摘要： JavaMail发送基本邮件ATA上有的是，但这次有个需求提出要实现会议邮件，呃，习惯性看有没有同学已经实现了，居然少之又少，不知道是不是有其他团队有这种需求，目测也不多哈哈，实现了这个功能感觉还挺有意思的，分享给大家交流交流。（可能有些理解不对，请大家指出，谢谢） 前期真的是比较懵圈，虽然一开始已经有实现了普通邮件发送，是通过Spring提供的*MimeMessageHelper*这个组件
// 注入bean必备
private final static String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
@Autowired
private JavaMailSender mailSender;
@Resource
private VelocityEngine velocityEngine;
// 请根据你们自己的需要或申请配置
@Value("${spring.mail.username}")
private String fromMailAddress_preview;
@Value("${spring.mail.host}")
private String mailHost;
@Value("${spring.mail.username}")
private String mailUsername;
@Value("${spring.mail.password}")
private String mailPassword;
@Value("${spring.mail.port}")
private String mailPort;
@Value("${spring.mail.properties.mail.smtp.socketFactory.port}")
private String mailSmtpSocketFactoryPort;
@Value("${spring.mail.properties.mail.smtp.auth}")
private String mailSmtpAuth;
/**
* 发送会议邀请邮件
*
* @param toMailAddress 收件人（邀约人），支持多个
* @param mailSubject 邮件主题
* @param mailContent 邮件内容（建议传入velocity去构建生成的HTML内容）
* @param summary 摘要，即日历（日程）上显示的标题
* @param startTimestamp 会议开始时间
* @param endTimestamp 会议结束时间
* @param locationContent 会议位置
* @return 发送结果
*/
public Boolean sendMeetingMailTemplate(String[] toMailAddressArray, String mailSubject, String mailContent,
String summary, Long startTimestamp, Long endTimestamp,
String locationContent) {
if (toMailAddressArray == null || toMailAddressArray.length <= 0 || StringUtils.isEmpty(fromMailAddress_preview)
|| StringUtils.isEmpty(mailSubject) || StringUtils.isEmpty(mailContent) || StringUtils.isEmpty(summary)) {
return false;
}
boolean sendStatus = false;
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
Properties prop = new Properties();
prop.put("mail.smtp.host", mailHost);
prop.put("mail.smtp.auth", mailSmtpAuth);
prop.put("mail.smtp.port", mailPort);
prop.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
prop.setProperty("mail.smtp.socketFactory.fallback", "false");
prop.setProperty("mail.smtp.socketFactory.port", mailSmtpSocketFactoryPort);
MailAuthenticator authenticator = new MailAuthenticator(mailUsername, mailPassword);
Session session = Session.getDefaultInstance(prop, authenticator);
MimeMessage message = new MimeMessage(session);
try {
message.addHeaderLine("method=REQUEST");
message.addHeaderLine("charset=UTF-8");
message.addHeaderLine("component=VEVENT");
message.setFrom(new InternetAddress(fromMailAddress_preview));
InternetAddress[] addressArray = new InternetAddress[toMailAddressArray.length];
for (int i = 0; i < toMailAddressArray.length; i++) {
addressArray = new InternetAddress(toMailAddressArray);
}
message.addRecipients(Message.RecipientType.TO, addressArray);
message.setSubject(mailSubject);
} catch (MessagingException e) {
e.printStackTrace();
}
// 会议内容核心拼装
BodyPart meetingBodyPart = new MimeBodyPart();
try {
meetingBodyPart.setHeader("Content-Class", "urn:content- classes:calendarmessage");
meetingBodyPart.setHeader("Content-ID", "calendar_message");
meetingBodyPart.setDataHandler(new DataHandler(new ByteArrayDataSource(
buildCalendar(summary, startTimestamp, endTimestamp, locationContent, toMailAddressArray).toString(),
"text/calendar")));
} catch (IOException | MessagingException e) {
e.printStackTrace();
