如何使用 Java Mail 发送 iCal 会议请求并接收响应
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时间：2020-08-12 00:01:51 来源:igfitidea点击:
How to send an iCal meeting request using Java Mail, and receive the response
提问by Amr Gawish
I'm trying to send an iCal to an outlook, using Java Mail Library, I've read already the Question, and I already have some sample code
我正在尝试使用 Java 邮件库将 iCal 发送到 Outlook，我已经阅读了问题，并且已经有了一些示例代码
public class SendMeetingRequest {
String host = "" ;
String port = "" ;
String sender = "" ;
public static SimpleDateFormat dateFormat = new SimpleDateFormat( "yyyyMMdd'T'HHmm'00'" ) ;
public static SimpleDateFormat dateParser = new SimpleDateFormat( "dd-MM-yyyy HH:mm" ) ;
public static void main(String[] args) throws Exception {
SendMeetingRequest sender = new SendMeetingRequest() ;
sender.sendInvitation( “LogicaCMG Inschrijf Site”
, new String[] { “robert<dot>willems<dot>of<dot>brilman<at>logicacmg<dot>com”
}
, “Outlook Meeting Request Using JavaMail”
, dateParser.parse( “28-08-2006 18:00″ )
, dateParser.parse( “28-08-2006 21:00″ )
, “LIS-42″
, “Bar op scheveningen”
, “<font color=\”Red\”>Aanwezigheid verplicht!</font><br>We gaan lekker een biertje drinken met z'n allen.”
) ;
}
void sendInvitation( String organizer
, String[] to
, String subject
, Date start
, Date end
, String invitationId
, String location
, String description
) throws Exception {
try {
Properties prop = new Properties();
prop.put(”mail.smtp.port”, port );
prop.put(”mail.smtp.host”, host );
Session session = Session.getDefaultInstance(prop);
session.setDebug(true);
// Define message
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(sender));
// Set TO
if( to != null && ( to.length > 0 ) ) {
InternetAddress[] address = new InternetAddress[ to.length ] ;
for( int i = 0; i < to.length; i++ ) {
address[ i ] = new InternetAddress( to[ i ] ) ;
}
message.setRecipients( Message.RecipientType.TO, address ) ;
}
// Set subject
message.setSubject(subject);
// Create iCalendar message
StringBuffer messageText = new StringBuffer();
messageText.append("BEGIN:VCALENDAR\n" +
"PRODID:-//Microsoft Corporation//Outlook 9.0 MIMEDIR//EN\n" +
"VERSION:2.0\n" +
"METHOD:REQUEST\n" +
"BEGIN:VEVENT\n" +
"ORGANIZER:MAILTO:" ) ;
messageText.append( organizer ) ;
messageText.append( "\n" +
"DTSTART:");
messageText.append( dateFormat.format( start ) ) ;
messageText.append( "\n" +
"DTEND:" ) ;
messageText.append( dateFormat.format( end ) ) ;
messageText.append( "\n" +
"LOCATION:" ) ;
messageText.append( location ) ;
messageText.append( "\n" +
"UID:" ) ;
messageText.append( invitationId ) ;
messageText.append( "\n" +
"DTSTAMP:" ) ;
messageText.append( dateFormat.format( new java.util.Date() ) ) ;
messageText.append( "\n" +
"DESCRIPTION;ALTREP=\"CID:<eventDescriptionHTML>\”" ) ;
messageText.append( “\n” +
”BEGIN:VALARM\n” +
”TRIGGER:-PT15M\n” +
”ACTION:DISPLAY\n” +
”DESCRIPTION:Reminder\n” +
”END:VALARM\n” +
”END:VEVENT\n” +
”END:VCALENDAR”
) ;
Multipart mp = new MimeMultipart();
MimeBodyPart meetingPart = new MimeBodyPart() ;
meetingPart.setDataHandler( new DataHandler( new StringDataSource( messageText.toString(), “text/calendar”, “meetingRequest” ) ) ) ;
mp.addBodyPart( meetingPart ) ;
MimeBodyPart descriptionPart = new MimeBodyPart() ;
descriptionPart.setDataHandler( new DataHandler( new StringDataSource( description, “text/html”, “eventDescription” ) ) ) ;
descriptionPart.setContentID( “<eventDescriptionHTML>” ) ;
mp.addBodyPart( descriptionPart ) ;
message.setContent( mp ) ;
// send message
Transport.send(message);
} catch (MessagingException me) {
me.printStackTrace();
} catch (Exception ex) {
ex.printStackTrace();
}
}
private static class StringDataSource implements DataSource {
private String contents ;
private String mimetype ;
private String name ;
public StringDataSource( String contents
, String mimetype
, String name
) {
this.contents = contents ;
this.mimetype = mimetype ;
this.name = name ;
}
public String getContentType() {
return( mimetype ) ;
}
public String getName() {
return( name ) ;
}
public InputStream getInputStream() {
return( new StringBufferInputStream( contents ) ) ;
}
public OutputStream getOutputStream() {
throw new IllegalAccessError( “This datasource cannot be written to” ) ;
}
} }
But its being sent as an attachment to the outlook 2007 and outlook 2003, and even If I click the attachment to view and accept, I don't receive the Answer, which is the purpose of the application to have a similar functionality like outlook.
