用Main方法加载spring配置文件，出错

[收获de季节]

加载方法如下：

private static ApplicationContext ctx;

public static void main(String[] args) {		
	ctx = new ClassPathXmlApplicationContext("applicationContext-common.xml");
}

加载配置文件老是报下面的错误：
10:19:19,406 DEBUG StandardEnvironment:112 - Initializing new StandardEnvironment
10:19:19,409 DEBUG StandardEnvironment:107 - Adding [systemProperties] PropertySource with lowest search precedence
10:19:19,411 DEBUG StandardEnvironment:107 - Adding [systemEnvironment] PropertySource with lowest search precedence
10:19:19,411 DEBUG StandardEnvironment:116 - Initialized StandardEnvironment with PropertySources [systemProperties,systemEnvironment]
10:19:19,413 INFO ClassPathXmlApplicationContext:510 - Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@f3d6a5: startup date [Sat Mar 21 10:19:19 CST 2015]; root of context hierarchy
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.springframework.context.support.AbstractRefreshableApplicationContext.createBeanFactory(AbstractRefreshableApplicationContext.java:194)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:127)
at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)
at com.shineway.test.MybatisSpringTest.main(MybatisSpringTest.java:48)
Caused by: java.lang.NullPointerException
at org.springframework.beans.factory.support.DefaultListableBeanFactory.<clinit>(DefaultListableBeanFactory.java:107)

[收获de季节]

工程类型是web工程