二、工具类

public class MyBatisUtil {
    private static SqlSessionFactory factor = null;

    static {
        try {
            factor = new SqlSessionFactoryBuilder()
                    .build(Resources.getResourceAsStream("mybatis.xml"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static SqlSession getSession(){
        SqlSession session = null;
        if(factor!=null) {
            session = factor.openSession();
        }
        return session;
    }

    public static void commit(int num,SqlSession session){
        if(num>0){
            // 提交事务
            session.commit();
            System.out.println("SUCCESS!");
        }else {
            // 回滚事务
            session.rollback();
            System.out.println("FAILED!");
        }
    }
}