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JAX-RS Advanced

Introducing the Sample

The sample shows some advanced functionalities of REST-based Web Services using JAX-RS (JSR-311). The REST server provides the following services:   

  • A RESTful Starbucks outlet service is provided on URL http://localhost:9763/jaxrs_sample_02/services/Starbucks_Outlet_Service (say serviceURL). Users access this URI to perform operations of drink orders.      
  • A HTTP GET request to URL ${serviceURL}/orders/123 returns a drink order added with the generated id 123. The JSON document returns: 
{
   "Order":{
       "orderId":"123",
       "drinkName":"Vanilla Flavored Coffee",
       "additions":"Milk",
       "locked":false
   }
}
  • A HTTP POST request to URL ${serviceURL}/orders  with the following data adds an order.
<Order>
   <drinkName>Mocha Flavored Coffee</drinkName>
   <additions>Caramel</additions>
</Order>
  • An id for this order is generated at server-side and returned in the response.   The response body looks like the following in JSON format.
{"Order":{
   "additions":"Caramel",
   "drinkName":"Mocha Flavored Coffee",
   "locked":false,
   "orderId":"ee1a9ec2-c8a5-4afe-8585-74df591f9990"
}}
  • A HTTP PUT request to URL ${serviceURL}/orders with the following data, where the 'orderId' is set to the one received in the response body when the order was added:
{
   "Order":{
       "orderId":"ee1a9ec2-c8a5-4afe-8585-74df591f9990",
       "additions":"Chocolate Chip Cookies"
   }
}
  • It updates the 'additions' of the order "ee1a9ec2-c8a5-4afe-8585-74df591f9990" from "Caramel" to "Chocolate Chip Cookies". The response will be in XML-format as follows.  
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
   <Order>
      <additions>Chocolate Chip Cookies</additions>
      <drinkName>Full Leaf Green Tea</drinkName>
      <locked>true</locked>
      <orderId>ee1a9ec2-c8a5-4afe-8585-74df591f9990</orderId>
   </Order>
  • A HTTP DELETE request to URL ${serviceURL}/orders/ee1a9ec2-c8a5-4afe-8585-74df591f9990 with an empty request body will delete the order details of order "ee1a9ec2-c8a5-4afe-8585-74df591f9990".

The client code demonstrates how to send HTTP GET/POST/PUT/DELETE requests whereas the server code demonstrates how to build a RESTful endpoint through JAX-RS (JSR-311) APIs.

This sample can be found at <CARBON_HOME>\samples\Jaxws-Jaxrs\jaxrs_ sample_02 .  

Building and Running the Sample    

Using Maven

1. Install and run the WSO2 Application Server. Refer to the   Installing Features for instructions.

2. From the base directory of this sample ( <CARBON_HOME>\samples\Jaxws-Jaxrs\jaxrs_ sample_02 ) , the maven pom.xml file can be used to build and run the sample using either UNIX or Windows.

3. To build the sample and create a WAR file, run mvn clean install command.

4. Start the Application Server (run bin/wso2server.sh in Linux, or bin\wso2server.bat in Windows).

  • mvn -Pdeploy (deploys the generated WAR file on WSO2 AS with related logs on the console)
  • mvn -Pclient (runs the client)

Using Apache Ant  

  1. Run "ant" on  <CARBON_HOME>\samples\Jaxws-Jaxrs\jaxrs_ sample_02 directory to deploy the jaxrs_sample_02 service on the server.

2. Start the application server and access its Management Console at https://localhost:9443/carbon.

3. Go to "Services -> List" menu to find the jaxrs_sample_02 service listed on the "Deployed Services" window.

4. Execute "sh run-client.sh" or "run-client.bat" to run the client.

5. Try the sample with different QoS options which appear on its dashboard. Run "sh run-client.sh -help" for different options.


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