Hi Colin,
One of the compromises Ring makes for efficiency is that the body of a
request is an InputStream, rather than a static string or byte array
pre-loaded into memory. Because it's a stream, it can potentially be
consumed by previous middleware.
For some reason you have both wrap-json-body and wrap-json-params in your
stacktrace:
ring.middleware.json$wrap_json_body$fn__1031.invoke(json.clj:19)
ring.middleware.json$wrap_json_params$fn__1035.invoke(json.clj:31)
Both middleware read from the body InputStream, so one of them is going to
fail when you try and read the body twice.
- James
On 4 November 2013 00:20, Colin Yates <[email protected]> wrote:
> Hi all,
>
> I have developed a ring/compojure app which receives and servers JSON.
> All is well in 'lein ring server' but as soon as I do 'lein ring uberwar'
> and deploy it to tomcat 6 or 7 it fails. To be explicit, the app deploys
> and I can view the static resources, but as soon as I issue a JSON POST I
> get the following error:
>
> [code]
> java.io.IOException: Stream closed
> org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:325)
>
> org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:193)
> sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:283)
> sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:325)
> sun.nio.cs.StreamDecoder.read(StreamDecoder.java:177)
> java.io.InputStreamReader.read(InputStreamReader.java:184)
> java.io.BufferedReader.fill(BufferedReader.java:154)
> java.io.BufferedReader.read(BufferedReader.java:175)
> clojure.core$slurp.doInvoke(core.clj:6279)
> clojure.lang.RestFn.invoke(RestFn.java:410)
> ring.middleware.json$read_json.doInvoke(json.clj:12)
> clojure.lang.RestFn.invoke(RestFn.java:423)
> ring.middleware.json$wrap_json_body$fn__1031.invoke(json.clj:19)
> ring.middleware.json$wrap_json_params$fn__1035.invoke(json.clj:31)
> compojure.core$routing$fn__362.invoke(core.clj:107)
> clojure.core$some.invoke(core.clj:2443)
> compojure.core$routing.doInvoke(core.clj:107)
> clojure.lang.RestFn.applyTo(RestFn.java:139)
> clojure.core$apply.invoke(core.clj:619)
> compojure.core$routes$fn__366.invoke(core.clj:112)
> health.servlet$_service$fn__1016.invoke(servlet.clj:1)
> ring.util.servlet$make_service_method$fn__50.invoke(servlet.clj:126)
> health.servlet$_service.invoke(servlet.clj:1)
> health.servlet.service(Unknown Source)
> [/code]
>
> Any help?
>
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