JavaMail-发送一封简单邮件（附带附件）

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import java.util.Date; import java.util.Properties; import javax.mail.MessagingException; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.AddressException; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMessage.RecipientType; import javax.mail.internet.MimeMultipart; public class JavaMailUtils { //连接SMTP服务器的主机名，这里以qq邮箱为例 private static final String SMTP_HOST = "smtp.qq.com"; //连接的端口号，587为ssl端口，默认为25端口 private static final String SMTP_PORT = "587"; //发件人 private static final String MAIL_FROM = "XXX@qq.com"; //连接邮件服务器的用户名（邮箱地址去除了@qq.com的部分） private static final String USER = "XXX"; /** * 授权码，就是你在邮件服务器上注册的密码，不是你的qq密码 * 在邮箱里开启smtp/imap服务时需要发送短信，成功后会得到一个授权码 */ private static final String PASSWORD = "授权码"; private JavaMailUtils() { } /** * send mail without attachments * * @param mailTo * @param mailCc * @param subject * @param content * @throws AddressException * @throws MessagingException */ public static void sendMail(final String mailTo, final String mailCc, final String subject, final String content) throws Exception { // get the session final Session session = getSession(); // create a mail final MimeMessage message = createMail(session, mailTo, mailCc, subject, content); // get the transport final Transport transport = session.getTransport(); transport.connect(USER, PASSWORD); transport.sendMessage(message, message.getAllRecipients()); transport.close(); } public static void sendMail(final String mailTo, final String mailCc, final String subject, final String content, final String[] attachments) throws Exception { // get the session final Session session = getSession(); // create a mail final MimeMessage message = createMail(session, mailTo, mailCc, subject, content, attachments); // get the transport final Transport transport = session.getTransport(); transport.connect(USER, PASSWORD); transport.sendMessage(message, message.getAllRecipients()); transport.close(); } /** * create a mail without attachments * * @param session * @param mailTo * @param mailCc * @param subject * @param content * @return * @throws Exception */ private static MimeMessage createMail(final Session session, final String mailTo, final String mailCc, final String subject, final String content) throws Exception { final MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(MAIL_FROM)); message.setRecipients(RecipientType.TO, InternetAddress.parse(mailTo)); message.setRecipients(RecipientType.CC, InternetAddress.parse(mailCc)); message.setSubject(subject); message.setContent(content, "text/html;charset=UTF-8"); message.setSentDate(new Date()); message.saveChanges(); return message; } /** * create a mail with attachments * * @param session * @param mailTo * @param mailCc * @param subject * @param content * @param attachments * @return */ private static MimeMessage createMail(final Session session, final String mailTo, final String mailCc, final String subject, final String content, final String[] attachments) throws Exception { final MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(MAIL_FROM)); message.setRecipients(RecipientType.TO, InternetAddress.parse(mailTo)); message.setRecipients(RecipientType.CC, InternetAddress.parse(mailCc)); message.setSubject(subject); // set the multipart of the mail final MimeMultipart multipart = new MimeMultipart(); // set content part of the mail final MimeBodyPart contentPart = new MimeBodyPart(); contentPart.setContent(content, "text/html;charset=UTF-8"); multipart.addBodyPart(contentPart); // set attachment part of the mail final MimeBodyPart attach1 = new MimeBodyPart(); final MimeBodyPart attach2 = new MimeBodyPart(); if (attachments != null && attachments.length != 0) { final int length = attachments.length; if (length == 1) { attach1.attachFile(attachments[0]); multipart.addBodyPart(attach1); } if (length == 2) { attach1.attachFile(attachments[0]); attach2.attachFile(attachments[1]); multipart.addBodyPart(attach1); multipart.addBodyPart(attach2); } } message.setContent(multipart); message.setSentDate(new Date()); message.saveChanges(); return message; } /** * get the session to transport mails */ private static Session getSession() { // set the properties for connecting the mail server final Properties props = new Properties(); props.setProperty("mail.debug", "true"); props.setProperty("mail.transport.protocol", "smtp"); props.setProperty("mail.host", SMTP_HOST); props.setProperty("mail.smtp.auth", "true"); props.setProperty("mail.smtp.port", SMTP_PORT); // ssl props.setProperty("mail.imap.ssl.enable", "true"); props.setProperty("mail.imap.ssl.socketFactory.class", "DummySSLSocketFactory"); props.setProperty("mail.imap.ssl.socketFactory.fallback", "false"); // create the session final Session session = Session.getDefaultInstance(props); return session; } }

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public class Test { //收件人，多人的话要用英文的","来隔开 private static final String MAIL_TO = "XXX@qq.com"; //抄送人，多人的话要用英文的","来隔开 private static final String MAIL_CC = "XXX@qq.com"; //邮件的主题（因为只是测试用，所以写成静态常量了） private static final String SUBJECT = "It's a test mail"; //邮件的内容（因为只是测试用，所以写成静态常量了） private static final String CONTENT = "Hello World!<br>Bye!"; private static final String FILE_1 = "附件1的路径"; private static final String FILE_2 = "附件2的路径"; public static void main(final String[] args) { final String[] attachments = {}; // final String[] attachments = {FILE_1, FILE_2}; try { // JavaMailUtils.sendMail(MAIL_TO, MAIL_CC, SUBJECT, CONTENT); JavaMailUtils.sendMail(MAIL_TO, MAIL_CC, SUBJECT, CONTENT, attachments); } catch (final Exception e) { e.printStackTrace(); } } }