十三、java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long
java.lang.ClassCastException:java.math.BigIntegercannotbecasttojava.lang.Long
atbadyflf.action.impl.HibernateProductDao.findByPnum(HibernateProductDao.java:79)
atbadyflf.test.TestMain.findByPnum(TestM