Jersey (1.19.1)-Hello World, Get started with Jersey using the embedded Grizzly server

Maven Dependencies

The following Maven dependencies need to being added to the POM:

<Dependency>    <groupId>Com.sun.jersey</groupId>    <Artifactid>Jersey-server</Artifactid>    <version>1.19.1</version></Dependency><Dependency>    <groupId>Com.sun.jersey</groupId>    <Artifactid>Jersey-grizzly2</Artifactid>    <version>1.19.1</version></Dependency>

Creating a root resource

Create the following Java class in your project:

 Packagecom.huey.hello.jersey.resources;ImportJavax.ws.rs.GET;ImportJavax.ws.rs.Path;Importjavax.ws.rs.Produces;//the Java class would be hosted at the URI path "/helloworld"@Path ("HelloWorld") Public classHelloworldresource {//The Java method would process HTTP GET requests@GET//the Java method would produce content identified by the MIME Media type "Text/plain"@Produces ("Text/plain")     PublicString SayHello () {//Return the textual content        return"Hello World"; }    }

The Helloworldresource class is a very simple Web resource. The URI path of the resource is "/helloworld", it supports the HTTP GET method and produces cliched textual content of the MIME Media Type "Text/plain".

Deploying the root Resource

The root resource'll be deployed using the Grizzly Web container.

1  PackageCom.huey.hello.jersey;2 3 Importjava.io.IOException;4 ImportJava.net.URI;5 6 ImportJavax.ws.rs.core.UriBuilder;7 8 ImportOrg.glassfish.grizzly.http.server.HttpServer;9 Ten Importcom.sun.jersey.api.container.grizzly2.GrizzlyServerFactory; One ImportCom.sun.jersey.api.core.PackagesResourceConfig; A ImportCom.sun.jersey.api.core.ResourceConfig; -  -  Public classHellojersey { the  -     Private StaticURI Getbaseuri () { -         returnUribuilder.fromuri ("http://localhost/"). Port (9998). Build (); -     } +  -      Public Static FinalURI Base_uri =Getbaseuri (); +  A     protected StaticHttpserver StartServer ()throwsIOException { atSystem.out.println ("Starting grizzly ..."); -ResourceConfig rc =NewPackagesresourceconfig ("com.huey.hello.jersey.resources"); -         returngrizzlyserverfactory.createhttpserver (Base_uri, RC); -     } -  -      Public Static voidMain (string[] args)throwsIOException { inHttpserver Httpserver =startserver (); -System.out.println (String.Format ("Jersey app started with WADL available at" to+ "%sapplication.wadl\ntry out%shelloworld\nhit Enter to stop it ...", + Base_uri, Base_uri)); - System.in.read (); the httpserver.stop (); *     } $}

the HelloJersey class deploys HelloWorldResource the using the Grizzly Web container.

Line creates a initialization parameter that informs the Jersey runtime where to search for root resource classes to B E deployed. In this case it assumes the root resource class in the package com.huey.hello.jersey.resources (or in a Sub-packa GE of).

Line deploys the root resource to the base URI "http://localhost:9998/" and returns a Grizzly httpserver. The complete URI of the ' Hello world ' root resource is ' Http://localhost:9998/helloworld '.

Testing the root Resource

Goto the URI Http://localhost:9998/helloworld in your favourite browser.

Or, from the command line use curl :

Jersey (1.19.1)-Hello World, Get started with Jersey using the embedded Grizzly server