代码如下：

1、mybatis配置文件

 <mappers><mapper class="org.zsm.myBatis.day02.inner.IStudentOperation"/></mappers>

2、StudentMapper.java类

package org.zsm.myBatis.day02.inner;
import java.util.List;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import org.zsm.myBatis.day02.domain.Student;
public interface IStudentOperation {@Select("select * from student where id = #{id}")public Student getById(int id);@Select("select * from student")public List<Student> findAll();@Insert("insert into student(name,gender,major,grade) values(#{name},#{gender},#{major},#{grade})")public void insertStudent(Student student);@Update("update student set name=#{name},gender=#{gender},major=#{major},grade=#{grade} where id = #{id}")public void updateStudent(Student student);@Delete("delete from student where id = #{id}")public void deleteStudent(int id);
}

3、测试

package org.zsm.myBatis.day02.test;
import java.util.List;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.junit.Test;
import org.zsm.myBatis.day02.domain.Student;
import org.zsm.myBatis.day02.inner.IStudentOperation;
import org.zsm.myBatis.day02.util.SqlSessionFactoryUtil;
public class Test02 {private SqlSessionFactory factory = SqlSessionFactoryUtil.getSqlSessionFactory();/*** 测试新增*/@Testpublic void insert() {SqlSession session = null;try {Student student = new Student();student.setName("王刚");student.setGender("男");student.setMajor("软件开发");student.setGrade("2010");session = factory.openSession();IStudentOperation studentOperation = session.getMapper(IStudentOperation.class);studentOperation.insertStudent(student);session.commit();} catch (Exception e) {e.printStackTrace();}finally{session.close();   }}/*** 查询单条记录*/@Testpublic void getById(){SqlSession session = null;try {session = factory.openSession();IStudentOperation studentOperation = session.getMapper(IStudentOperation.class);Student student = studentOperation.getById(1);System.out.println(student.getName()+" "+student.getGender()+" "+student.getMajor()+" "+student.getGrade());} catch (Exception e) {e.printStackTrace();}finally{session.close();   }}/*** 查询所有记录*/@Testpublic void findAll(){SqlSession session = null;try {session = factory.openSession();IStudentOperation studentOperation = session.getMapper(IStudentOperation.class);List<Student> students = studentOperation.findAll();System.out.println(students.size());} catch (Exception e) {e.printStackTrace();}finally{session.close();   }}/*** 更新记录*/@Testpublic void update(){SqlSession session = null;try {session = factory.openSession();IStudentOperation studentOperation = session.getMapper(IStudentOperation.class);Student student = studentOperation.getById(5);student.setName("王刚刚");studentOperation.updateStudent(student);session.commit();} catch (Exception e) {e.printStackTrace();}finally{session.close();   }}/*** 删除记录*/@Testpublic void delete(){SqlSession session = null;try {session = factory.openSession();IStudentOperation studentOperation = session.getMapper(IStudentOperation.class);studentOperation.deleteStudent(5);session.commit();} catch (Exception e) {e.printStackTrace();}finally{session.close();   }}
}