如何创建向日历添加条目的链接？

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最佳答案

UPDATE (free for personal use):
HTTPS IS NOW SUPPORTED

While my answer below detailing how-to for each service WILL work, IMO it's much easier now to go with a third-party like AddThisEvent [https://addthisevent.com]. It lets you customize lots of options as well as add to Facebook and more. Unfortunately, they've now made it a paid service for anything other than personal use and do enforce this.

I assume there are other third-party solutions like this one, but I can only speak to this one, and it has worked great for us so far.

For an "Add to my Google Calendar", they used to have a code generator form you could use, but have since taken it down. For more details on Google Calendar links, see squarecandy's answer below.

For Outlook, it's a BIT more complicated, but basically you need to create a .vcs file with the event's data, and just make a link to that file. Step-by-step instructions here.

For an iCal link, you could use a PHP class like this one, or follow this page's instructions on how to create an ics file (iCal file).

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You can have the program create an .ics (iCal) version of the calendar and then you can import this .ics into whichever calendar program you'd like: Google, Outlook, etc.

I know this post is quite old, so I won't bother inputting any code. But please comment on this if you'd like me to provide an outline of how to do this.

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The links in Dave's post are great. Just to put a few technical details about the google links into an answer here on SO:

Google Calendar Link

<a href="http://www.google.com/calendar/event?action=TEMPLATE&text=Example%20Event&dates=20131124T010000Z/20131124T020000Z&details=Event%20Details%20Here&location=123%20Main%20St%2C%20Example%2C%20NY">Add to gCal</a>

the parameters being:

action=TEMPLATE (required)
text (url encoded name of the event)
dates (ISO date format, startdate/enddate - must have both start and end time - the button generator will let you leave the endtime blank, but you must have one or it won't work.)
- to use the user's timezone: 20131208T160000/20131208T180000
- to use global time, convert to UTC, then use 20131208T160000Z/20131208T180000Z
- all day events, you can use 20131208/20131209 - note that the button generator gets it wrong. You must use the following date as the end date for a one day all day event, or +1 day to whatever you want the end date to be.
details (url encoded event description/details)
location (url encoded location of the event - make sure it's an address google maps can read easily)

Update Feb 2018:

Here's a new link structure that seems to support the new google version of google calendar w/o requiring API interaction:

https://calendar.google.com/calendar/r/eventedit?text=My+Custom+Event&dates=20180512T230000Z/20180513T030000Z&details=For+details,+link+here:+https://example.com/tickets-43251101208&location=Garage+Boston+-+20+Linden+Street+-+Allston,+MA+02134

New base url: https://calendar.google.com/calendar/r/eventedit

New parameters:

text (name of the event)
dates (ISO date format, startdate/enddate - must have both start and end time)
- an event w/ start/end times: 20131208T160000/20131208T180000
- all day events, you can use 20131208/20131209 - end date must be +1 day to whatever you want the end date to be.
ctz (timezone such as America/New_York - leave blank to use the user's default timezone. Highly recommended to include this in almost all situations. For example, a reminder for a video conference: if three people in different timezones clicked this link and set a reminder for their "own" Tuesday at 10:00am, this would not work out well.)
details (url encoded event description/details)
location (url encoded location of the event - make sure it's an address google maps can read easily)
add (comma separated list of emails - adds guests to your new event)

Notes:

the old url structure above now redirects here
supports https
deals w/ timezones better
accepts + for space in addition to %20 (urlencode vs rawurlencode in php - both work)

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To add to squarecandy's google calendar contribution, here the brand new

OUTLOOK CALENDAR format (Without a need to create .ics) !!

<a href="https://bay02.calendar.live.com/calendar/calendar.aspx?rru=addevent&dtstart=20151119T140000Z&dtend=20151119T160000Z&summary=Summary+of+the+event&location=Location+of+the+event&description=example+text.&allday=false&uid=">add to Outlook calendar</a>

test it

Best would be to url_encode the summary, location and description variable's values.

For the sake of knowledge,

YAHOO CALENDAR format

<a href="https://calendar.yahoo.com/?v=60&view=d&type=20&title=Summary+of+the+event&st=20151119T090000&et=20151119T110000&desc=example+text.%0A%0AThis+is+the+text+entered+in+the+event+description+field.&in_loc=Location+of+the+event&uid=">add to Yahoo calendar</a>

test it

Doing it without a third party holds a lot of advantages for example using it in emails.

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Litmus has a great post detailing how to build a neat solution that works well across the major email and calendar clients, including catering for users who use clients from different vendors.

It is far from trivial, given the non-standardised nature of this space, but if you're willing to roll up your sleeves for a couple of days, you can get something that works well and doesn't come with a monthly price tag and limits on usage!

https://www.litmus.com/blog/how-to-create-an-add-to-calendar-link-for-your-emails/

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You can generate a ics file which include the meeting information

the ics file look like this

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Michael Angstadt//biweekly 0.6.4//EN
METHOD:REQUEST
BEGIN:VEVENT
UID:c7a913c7-3276-4828-8606-b841f2870475
DTSTAMP:20220519T070000Z
SUMMARY: Booking you for this date
DESCRIPTION:You having been invited to the event
DTSTART:20220519T070000Z
DURATION:PT1H
ORGANIZER;CN=Company Team:mailto:info@XXXXXX.com
ATTENDEE;ROLE=REQ-PARTICIPANT;CN=Not Amazing Attendee:mailto:*********@gmail.com
END:VEVENT
END:VCALENDAR

also the java code to generate ics file is here

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;


public class iCal {


private String version = "VERSION:1.0 \n";
private String prodid = "PRODID://Elara/lofy/tanare/delp/314sum2015// \n";
private String calBegin = "BEGIN:VCALENDAR \n";
private String calEnd = "END:VCALENDAR \n";
private String eventBegin = "BEGIN:VEVENT \n";
private String eventEnd = "END:VEVENT \n";


public void iCal() {
}


public static void main(String[] args) {


}


public void write(String name) {
StringBuilder builder = new StringBuilder();
builder.append(name);
builder.append(".ics");


String testExample = "UID:uid1@example.com\\nDTSTAMP:19970714T170000Z\\nORGANIZER;\n"
+ "    CN=John Doe:MAILTO:john.doe@example.com\\nDTSTART:19970714T170000Z\n"
+ "    \\nDTEND:19970715T035959Z\\nSUMMARY:Bastille Day Party\\n";


try {


File file = new File(builder.toString());


// if file doesnt exists, then create it
if (!file.exists()) {
file.createNewFile();
}


FileWriter fw = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fw);
bw.write(calBegin);
bw.write(version);
bw.write(prodid);
bw.write(eventBegin);
bw.write(testExample);
bw.write(eventEnd);
bw.write(calEnd);


bw.close();


System.out.println("Done");
} catch (IOException e) {
e.printStackTrace();
}
}
}