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Change favicon StaticResourceLocation

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Prior to this commit, the `StaticResourceLocation` for favicons would
point to `"/**/favicon.ico"`. This location does not reflect the current
web development landscape, since the png format and size variants are
not supported here. Also, the `"**"` pattern can be costly at runtime
and is deprecated by the new path pattern support in Spring Framework
(see gh-22833).

This commit changes the default locations to `"/favicon.*","/*/icon-*"`,
supporting common use cases such as `"/favicon.ico"`, `"/favicon.png"`
and `"/icons/icon-48x48.png"`.

Closes gh-23126
This commit is contained in:
Brian Clozel
2020-10-23 12:03:32 +02:00
parent e60f26f8cc
commit 5fceb9d5b7
5 changed files with 10 additions and 14 deletions
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spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc
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@@ -2639,13 +2639,6 @@ If either is found, it is automatically used as the welcome page of the applicat
[[boot-features-spring-mvc-favicon]]
==== Custom Favicon
As with other static resources, Spring Boot looks for a `favicon.ico` in the configured static content locations.
If such a file is present, it is automatically used as the favicon of the application.
[[boot-features-spring-mvc-pathmatch]]
==== Path Matching and Content Negotiation
Spring MVC can map incoming HTTP requests to handlers by looking at the request path and matching it to the mappings defined in your application (for example, `@GetMapping` annotations on Controller methods).