How are you packaging your jar? If you're using the assembly plugin
the issue could be that the META-INF/services folder from the jersey
dependencies isn't getting included properly in the resulting
artifact. If that's the case you may be able to use the shade plugin
to sort it out. There are some suggestions in this bug that could
help:
https://jersey.dev.java.net/issues/show_bug.cgi?id=440
Chris
On Tue, Jul 20, 2010 at 11:09 AM, Dominique Guinard <dguinard_at_ethz.ch> wrote:
> Dear Jersey folks,
>
> After a couple of years of Restlet app dev I decided to give a try to
> Jersey. I actually really enjoyed using it but I'm stuck with a problem
> right now.
>
> I embed my Jersey app in Grizzly and develop the whole thing as a maven
> project in netbeans 6.9. So far so good, however when I try packaging
> the app as a standalone project I keep getting the following message,
> whatever resource I ask for, in whatever representation:
>
> ul 20, 2010 3:28:46 PM com.sun.jersey.spi.container.ContainerResponse
> write
> SEVERE: A message body writer for Java class java.lang.String, and Java
> type class java.lang.String, and MIME media type text/plain was not
> found
> Jul 20, 2010 3:28:46 PM com.sun.grizzly.http.servlet.ServletAdapter
> doService
> SEVERE: service exception:
> javax.ws.rs.WebApplicationException
> at
> com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:267)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1043)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:947)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:938)
> at
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:399)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:478)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:663)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> com.sun.grizzly.http.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:195)
> at
> com.sun.grizzly.http.servlet.FilterChainImpl.invokeFilterChain(FilterChainImpl.java:139)
> at
> com.sun.grizzly.http.servlet.ServletAdapter.doService(ServletAdapter.java:376)
> at
> com.sun.grizzly.http.servlet.ServletAdapter.service(ServletAdapter.java:324)
> at
> com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166)
> at
> com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
> at
> com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
> at
> com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
> at
> com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
> at
> com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
> at
> com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
> at
> com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
> at
> com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
> at
> com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
> at
> com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
> at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
> at com.sun.grizzly.util.AbstractThreadPool
> $Worker.doWork(AbstractThreadPool.java:330)
> at com.sun.grizzly.util.AbstractThreadPool
> $Worker.run(AbstractThreadPool.java:309)
> at java.lang.Thread.run(Thread.java:619)
>
>
>
> Here is the resource in question (see below), any help is very welcomed,
> I'm clueless right now!
>
>
> package com.webofthings.webplogg.web.resources;
>
> import com.webofthings.webplogg.meter.SmartMeter;
> import com.webofthings.webplogg.meter.ConsumptionData;
> import com.webofthings.webplogg.meter.SmartMeterManager;
> import com.webofthings.webplogg.meter.Status;
> import com.webofthings.webplogg.meter.config.Configurator;
> import com.webofthings.webplogg.meter.plogg.PloggManager;
> import java.net.URI;
> import java.util.ArrayList;
> import java.util.List;
> import javax.ws.rs.Consumes;
> import javax.ws.rs.GET;
> import javax.ws.rs.PUT;
> import javax.ws.rs.Path;
> import javax.ws.rs.PathParam;
> import javax.ws.rs.Produces;
> import javax.ws.rs.core.MediaType;
> import javax.ws.rs.core.UriBuilder;
>
>
> @Path("/smartmeters")
> @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON,
> MediaType.APPLICATION_ATOM_XML})
> public class SmartMeterResource {
>
> private static SmartMeterManager ploggMgr =
> PloggManager.getInstance();
>
> public SmartMeterResource() {
> }
>
>
> @GET
> public List<SmartMeter> getSmartMeters() {
> return new ArrayList(ploggMgr.getManagedSmartMeters().values());
> }
>
> /**
> * This produces an HTML representation of all the SmartMeters. I.e.
> * a list with links to the each SmartMeter.
> * @return The HTML representation of the list of SmartMeters.
> */
> @GET
> @Produces("text/html")
> public String getSmartMetersHTML() {
> StringBuilder htmlOut = new StringBuilder("<html><body>");
> for (SmartMeter currentSmartMeter :
> ploggMgr.getManagedSmartMeters().values()) {
>
> /* Build URLs to child-resources (SmartMeter) */
> UriBuilder builder =
> UriBuilder.fromPath("/smartmeters/{id}");
> int port = Integer.parseInt(Configurator.getInstance().
> getProperty("WEB_SERVER_PORT"));
> String host =
> Configurator.getInstance().getProperty("WEB_SERVER_HOST");
> builder.scheme("http").port(port).host(host);
> UriBuilder clone = builder.clone();
> URI uri = clone.build(currentSmartMeter.getId());
>
> htmlOut.append("<p>Name: " + currentSmartMeter.getName() +
> "</br>");
> htmlOut.append("ID: " + "<a href=\"");
> htmlOut.append(uri.toString());
> htmlOut.append("\">" + currentSmartMeter.getId() + "</a>");
> htmlOut.append("</p>");
> }
>
> htmlOut.append("</body></hmtl>");
> return htmlOut.toString();
> }
>
> @Path("/{smartMeterId}")
> @GET
> public ConsumptionData getMeterData(@PathParam("smartMeterId")
> String smartMeterId) {
> return ploggMgr.getDataFromMeter(smartMeterId);
> }
>
> /**
> * This produces an HTML representation of a given SmartMeter.
> * @return The HTML representation of the list of SmartMeters.
> */
> @Path("/{smartMeterId}")
> @GET
> @Produces("text/html")
> public String getMeterDataHTML(@PathParam("smartMeterId") String
> smartMeterId) {
> StringBuilder htmlOut = new StringBuilder("<html><body>");
> ConsumptionData cons = ploggMgr.getDataFromMeter(smartMeterId);
>
> /* Build URLs to child-resources (SmartMeter) */
> UriBuilder builder = UriBuilder.fromPath("/smartmeters/");
> int port = Integer.parseInt(Configurator.getInstance().
> getProperty("WEB_SERVER_PORT"));
> String host =
> Configurator.getInstance().getProperty("WEB_SERVER_HOST");
> builder.scheme("http").port(port).host(host);
> UriBuilder clone = builder.clone();
> URI uri = clone.build();
>
> htmlOut.append("<p>Watts: " + cons.getWatt() + "</p>");
> htmlOut.append("<p><a href=\"");
> htmlOut.append(uri.toString());
> htmlOut.append("\"></a>");
>
>
> htmlOut.append("</body></hmtl>");
> return htmlOut.toString();
> }
>
>
> @Path("/{smartMeterId}/status")
> @GET
> public Status getMeterStatus(@PathParam("smartMeterId") String
> smartMeterId) {
> return ploggMgr.getSmartMeter(smartMeterId).getStatus();
> }
>
> @Path("/{smartMeterId}/status")
> @PUT
> @Consumes("text/plain")
> public void setMeterStatus(@PathParam("smartMeterId") String
> smartMeterId, String message) {
> if (message.toLowerCase().equals("off")) {
> ploggMgr.turnOffPower(smartMeterId);
> } else {
> ploggMgr.turnOnPower(smartMeterId);
> }
>
> }
> }
>
>
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