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[Java教程]BeanFactory not initialized or already closed

今天在写Spring程序时遇到了一个很常见的错误,而我以前好像一直没碰到过,今天才见到这个错误,经过研究解决了这个错误,犯这个错误真是不应该啊。

log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).log4j:WARN Please initialize the log4j system properly.log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.Exception in thread "main" java.lang.IllegalStateException: BeanFactory not initialized or already closed - call 'refresh' before accessing beans via the ApplicationContext  at org.springframework.context.support.AbstractRefreshableApplicationContext.getBeanFactory(AbstractRefreshableApplicationContext.java:172)  at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1097)  at com.pb.demo.Test.main(Test.java:12)

 

BeanFactory没有实例化或者已经关闭了,其实产生错误的原因很简单,在写:

ApplicationContext ctx = new ClassPath

时,没有指定配置文件,Spring实例化BeanFactory的时候是默认到classPath下面查找名为applicationContext.

这就是错误的原因,在括号写上配置文件名就行了。

ApplicationContext ctx = new ClassPath

这样的话就不会出现这样的错误了。