\n in form model when using Jetty 12 client and multipart/form-data #31361
Description
Hello,
I'm using Jetty 12.0.1 and observe the control character \r in my populated model attribute. With Jetty I have this controller:
@RestController public class FormSubmissionController { @PostMapping(path = "/", consumes = MediaType.MULTIPART_FORM_DATA_VALUE, produces = MediaType.APPLICATION_JSON_VALUE) public OutputForm greetingSubmit(@ModelAttribute InputForm form) { return new OutputForm(form.firstName, form.lastName); } public record InputForm(String firstName, String lastName) { } public record OutputForm(String firstName, String lastName) { } }and i expect this test to pass:
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) class JettyFormSubmissionApplicationTests { @Autowired private TestRestTemplate testRestTemplate; @Test void test() { MultiValueMap<String, String> formData = new LinkedMultiValueMap<>(); formData.add("firstName", "first-name"); formData.add("lastName", "last-name"); HttpHeaders headers = new HttpHeaders(); headers.add("Content-Type", MediaType.MULTIPART_FORM_DATA_VALUE); RequestEntity<?> requestEntity = new RequestEntity<>(formData, headers, HttpMethod.POST, URI.create("/")); ResponseEntity<FormSubmissionController.OutputForm> result = this.testRestTemplate.exchange(requestEntity, FormSubmissionController.OutputForm.class); assertThat(result.getBody().firstName()).isEqualTo("first-name"); assertThat(result.getBody().lastName()).isEqualTo("last-name"); } }This fails with Jetty 12, giving me this error message:
org.opentest4j.AssertionFailedError: expected: "last-name" but was: " last-name" With Jetty 11.0.15, it works.
I have prepared a small reproducer. You can switch back to Jetty 11 by editing the build.gradle, i've put some comments in.