spring thymeleaf static content HTTP 405

Question

I am working with spring boot an thymeleaf and try to get an image from the application.

   <img th:src="@{/static/img/png-test.png}"/>

this is my tag in my template file. which gets rendered to

<img src="/static/img/png-test.png">

I already tried to add my own ResourceHandler

  @Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
}

which seems to work because on startup I get the following message

2017-08-04 20:16:02.926  INFO 15234 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/static/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

but there is no image showing up inside the browser. instead I get the following error in the browser console

GET http://localhost:8080/static/img/png-test.png 405 ()

Spring logs the following

2017-08-04 19:59:20.265  WARN 14705 --- [nio-8080-exec-5] o.s.web.servlet.PageNotFound             : Request method 'GET' not supported

EDIT: Could it be a problem that i added this to my build.gradle file

jar {
    from('src/main/') {
        include 'static/'

    }
}

because otherwise gradle never put the static folder into the jar

EDIT: I found out what is needed to reproduce the failure

I have a function inside my controller which looks like this

@RequestMapping(name = "/", method = RequestMethod.POST)
public String func(@RequestParam(name = "var1") String var1, @RequestParam(name = "var2") String var2){
    return "templatename";
}

When I uncomment the function I am able to receive static content. at least method not allowed makes sense now. because it is expecting a POST.

So how can I fix this without having to remap the function?

Answer 1

I just noticed that i was just stupid. i wrote

@RequestMapping(name = "/", method = RequestMethod.POST)

instead of

@RequestMapping(value = "/", method = RequestMethod.POST)

over a function in my controller. which mapped this function to /** So my requests to any static content was routed to this function which only accepted the POST method.

But still a big thnx to @Kirby