编写好applicationContext.xml后启动Tomcat7.0, 出现以下错误：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sessionFactory’ defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is java.io.FileNotFoundException: class path resource [com/lhl/expbos/model] cannot be resolved to URL because it does not exist
接着查看out包发现里面没有com/lhl/expbos/model路径，同时发现包里有文件的路径才有被打包，所以在model下写了个User类，再重启Tomcat发现问题解决了。