代码如下：

1、mybatis配置文件

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
    
      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  */ @Test public 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  */ @Test public 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  */ @Test public void findAll(){  SqlSession session = null;  try {   session = factory.openSession();   IStudentOperation studentOperation = session.getMapper(IStudentOperation.class);   List
    
      students = studentOperation.findAll();   System.out.println(students.size());  } catch (Exception e) {   e.printStackTrace();  }finally{   session.close();     } }  /**  * 更新记录  */ @Test public 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  */ @Test public 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();     } }}