Fix regression in AbstractJackson2Encoder

Closes gh-29274
2022-10-07 18:05:35 +01:00
parent b3afafbf5a
commit 1afc1fc90d
2 changed files with 9 additions and 0 deletions
--- a/spring-web/src/main/java/org/springframework/http/codec/json/AbstractJackson2Encoder.java
+++ b/spring-web/src/main/java/org/springframework/http/codec/json/AbstractJackson2Encoder.java
@@ -198,6 +198,7 @@ public abstract class AbstractJackson2Encoder extends Jackson2CodecSupport imple
 										bufferFactory.join(Arrays.asList(bufferFactory.wrap(prefix), dataBuffer)) :
 										dataBuffer);
 							})
+							.switchIfEmpty(Mono.fromCallable(() -> bufferFactory.wrap(helper.getPrefix())))
 							.concatWith(Mono.fromCallable(() -> bufferFactory.wrap(helper.getSuffix())));
 				}