Mybatis 错误：Error parsing Mapper XML. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias

mybatis\mapper\AdminMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'Admin'.  Cause: java.lang.ClassNotFoundException: Cannot find class: Admin]

ResultType要写全类名，不然会被作为Mybatis的Alias 。 使用了MybatisGenerator 可以使用resultMap="BaseResultMap" 自定做了封装

<select id="selectAdminByLoginAcct" resultMap="BaseResultMap">
  select id, login_acct, user_pswd, user_name, email, create_time from t_admin where
  login_acct = #{loginAcct}
</select>