Dropwizard + Halbuilder message body writer error

[ni...@nimamontazeri.com]

I'm using dropwizard to build a Restful service. I'm using halbuilder to create json+hal media type. My resource is returning a representation with a few links on a get request. It works perfectly fine on my dev environment but when I deploy my service to heroku I get below exception:

 A message body writer for Java class java.lang.String, and Java type class java.lang.String, and MIME media type application/hal+json was not found.

2015-01-06T16:40:01.054760+00:00 app[web.1]: */* ->
2015-01-06T16:40:01.054762+00:00 app[web.1]:   com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider

[Mark Derricutt]

On 7 Jan 2015, at 8:19, ni...@nimamontazeri.com wrote:

I'm using dropwizard to build a Restful service. I'm using halbuilder to
create json+hal media type. My resource is returning a representation with
a few links on a get request. It works perfectly fine on my dev environment
but when I deploy my service to heroku I get below exception:

A message body writer for Java class java.lang.String, and Java type class
java.lang.String, and MIME media type application/hal+json was not found.

2015-01-06T16:40:01.054760+00:00 app[web.1]: / ->

2015-01-06T16:40:01.054762+00:00 app[web.1]: com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider

I've not actually used Dropwizard before, but it sounds like it might be using JAX-RS under the covers, so you might need to also look at the halbuilder-jaxrs module, are you returning a String from your resource methods or a Representation?

Not sure why this would work in your dev and not on heroku, unless the way the application is being started is different somehow?

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Mark Derricutt
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