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SPR-8867 Fix issue with Content-Length header and UTF-8 charset.

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The AbstractHttpMessageConverter was using the requested Content-Type
rather than the actual response Content-Type to determine the length
of the content. This can lead to a problem when a controller returns
a ResponseEntity with a Content-Type header that ignores (overrides)
the requested Content-Type. The fix ensures that actual response 
Content-Type is the one used both to write to the response and to 
determine the length of the content.
This commit is contained in:
Rossen Stoyanchev
2011-11-28 18:42:57 +00:00
parent aa7fcb5431
commit a9a068e678
3 changed files with 22 additions and 3 deletions
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2
org.springframework.web/src/main/java/org/springframework/http/converter/AbstractHttpMessageConverter.java
View File

@@ -173,7 +173,7 @@ public abstract class AbstractHttpMessageConverter<T> implements HttpMessageConv
}
}
if (headers.getContentLength() == -1) {
Long contentLength = getContentLength(t, contentType);
Long contentLength = getContentLength(t, headers.getContentType());
if (contentLength != null) {
headers.setContentLength(contentLength);
}

18
org.springframework.web/src/test/java/org/springframework/http/converter/StringHttpMessageConverterTests.java
View File

@@ -85,4 +85,22 @@ public class StringHttpMessageConverterTests {
outputMessage.getHeaders().getContentLength());
assertFalse("Invalid accept-charset", outputMessage.getHeaders().getAcceptCharset().isEmpty());
}
// SPR-8867
@Test
public void writeOverrideRequestedContentType() throws IOException {
Charset utf8 = Charset.forName("UTF-8");
MediaType requestedContentType = new MediaType("text", "html");
MockHttpOutputMessage outputMessage = new MockHttpOutputMessage();
MediaType contentType = new MediaType("text", "plain", utf8);
outputMessage.getHeaders().setContentType(contentType);
String body = "H\u00e9llo W\u00f6rld";
converter.write(body, requestedContentType, outputMessage);
assertEquals("Invalid result", body, outputMessage.getBodyAsString(utf8));
assertEquals("Invalid content-type", contentType, outputMessage.getHeaders().getContentType());
assertEquals("Invalid content-length", body.getBytes(utf8).length,
outputMessage.getHeaders().getContentLength());
assertFalse("Invalid accept-charset", outputMessage.getHeaders().getAcceptCharset().isEmpty());
}
}