我在尝试将资源依赖项注入我的单元测试时遇到错误。我的方法是编写一个 TestConfig.java 来替换用于管理 bean 连接的生产的 applicationContext.xml。这样我就可以使用内存数据库运行它并仅测试组件。
测试配置.java
@Configuration
@EnableTransactionManagement
public class TestConfig {
@Bean
public DataSource dataSource() {
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:mem:testdb");
ds.setUsername("sa");
ds.setPassword("");
return ds;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean(){
LocalContainerEntityManagerFactoryBean lcemfb
= new LocalContainerEntityManagerFactoryBean();
lcemfb.setDataSource(this.dataSource());
lcemfb.setPackagesToScan(new String[] {"com.dao","com.data"});
lcemfb.setPersistenceUnitName("MyTestPU");
HibernateJpaVendorAdapter va = new HibernateJpaVendorAdapter();
lcemfb.setJpaVendorAdapter(va);
Properties ps = new Properties();
ps.put("hibernate.dialect", "org.hibernate.dialect.HSQLDialect");
ps.put("hibernate.hbm2ddl.auto", "create");
lcemfb.setJpaProperties(ps);
lcemfb.afterPropertiesSet();
return lcemfb;
}
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager tm = new JpaTransactionManager();
tm.setEntityManagerFactory(this.entityManagerFactoryBean().getObject());
return tm;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation(){
return new PersistenceExceptionTranslationPostProcessor();
}
@Bean
public AutowiredAnnotationBeanPostProcessor autowiredAnnotationBeanPostProcessor()
{
return new AutowiredAnnotationBeanPostProcessor();
}
}
ProductsDaoTest.java
@ContextConfiguration(classes = { TestConfig.class })
@RunWith(SpringJUnit4ClassRunner.class)
public class ProductsDaoTest {
@Resource(name="com.dao.ProductsDao")
private ProductsDao testDao;
@Test
public void testSaveProduct() {
Product productA = new Product();
testDao.save(productA);
Set<Product> products = testDao.getAllProducts();
assertNotNull(products);
}
}
错误是 Error created bean with name 'com.dao.ProductsDaoTest': Injection of resource dependencies failed
所以它找不到ProductDao Bean,它是一个带有@Autowired sessionFactory 的@Repository。
所以我的猜测是,因为我没有使用 xml 命名 bean,所以它找不到它,尽管我认为它应该自动从 setPackagesToScan() 中获取它。那么有没有办法手动插入 Bean 映射以便找到呢?
更一般地说,这是测试 Spring DAO 配置的合理方法吗?
问候,伊恩