JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

Publish Your Article Here

Java client for restful web service using Jersey API


In this page you will come to know how to create java client for restful web services using Jersey API. You will see two sections here, the first section talks about how to connect to "GET" request, and the second section shows how to connect to "POST" type of requests.

We are referring to the previous example as a restful web services.

Java Client for GET Request using Jersey API

package com.java2novice.rest.client;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;

public class JersyGetClient {

	public static void main(String a[]){
		
		String url = "http://localhost:8080/RestfulWebServices/order-inventory/order/1016";
		Client restClient = Client.create();
		WebResource webResource = restClient.resource(url);
		ClientResponse resp = webResource.accept("application/json")
													.get(ClientResponse.class);
		if(resp.getStatus() != 200){
			System.err.println("Unable to connect to the server");
		}
		String output = resp.getEntity(String.class);
		System.out.println("response: "+output);
	}
}

The output for above code is:

Output:
response: {"custmer":"Java2Novice","address":"Bangalore","bill-amount":"$2000"}

Java Client for POST Request using Jersey API

In this example you will see how to send json input through java client using POST method:

package com.java2novice.rest.client;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;

public class JerseyPostClient {

	public static void main(String a[]){
		
		String url = "http://localhost:8080/RestfulWebServices/order-inventory/order";
		String jsonInput = "{\"custmer\":\"Java2novice\",\"address\":\"Bangalore\","+
				"\"bill-amount\":\"$2000\"}";
		Client restClient = Client.create();
		WebResource webResource = restClient.resource(url);
		ClientResponse resp = webResource.type("application/json")
									.post(ClientResponse.class, jsonInput);
		if(resp.getStatus() != 200){
			System.err.println("Unable to connect to the server");
		}
		String output = resp.getEntity(String.class);
		System.out.println("response: "+output);
	}
}

The output for above code is:

Output:
response: Your order is in-progress
<< Previous Program | Next Program >>
blog comments powered by Disqus

Restful Web Services Examples

  1. Restful web services using RESTEasy hello world example.
  2. Restful web services using Jersey hello world example.
  3. JAX-RS @Path annotation example
  4. JAX-RS @Path annotation with regular expression match example
  5. JAX-RS @PathParam annotation example
  6. JAX-RS @QueryParam and @DefaultValue annotations example
  7. JAX-RS @MatrixParam annotation example
  8. How to read multiple values of a query paramter in JAX-RS restful web services?
  9. How to pass header parameters as method inputs in JAX-RS restful web services?
  10. How to read header parameters in JAX-RS restful web services?
  11. JAX-RS @FormParam annotation example
  12. How to upload file using Jersey restful web services?
  13. How to download file using java restful web services?
  14. XML based Restful web service with RESTEasy and JAXB.
  15. XML based Restful web service with Jersey and JAXB.
  16. Json based Restful web service with RESTEasy, Jettison and JAXB
  17. Json based Restful web service with RESTEasy and Jackson
  18. Json based Restful web service with Jersey and Jackson
  19. How to input json request with Jersey and Jackson?
  20. Java client for restful web service using java.net package
  21. Java client for restful web service using Jersey API
  22. Java restful webservices with HTTP basic authentication.
Knowledge Centre
Interface and its usage
Interface is similar to a class which may contain method's signature only but not bodies and it is a formal set of method and constant declarations that must be defined by the class that implements it. Interfaces are useful for declaring methods that one or more classes are expected to implement, capturing similarities between unrelated classes without forcing a class relationship and determining an object's programming interface without revealing the actual body of the class.
Famous Quotations
If you don’t make mistakes, you’re not working on hard enough problems. And that’s a big mistake.
-- Frank Wilczek

About Author

Most Visited Pages

Other Interesting Sites

Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
Privacy Policy | Copyright © 2017 by Nataraja Gootooru. All Rights Reserved.