Unable to marshal type "bookmarks.BookmarkResource" about tut-rest HOT 6 CLOSED

For anyone else hitting this error, if you still want to return a true HATEOAS resource (versus a straight-up Collection), change the @RequestMapping on the readBookmarks method to include a produces attribute:

@RequestMapping(method = RequestMethod.GET, produces = {MediaType.APPLICATION_JSON_VALUE, "application/hal+json"})

Don't forget to import import org.springframework.http.MediaType;

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@jflewis I did the tutorial just now and was glad to find this page to solve this issue. The fix of @ziftytodd should be implemented asap.
There are other issues with this tutorial as well, like the pointing to the wrong source code (at the start of the tutorial), the addition of the org.springframework.security.oauth dependency from the beginning, (so the examples don't work but are asking for a username and password), etc...
Very confusing.

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This seems to be related to Resources<BookmarkResource> readBookmarks. Changing this to Collection<BookmarkResource> readBookmarks and returning the list without the resources wrapper seems to fix it for me. I'll close this as its probably something to do with my setup.

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Helped for me too. TNX. A lot of typo I've found in this tutorial. So seems it is correct fix.

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Is this happening for everyone because I've run into the same issue. Should the above fix by @ziftytodd be implemented? Sorry to bring up a 2 year old issue

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It would also be interesting to see how to test methods readSingleBookmark and readBookmarks after using hateoas links...

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