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POSpring 3.0 HEAD Requests
 

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    <p>recently we moved to spring 3.0 Controller handling like this:</p> <pre><code>@Controller public class MyController { @RequestMapping(method = RequestMethod.POST) protected String onSubmit ( Form form, Errors errors) { // handle POST } @RequestMapping(method = RequestMethod.GET) protected void getForm ( Form form ) { // handle GET } } </code></pre> <p>Now we are getting lots of Exceptions in our logs because of HEAD Requests.</p> <pre><code>org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'HEAD' not supported at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodResolver.resolveHandlerMethod(AnnotationMethodHandlerAdapter.java:621) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:422) at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:415) ... </code></pre> <p>I would like to support HEAD Requests the same way like GET Requests, but obeying the HTTP reference of course:</p> <blockquote> <p>The HEAD method is identical to GET except that the server MUST NOT<br> return a message-body in the response. The metainformation contained in the HTTP headers in response to a HEAD request SHOULD be identical to the information sent in response to a GET request. This method can be used for obtaining metainformation about the entity implied by the request without transferring the entity-body itself. This method is often used for testing hypertext links for validity, accessibility, and recent modification. <a href="http://www.ietf.org/rfc/rfc2616.txt" rel="nofollow noreferrer">http://www.ietf.org/rfc/rfc2616.txt</a></p> </blockquote> <p>Does anybody has an elegant solution or is there even a spring solution out-of-the-box?</p> <p>I searched the web but did not find any answers to this.</p>
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    1. COWhat is making the HEAD requests? Could this be a mis-configuration on the client or client side code (Javascript)? I am asking because usually HEAD is meant to check for updates to the page (i.e. Cache-Control / LastModified headers) so the browser can update is necessary.
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    2. COPycURL does a request method = head for doing gets. Usually, I have found that this is very normal for lot search engines like : oneriot.com, ask.com etc..
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    3. COwho cares which tool is making HEAD Request. It is a valid HTTP Request and many browser are doing it actually (checking bookmarks or whatever).
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