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Match HandlerMapping lookup to bean signature

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This commit makes sure to initialize any HandlerMapping defined in the
context when searching for resource handlers. Previously, the detection
algorithm was looking up for `SimpleUrlHandlerMapping` while the
declared target type in WebMvcConfigurationSupport is HandlerMapping.
If the application uses lazy initialization, the lookup algorithm would
not force that bean to be initialized.

Closes gh-25488
This commit is contained in:
Stéphane Nicoll
2023-11-22 16:00:39 +01:00
parent 95e250d4bd
commit 0785256b2f
2 changed files with 21 additions and 28 deletions
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23
spring-webflux/src/main/java/org/springframework/web/reactive/resource/ResourceUrlProvider.java
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@@ -16,7 +16,6 @@
package org.springframework.web.reactive.resource;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
@@ -31,11 +30,11 @@ import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.annotation.AnnotationAwareOrderComparator;
import org.springframework.http.server.PathContainer;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.lang.Nullable;
import org.springframework.web.reactive.handler.SimpleUrlHandlerMapping;
import org.springframework.web.reactive.HandlerMapping;
import org.springframework.web.reactive.handler.AbstractUrlHandlerMapping;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.util.pattern.PathPattern;
import org.springframework.web.util.pattern.PathPatternParser;
@@ -100,16 +99,14 @@ public class ResourceUrlProvider implements ApplicationListener<ContextRefreshed
}
private void detectResourceHandlers(ApplicationContext context) {
Map<String, SimpleUrlHandlerMapping> beans = context.getBeansOfType(SimpleUrlHandlerMapping.class);
List<SimpleUrlHandlerMapping> mappings = new ArrayList<>(beans.values());
AnnotationAwareOrderComparator.sort(mappings);
mappings.forEach(mapping ->
mapping.getHandlerMap().forEach((pattern, handler) -> {
if (handler instanceof ResourceWebHandler resourceHandler) {
this.handlerMap.put(pattern, resourceHandler);
}
}));
context.getBeanProvider(HandlerMapping.class).orderedStream()
.filter(AbstractUrlHandlerMapping.class::isInstance)
.map(AbstractUrlHandlerMapping.class::cast)
.forEach(mapping -> mapping.getHandlerMap().forEach((pattern, handler) -> {
if (handler instanceof ResourceWebHandler resourceHandler) {
this.handlerMap.put(pattern, resourceHandler);
}
}));
if (this.handlerMap.isEmpty()) {
logger.trace("No resource handling mappings found");