GH-2956 Fix assertion for multiple binders

Resolves #2956
spring-cloud · Jun 4, 2024 · d6550ed · d6550ed
1 parent 7c20624
commit d6550ed
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/...m/src/main/java/org/springframework/cloud/stream/binder/AbstractMessageChannelBinder.java b/...m/src/main/java/org/springframework/cloud/stream/binder/AbstractMessageChannelBinder.java
@@ -267,8 +267,8 @@ private String resolveFromDefaultBinder() {
 		if (binderTypes.entrySet().size() > 1 && getBindingServiceProperties().getDefaultBinder() != null) {
 			return getBindingServiceProperties().getDefaultBinder();
 		}
-		Assert.isTrue(binderTypes.entrySet().size() == 1, "More than one binder types found, but no binder specified on the binding");
-		return binderTypes.keySet().iterator().next();
+		Assert.isTrue(binderTypes.entrySet().size() <= 1, "More than one binder types found, but no binder specified on the binding");
+		return (binderTypes.entrySet().size() < 1) ? null : binderTypes.keySet().iterator().next();
 	}
 
 	/**