailFrom);

        System.out.println("服务器响应："+buf.readLine());

        out.println(rcpt);

        System.out.println("服务器响应："+buf.readLine());

        out.println(data);

        System.out.println("服务器响应："+buf.readLine());

        out.println(subject);

        out.println(from);

        out.println(to);

        out.println("");

        out.println("");

        out.println("");

        out.println(contxt01);

        out.println(contxt02);

        out.println(contxt03);

        out.println(end);

        System.out.println("服务器响应："+buf.readLine());

        out.println(quit);

        System.out.println("服务器响应："+buf.readLine());

        client.close();

        buf.close();

    }

}