在netbeans上运行但在运行jar时没有错误？

问题描述

当我在netbeans上运行使用smslib的程序时，可以正常工作，但是当我生成jar文件并运行它时，控制台将向我显示此错误。 关于如何解决的任何想法？ 您的帮助将不胜感激。

log4j:WARN No appenders could be found for logger (smslib).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "Thread-6" java.lang.ExceptionInInitializerError
    at org.smslib.modem.SerialModemDriver.connectPort(SerialModemDriver.java:69)
    at org.smslib.modem.AModemDriver.connect(AModemDriver.java:114)
    at org.smslib.modem.ModemGateway.startGateway(ModemGateway.java:189)
    at org.smslib.Service$1Starter.run(Service.java:277)
Caused by: java.lang.RuntimeException: CommPortIdentifier class not found
    at org.smslib.helper.CommPortIdentifier.<clinit>(CommPortIdentifier.java:76)
    ... 4 more