java.lang.ClassNotFoundException: AnnotationBridge

[aherriau]

Hi,

I want to use the stanford-core-nlp gem in a rails application. So, I followed the README file instructions :

• I installed the stanford-core-nlp gem and put it in the Gemfile
• I downloaded and put the contents of Stanford CoreNLP version 3.5.0 (http://nlp.stanford.edu/software/stanford-corenlp-full-2014-10-31.zip) in the bin/ folder of the gem
• I downloaded and put the contents of the full Stanford Tagger version 3.5.0 (http://nlp.stanford.edu/software/stanford-postagger-full-2014-10-26.zip) in the bin/taggers/ folder of the gem
• I downloaded and put the bridge.jar file (https://github.com/louismullie/stanford-core-nlp/blob/master/bin/bridge.jar) in the bin/ folder of the gem

But when i want to use the gem and write in a rails controller file :
pipeline = StanfordCoreNLP.load(:pos)

I have this error :
java.lang.ClassNotFoundException: AnnotationBridge

But I can see the AnnotationBridge.java file in the bin/ folder of the gem ...
I don't know how or where I can specify the path ...
Any help ?

Thank you !

[tayeb83]

Hi,
Probably the AnnotationBridge.java and .class are not found.

[guitassinari]

I'm having the same problem here. @aherriau Were you able to solve this?

[guitassinari]

Just in case someone faces the same problem:

My case was that I downloaded the bridge.jar from GitHub using wget as I was creating a Dockerfile to create the whole Stanford CoreNLP environment for my application.

The problem is that the wget was actually downloading GitHub's HTML page as bridge.jar. Without bridge.jar BindIt/RJB couldn't load AnnotationBridge, obviously.

The solution was downloading bridge.jar manually and altering my Dockerfile accordingly.

Hope it helps someone.