但是它是作为 Outlook 2007 和 Outlook 2003 的附件发送的，即使我点击附件查看并接受，我也没有收到答复，这是应用程序具有类似 Outlook 功能的目的。
Is there any procedure I need to know of, or is it the Invitation ID that makes the thing rough?
是否有任何我需要知道的程序，或者是邀请 ID 使事情变得艰难？
采纳答案by Amr Gawish
So I solved the problem, and here is what I found:
所以我解决了这个问题，这是我发现的：
1 - You have to update to Java Mail API 1.4.2 to make everything works fine
1 - 您必须更新到 Java Mail API 1.4.2 才能使一切正常
2 - Write the text/calendar part of your message like the following:
2 - 编写消息的文本/日历部分，如下所示：
package com.xx.xx;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.util.ByteArrayDataSource;
public class Email {
public Email() {
}
/*
* @param args
*/
public static void main(String[] args) {
try {
Email email = new Email();
email.send();
} catch (Exception e) {
e.printStackTrace();
}
}
public void send() throws Exception {
try {
String from = "[email protected]";
String to = "[email protected]";
Properties prop = new Properties();
prop.put("mail.smtp.host", "mailhost");
Session session = Session.getDefaultInstance(prop, null);
// Define message
MimeMessage message = new MimeMessage(session);
message.addHeaderLine("method=REQUEST");
message.addHeaderLine("charset=UTF-8");
message.addHeaderLine("component=VEVENT");
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
message.setSubject("Outlook Meeting Request Using JavaMail");
StringBuffer sb = new StringBuffer();
StringBuffer buffer = sb.append("BEGIN:VCALENDAR\n" +
"PRODID:-//Microsoft Corporation//Outlook 9.0 MIMEDIR//EN\n" +
"VERSION:2.0\n" +
"METHOD:REQUEST\n" +
"BEGIN:VEVENT\n" +
"ATTENDEE;ROLE=REQ-PARTICIPANT;RSVP=TRUE:MAILTO:[email protected]\n" +
"ORGANIZER:MAILTO:[email protected]\n" +
"DTSTART:20051208T053000Z\n" +
"DTEND:20051208T060000Z\n" +
"LOCATION:Conference room\n" +
"TRANSP:OPAQUE\n" +
"SEQUENCE:0\n" +
"UID:040000008200E00074C5B7101A82E00800000000002FF466CE3AC5010000000000000000100\n" +
" 000004377FE5C37984842BF9440448399EB02\n" +
"DTSTAMP:20051206T120102Z\n" +
"CATEGORIES:Meeting\n" +
"DESCRIPTION:This the description of the meeting.\n\n" +
"SUMMARY:Test meeting request\n" +
"PRIORITY:5\n" +
"CLASS:PUBLIC\n" +
"BEGIN:VALARM\n" +
"TRIGGER:PT1440M\n" +
"ACTION:DISPLAY\n" +
"DESCRIPTION:Reminder\n" +
"END:VALARM\n" +
"END:VEVENT\n" +
"END:VCALENDAR");
// Create the message part
BodyPart messageBodyPart = new MimeBodyPart();
// Fill the message
messageBodyPart.setHeader("Content-Class", "urn:content- classes:calendarmessage");
messageBodyPart.setHeader("Content-ID", "calendar_message");
messageBodyPart.setDataHandler(new DataHandler(
new ByteArrayDataSource(buffer.toString(), "text/calendar")));// very important
// Create a Multipart
Multipart multipart = new MimeMultipart();
// Add part one
multipart.addBodyPart(messageBodyPart);
// Put parts in message
message.setContent(multipart);
// send message
Transport.send(message);
} catch (MessagingException me) {
me.printStackTrace();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
3 - Replace your variable, and you are good to go!
3 - 替换您的变量，您就可以开始了！
回答by Jon Skeet
There's no sign that you're ever setting the from address to an actual address, so there's nowhere for the reply to come.
没有迹象表明您曾经将发件人地址设置为实际地址，因此没有任何地方可以收到回复。
That may not be the problem in your productioncode, but it looks like a problem here...
