Build Simple Restful Web App with Maven and Jersey

1) Create a New Project Layout

cd/d C:\tmp\restful
mvn archetype:create -DgroupId=my.example.com -DartifactId=SimpleRESTApp -DarchetypeArtifactId=maven-archetype-webapp

It will create the following subtree:

SimpleRESTApp
   |-src
   |---main
   |-----resources
   |-----webapp
   |-------WEB-INF

2) Creating a REST Resource Class

package com.example.my;

import javax.ws.rs.GET;
import javax.ws.rs.Produces;
import javax.ws.rs.Path;

// The Java class will be hosted at the URI path "/greeting"
@Path("greeting")
public class SimpleResource {

    // and implement the following GET method 
    @GET 
    @Produces("text/plain")
    public String getGreeting() {
        return "Hi there";
    }
}

3) Adding Necessary Dependencies Into Our POM,
C:\tmp\restful\SimpleRESTApp\pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>my.example.com</groupId>
  <artifactId>SimpleRESTApp</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>SimpleRESTApp Maven Webapp</name>
  <url>http://maven.apache.org</url>

<repositories>
    <repository>
      <id>maven2-repository.dev.java.net</id>
      <name>Java.net Repository for Maven</name>
      <url>http://download.java.net/maven/2/</url>
      <layout>default</layout>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>3.8.1</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.1.0-ea</version>
    </dependency>

    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-core</artifactId>
        <version>1.1.0-ea</version>
    </dependency>
    <dependency>
        <groupId>javax.ws</groupId>
        <artifactId>jsr311</artifactId>
        <version>1.1</version>
    </dependency>
    <dependency>
        <groupId>org.objectweb</groupId>
        <artifactId>asm</artifactId>
        <version>3.1</version>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>tomcat-maven-plugin</artifactId>
        </plugin>

        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.5</source>
                <target>1.5</target>
            </configuration>
        </plugin>
    </plugins>

    <finalName>SimpleRESTApp</finalName>
</build>

</project>

4) Configuring Jersey Servlet Adapter
C:\tmp\restful\SimpleRESTApp\src\main\webapp\WEB-INF\web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

<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.resourceConfigClass</param-name>
        <param-value>com.sun.jersey.api.core.PackagesResourceConfig</param-value>
    </init-param>

    <init-param>
      <param-name>com.sun.jersey.config.property.packages</param-name>
      <param-value>com.example.my</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>Jersey Web Application</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

</web-app>

5) Install jersey 1.1.0-ea maven repository

mvn install:install-file -DgroupId=com.sun.jersey -DartifactId=jersey-server -Dversion=1.1.0-ea -Dpackaging=jar -Dfile=E:\jersey-archive-1.1.0-ea\lib\jersey-server-1.1.0-ea.jar
mvn install:install-file -DgroupId=com.sun.jersey -DartifactId=jersey-core -Dversion=1.1.0-ea -Dpackaging=jar -Dfile=E:\jersey-archive-1.1.0-ea\lib\jersey-core-1.1.0-ea.jar
mvn install:install-file -DgroupId=javax.ws -DartifactId=jsr311 -Dversion=1.1 -Dpackaging=jar -Dfile=E:\jersey-archive-1.1.0-ea\lib\jsr311-api-1.1.jar
mvn install:install-file -DgroupId=org.objectweb -DartifactId=asm -Dversion=3.1 -Dpackaging=jar -Dfile=E:\jersey-archive-1.1.0-ea\lib\asm-3.1.jar

6) Running The Application

cd/C:\tmp\restful\SimpleRESTApp
mvn tomcat:run

7) Testing Your REST Resource
http://localhost:8080/SimpleRESTApp/greeting

Reference:
http://blogs.sun.com/japod/entry/building_simple_jersey_web_app