}
// 邮件原文组合+发送
Multipart multipart = new MimeMultipart();
try {
multipart.addBodyPart(meetingBodyPart);
BodyPart contentBodyPart = new MimeBodyPart();
// 普通文件赋值
//contentBodyPart.setText(mailContent);
/* HTML内容赋值
Map<String, Object> model = new HashMap<>();
model.put("sscontent", "test测试师善");
VelocityContext velocityContext = new VelocityContext();
model.put("sscontent", model.get("sscontent"));
String text = VelocityEngineUtils.mergeTemplateIntoString(velocityEngine, "/mail/test.vm", "UTF-8",
model);*/
contentBodyPart.setContent(mailContent, "text/html; charset=utf-8");
multipart.addBodyPart(contentBodyPart);
message.setContent(multipart);
Transport.send(message);
sendStatus = true;
} catch (MessagingException e) {
e.printStackTrace();
}
return sendStatus;
}
/**
* 构建会议邀约日历对象
*
* @param summary 摘要，会议邮件显示在日历插件上的标题
* @param startTimestamp 会议开始时间，GMT+8
* @param endTimestamp 会议结束时间，GMT+8
* @param LocationContent 会议位置
* @param toMailAddressArray 邀约人
* @return
*/
public Calendar buildCalendar(String summary, Long startTimestamp, Long endTimestamp, String LocationContent, String[] toMailAddressArray) {
TimeZoneRegistry registry = TimeZoneRegistryFactory.getInstance().createRegistry();
TimeZone timezone = registry.getTimeZone("Asia/Shanghai");
VTimeZone tz = timezone.getVTimeZone();
// 创建日历
Calendar calendar = new Calendar();
calendar.getProperties().add(new ProdId("-//Ben Fortuna//iCal4j 1.0//EN"));
calendar.getProperties().add(Version.VERSION_2_0);
calendar.getProperties().add(CalScale.GREGORIAN);
// ⭐️下面这行很关键，缺少的话钉钉IOS邮箱会显示1970--01-01 08:00
calendar.getProperties().add(Method.REQUEST);
DateTime start = new DateTime(startTimestamp);
start.setTimeZone(timezone);
DateTime end = new DateTime(endTimestamp);
end.setTimeZone(timezone);
VEvent event = new VEvent(start, end, summary);
event.getProperties().add(new Location(LocationContent));
try {
// 生成唯一标示
event.getProperties().add(new Uid(new UidGenerator("iCal4j").generateUid().getValue()));
// 添加时区信息
event.getProperties().add(tz.getTimeZoneId());
// 组织者
event.getProperties().add(new Organizer("mailto:preview@alibaba-inc.com"));
} catch (SocketException | URISyntaxException e) {
e.printStackTrace();
}
// 添加邀请者
for (int i = 0; i < toMailAddressArray.length; i++) {
Attendee dev = new Attendee(URI.create("mailto:" + toMailAddressArray));
dev.getParameters().add(Role.REQ_PARTICIPANT);
dev.getParameters().add(new Cn("Developer " + (i + 1)));
event.getProperties().add(dev);
}
/*
// 重复事件
Recur recur = new Recur(Recur.WEEKLY, Integer.MAX_VALUE);
recur.getDayList().add(WeekDay.MO);
recur.getDayList().add(WeekDay.TU);
recur.getDayList().add(WeekDay.WE);
recur.getDayList().add(WeekDay.TH);
recur.getDayList().add(WeekDay.FR);
RRule rule = new RRule(recur);
event.getProperties().add(rule);
*/
// 提醒,提前10分钟
VAlarm valarm = new VAlarm(new Dur(0, 0, -10, 0));
valarm.getProperties().add(new Summary("事件提醒"));
valarm.getProperties().add(Action.DISPLAY);
valarm.getProperties().add(new Description("会议提醒描述，待定，不确定使用方式"));
// 将VAlarm加入VEvent
event.getAlarms().add(valarm);
// 添加事件
calendar.getComponents().add(event);
// 验证
try {
calendar.validate();
} catch (ValidationException e) {
e.printStackTrace();
}
return calendar;
}
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