深入理解Resource，ResourceLoader

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目录

概 述

1.Resource是包装资源的对象，该接口继承inputstreamSource接口是为继承getinputstream方法，打开一个输入流，Resource对象可以是ClassPathResource、FileSystemResource、UrlResource等

2.ResourceLoader接口就是通过getresource方法来new各种resource对象

3.如果需要按某种匹配方式来new resource对象，所以出现ResourcePatternResolver接口，继承ResourceLoad，增加匹配功能

4.ApplicationContext context = new ClassPathXmlApplicationContext(“Beans.xml”);

在ClassPathXmlApplicationContext的构造方法中调用了AbstractApplicationContext的构造方法

在AbstractApplicationContext里创建了一个

private ResourcePatternResolver resourcePatternResolver=new PathMatchingResourcePatternResolver（）

5.AbstractApplicationContext继承了DefaultResourceLoader类

5.AbstractApplicationContext继承了DefaultResourceLoader类

6.PathMatchingResourcePatternResolver的流程如下

小结

参考资料和推荐阅读

1.链接: 参考资料.