MyBatis工具类

public class MybatisUtils {

    private static SqlSessionFactory sqlSessionFactory;

    static {
        try {
            //使用Mybatis第一步：获取sqlSessionFactory对象
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    //有了sqlSessionFactory,可以从中获得SqlSession实例
    //SqlSession 完全包含了面向数据库执行SQL命令所需的方法
    public static SqlSession getSqlSession(){
        return sqlSessionFactory.openSession();
    }


}