mybatis Invalid bound statement (not found)

解决方式：

1.mapper.xml与mapper.java放在相同目录

2.mapper.xml放在resource目录，目录层次结构和mapper.java一致

如：java代码  src/main/java/com/test/mapper/***Mapper.java

       xml文件   src/main/resources/com/test/mapper/***Mapper.xml