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我想使用 ical4j 向用户发送事件。当我执行此代码时：

    CompatibilityHints.setHintEnabled(CompatibilityHints.KEY_RELAXED_UNFOLDING, true);
    // Create a TimeZone
    TimeZoneRegistry registry = TimeZoneRegistryFactory.getInstance().createRegistry();
    TimeZone timezone = registry.getTimeZone("Europe/Paris");
    VTimeZone tz = timezone.getVTimeZone();

我收到此错误；

Exception in thread "main" java.lang.NoClassDefFoundError: edu/emory/mathcs/backport/java/util/concurrent/ConcurrentHashMap
at net.fortuna.ical4j.util.CompatibilityHints.<clinit>(CompatibilityHints.java:85)
at net.fortuna.ical4j.model.Iso8601.<init>(Iso8601.java:78)
at net.fortuna.ical4j.model.Date.<init>(Date.java:133)
at net.fortuna.ical4j.model.DateTime.<init>(DateTime.java:244)
at jconge_batches.TestCalendar.main(TestCalendar.java:106)
    Caused by: java.lang.ClassNotFoundException:       edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 5 more

我在我的类路径中添加了 ical4j.jar。

我该如何解决这个错误？

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1 回答 1

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以下是 ica4j 1.x 所需的库：

  • backport-util-concurrent.jar
  • commons-codec.jar
  • commons-io.jar
  • commons-lang.jar
  • commons-logging.jar
  • junit.jar

commons-io 和 junit 仅用于单元测试。

于 2014-01-15T23:17:14.193 回答