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Retain default order in HttpMessageConverters

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The original fix for gh-1293 (commit 05e6af23) caused test failures due
to the fact that Spring Boot's MappingJackson2HttpMessageConverter was
added before Spring's default StringHttpMessageConverter.

This commit changes the HttpMessageConverters logic so that additional
converts are added just before any default converter of the same type.
This allows additional converters to be added whilst still retaining
the sensible ordering of the default converters.

Fixes gh-1293
This commit is contained in:
Phillip Webb
2014-07-28 15:31:46 -07:00
parent 05e6af23cf
commit 5e1552b718
2 changed files with 42 additions and 22 deletions
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39
spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/HttpMessageConvertersTests.java
View File

@@ -34,6 +34,7 @@ import org.springframework.http.converter.xml.SourceHttpMessageConverter;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
@@ -65,27 +66,35 @@ public class HttpMessageConvertersTests {
}
@Test
public void overrideExistingConverter() {
MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
HttpMessageConverters converters = new HttpMessageConverters(converter);
assertTrue(converters.getConverters().contains(converter));
int count = 0;
for (HttpMessageConverter<?> httpMessageConverter : converters) {
if (httpMessageConverter instanceof MappingJackson2HttpMessageConverter) {
count++;
public void addBeforeExistingConverter() {
MappingJackson2HttpMessageConverter converter1 = new MappingJackson2HttpMessageConverter();
MappingJackson2HttpMessageConverter converter2 = new MappingJackson2HttpMessageConverter();
HttpMessageConverters converters = new HttpMessageConverters(converter1,
converter2);
assertTrue(converters.getConverters().contains(converter1));
assertTrue(converters.getConverters().contains(converter2));
List<MappingJackson2HttpMessageConverter> httpConverters = new ArrayList<MappingJackson2HttpMessageConverter>();
for (HttpMessageConverter<?> candidate : converters) {
if (candidate instanceof MappingJackson2HttpMessageConverter) {
httpConverters.add((MappingJackson2HttpMessageConverter) candidate);
}
}
// The existing converter is still there, but with a lower priority
assertEquals(2, count);
assertEquals(0, converters.getConverters().indexOf(converter));
assertEquals(3, httpConverters.size());
assertEquals(0, httpConverters.indexOf(converter1));
assertEquals(1, httpConverters.indexOf(converter2));
assertNotEquals(0, converters.getConverters().indexOf(converter1));
}
@Test
public void addNewConverter() {
HttpMessageConverter<?> converter = mock(HttpMessageConverter.class);
HttpMessageConverters converters = new HttpMessageConverters(converter);
assertTrue(converters.getConverters().contains(converter));
assertEquals(converter, converters.getConverters().get(0));
public void addNewConverters() {
HttpMessageConverter<?> converter1 = mock(HttpMessageConverter.class);
HttpMessageConverter<?> converter2 = mock(HttpMessageConverter.class);
HttpMessageConverters converters = new HttpMessageConverters(converter1,
converter2);
assertTrue(converters.getConverters().contains(converter1));
assertEquals(converter1, converters.getConverters().get(0));
assertEquals(converter2, converters.getConverters().get(1));
}
}