JUnit测试报错

public class ProductCategoryDaoTest extends BaseTest {
	@Autowired
	private ProductCategoryDao productCategoryDao;

	@Test
	public void testBQueryByShopId() throws Exception {
		long shopId = 1;
		List<ProductCategory> productCategoryList = productCategoryDao.queryProductCategoryList(shopId);
		System.out.println("店铺类别数为：" + productCategoryList.size());
	}

商品类别列表展示，JUnit单元测试的时候显示错误，

严重: Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@4157f54e] to prepare test instance [com.hbut.o2o.dao.ProductCategoryDaoTest@71e693fa]

java.lang.IllegalStateException: Failed to load ApplicationContext