In this tutorial, we show you how to develop a simple RESTfull web service application with embedded jetty server using cuubez framwork.
Technologies and Tools used in this article:
- cuubez 1.1.1
- JDK 1.7
- Maven 3.0.3
- Intellij IDEA 13.1.1
Note: If you want to know what and how REST works, just search on Google, ton of available resources.
1. Directory Structure
This is the final web project structure of this tutorial.
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2. Standard Java Project
Create a standard Maven java project structure
mvn archetype:generate -DgroupId=com.cuubez -DartifactId=cuubez-jetty -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
Note: To support IntelliJ IDEA, use Maven command :
mvn idea:idea
3. Project Dependencies
Following maven dependencies should add to the pom.xml file.
File : pom.xml
<dependency>
<groupId>com.cuubez</groupId>
<artifactId>cuubez-core</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-servlet</artifactId>
<version>8.0.4.v20111024</version>
</dependency>
4. REST Service
@Path("/users/{userId}")
@Produces(MediaType.APPLICATION_JSON)
public class UserResource {
private static Log log = LogFactory.getLog(UserResource.class);
@GET
@Produces(MediaType.APPLICATION_JSON)
public Response userGet(@PathParam(value = "userId") String id, @QueryParam(value = "name") String name, @QueryParam(value = "age") int age) {
User user = new User(id, age, name);
return Response.ok().entity(user).build();
}
@Consumes(MediaType.APPLICATION_JSON)
@POST
public void userPost(User user) {
log.info("POST = [" + user + "]");
}
@PUT
@Consumes({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
public void userPut(User user) {
log.info("PUT = [" + user + "]");
}
}
5. Embedded Jetty Implementation
public class JettyServer {
public static void main(String args[]) {
Server server = new Server(8080);
ServletContextHandler handler = new ServletContextHandler(ServletContextHandler.SESSIONS);
server.setHandler(handler);
handler.setContextPath("/");
handler.setResourceBase(".");
handler.addEventListener(new BootstrapContextListener()); //cuubez bootstrap context listner
handler.addServlet(HttpServletDispatcher.class, "/rest/*"); //servlet filter
try {
server.start();
server.join();
} catch (Exception e) {
e.printStackTrace();
}
}
}
6. Demo
In this example, web request from projectURL/rest/users/id-1003 will match to UserResource, via @Path("/users/{userId}"). {userId} will match to parameter annotated with @PathParam and age and name will match to parameters annotated with @QueryParam
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