使用BeanUtils的时候需要加载两个工具包：commons-beanutils-1.8.3.jar和commons-logging-1.1.1.jar，加载完成之后程序还出现一大推的错误，这个问题什么解决？
Exception in thread "main" java.lang.ExceptionInInitializerError
        at cn.itcast.java.reflect.IntroSpectorTest.main(IntroSpectorTest.java:25)
Caused by: com.sun.org.apache.commons.logging.LogConfigurationException: com.sun.org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException) (Caused by com.sun.org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException))
        at com.sun.org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
        at com.sun.org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
        at com.sun.org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
        at com.sun.org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
        at com.sun.org.apache.commons.beanutils.BeanUtils.<clinit>(BeanUtils.java:111)
        ... 1 more
Caused by: com.sun.org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException)
        at com.sun.org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
        at com.sun.org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
        ... 5 more
Caused by: java.lang.NullPointerException
        at com.sun.org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:374)
        ... 6 more

我在网上找一下，说是引入的BeanUtils时导入的包不对，要导入import org.apache.commons.beanutils.BeanUtils;

搞定了，谢谢！包导错了