Jersey REST The ResourceConfig instance does not contain any root resource classes [duplicate]

Answer 1

I had the same problem. Solved it by fixing in the web.xml the param-value under init-param tag. By default, Eclipse had set in the web.xml the name of the project into display-name. That shall not be copied to the param-value, but the Java package.

  
    com.sun.jersey.config.property.packages
    com.test.demo
     

Hope this helps.