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Resolve property-dependent parameter names for exception messages

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Prior to this commit when a required parameter defined as a property or
expression placeholder was missing, the exception thrown would refer to
the placeholder instead of the resolved name.

This change covers messaging handlers and web controllers, both blocking
and reactive. It also fixes the error message when handling null values
for non-required parameters, as well as in cases that need conversion.

See gh-32323
Closes gh-32462
This commit is contained in:
Andrea Mauro
2024-03-09 10:45:01 +01:00
committed by Simon Baslé
parent 5698191ba0
commit 458c30cb63
9 changed files with 234 additions and 19 deletions
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8
spring-webflux/src/main/java/org/springframework/web/reactive/result/method/annotation/AbstractNamedValueArgumentResolver.java
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@@ -120,7 +120,7 @@ public abstract class AbstractNamedValueArgumentResolver extends HandlerMethodAr
return Mono.justOrEmpty(arg);
})
.switchIfEmpty(getDefaultValue(
namedValueInfo, parameter, bindingContext, model, exchange));
namedValueInfo, resolvedName.toString(), parameter, bindingContext, model, exchange));
}
/**
@@ -222,7 +222,7 @@ public abstract class AbstractNamedValueArgumentResolver extends HandlerMethodAr
/**
* Resolve the default value, if any.
*/
private Mono<Object> getDefaultValue(NamedValueInfo namedValueInfo, MethodParameter parameter,
private Mono<Object> getDefaultValue(NamedValueInfo namedValueInfo, String resolvedName, MethodParameter parameter,
BindingContext bindingContext, Model model, ServerWebExchange exchange) {
return Mono.fromSupplier(() -> {
@@ -234,10 +234,10 @@ public abstract class AbstractNamedValueArgumentResolver extends HandlerMethodAr
value = resolveEmbeddedValuesAndExpressions(namedValueInfo.defaultValue);
}
else if (namedValueInfo.required && !parameter.isOptional()) {
handleMissingValue(namedValueInfo.name, parameter, exchange);
handleMissingValue(resolvedName, parameter, exchange);
}
if (!hasDefaultValue) {
value = handleNullValue(namedValueInfo.name, value, parameter.getNestedParameterType());
value = handleNullValue(resolvedName, value, parameter.getNestedParameterType());
}
if (value != null || !hasDefaultValue) {
value = applyConversion(value, namedValueInfo, parameter, bindingContext, exchange);