晚上用马士兵的hibernate练习项目做了一个导入，但是一直报slf4j错误，后根据视频把jar包引入，
但是又出现了以下错误：
- Java code
SLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [jar:file:/D:/Jar%20Package/slf4j-1.6.4/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: Found binding in [jar:file:/D:/Jar%20Package/slf4j-1.6.4/slf4j-nop-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.Exception in thread "main" java.lang.ExceptionInInitializerError at org.hibernate.cfg.Configuration.reset(Configuration.java:217) at org.hibernate.cfg.AnnotationConfiguration.reset(AnnotationConfiguration.java:233) at org.hibernate.cfg.Configuration.<init>(Configuration.java:197) at org.hibernate.cfg.Configuration.<init>(Configuration.java:201) at org.hibernate.cfg.AnnotationConfiguration.<init>(AnnotationConfiguration.java:108) at com.bjsxt.hibernate.HibernateQLTest.beforeClass(HibernateQLTest.java:21) at com.bjsxt.hibernate.HibernateQLTest.main(HibernateQLTest.java:367)Caused by: java.lang.NullPointerException at org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:167) at org.hibernate.cfg.Environment.<clinit>(Environment.java:575) ... 7 more
真是不知道少了哪个包，很讨厌这种小错误，浪费了一晚上，请朋友们帮分析下。谢谢
------解决方案--------------------
看错误貌似是导入包重复了
- Java code
jar:file:/D:/Jar%20Package/slf4j-1.6.4/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class；jar:file:/D:/Jar%20Package/slf4j-1.6.4/slf4j-nop-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class