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package org.github.apycazo.gist.restService;

import java.net.URLEncoder;
import java.util.Iterator;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.UriInfo;

/**
 * Access URL (example): http://localhost:8080/MongoRestAPI/demo?user=john&pass=1234 
 */
@Path("/demo")
public class DemoService {

    @GET
    @Produces("text/html")
    public String get(@Context UriInfo ui) {
        System.out.println("Get call");
        MultivaluedMap queryParams = ui.getQueryParameters();
        return showQueryParams(queryParams);
    }

    @POST
    @Consumes("application/x-www-form-urlencoded")
    @Produces("text/html")
    public String post(MultivaluedMap queryParams) {
        return showQueryParams(queryParams);
    }

    //Extract the parameters.    
    protected String showQueryParams(MultivaluedMap queryParams) {
        Iterator it = queryParams.keySet().iterator();
        String theKey = null;
        String returnString = "";
        try {
            while (it.hasNext()) {
                theKey = (String) it.next();
                returnString += URLEncoder.encode(theKey, "UTF8")
                        + "  "
                        + URLEncoder.encode((String) queryParams.getFirst(theKey), "UTF-8");
            }
        } catch (Exception ex) {
            //This will probably be an UnsupportedEncodingException.
            //Handle more approrpriately. 
            ex.printStackTrace();
            returnString = ex.getMessage();
        }
        return returnString;
    }
}

<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>es.telefonica</groupId>
    <artifactId>MongoRestAPI</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>MongoRestAPI</name>

    <properties>
        <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-web-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>
        
        <!-- These are the Jersey dependencies -->
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-server</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>com.sun.grizzly</groupId>
            <artifactId>grizzly-servlet-webserver</artifactId>
            <version>1.9.18-i</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey.jersey-test-framework</groupId>
            <artifactId>jersey-test-framework-grizzly</artifactId>
            <version>1.4</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    
    <repositories>
        <!--These are needed for Jersey -->
  <!-- Deprecated repos
        <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> 
        <repository>
            <id>maven-repository.dev.java.net</id>
            <name>Java.net Maven 1 Repository (legacy)</name>
            <url>http://download.java.net/maven/1</url>
            <layout>legacy</layout>
        </repository>
	-->
	<repository>
            <id>java.net-Public</id>
            <name>Maven Java Net Snapshots and Releases</name>
            <url>https://maven.java.net/content/groups/public/</url>
        </repository>
    </repositories>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <compilerArguments>
                        <endorseddirs>${endorsed.dir}</endorseddirs>
                    </compilerArguments>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.1.1</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.1</version>
                <executions>
                    <execution>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${endorsed.dir}</outputDirectory>
                            <silent>true</silent>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>javax</groupId>
                                    <artifactId>javaee-endorsed-api</artifactId>
                                    <version>6.0</version>
                                    <type>jar</type>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
    "http://java.sun.com/j2ee/dtds/web-app_2.2.dtd">
<web-app>
  <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.packages</param-name>
      <param-value>org.github.apycazo.gist.restService</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>