java实现基于SMTP发送邮件的方法

 import java.util.Date; import java.util.Properties; import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import org.apache.log4j.Logger; public class MailUtil { private static Logger logger = Logger.getLogger(MailUtil.class); /** * 发送邮件 * * @param smtp *   SMTP服务器 * @param user *   用户名 * @param password *   密码 * @param subject *   标题 * @param content *   邮件内容 * @param from *   发件人邮箱 * @param to *   收件人邮箱 */ public static void send(String smtp, final String user, final String password, String subject, String content, String from, String to) { try { Properties props = new Properties(); props.put("mail.smtp.host", smtp); props.put("mail.smtp.auth", "true"); Session ssn = Session.getInstance(props, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(user, password); } }); MimeMessage message = new MimeMessage(ssn); //由邮件会话新建一个消息对象 InternetAddress fromAddress = new InternetAddress(from); //发件人的邮件地址 message.setFrom(fromAddress); //设置发件人 InternetAddress toAddress = new InternetAddress(to); //收件人的邮件地址 message.addRecipient(Message.RecipientType.TO, toAddress); //设置收件人 message.setSubject(subject); //设置标题 message.setText(content); //设置内容 message.setSentDate(new Date()); //设置发信时间 Transport transport = ssn.getTransport("smtp"); transport.connect(smtp, user, password); transport.sendMessage(message, message .getRecipients(Message.RecipientType.TO)); // transport.send(message); transport.close(); logger.info("邮件发送成功"); } catch (Exception e) { logger.warn("邮件发送失败", e); } } }