Java进阶知识16 Spring创建IOC容器的两种方式

1、直接得到 IOC 容器对象  

 ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");

封装起来:

 1 public class ApplicationContextUtil {
 2     private static ApplicationContext applicationContext = null;
 3     public ApplicationContextUtil(){  
 4         //无参构造器,可以不用写
 5     }
 6     
 7     static{
 8         applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
 9     }
10     
11     public ApplicationContext getApplicationContext() {
12         return applicationContext;
13     }

使用时,直接用类名.方法调用即可:ApplicationContextUtil.ApplicationContextUtil();

 

2、通过工厂类得到 IOC 容器创建的对象  

1 Resource resource = new ClassPathResource("applicationContext.xml");
2 BeanFactory factory = new XmlBeanFactory(resource);

封装起来:

 1 public class ApplicationContextFactoryUtil {
 2     private static BeanFactory beanFactory = null;
 3     public ApplicationContextFactoryUtil(){
 4         
 5     }
 6     
 7     static{
 8         Resource resource = new ClassPathResource("applicationContext.xml");
 9         beanFactory = new XmlBeanFactory(resource);
10     }
11     
12     public BeanFactory getBeanFactory() {
13         return beanFactory;
14     }
15 }

使用时,直接用类名.方法调用即可:ApplicationContextFactoryUti.getBeanFactory();

 

 

 

 

 

 

原创作者:DSHORE

作者主页:http://www.cnblogs.com/dshore123/

原文出自:https://www.cnblogs.com/dshore123/p/11682126.html

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posted @ 2019-10-16 01:10  DSHORE  阅读(...)  评论(... 编辑 收藏