一.设值注入
1.建立InjectionDaoImpl和InjectionServiceImpl两个类分别为InjectionDao和InjectionService两个接口的实现类，且InjectionDAO为InjectionServiceImpl的一个属性
public class InjectionServiceImpl implements InjectionService{
private InjectionDAO injectionDAO;
//设置注入
public void setInjectionDAO(InjectionDAO injectionDAO) {
this.injectionDAO = injectionDAO;
}
@Override
public void save(String arg) {
System.out.println("Service 接受参数:" + arg);
arg = arg + ":" + this.hashCode();
injectionDAO.save(arg);
}
}
2.spring-injection.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd" >
<bean id="injectionService" class="main.com.pt.ioc.injection.service.InjectionServiceImpl">
<property name="injectionDAO" ref="injectionDAO"></property>
</bean>
<bean id="injectionDAO" class="main.com.pt.ioc.injection.dao.InjectionDaoImpl"></bean>
</beans>
二.构造注入
1.同上定义一个仿数据库操作有四个类
public class InjectionServiceImpl implements InjectionService{
private InjectionDAO injectionDAO;
//构造注入
public InjectionServiceImpl(InjectionDAO injectionDAO){
this.injectionDAO = injectionDAO;
}
@Override
public void save(String arg) {
System.out.println("Service 接受参数:" + arg);
arg = arg + ":" + this.hashCode();
injectionDAO.save(arg);
}
}
2.spring-injection.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd" >
<bean id="injectionService" class="main.com.pt.ioc.injection.service.InjectionServiceImpl">
<constructor-arg name="injectionDAO" ref="injectionDAO"></constructor-arg>
</bean>
<bean id="injectionDAO" class="main.com.pt.ioc.injection.dao.InjectionDaoImpl"></bean>
</beans>
三.测试方法
@RunWith(BlockJUnit4ClassRunner.class)
public class TestInjection extends UnitTestBase{
public TestInjection(){
super("classpath*:spring-injection.xml");
}
@Test
public void testSetter(){
InjectionService service = super.getBean("injectionService");
service.save("对不起，你是傻逼");
}
}