Error creating bean with name 'sqlSessionFactory' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is
Could not resolve resource location pattern [classpath:com/test/mapper/*.xml]: class path resource [com/test/mapper/] cannot be resolved to URL because it does not exist

Spring MVC error
When you encounter this error, put the entity class in src/main/java instead of src/test/java