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Skip "data:" lines without content

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Closes gh-27923
This commit is contained in:
Juergen Hoeller
2022-01-12 16:35:42 +01:00
parent cf5b86369d
commit 6b3052200a
2 changed files with 27 additions and 23 deletions
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22
spring-web/src/main/java/org/springframework/http/codec/ServerSentEventHttpMessageReader.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2021 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -42,6 +42,7 @@ import org.springframework.lang.Nullable;
*
* @author Sebastien Deleuze
* @author Rossen Stoyanchev
* @author Juergen Hoeller
* @since 5.0
*/
public class ServerSentEventHttpMessageReader implements HttpMessageReader<Object> {
@@ -140,22 +141,23 @@ public class ServerSentEventHttpMessageReader implements HttpMessageReader<Objec
private Object buildEvent(List<String> lines, ResolvableType valueType, boolean shouldWrap,
Map<String, Object> hints) {
ServerSentEvent.Builder<Object> sseBuilder = shouldWrap ? ServerSentEvent.builder() : null;
ServerSentEvent.Builder<Object> sseBuilder = (shouldWrap ? ServerSentEvent.builder() : null);
StringBuilder data = null;
StringBuilder comment = null;
for (String line : lines) {
if (line.startsWith("data:")) {
data = (data != null ? data : new StringBuilder());
if (line.charAt(5) != ' ') {
data.append(line, 5, line.length());
int length = line.length();
if (length > 5) {
int index = (line.charAt(5) != ' ' ? 5 : 6);
if (length > index) {
data = (data != null ? data : new StringBuilder());
data.append(line, index, line.length());
data.append('\n');
}
}
else {
data.append(line, 6, line.length());
}
data.append('\n');
}
if (shouldWrap) {
else if (shouldWrap) {
if (line.startsWith("id:")) {
sseBuilder.id(line.substring(3).trim());
}