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Support for reactive controller @InitBinder methods

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Issue: SPR-14543
This commit is contained in:
Rossen Stoyanchev
2016-10-31 16:08:28 +02:00
parent 0b76b6d7e9
commit 3da0295c12
12 changed files with 559 additions and 94 deletions
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19
spring-web/src/main/java/org/springframework/web/method/annotation/InitBinderDataBinderFactory.java
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@@ -39,12 +39,15 @@ public class InitBinderDataBinderFactory extends DefaultDataBinderFactory {
private final List<InvocableHandlerMethod> binderMethods;
/**
* Create a new instance.
* @param binderMethods {@code @InitBinder} methods, or {@code null}
* @param initializer for global data binder intialization
*/
public InitBinderDataBinderFactory(List<InvocableHandlerMethod> binderMethods, WebBindingInitializer initializer) {
public InitBinderDataBinderFactory(List<InvocableHandlerMethod> binderMethods,
WebBindingInitializer initializer) {
super(initializer);
this.binderMethods = (binderMethods != null) ? binderMethods : new ArrayList<>();
}
@@ -61,20 +64,20 @@ public class InitBinderDataBinderFactory extends DefaultDataBinderFactory {
if (isBinderMethodApplicable(binderMethod, binder)) {
Object returnValue = binderMethod.invokeForRequest(request, null, binder);
if (returnValue != null) {
throw new IllegalStateException("@InitBinder methods should return void: " + binderMethod);
throw new IllegalStateException(
"@InitBinder methods should return void: " + binderMethod);
}
}
}
}
/**
* Return {@code true} if the given {@code @InitBinder} method should be
* invoked to initialize the given WebDataBinder.
* <p>The default implementation checks if target object name is included
* in the attribute names specified in the {@code @InitBinder} annotation.
* Whether the given {@code @InitBinder} method should be used to initialize
* the given WebDataBinder instance. By default we check the attributes
* names of the annotation, if present.
*/
protected boolean isBinderMethodApplicable(HandlerMethod initBinderMethod, WebDataBinder binder) {
InitBinder annot = initBinderMethod.getMethodAnnotation(InitBinder.class);
protected boolean isBinderMethodApplicable(HandlerMethod binderMethod, WebDataBinder binder) {
InitBinder annot = binderMethod.getMethodAnnotation(InitBinder.class);
Collection<String> names = Arrays.asList(annot.value());
return (names.size() == 0 || names.contains(binder.getObjectName()));
}