Mybatis 报错

问题

java.lang.ExceptionInInitializerError
Caused by: org.apache.ibatis.exceptions.PersistenceException

<select id="getTeacher" resultType="Teacher">
      select * from teacher where id = #{id}
</select>

//类型无法识别，得全部写下来 com.chen.entity.Teacher

<select id="getTeacher" resultType="com.chen.entity.Teacher">
      select * from teacher where id = #{id}
</select>

还有可能是写了相同的函数名，即使返回类型和输入类型不同

public interface TeacherMapper {
    public List<Teacher> getTeacher();

    public Teacher getTeacher(int id);
}