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Add HEAD support in MVC/WebFlux Resource handling

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This commit introduces explicit HEAD support in Spring
MVC's ResourceHttpRequestHandler and WebFlux's ResourceWebHandler,
adding just headers but no body.

Closes gh-28291
This commit is contained in:
Arjen Poutsma
2022-04-07 13:51:21 +02:00
parent df5e3f79e1
commit 9adfa5e8b0
6 changed files with 54 additions and 19 deletions
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15
spring-webflux/src/main/java/org/springframework/web/reactive/resource/ResourceWebHandler.java
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@@ -438,10 +438,17 @@ public class ResourceWebHandler implements WebHandler, InitializingBean {
// Content phase
ResourceHttpMessageWriter writer = getResourceHttpMessageWriter();
Assert.state(writer != null, "No ResourceHttpMessageWriter");
return writer.write(Mono.just(resource),
null, ResolvableType.forClass(Resource.class), mediaType,
exchange.getRequest(), exchange.getResponse(),
Hints.from(Hints.LOG_PREFIX_HINT, exchange.getLogPrefix()));
if (HttpMethod.HEAD == httpMethod) {
writer.addHeaders(exchange.getResponse(), resource, mediaType,
Hints.from(Hints.LOG_PREFIX_HINT, exchange.getLogPrefix()));
return exchange.getResponse().setComplete();
}
else {
return writer.write(Mono.just(resource),
null, ResolvableType.forClass(Resource.class), mediaType,
exchange.getRequest(), exchange.getResponse(),
Hints.from(Hints.LOG_PREFIX_HINT, exchange.getLogPrefix()));
}
}
catch (IOException ex) {
return Mono.error(ex);