执行jar文件时遇到此错误SessionFactory创建失败java.lang.NoClassDefFoundError：org / hibernate / cfg / Configuration

Question

我从命令promt执行我的jar文件时遇到错误..但在eclipse运行我的程序时工作正常..没有得到这个错误的确切原因我已经尝试了很多方法我来自谷歌...

SessionFactory creation failedjava.lang.NoClassDefFoundError: org/hibernate/cfg/
Configuration
Exception in thread "main" java.lang.ExceptionInInitializerError
        at com.valto.RetentionMain.HibernateUtil.<clinit>(HibernateUtil.java:26)

        at com.valto.RetentionDao.RetentionDao.getNotificationDays(RetentionDao.
java:48)
        at com.valto.RetentionMain.RetentionMainClass.cronTask(RetentionMainClas
s.java:19)
        at com.valto.RetentionMain.RetentionMainClass.main(RetentionMainClass.ja
va:97)
Caused by: java.lang.NoClassDefFoundError: org/hibernate/cfg/Configuration
        at com.valto.RetentionMain.HibernateUtil.<clinit>(HibernateUtil.java:18)

        ... 3 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.cfg.Configuration
        at java.net.URLClassLoader$1.run(Unknown Source)
        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)