How to implement REST web-services? - web-services

Question

I am trying to learn Java Web-Service using REST architecture.
So far I have created a class but I don't know how to consume that service.
Here's my code:
import javax.ws.rs.GET;
import javax.ws.rs.Produces;
import javax.ws.rs.Path;
#Path("/SericeCreation")
public class SericeCreation {
#GET
#Produces("text/plain")
public String display(){
return "hello";
}
}
Now, I want to call this display method.
Can anyone help me to understand how this can be achieved?

Answer 1

In a very simplified point of view, rest services are bound to Http calls, in your example the #GET annotation tells you that this method is accessed by making an HTTP GET call.
You can simply point your browser to the url generated for this service and you should see the "hello" response. The url is something like this http://<server>:<port>/<AppContext>/<rest-servlet-mapping>/SericeCreation where:
<server> is your server name. Typically localhost
<port> the default server port number. If you are usin Jboss 8080
<AppContext> typically the name of your applicaction (War file)
<rest-servlet-mapping> the RestEasy or Jersey frameworks servlet path
/SericeCreation this comes from the #Path annotation that is used
in your class.
Another way to intereact with your services is using a Rest Client like this one.
And of course, if you want to create a java client you can use the apache http client library, java.net.* package or others. Remember, rest services are accessed by making http calls.
I recommend you read this two tutorials to get a general idea of rest architecture.
Rest RefCard
Beginner's Guide
This great tutorial shows you a lot of examples using Jersey or RestEasy in order to implement Java Rest Services.