java.io.FileNotFoundException : class path resource can't be opened

Question

我从事 Spring Web MVC 项目并尝试为数据库操作编写一些测试。下面提供了测试类，

@ActiveProfiles("dev")
@ContextConfiguration(locations = {
        "classpath:com/puut/bitcoin/config/dao-context.xml",
//        "classpath:com/puut/bitcoin/config/security-context.xml",
        "classpath:com/puut/bitcoin/dao/test/config/datasource.xml"
})

@RunWith(SpringJUnit4ClassRunner.class)
public class OfferDaoTests {

    @Autowired
    private DataSource dataSource;

    @Autowired
    private OffersDao offersDao;

    @Before
    public void init() {
        JdbcTemplate jdbc = new JdbcTemplate(dataSource);

        jdbc.execute("delete from offers");
        jdbc.execute("delete from users");
        jdbc.execute("delete from authorities");
    }

    @Test
    public void testCreateUser() {

        Offer offer = new Offer("johnwpurcell", "john@caveofprogramming.com", "This is a test offer.");

        assertTrue("Offer creation should return true", offersDao.create(offer));

        List<Offer> offers = offersDao.getOffers();

        assertEquals("Should be one offer in database.", 1, offers.size());

        assertEquals("Retrieved offer should match created offer.", offer, offers.get(0));

        // Get the offer with ID filled in.
        offer = offers.get(0);

        offer.setText("Updated offer text.");
        assertTrue("Offer update should return true", offersDao.update(offer));

        Offer updated = offersDao.getOffer(offer.getId());

        assertEquals("Updated offer should match retrieved updated offer", offer, updated);

        offersDao.delete(offer.getId());

        List<Offer> empty = offersDao.getOffers();

        assertEquals("Offers lists should be empty.", 0, empty.size());
    }
}

下面提供了项目结构，

我收到错误消息，通知 datasource.xml 无法打开，因为它不存在。它确实存在，路径也正确。

Caused by: java.io.FileNotFoundException: class path resource [com/puut/bitcoin/dao/test/config/datasource.xml] cannot be opened because it does not exist
    at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:330)

在 datasource.xml 文件中，我看到未为此文件配置应用程序上下文，并且 IntelliJ 实际上提供了一些选项这样做。

这对我来说不是很清楚，因为我已在 OfferDaoTests 中定义了此文件，如下所示，

@ContextConfiguration(locations = {
            "classpath:com/puut/bitcoin/config/dao-context.xml",
    //        "classpath:com/puut/bitcoin/config/security-context.xml",
            "classpath:com/puut/bitcoin/dao/test/config/datasource.xml"
    })

我也没有看到在 web.xml 中定义该文件的意义。因为，这只是为了测试数据库操作。另外，web.xml 中突然出现一些错误，该错误不久前还不存在。

有什么想法吗？

Answer 1

根据 Spring documentation ，@ContextConfiguration 查找资源。因此，您可以创建一个 resource 文件夹，最好在 /test 文件夹下，其结构为 com/puut/bitcoin/dao/test/config/datasource.xml 。这样 spring 配置应该能够读取测试的资源。因此，您的文件夹结构应如下所示:

/test/java - contains your test cases
/test/resources - contains your XML/configuration files