Mybatis为什么获取SqlSession报空指针异常？

Question

报错如图
java

@Test
    public void testFindAll() throws IOException {
        //1.读取配置文件
        InputStream in = Resources.getResourceAsStream("mybatis-cfg.xml");
        //2.创建SqlSessionFactory工厂对象
        SqlSessionFactoryBuilder builder =new SqlSessionFactoryBuilder();
        SqlSessionFactory build = builder.build(in);
        //3.得到SqlSession对象
        SqlSession sqlSession=factory.openSession();
        //4.通过SqlSession获得接口的代理对象
        UserDao mapper = sqlSession.getMapper(UserDao.class);
        //5.通过代理对象执行操作
        List<User> userList = mapper.findAll();
        for (User user : userList) {
            System.out.println(user);
        }
        //6.释放资源
        sqlSession.close();
        in.close();
    }

运行之后一直java.lang.NullPointerException 空指针异常 26行鼠标放上去显示 Find why 'factory' coubls be null 点击之后 SqlSession sqlSession=factory.openSession();in MybatisTestFindAll()(filter:null)
网上该找的找了无法解决，请求解决方法

Answer 1

你的26行是哪行啊