blank response from Tomcat when using REST webservices

Hello,

I'm using marvin4js and now I want to connect it to webservices deployed in tomcat. Tomcat is behind Apache connected through ajp . Both marvin and webservices have their licences in right places.

When I try to follow your example:

https://marvin4js.chemaxon.com/marvin4js-latest/examples/example-molconvert.html

to convert structure from editor to smiles, I always get the blank response(200 but blank), not a json with data. 

 

When I go to /webservices/rest-v0/util/calculate/molExport in my browser I get 

{"errorCode":3,"errorMessage":"structure cannot be null!","rootCause":"java.lang.IllegalArgumentException"} 

which is fine, because I'm not sending any additional data, at least I know, the request is targeting right place.

 

When I tried to deploy simple hello world example to my tomcat and view it through apache, it is also fine. So the problem is probably not in apache to tomcat ajp-connection.

All the logs seems to be fine, there' nothing special in there.

Any help would be really appreciated

Martin

Hi Martin,

 

    The base URL of the WS can be used for testing: webservices/rest-v0. This should send you a message contains licese information too. We have seen similar problems in two cases: automatic http to https redirect in the apace and incorrect tomcat/java vendor/jvm setting. Is the major version of your tomcat "7"? Do you use oracle JVM? Have you set up the JVM options according to:

https://restdemo.chemaxon.com/docs/installationguide.html 

 

You can test the molExport through the /webservices#molExport url.

 

Please, let me know whether this help!

hello gguta,

"The base URL of the WS can be used for testing: webservices/rest-v0. This should send you a message contains licese information too"

When I go to this URL I also see a blank response..

"Have you set up the JVM options according to: https://restdemo.chemaxon.com/docs/installationguide.html "

Unfortunatelly, I wasn't able to find this document, when I tried to install it. I'm on CentOs 6.4.

java version "1.7.0_45"

OpenJDK Runtime Environment (rhel-2.4.3.2.el6_4-x86_64 u45-b15)

OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)

Is the major version of your tomcat "7"?

No, I'm running distributional tomcat 6. 

You can test the molExport through the /webservices#molExport url.

/webservices/#molExport is just a static site-there is no way I can interact with it (please see attached screenshot)

Do you suggest to try to stick with your guide? Do you think java or version matters? I also have an automatic http to https redirect.

Thank you Martin

Hi Martin!

Please take a look on this forum topic:
https://www.chemaxon.com/forum/ftopic11637.html&highlight= />
Your problem is usage of unsupported version of Tomcat, you'll find soultion proposals in that topic! 


Regards
Peter 

Thank you

everything is working fine now

Martin