MockHttpServletResponse setIntHeader throws Exception when passed an int value for 'Content-length' [SPR-14016]

[spring-projects-issues]

Chris Tosspon opened SPR-14016 and commented

Using Spring 4.1.8.RELEASE, testing a controller method with a response.setIntHeader('Content-length', 5) throws the following Exception

java.lang.Integer cannot be cast to java.lang.String
java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
	at org.springframework.mock.web.MockHttpServletResponse.setSpecialHeader(MockHttpServletResponse.java:513)

As it seems to be a valid use case to manually set a Content-length header with an integer, the cast of the Object value to String type inside the setSpecialHeader method should be conditional.

setContentLength(Integer.parseInt((String) value));

I have supplied a referenceURL with an example app/test case that shows the unexpected behavior. It's a gradle/grails project that can be run with ./gradlew test

---

Affects: 4.1.8

Reference URL: https://github.com/cTwospoons/mock-http-response-int-header-exception

Issue Links:

• MockHttpServletResponse.setIntHeader throws exception for 'Content-Length' header [SPR-13752] #18325 MockHttpServletResponse.setIntHeader throws exception for 'Content-Length' header ("duplicates")

[spring-projects-issues]

Juergen Hoeller commented

This is a duplicate of #18325 which has been fixed for 4.2.4 and 4.1.9 already.

[spring-projects-issues]

Chris Tosspon commented

Sorry for the duplicate issue. :)