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Editorial Team
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Asked: 2026-05-29T11:36:07+00:00

I’m trying to debug a rest/json service that i build using Jersey and Amazon

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I’m trying to debug a rest/json service that i build using Jersey and Amazon AWS. I intend to run it on ElasticBeanstalk.

The project is created using the AWS plugin for eclipse as a new Aws Java Web project. I then downloaded jersey and dumped the jars in WEB-INF/lib.

The runtime error i get is

class “org.codehaus.jackson.JsonProcessingException”‘s signer information does not match >signer information of other classes in the same package

I suspect some sort of clash with aws. If i change the build path order (moving things up and down the list in eclipse->build path->order and export tab) i get other errors. (specifically i can get the jersey to work by moving it up the list but then aws breaks)

I hope someone has done something similar and is able to help 🙂

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1 Answer

  1. Editorial Team

    Simply remove jackson-core-asl-*.jar from your classpath, it’s already part of the AWS SDK.

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