如何从jsp页面使用GMail SMTP服务器发送电子邮件？

Question

我试图从 jsp 页面通过 GMail 的 SMTP 服务器发送电子邮件，但没有得到正确的结果

Answer 1

在 JSP 中，当您提交表单时，您需要调用一个 Java 类，在其中编写使用 JavaMail 发送邮件的代码。你可以在这里找到一个例子
http://code.geekinterview.com/java/send -email-using-gmail-mail-server.html：

//set CLASSPATH=%CLASSPATH%;activation.jar;mail.jar
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;

public class Mail
{
         String  d_email = "[email protected]",
            d_password = "****",
            d_host = "smtp.gmail.com",
            d_port  = "465",
            m_to = "[email protected]",
            m_subject = "Testing",
            m_text = "Hey, this is the testing email using smtp.gmail.com.";
    public static void main(String[] args)
    {
                String[] to={"[email protected]"};
                String[] cc={"[email protected]"};
                String[] bcc={"[email protected]"};
                //This is for google
                        Mail.sendMail("[email protected]","password","smtp.gmail.com","465","true",
"true",true,"javax.net.ssl.SSLSocketFactory","false",to,cc,bcc,
"hi baba don't send virus mails..","This is my style...of reply..
If u send virus mails..");             
    }

        public synchronized static boolean sendMail(String userName,String passWord,String host,String port,String starttls,String auth,boolean debug,String socketFactoryClass,String fallback,String[] to,String[] cc,String[] bcc,String subject,String text){
                Properties props = new Properties();
                //Properties props=System.getProperties();
        props.put("mail.smtp.user", userName);
        props.put("mail.smtp.host", host);
                if(!"".equals(port))
        props.put("mail.smtp.port", port);
                if(!"".equals(starttls))
        props.put("mail.smtp.starttls.enable",starttls);
        props.put("mail.smtp.auth", auth);
                if(debug){
                props.put("mail.smtp.debug", "true");
                }else{
                props.put("mail.smtp.debug", "false");         
                }
                if(!"".equals(port))
        props.put("mail.smtp.socketFactory.port", port);
                if(!"".equals(socketFactoryClass))
        props.put("mail.smtp.socketFactory.class",socketFactoryClass);
                if(!"".equals(fallback))
        props.put("mail.smtp.socketFactory.fallback", fallback);

        try
        {
                        Session session = Session.getDefaultInstance(props, null);
            session.setDebug(debug);
            MimeMessage msg = new MimeMessage(session);
            msg.setText(text);
            msg.setSubject(subject);
            msg.setFrom(new InternetAddress("[email protected]"));
                        for(int i=0;i<to.length;i++){
            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to[i]));
                        }
                        for(int i=0;i<cc.length;i++){
            msg.addRecipient(Message.RecipientType.CC, new InternetAddress(cc[i]));
                        }
                        for(int i=0;i<bcc.length;i++){
            msg.addRecipient(Message.RecipientType.BCC, new InternetAddress(bcc[i]));
                        }
            msg.saveChanges();
                        Transport transport = session.getTransport("smtp");
                        transport.connect(host, userName, passWord);
                        transport.sendMessage(msg, msg.getAllRecipients());
                        transport.close();
                        return true;
        }
        catch (Exception mex)
        {
            mex.printStackTrace();
                        return false;
        }
        }

}

Answer 2

您必须使用 Java Mail API。