java - Grizzly and Jersey standalone jar

Question

I am trying to package Grizzly with Jersey as a single jar using Maven shade plugin. But I always get the message No container provider supports the type class org.glassfish.grizzly.http.server.HttpHandler

The code works fine in Eclipse, but not in a packaged jar:

public class Main {

private static URI getBaseURI() {
    return UriBuilder.fromUri("http://localhost/").port(9998).build();
}

public static final URI BASE_URI = getBaseURI();

protected static HttpServer startServer() throws IOException {
    System.out.println("Starting grizzly...");
    ResourceConfig rc = new PackagesResourceConfig("share.test");
    rc.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
    return GrizzlyServerFactory.createHttpServer(BASE_URI, rc);
}

public static void main(String[] args) throws IOException {
    HttpServer httpServer = startServer();
    System.in.read();
    httpServer.stop();
}    
}

Here is the complete exception

$ java -jar target/webServiceTest-0.0.1-SNAPSHOT.jar
Starting grizzly...
Mar 20, 2012 12:48:53 PM com.sun.jersey.api.core.PackagesResourceConfig init
INFO: Scanning for root resource and provider classes in the packages:
  share.test
Mar 20, 2012 12:48:54 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses
INFO: Root resource classes found:
  class share.test.NonJAXBBeanResource
  class share.test.Hello
Mar 20, 2012 12:48:54 PM com.sun.jersey.api.core.ScanningResourceConfig init
INFO: No provider classes found.
Exception in thread "main" java.lang.IllegalArgumentException: No container provider supports the type class org.glassfish.grizzly.http.server.HttpHandler
    at com.sun.jersey.api.container.ContainerFactory.createContainer(ContainerFactory.java:196)
    at com.sun.jersey.api.container.ContainerFactory.createContainer(ContainerFactory.java:134)
    at com.sun.jersey.api.container.grizzly2.GrizzlyServerFactory.createHttpServer(GrizzlyServerFactory.java:242)
    at share.test.Main.startServer(Main.java:27)
    at share.test.Main.main(Main.java:31)

I am building the jar package using maven with

<build>
 <plugins>
  <plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-shade-plugin</artifactId>
   <version>1.5</version>
   <configuration>
   <transformers>
   <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
     <manifestEntries>
      <Main-Class>share.test.Main</Main-Class>
      <Build-Number>1</Build-Number>
     </manifestEntries>
    </transformer>
  </transformers>
 </configuration>
<executions>
 <execution>
  <phase>package</phase>
   <goals>
    <goal>shade</goal>
   </goals>
 </execution>
</executions>
</plugin>
</plugins>
</build>

Do I need to change the shade plugin to include anything else?

Answer 1

The error looks like the plugin is not merging the META-INF/services records from different jars correctly - if there are multiple files with the same name in META-INF/services directory of several jars, they need to be merged, not replaced one by the other. Check if that is the case.