Failed to load class "org.slf4j.impl.StaticLogger

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最近将Hibernate3.2.6升级为3.5.3，在配置文件等都没变的情况下，启动项目时，出现以下异常

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder
at org.slf4j.LoggerFactory.getSingleton(LoggerFactory.java:223)
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:120)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:111)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:269)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:255)
at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:165)
at com.bjsxt.usermgr.util.ExportDB.main(ExportDB.java:11)
Caused by: java.lang.ClassNotFoundException: org.slf4j.impl.StaticLoggerBinder
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
... 8 more

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder  at org.slf4j.LoggerFactory.getSingleton(LoggerFactory.java:223)  at org.slf4j.LoggerFactory.bind(LoggerFactory.java:120)  at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:111)  at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:269)  at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)  at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:255)  at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:165)  at com.bjsxt.usermgr.util.ExportDB.main(ExportDB.java:11) Caused by: java.lang.ClassNotFoundException: org.slf4j.impl.StaticLoggerBinder  at java.net.URLClassLoader$1.run(URLClassLoader.java:200)  at java.security.AccessController.doPrivileged(Native Method)  at java.net.URLClassLoader.findClass(URLClassLoader.java:188)  at java.lang.ClassLoader.loadClass(ClassLoader.java:306)  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)  at java.lang.ClassLoader.loadClass(ClassLoader.java:251)  at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)  ... 8 more

hibernate工程里面使用的是hibernate3.5.3的Lib。

提示信息中多次提到SLF4J，google了一下，才发现这是现在的Hibernate使用SLF4J API记录日志，所以在Hibernate的lib中，不再提供Log4J的包，而大部分框架依然使用Log4J记录日志，这样导致了兼容性问题。

解决方法：

下载并添加以下两个包即可解决：

1、log4j-1.2.16.jar

2、slf4j-log4j12-1.5.5.jar

以上两个包文件的版本当然是可以不一样的，但推荐使用最新的