程序实现发送邮件

需要提前注册两个邮箱才能实验，代码是参考方立勋javaweb教程写的

//发邮件首先连上服务器
        Socket socket = new Socket("smtp.sohu.com",25);
        OutputStream out = socket.getOutputStream();//向服务器写数据
        
        BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        System.out.println(in.readLine());
        out.write("ehlo flx
".getBytes());
        System.out.println(in.readLine());
        System.out.println(in.readLine());
        System.out.println(in.readLine());
        out.write("auto login
".getBytes());
        System.out.println(in.readLine());
        out.write("axxxx".getBytes());
        System.out.println(in.readLine());
        out.write("afewaxxx".getBytes());
        System.out.println(in.readLine());
        
        out.write("mail from:<itcast1111@sohu.com>
".getBytes());
        System.out.println(in.readLine());
        
        out.write("mail to:<itcast1111@sina.com>
".getBytes());
        System.out.println(in.readLine());
        out.write("data
".getBytes());
        out.write("fawefawefawefawefawef
".getBytes());
        out.write(".
".getBytes());
        System.out.println(in.readLine());
        out.write("quit".getBytes());