jdbcTemplate通过@Autowired自动注入时，值为null的问题

Posted 2023-02-23 Vodka~

//Dao接口实现类,注入 jdbcTemplate
1. @Autowired
    private JdbcTemplate jdbcTemplate;
//错误示范，不能直接new，应该交给IOC处理
2.AccountImp accountImp =  new AccountImp();
//正确做法
 3.ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
        AccountImp accountImp = (AccountImp) applicationContext.getBean("accountImp");
或者
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:spring.xml")
public class PublicTest 
           

public class AccountCURD extends PublicTest 

    @Autowired
    AccountImp accountImp;