代码:
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 javax.mail.internet.MimeUtility; import org.apache.commons.lang3.StringUtils; public class EmailUtil { /** * 发送邮件 * @param to 接收邮件邮箱号 * @param cc 抄送邮件邮箱号 * @param subject 邮件标题 * @param content 邮件内容 * @return */ public boolean sendEmail(String to, String cc, String subject, String content) { if (StringUtils.isEmpty(to)) { return false; } EmailConfig config = createEmailConfig(to, cc); try { return send(config, subject, content); } catch (Exception e) { e.printStackTrace(); return false; } } private static EmailConfig createEmailConfig(String to, String cc) { EmailConfig config = new EmailConfig(); config.setHost("发送邮件服务器"); config.setPort("服务器发送端口"); config.setEmail("系统使用邮箱号"); config.setUserName("系统发送邮件用户名"); config.setPassword("系统发送邮件所用邮箱密码"); config.setToEmails("接收邮件邮箱号"); config.setCcEmails("抄送邮件邮箱号"); return config; } private static boolean send(EmailConfig config, String subject, String content) { Session session = EmailUtil.creatSession(config); try { MimeMessage message = new MimeMessage(session); // 设置邮件头及编码格式 subject = MimeUtility.encodeWord(subject, "UTF-8", "Q"); message.setSubject(subject); // 邮件署名 message.setFrom(new InternetAddress(config.getEmail(), config.getUserName())); // 消息接收者(收件地址) if (StringUtils.isNotBlank(config.getToEmails())) { String[] emails = config.getToEmails().split(","); InternetAddress[] addresses = new InternetAddress[emails.length]; for (int i = 0; i < emails.length; i++) { addresses[i] = new InternetAddress(emails[i]); } message.addRecipients(Message.RecipientType.TO, addresses); } // 消息抄送者(收件地址) if (StringUtils.isNotBlank(config.getCcEmails())) { String[] emails = config.getCcEmails().split(","); InternetAddress[] addresses = new InternetAddress[emails.length]; for (int i = 0; i < emails.length; i++) { addresses[i] = new InternetAddress(emails[i]); } message.addRecipients(Message.RecipientType.CC, addresses); } message.saveChanges(); // 设置邮件内容及编码格式 // 后一个参数可以不指定编码,如"text/plain",但是将不能显示中文字符 message.setContent(content, "text/plain;charset=UTF-8"); // 发送 Transport.send(message); } catch (Exception e) { e.printStackTrace(); return false; } return true; } private static Session creatSession(EmailConfig config) { Properties props = new Properties(); props.setProperty("mail.transport.protocol", "SMTP"); props.setProperty("mail.smtp.host", config.getHost()); props.setProperty("mail.smtp.port", config.getPort()); props.setProperty("mail.smtp.auth", "true"); props.setProperty("mail.smtp.ssl.enable", "true"); props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); props.setProperty("mail.smtp.socketFactory.fallback", "false"); props.setProperty("mail.smtp.socketFactory.port", config.getPort()); props.setProperty("mail.smtp.connectiontimeout", "5000"); Session session = Session.getInstance(props, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { // 登录用户名密码 return new PasswordAuthentication(config.getEmail(), config.getPassword()); } }); // session.setDebug(true); return session; } }