This commit revisit the build configuration to enforce the following:
* A single Java toolchain is used consistently with a recent Java
version (here, Java 23) and language level
* the main source is compiled with the Java 17 "-release" target
* Multi-Release classes are compiled with their respective "-release"
target. For now, only "spring-core" ships Java 21 variants.
Closes gh-34507
Prior to this commit, `MockHttpServletResponse` would only support
adding a `Content-Language` once. Adding multiple header values would
always replace the content-language property in the response and the
entire header value.
This commit ensures that this behavior is supported.
Fixes gh-34488
Prior to this commit, `SimpleKey` would be used in Spring Framework's
caching support and its `hashCode` value would be used to efficiently
store this key in data structures.
While the current hashcode strategy works, the resulting values don't
spread well enough when input keys are sequential (which is often the
case). This can have negative performance impacts, depending on the
data structures used by the cache implementation.
This commit improves the `hashCode` function with a mixer to better
spread the hash values. This is using the mixer function from the
MurMur3 hash algorithm.
Closes gh-34483
Prior to this commit, the `DispatcherServlet` would try and reset the
response buffer in case of errors, if the response is not committed
already. This allows for more flexible error handling, even if the
response was being handled already when it errored.
Resetting the response buffer clears the body but leaves HTTP response
headers intact. This is done on purpose as to not clear headers
previously added by Servlet Filters. By leaving in place some headers
like "Content-Type", this does not take into account the fact that the
response body was cleared and that error handling will perform another
round of content negotiation. While this isn't a problem for some
Servlet containers which enforce a single "Content-Type" header value,
this can cause multiple/duplicate values for some others.
This commit ensures that the "Content-Type" response header is removed
at the same time as we clear the "producible media types" attribute:
another pass of content negotiation will be performed for error
handling.
Fixes gh-34366
This commit revisits the behavior of our `MockHttpServletResponse`
implementation with the javadoc clarifications applied in Servlet 6.1.
Prior to this change, adding or setting an HTTP response header with a
`null` name or value would not have the expected behavior:
* a `null` name should have no effect instead of throwing exceptions
* a `null` value when setting a header effectively removes the entry
from the response headers
Also, this commit ensures that `IllegalStateException` are thrown if
`getWriter` is called after a previous `getOutputStream` (and vice
versa).
Closes gh-34467
Prior to this commit, calling `setHeader` on the response wrapper would
have a separate code path for the "Content-Length" header. This did not
support calls with `null` values and would result in an exception.
This commit ensures that the cached content length value is reset in
this case and that the call is forwarded properly to the superclass.
Fixes gh-34460
Prior to this commit, `MockHttpServletResponse#setHeader` would not
remove the header entry when given a `null` value, as documented in the
Servlet API.
This commit ensures that this behavior is enforced.
Fixes gh-34464
This commit adds an onRequest() hook to request more data from
the source in order to avoid hung uploads in MultipartParser.
Closes gh-34388
Signed-off-by: Gang Cheng <chenggangpro@gmail.com>
This commit adds missing `@since` tags for formField() and formFields in
MockHttpServletRequestDsl. See gh-34412 related issue.
Closes gh-34448
Signed-off-by: Johnny Lim <izeye@naver.com>
