问题：

在IDEA中将mapper文件夹（放各个.xml文件）放在非resource资源目录没有问题，放在java目录下报错：Could not resolve resource location pattern [classpath:mapper/*.xml]: class path resource [mapper/] cannot be resolved to URL because it does not exist在IDEA中将mapper文件夹（放各个.xml文件）放在非resource资源目