spring课堂第一个案例

最新推荐文章于 2022-11-20 10:32:14 发布

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最新推荐文章于 2022-11-20 10:32:14 发布

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分类专栏：课堂笔记文章标签： spring string class encoding interface

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本文介绍了一个使用Spring框架的IoC容器管理Bean的示例。通过定义接口GreetingService及其实现类GreetingServiceBean，展示了如何通过XML配置文件acceptionContext.xml设置依赖注入，并在AppMain类中通过不同方式获取Bean实例并调用其方法。

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GreetingService:

public interface GreetingService {
public void greetion();
}

GreetingServiceBean:

public class GreetingServiceBean implements GreetingService{
private String greeting;
public void greetion() {
System.out.println(greeting);
}
public void setGreeting(String greeting) {
this.greeting = greeting;
}
}
acceptionContxt.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-2.5.xsd">
  <bean id="greetingServiceBean" class="cn.csdn.service.GreetingServiceBean" >
   <property name="greeting">
    <value>你好！</value>
   </property>

  </bean>


     </beans>
    AppMain:

public class AppMain {

/**不同的方式
* @param args
*/
public static void main(String[] args) {
  /*(1) Resource resource=new FileSystemResource("F:\\spring\\spring01\\src\\acceptionContext.xml");
  BeanFactory factory=new XmlBeanFactory(resource);
  GreetingService greetingService=(GreetingService) factory.getBean("greetingServiceBean");
  greetingService.greetion();*/

  /*(3)*/ApplicationContext context=new FileSystemXmlApplicationContext("F:\\spring\\spring01\\src\\acceptionContext.xml");
  GreetingService greetingService=(GreetingService) context.getBean("greetingServiceBean");
  greetingService.greetion();


  /*(2)BeanFactory factory=new ClassPathXmlApplicationContext("acceptionContext.xml");
  GreetingService greetingService=(GreetingService) factory.getBean("greetingServiceBean");
  greetingService.greetion();*/

  /*(3)ApplicationContext context=new ClassPathXmlApplicationContext("acceptionContext.xml");
  GreetingService greetingService=(GreetingService) context.getBean("greetingServiceBean");
  greetingService.greetion();*/
}