If you annotate any parameter in a @InitBinder method, it fails at runtime. [SPR-8946]

[spring-projects-issues]

Ulon opened SPR-8946 and commented

Given the following init binder method:

@InitBinder()
protected void initBinder(WebDataBinder binder) {
    .....
}

if you annotate the binder parameter with, let's say, @Nonnull annotation (very useful for IDE inspection or unit testing) spring MVC is not capable to correctly resolve the parameter

@InitBinder()
protected void initBinder(@Nonnull WebDataBinder binder) {
    .....
}

Exception:

java.lang.IllegalStateException: No suitable resolver for argument [0] [type=org.springframework.web.bind.WebDataBinder]

---

Affects: 3.1.1

Referenced from: commits 03d6350, 2295372

[spring-projects-issues]

Rossen Stoyanchev commented

The presence of annotations on the WebDataBinder argument should not have any effect. Does it work without the annotation? I assume it does in which case consider reproducing the issue by following these instructions. What version of Spring do you have? Attaching a more complete stack trace would also be helpful.

[spring-projects-issues]

Rossen Stoyanchev commented

This was indeed an issue just as described.