使用Java编写.ics iCal文件

我正在尝试使用java实现我自己的iCal创建者,由于某种原因,我无法识别我的.ics文件.我想知道我做错了什么,我可以得到与维基百科的示例完全一样的输出. .ics文件和程序生成后的文件之间有什么区别.

他们的例子：

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
BEGIN:VEVENT
UID:uid1@example.com
DTSTAMP:19970714T170000Z
ORGANIZER;CN=John Doe:MAILTO:john.doe@example.com
DTSTART:19970714T170000Z
DTEND:19970715T035959Z
SUMMARY:Bastille Day Party
END:VEVENT
END:VCALENDAR

我的.ics文件

BEGIN:VCALENDAR 
VERSION:1.0 
PRODID://Elara/lofy/tanare/delp/314sum2015// 
BEGIN:VEVENT 
UID:uid1@example.com
DTSTAMP:19970714T170000Z
ORGANIZER;CN=John Doe:MAILTO:john.doe@example.com
DTSTART:19970714T170000Z
DTEND:19970715T035959Z
SUMMARY:Bastille Day Party
END:VEVENT 
END:VCALENDAR 

这是用于生成.ics文件的代码.

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

    String testExample = "UID:uid1@example.com\nDTSTAMP:19970714T170000Z\nORGANIZER;
    CN=John Doe:MAILTO:john.doe@example.com\nDTSTART:19970714T170000Z
    \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();
            }
        }
    }

解决方法:

您可以使用iCal4j API进行日历.

标签：icalendar,java
来源： https://codeday.me/bug/20191028/1950060.html