[Relearn Spring] 3 Resource

1. ‘Resource’ is actually a more powerful version of java.net.URL.

    What’s more, Spring suggests you use it as a generic utility class, even without Spring.

2. Built-in Implementations.

    a.UrlResource

    b.ClasspathResource

    c.FileSystemResource

    d.ServletContextResource

    e.InputStreamResource

    f.ByteArrayResource