MyBatis-08 接口编程

package com.cd;

public interface StudentMapper {
    public Student selectStudent(int id);
    public void insertStudent(Student stu);
    public void deleteStudent(int id);
    public void updateStudent(Student stu);
}

package com.cd;

import java.io.IOException;
import java.io.InputStream;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class Test {

    public static void main(String[] args) {
        String resource = "com/cd/mybatis-config.xml";
        InputStream inputStream;
        try {
            inputStream = (InputStream) Resources.getResourceAsStream(resource);
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
            SqlSession session = sqlSessionFactory.openSession();
            StudentMapper mapper = session.getMapper(StudentMapper.class);

            // 查询
            Student stu = mapper.selectStudent(2);
            System.out.println(stu.getName());

            // 添加
            Student stu2 = new Student();
            stu2.setName("rose");
            stu2.setAge(18);
            mapper.insertStudent(stu2);
            session.commit();
            // 删除
            mapper.deleteStudent(4);
            session.commit();

            // 更新
            Student stu3 = new Student();
            stu3.setId(8);
            stu3.setName("big rose");
            stu3.setAge(20);

            mapper.updateStudent(stu3);
            session.commit();

        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}