Error building SqlSession

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2022-01-16

Caused by: org.apache.ibatis.exceptions.PersistenceException:

Error building SqlSession.

The error may exist in com/atguigu/dao/TeacherMapper.xml

Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.atguigu.dao.TeacherMapper.getTeacher. please check com/atguigu/dao/TeacherMapper.xml and com/atguigu/dao/TeacherMapper.java (best guess)

getTeacher方法同时写了注解，和xml：删除自己不需要的即可
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