首先,按照Spring系列一中的环境搭建方式搭建好我们的开发环境,如下图所示:
从图中我们可以看到需要创建的包以及类和接口:
cs.csdn.Junit为JUnit测试包
cs.csdn.Service为服务类包
GreetingService接口源码:
package cn.csdn.service; public interface GreetingService { void sayGreeting(); }
GreetingServiceImpl接口实现类源码:
package cn.csdn.service; public class GreetingServiceImpl implements GreetingService{ private String say; @Override public void sayGreeting() { System.out.println("我说的是:"+say); } /**通过set方法进行赋值*/ public void setSay(String say) { this.say = say; } }
GreetingTest测试类源码:
package cn.csdn.juint; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import cn.csdn.service.GreetingServiceImpl; public class GreetingTest { @Test public void test(){ /**解析applicationContext.xml文件*/ ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml"); /**调用getBean方法获取bean对象 需要强制造型*/ GreetingServiceImpl gsi = (GreetingServiceImpl) ac.getBean("greetingServiceImpl"); /**调用对象相应的方法*/ gsi.sayGreeting(); } }
ApplicationContext.xml文件的配置:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"> <bean id="greetingServiceImpl" class="cn.csdn.service.GreetingServiceImpl"> <property name="say" value="Hello"></property> </bean> </beans>
运行JUnit测试类结果:
我说的是:Hello