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Enforce custom string converter in HttpMessageConverters
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Prior to this commit, configuring a custom `StringHttpMessageConverter`
would be overwritten when the `registerDefaults()` option is enabled.

Fixes gh-35563
This commit is contained in:
Brian Clozel 2025-10-01 20:18:39 +02:00
parent 56b082dec7
commit d98179e137
2 changed files with 24 additions and 1 deletions
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4
spring-web/src/main/java/org/springframework/http/converter/DefaultHttpMessageConverters.java
View File

@ -247,8 +247,10 @@ class DefaultHttpMessageConverters implements HttpMessageConverters {
void detectMessageConverters() {
this.byteArrayMessageConverter = new ByteArrayHttpMessageConverter();
this.stringMessageConverter = new StringHttpMessageConverter();
if (this.stringMessageConverter == null) {
this.stringMessageConverter = new StringHttpMessageConverter();
}
if (this.jsonMessageConverter == null) {
if (JACKSON_PRESENT) {
this.jsonMessageConverter = new JacksonJsonHttpMessageConverter();

21
spring-web/src/test/java/org/springframework/http/converter/DefaultHttpMessageConvertersTests.java
View File

@ -177,6 +177,16 @@ class DefaultHttpMessageConvertersTests {
assertThat(customConverter).isEqualTo(jacksonConverter);
}
@Test
void shouldOverrideStringConverters() {
var stringConverter = new StringHttpMessageConverter();
var converters = HttpMessageConverters.forClient().registerDefaults()
.stringMessageConverter(stringConverter).build();
var actualConverter = findMessageConverter(StringHttpMessageConverter.class, converters);
assertThat(actualConverter).isEqualTo(stringConverter);
}
@Test
void shouldConfigureConverter() {
var customConverter = new CustomHttpMessageConverter();
@ -271,6 +281,17 @@ class DefaultHttpMessageConvertersTests {
assertThat(customConverter).isEqualTo(jacksonConverter);
}
@Test
void shouldOverrideStringConverters() {
var stringConverter = new StringHttpMessageConverter();
var converters = HttpMessageConverters.forServer().registerDefaults()
.stringMessageConverter(stringConverter).build();
var actualConverter = findMessageConverter(StringHttpMessageConverter.class, converters);
assertThat(actualConverter).isEqualTo(stringConverter);
}
@Test
void shouldConfigureConverter() {
var customConverter = new CustomHttpMessageConverter();