Spring自动注入及整合测试

新项目用了Spring2.5的@Autowired方式，大大的节省了配置文件；下面来试一试：

Dao层,这里省去了所有的getter和setter方法，以后不用拉这么长了:)

@Repository
public class UserDaoImpl extends GenericDaoJpa<User, Long> implements UserDao {

	public UserDaoImpl() {
		super(User.class);
	}
}

Service层,这里省去了所有的getter和setter方法，以后不用拉这么长了:)

@Service
@Transactional(rollbackFor = Exception.class)
public class UserServiceImpl implements IUserService {
	@Autowired
	private UserDao userDao;
	@Autowired
	private GroupDao groupDao;
}

XML配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">

	<!-- 数据源配置  -->
	<bean id="dataSource"
		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName">
			<value>${DB.DRIVERCLASSNAME}</value>
		</property>
		<property name="url">
			<value>${DB.URL}</value>
		</property>
		<property name="username">
			<value>${DB.USERNAME}</value>
		</property>
		<property name="password">
			<value>${DB.PASSWORD}</value>
		</property>
	</bean>

	<bean id="placeholderProperties"
		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="locations">
			<list>
				<!--
				<value>classpath:config.properties</value>
				-->
				<value>file:${user.home}/config.properties
				</value>
			</list>
		</property>
		<property name="ignoreResourceNotFound" value="false" />
	</bean>

	<!-- JPA EntityManagerFactoryBean for EntityManager -->
	<bean id="entityManagerFactory"
		class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="jpaVendorAdapter">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
				<property name="showSql" value="true" />
				<property name="generateDdl" value="true" />
				<property name="databasePlatform" value="org.hibernate.dialect.DB2Dialect" />
			</bean>
		</property>
	</bean>

	<!-- Transaction manager for JPA -->
	<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory">
			<ref bean="entityManagerFactory" />
		</property>
	</bean>

	<tx:annotation-driven transaction-manager="transactionManager" />

	<!-- Spring Annotation -->
	<context:annotation-config />

	<!-- Spring auto scan base package -->
	<context:component-scan base-package="com.test" /> <-- 这里是包名,还有其它参数可配，这里就不详解了-->

</beans>

看这里的spring配置多简，真是为我们省却了不少的配置。
另外再看我们的测试类：

@RunWith(SpringJUnit4ClassRunner.class)   
@ContextConfiguration(locations = {"classpath:core-context.xml"})   
public class ChatTest extends TestCase {
	
	
	
	@Autowired
	private IUserService userService;
	
	@Test
	private void testSpring(){
		List<User> userList = userService.getAllUser();
		if(userList!=null){
			System.out.println(userList.size());
		}
	}

这样就可以了， 测试类也可以注入了，而且不用context.getBean()的方式去取了，多方便； 不过这里要注意的一个地方是，JUnit test如果低版本的话要升级到4.6,另外我的4.8是不行的，后来我改为4.6就可以了。