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JAX-RS and Jersey web services application error

Hello,
I am using jersey jars
: asm-3.3.1.jar, jersey-bundle-1.14.jar, json.jar, jersey-simple-server-1.8.jar,
Is it i have to use some jars ?
I have added my web-inf/lib folder  and to my classpath

when i run the restful web services  url
http://localhost:8080/CrunchywebServices/crunchify/ctofservice/
getting an error as
HTTP Status 500 - Servlet.init() for servlet Jersey Web Application threw exception
type Exception report

message Servlet.init() for servlet Jersey Web Application threw exception

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet.init() for servlet Jersey Web Application threw exception
      org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
      org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
      org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
      org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
      org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)
      org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
      org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
      java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      java.lang.Thread.run(Unknown Source)


root cause

com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
      com.sun.jersey.server.impl.application.RootResourceUriRules.<init>(RootResourceUriRules.java:99)
      com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1300)
      com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:163)
      com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:769)
      com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:765)
      com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193)
      com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:765)
      com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:760)
      com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:489)
      com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:319)
      com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609)
      com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210)
      com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:374)
      com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:557)
      javax.servlet.GenericServlet.init(GenericServlet.java:160)
      org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
      org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
      org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
      org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
      org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)
      org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
      org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
      java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      java.lang.Thread.run(Unknown Source)

My web.xml

===============================================================
<servlet>
  <servlet-name>Jersey Web Application</servlet-name>
  <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>Jersey Web Application</servlet-name>
  <url-pattern>/crunchify/*</url-pattern>
</servlet-mapping>

=======================================================================
One of the class is

public class CtoFService {
    @GET
    @Produces("application/xml")
    public String convertCtoF() {
 
        Double fahrenheit;
        Double celsius = 36.8;
        fahrenheit = ((celsius * 9) / 5) + 32;
 
        String result = "@Produces(\"application/xml\") Output: \n\nC to F Converter Output: \n\n" + fahrenheit;
        return "<ctofservice>" + "<celsius>" + celsius + "</celsius>" + "<ctofoutput>" + result + "</ctofoutput>" + "</ctofservice>";
    }
 
    @Path("{c}")
    @GET
    @Produces("application/xml")
    public String convertCtoFfromInput(@PathParam("c") Double c) {
        Double fahrenheit;
        Double celsius = c;
        fahrenheit = ((celsius * 9) / 5) + 32;
 
        String result = "@Produces(\"application/xml\") Output: \n\nC to F Converter Output: \n\n" + fahrenheit;
        return "<ctofservice>" + "<celsius>" + celsius + "</celsius>" + "<ctofoutput>" + result + "</ctofoutput>" + "</ctofservice>";
    }
}

Thanks,
0
roy_sanu
Asked:
roy_sanu
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  • 2
1 Solution
 
mccarlIT Business Systems Analyst / Software DeveloperCommented:
You need to tell Jersey where to find your classes, in your web.xml... 
<servlet>
  <servlet-name>Jersey Web Application</servlet-name>
  <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
    <init-param>
      <param-name>com.sun.jersey.config.property.packages</param-name>
      <param-value>your.package.goes.here</param-value>
    </init-param>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>Jersey Web Application</servlet-name>
  <url-pattern>/crunchify/*</url-pattern>
</servlet-mapping>

Open in new window

You need to change that param-value to the package that contains the class "CtoFService". Also I think the URL to access it would be...
http://localhost:8080/CrunchywebServices/crunchify/
0
 
roy_sanuAuthor Commented:
I add my web.xml to

<servlet>
  <servlet-name>Jersey Web Application</servlet-name>
  <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
    <init-param>
      <param-name>com.sun.jersey.config.property.packages</param-name>
      <param-value>com.crunchify.restjersey</param-value>
    </init-param>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>Jersey Web Application</servlet-name>
  <url-pattern>/crunchify/*</url-pattern>
</servlet-mapping>

</web-app>

still the wired error comes


========================
SEVERE: StandardWrapper.Throwable
com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.
      at com.sun.jersey.server.impl.application.RootResourceUriRules.<init>(RootResourceUriRules.java:99)
      at com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1300)
      at com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:163)
      at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:769)
      at com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:765)
      at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193)
      at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:765)
      at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:760)
      at com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:489)
      at com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:319)
      at com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609)
      at com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210)
      at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:374)
      at com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:557)
      at javax.servlet.GenericServlet.init(GenericServlet.java:160)
      at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
      at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1193)
      at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
      at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5123)
      at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5407)
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
      at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
      at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
      at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
      at java.util.concurrent.FutureTask.run(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      at java.lang.Thread.run(Unknown Source)
=========================
0
 
roy_sanuAuthor Commented:
There  was an issue with the jars. i added some more right jars ...well i was guessing on that. it is working fine now..

thanks
0
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