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嗨，我在NoClassDefFoundError添加activation.jar、编译和运行时收到错误消息。

该类DataHandler存在于activation.jar

注意：我在 android 项目中使用这个。

以下是我的错误：

    06-25 15:19:22.237  10504-10611/?E/AndroidRuntime: FATAL EXCEPTION: Timer-0
    java.lang.NoClassDefFoundError: javax.activation.DataHandler
    at javax.mail.internet.MimeMessage.setContent(MimeMessage.java:1482)
    at javax.mail.internet.MimeBodyPart.setText(MimeBodyPart.java:1066)
    at javax.mail.internet.MimeMessage.setText(MimeMessage.java:1521)
    at javax.mail.internet.MimeMessage.setText(MimeMessage.java:1505)
    at com.corpus.application.channellist.ReminderAlarmService.notifyReminderListener(ReminderAlarmService.java:90)
    at com.corpus.middleware.reminder.ReminderManager$2.run(ReminderManager.java:135)
    at java.util.Timer$TimerImpl.run(Timer.java:284)
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1 回答 1

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将您的外部 jar 粘贴到libs目录中，然后右键单击--> --> --> -->目录pathlibs directoryprojectpropertiesjava build pathadd external jar'sselect your libs

于 2013-06-25T13:08:46.537 回答