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JavaInterviewPoint

Java Development Tutorials

JAX-RS REST @FormParam Example

October 16, 2015 by javainterviewpoint Leave a Comment

Previously we have learnt about @PathParam, @QueryParam, @Context, @MatrixParam annotations, In this article we will learn how to get the values from the Form which is getting submitted using @FormParam annotation.

Folder Structure

  1. Create a Dynamic Web Project RESTful_Example and create a package for our src files “com.javainterviewpoint“
  2. Place the required jar files under WEB-INF/Lib 

    jersey-bundle-1.18.jar
    asm-3.1.jar

  3. Create the Java classes FormParamExample.java under  com.javainterviewpoint folder.
  4. Place the index.jsp inside the WebContent directory.
  5. Place the web.xml  under the WEB-INF directory

@FormParam Example

package com.javainterviewpoint;

import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.Response;

@Path("/form")
public class FormParamExample 
{
    @Path("/createUser")
    @POST
    public Response createUser(
            @FormParam("firstName") String firstName,
            @FormParam("lastName") String lastName)
    {
        return Response.
                status(200).
                entity("New User Created,Welcome "+firstName).
                build();
    }
}

Index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
 pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
  </head>
  <body>
     <form action="rest/form/createUser" method="post">
     First Name : <input type="text" name="firstName" /><br>
     Last Name : <input type="text" name="lastName" /><br>
     <input type="submit" value="Create User" />
     </form>
  </body>
</html>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
	<display-name>Restful Web Application</display-name>
	<servlet>
		<servlet-name>jersey-serlvet</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>com.javainterviewpoint</param-value>
		</init-param>

		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>jersey-serlvet</servlet-name>
		<url-pattern>/rest/*</url-pattern>
	</servlet-mapping>
</web-app>

We register our jersey container “com.sun.jersey.spi.container.servlet.ServletContainer” in the servlet-class of our web.xml and we will mention the source files location as the value to the init param “com.sun.jersey.config.property.packages” so that the container will scan for annotations of the class files within that package.

Hit on the URI :

http://localhost:8080/RESTful_Example

Output

FormParamExample1

Fill in the form and submit

FormParamExample2


Other interesting articles which you may like …

  • JAX-RS Jersey Hello World Example
  • JAX-RS @Path URI Matching Example
  • Jersey RESTful Web Services Client – Getting List of Object (GenericType)
  • Jersey Jackson JSON Tutorial
  • JAX-RS REST @Produces Example
  • JAX-RS REST @Consumes Example
  • JAX-RS REST @Produces both XML and JSON Example
  • JAX-RS REST @Consumes both XML and JSON Example
  • RESTful Java Client With Jersey Client
  • RESTEasy Hello World Example with Apache Tomcat
  • RESTful Java client with RESTEasy client
  • Spring RESTful Web Services Hello World XML Example
  • Springfox Swagger 2 for Spring RESTful Web Services

Filed Under: J2EE, Java, JAX-RS, REST Tagged With: @FormParam, @FormParam Example, JAX-RS, Rest

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