Restful web service with get and post using jersey2 api in Json fromat

Get Request:

http://locahost:8080/rest/admin/helloworld?value=hai

Post Request with json body:

{

"parameter":"anyparameter",

"message":"any message"

}

Url

http://locahost:8080/rest/admin/

web.xml

<?xml version="1.0" encoding="ISO-8859-1" ?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"

      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"

      version="3.0"> 

    <display-name>Hooper Platform RESTful Services</display-name>

    <servlet>

        <servlet-name>rest</servlet-name>

        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>

        <init-param>

          <param-name>javax.ws.rs.Application</param-name>

          <param-value>com.hps.resources.MyApplication</param-value>

        </init-param>

<init-param>

<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>

<param-value>true</param-value>

</init-param>

        <load-on-startup>1</load-on-startup>

        <async-supported>true</async-supported>

    </servlet>

    <servlet-mapping>

        <servlet-name>rest</servlet-name>

        <url-pattern>/rest/*</url-pattern>

    </servlet-mapping>

</web-app> 

Resource class

package com.hps.resources;

import javax.ws.rs.DefaultValue;

import javax.ws.rs.GET;

import javax.ws.rs.POST;

import javax.ws.rs.Path;

import javax.ws.rs.PathParam;

import javax.ws.rs.Produces;

import javax.ws.rs.QueryParam;

import javax.ws.rs.core.MediaType;

import javax.ws.rs.core.Response;

import com.hps.model.HelloRequest;

import com.hps.model.HelloResponse;

@Path("/admin")

public class MessageResource {

@GET

@Path("{parameter}")

public Response responseMsg( @PathParam("parameter") String parameter,

@DefaultValue("Nothing to say") @QueryParam("value") String value) {

String output = "Hello from: " + parameter + " : " + value;

return Response.status(200).entity(output).build();

}

@POST

@Produces(MediaType.APPLICATION_JSON)

public Response produceJson(HelloRequest helloRequest) {

String output = "Hello from: " + helloRequest.getParameter() + " : " +helloRequest.getMessage();

HelloResponse reponse = new HelloResponse(output);

reponse.setStatus(Response.Status.CREATED.getStatusCode());

return Response.status(200).entity(reponse).build();

}

}

Json convertion java file

package com.hps.resources;

import java.util.HashSet;

import java.util.Set;

import javax.ws.rs.ApplicationPath;

import javax.ws.rs.core.Application;

import org.glassfish.jersey.filter.LoggingFilter;

import com.fasterxml.jackson.databind.ObjectMapper;

import com.fasterxml.jackson.databind.SerializationFeature;

import com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider;

@ApplicationPath("/")

public class MyApplication extends Application {

@Override

public Set<Class<?>> getClasses() {

final Set<Class<?>> classes = new HashSet<Class<?>>();

classes.add(MessageResource.class);

return classes;

}

@Override

public Set<Object> getSingletons() {

final Set<Object> instances = new HashSet<Object>();

ObjectMapper mapper = new ObjectMapper();

mapper.configure(SerializationFeature.INDENT_OUTPUT, true);

instances.add(new JacksonJsonProvider(mapper));

instances.add(new LoggingFilter());

return instances;

}

}

HelloRequest

package com.hps.model;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement

public class HelloRequest {

private String message;

private String parameter;

public String getParameter() {

return parameter;

}

public void setParameter(String parameter) {

this.parameter = parameter;

}

public String getMessage() {

return message;

}

public void setMessage(String message) {

this.message = message;

}

@Override

public String toString() {

return "HelloRequest[parameter=" + parameter + ", message=" + message + "]";

}

}

HelloResponse.java

package com.hps.model;

public class HelloResponse {

private String message;

private int status;

public HelloResponse(String message){

this.message = message;

}

public String getMessage() {

return message;

}

public void setMessage(String message) {

this.message = message;

}

public int getStatus() {

return status;

}

public void setStatus(int status) {

this.status = status;

}

}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<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>

<packaging>war</packaging>

<groupId>jersey2-sample</groupId>

<artifactId>jersey2-sample</artifactId>

<version>1.0</version>

<licenses>

<license>

<name>The Apache Software License, Version 2.0</name>

<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>

<distribution>repo</distribution>

</license>

</licenses>

<scm>

<connection>scm:git:git@github.com:aruld/jersey2-sample.git</connection>

<developerConnection>scm:git:git@github.com:aruld/jersey2-sample.git</developerConnection>

<url>git@github.com:aruld/jersey2-sample.git</url>

</scm>

<developers>

<developer>

<id>aruld</id>

<name>Arul Dhesiaseelan</name>

<email>aruld@acm.org</email>

</developer>

</developers>

<properties>

<jersey2.version>2.0-m12</jersey2.version>

<jaxrs.version>2.0-m15</jaxrs.version>

</properties>

<dependencies>

<dependency>

<groupId>javax</groupId>

<artifactId>javaee-web-api</artifactId>

<version>6.0</version>

<scope>provided</scope>

</dependency>

<dependency>

<groupId>org.glassfish.jersey.core</groupId>

<artifactId>jersey-common</artifactId>

<version>2.5</version>

</dependency>

<dependency>

<groupId>org.glassfish.jersey.core</groupId>

<artifactId>jersey-server</artifactId>

<version>2.5</version>

</dependency>

<dependency>

<groupId>org.glassfish.jersey.containers</groupId>

<artifactId>jersey-container-servlet</artifactId>

<version>2.5</version>

</dependency>

<!-- For file upload -->

<dependency>

<groupId>org.glassfish.jersey.media</groupId>

<artifactId>jersey-media-multipart</artifactId>

<version>2.5</version>

</dependency>

<dependency>

<groupId>commons-io</groupId>

<artifactId>commons-io</artifactId>

<version>2.4</version>

</dependency>

<dependency>

<groupId>org.glassfish.jersey.containers</groupId>

<artifactId>jersey-container-grizzly2-http</artifactId>

<version>${jersey2.version}</version>

<scope>test</scope>

</dependency>

<dependency>

<groupId>com.fasterxml.jackson.jaxrs</groupId>

<artifactId>jackson-jaxrs-json-provider</artifactId>

<version>2.2.2</version>

</dependency>

<dependency>

<groupId>org.glassfish.jersey.test-framework.providers</groupId>

<artifactId>jersey-test-framework-provider-bundle</artifactId>

<version>${jersey2.version}</version>

<type>pom</type>

<scope>test</scope>

</dependency>

</dependencies>

<build>

<finalName>cluster</finalName>

<plugins>

<plugin>

<groupId>org.apache.tomcat.maven</groupId>

<artifactId>tomcat7-maven-plugin</artifactId>

<version>2.1</version>

<configuration>

<port>8080</port>

<path>/</path>

<useTestClasspath>false</useTestClasspath>

</configuration>

</plugin>

<plugin>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

<version>3.0</version>

<configuration>

<source>1.6</source>

<target>1.6</target>

</configuration>

</plugin>

</plugins>

</build>

</project>