这可能不是您的生产代码中的问题，但在这里看起来像是一个问题......
回答by herau
You can use ical4j libraryin addition of javamail to build the message body (instead of using a StringBuffer).
除了 javamail 之外，您还可以使用ical4j 库来构建消息正文（而不是使用StringBuffer）。
Example:
例子：
Calendar calendar = new Calendar();
PropertyList calendarProperties = calendar.getProperties();
calendarProperties.add(Version.VERSION_2_0);
calendarProperties.add(Method.REQUEST);
// other properties ...
VEvent vEvent = new VEvent(/*startDate, endDate*/);
PropertyList vEventProperties = vEvent.getProperties();
vEventProperties.add(Priority.MEDIUM);
vEventProperties.add(Clazz.PUBLIC);
// other properties ...
calendar.getComponents().add(vEvent);
messageBodyPart.setDataHandler(new DataHandler(new ByteArrayDataSource(calendar.toString(), "text/calendar")));
回答by Juan Sánchez
I'd tried with Amr answer but I got an error in Session session = Session.getDefaultInstance(prop, null),
我曾尝试使用 Amr 答案，但在 Session session = Session.getDefaultInstance(prop, null) 中出现错误，
Well I fixed and here is the code I used and it worked perfectly.I hope it helps
Remember you need to add javax.mail library to your project
好吧，我修复了，这是我使用的代码，它运行良好。我希望它有助于
记住您需要将 javax.mail 库添加到您的项目中
import java.util.Properties;
import javax.activation.DataHandler;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.util.ByteArrayDataSource;
public class Email {
public Email() {
}
public static void main(String[] args) {
try {
Email email = new Email();
email.send();
} catch (Exception e) {
e.printStackTrace();
}
}
public void send() throws Exception {
try {
String from = "[email protected]";
String to = "[email protected]";
Properties prop = new Properties();
prop.put("mail.smtp.auth", "true");
prop.put("mail.smtp.starttls.enable", "true");
prop.put("mail.smtp.host", "smtp.gmail.com");
prop.put("mail.smtp.port", "587");
final String username = "[email protected]";
final String password = "123456789";
Session session = Session.getInstance(prop,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
// Define message
MimeMessage message = new MimeMessage(session);
message.addHeaderLine("method=REQUEST");
message.addHeaderLine("charset=UTF-8");
message.addHeaderLine("component=VEVENT");
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
message.setSubject("Outlook Meeting Request Using JavaMail");
StringBuffer sb = new StringBuffer();
StringBuffer buffer = sb.append("BEGIN:VCALENDAR\n" +
"PRODID:-//Microsoft Corporation//Outlook 9.0 MIMEDIR//EN\n" +
"VERSION:2.0\n" +
"METHOD:REQUEST\n" +
"BEGIN:VEVENT\n" +
"ATTENDEE;ROLE=REQ-PARTICIPANT;RSVP=TRUE:MAILTO:[email protected]\n" +
"ORGANIZER:MAILTO:[email protected]\n" +
"DTSTART:20180922T053000Z\n" +
"DTEND:20180927T060000Z\n" +
"LOCATION:Conference room\n" +
"TRANSP:OPAQUE\n" +
"SEQUENCE:0\n" +
"UID:040000008200E00074C5B7101A82E00800000000002FF466CE3AC5010000000000000000100\n" +
" 000004377FE5C37984842BF9440448399EB02\n" +
"DTSTAMP:20180922T120102Z\n" +
"CATEGORIES:Meeting\n" +
"DESCRIPTION:This the description of the meeting.\n\n" +
"SUMMARY:Test meeting request\n" +
"PRIORITY:5\n" +
"CLASS:PUBLIC\n" +
"BEGIN:VALARM\n" +
"TRIGGER:PT1440M\n" +
"ACTION:DISPLAY\n" +
"DESCRIPTION:Reminder\n" +
"END:VALARM\n" +
"END:VEVENT\n" +
"END:VCALENDAR");
// Create the message part
BodyPart messageBodyPart = new MimeBodyPart();
// Fill the message
messageBodyPart.setHeader("Content-Class", "urn:content- classes:calendarmessage");
messageBodyPart.setHeader("Content-ID", "calendar_message");
messageBodyPart.setDataHandler(new DataHandler(
new ByteArrayDataSource(buffer.toString(), "text/calendar")));// very important
// Create a Multipart
Multipart multipart = new MimeMultipart();
// Add part one
multipart.addBodyPart(messageBodyPart);
// Put parts in message
message.setContent(multipart);
// send message
Transport.send(message);
System.out.println("Success");
} catch (MessagingException me) {
me.printStackTrace();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
