How to use dbpedia spotlight docker image?

Question

I'm facing a problem with dbpedia spotlight. I can't seem to connect to the local docker image found here .

I used the command docker pull dbpedia/spotlight-english with docker run -i -p 2222:80 dbpedia/spotlight-english and then checked that the container is running with docker ps . Everything works fine.

After that, I try to query the server by running the curl given in the spotlight documentation :

curl http://0.0.0.0:2222/en/annotate  \
  --data-urlencode "text=President Obama called Wednesday on Congress to extend a tax break
  for students included in last year's economic stimulus package, arguing
  that the policy provides more generous assistance." \
  --data "confidence=0.35"

And the same with the following URLs:

• http://127.0.0.1:2222/en/annotate/
• http://127.0.0.1:2222/en/
• http://127.0.0.1:2222/
• http://0.0.0.0:2222/en/
• http://0.0.0.0:2222/

All I get is curl: (52) Empty reply from server .

What am I not getting here? All help appreciated.

Answer 1

The correct is

curl -X POST \
  http://localhost:2222/rest/annotate \
  -H 'accept: application/json' \
  -H 'content-type: application/x-www-form-urlencoded' \
  --data-urlencode "text=President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance" \
  --data-urlencode "confidence=0.35"

Answer 2

The empty reply error indicates that nothing was listening on your local port 2222. This is caused by the docker command docker run -i -p 2222:80 dbpedia/spotlight-english , in which the Spotlight container's port 2222 is mapped to port 80 on the host machine.

With the correct request syntax, as @Sandro has shared, the example should work on a locally running docker container with the url http://localhost:80/rest/annotate (or by omitting the port number altogether, given that 80 is the default).

Answer 3

To run the docker image of English version:

1. docker run -i -p 2222: 80 dbpedia / spotlight-english spotlight.sh

2. Open the localhost and give the text in the below format: localhost: 2222 / rest / annotate? Text = TextYouWantToAnnotate & confidence = 0.2 & support = 20

Example:

localhost:2222/rest/annotate?text=When I was growing up, my zealously frugal parents refused to buy anything from a bookstore, insisting that the local library had whatever it was we could possibly want to read. Faced with a small child's intensive lobbying for repeated storytelling sessions with a lavishly illustrated picture book, my father would borrow one from the library and photocopy it. I still remember how anything colorful on the page (ie everything) would get transformed into dark blobs, the toner blurring the text and smudging my fingers.&confidence=0.2&support=20