...Tried to access field org.slf4j.impl.StaticLoggerBinder.SINGLETON...

在做Hiernate4和Spring3的集成时，发现如下的Exception： 

 

Caused by: java.lang.IllegalAccessError: tried to access field org.slf4j.impl.StaticLoggerBinder.SINGLETON from class org.slf4j.LoggerFactory
	at org.slf4j.LoggerFactory.<clinit>(LoggerFactory.java:60)
	at net.sf.ehcache.config.ConfigurationFactory.<clinit>(ConfigurationFactory.java:51)
	at org.hibernate.cache.ehcache.internal.util.HibernateUtil.loadAndCorrectConfiguration(HibernateUtil.java:63)
	at org.hibernate.cache.ehcache.EhCacheRegionFactory.start(EhCacheRegionFactory.java:93)
	at org.hibernate.internal.CacheImpl.<init>(CacheImpl.java:70)
	at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:40)
	at org.hibernate.engine.spi.CacheInitiator.initiateService(CacheInitiator.java:35)
	at org.hibernate.service.internal.SessionFactoryServiceRegistryImpl.initiateService(SessionFactoryServiceRegistryImpl.java:91)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:176)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:150)
	at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:264)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1790)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1861)
	at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:247)
	at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:373)
	at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:358)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1541)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1479)
	... 22 more

 

 

这个问题的出现是由于slf4j-log4j12 jar的变化，从1.5.6版本后，slf4j-log4j12 jar不再允许访问org.slf4j.impl.StaticLoggerBinder.SINGLETON.

 

有2中解决方案：

1. 去掉项目中的所有低版本的slf4j-api.jar ，slf4j-log4j12.jar. （低于1.5.6版本）

 

2. 如果确实需要使用slf4j-api.jar,则使用1.5.6以上版本的slf4j-api.jar和slf4j-log4j12.jar

 

<dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.5.6</version>

 

<dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.5.6</version></dependency>