Chapter 54. Extending JAX-RS Endpoints with Swagger Support

<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jaxrs="http://cxf.apache.org/jaxrs"
xsi:schemaLocation="
	http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">

        <jaxrs:server id="customerService" address="/crm">
           <jaxrs:serviceBeans>
               <ref component-id="customerSvc"/>
           </jaxrs:serviceBeans>
           <jaxrs:providers>
               <bean class="com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider" />
           </jaxrs:providers>
           <jaxrs:features>
               <!-- include Swagger Feature -->
               <bean class=“org.apache.cxf.jaxrs.swagger.SwaggerFeature” />
           </jaxrs:features>
       </jaxrs:server>

	</beans>

...

import javax.annotation.Resource;
import javax.ws.rs.core.Context;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;

import com.wordnik.swagger.annotations.Api;
import com.wordnik.swagger.annotations.ApiOperation;
import com.wordnik.swagger.annotations.ApiParam;
import com.wordnik.swagger.annotations.ApiResponses;
import com.wordnik.swagger.annotations.ApiResponse;

…

@Path("/customerservice/")
@Api(value = "/customerservice", description = "Operations about customerservice")
public class CustomerService {

    private static final Logger LOG = LoggerFactory.getLogger(CustomerService.class);

    long currentId = 123;
    Map<Long, Customer> = customers = new HashMap<Long, Customer>();
    Map<Long, Order> orders = new HashMap<Long, Order>();
    private MessageContext jaxrsContext;

    public CustomerService() {
        init();
    }

   @GET
    @Path("/customers/{id}/")
    @Produces("application/xml")
    @ApiOperation(value = "Find Customer by ID", notes = "More notes about this method", response = Customer.class)
    @ApiResponses(value = {
            @ApiResponse(code = 500, message = "Invalid ID supplied"),
            @ApiResponse(code = 204, message = "Customer not found")
            })
    public Customer getCustomer(@ApiParam(value = "ID of Customer to fetch", required = true) @PathParam("id") String id) {
        LOG.info("Invoking getCustomer, Customer id is: {}", id);
        long idNumber = Long.parseLong(id);
        Customer c = customers.get(idNumber);
        return c;
    }

    @PUT
    @Path("/customers/")
    @Consumes({ "application/xml", "application/json" })
    @ApiOperation(value = "Update an existing Customer")
    @ApiResponses(value = {
            @ApiResponse(code = 500, message = "Invalid ID supplied"),
            @ApiResponse(code = 204, message = "Customer not found")
            })
    public Response updateCustomer(@ApiParam(value = "Customer object that needs to be updated", required = true) Customer customer) {
        LOG.info("Invoking updateCustomer, Customer name is: {}", customer.getName());
        Customer c = customers.get(customer.getId());
        Response r;
        if (c != null) {
            customers.put(customer.getId(), customer);
            r = Response.ok().build();
        } else {
            r = Response.notModified().build();
        }

        return r;
    }

    @POST
    @Path("/customers/")
    @Consumes({ "application/xml", "application/json" })
    @ApiOperation(value = "Add a new Customer")
    @ApiResponses(value = { @ApiResponse(code = 500, message = "Invalid ID supplied"), })
    public Response addCustomer(@ApiParam(value = "Customer object that needs to be updated", required = true) Customer customer) {
        LOG.info("Invoking addCustomer, Customer name is: {}", customer.getName());
        customer.setId(++currentId);

        customers.put(customer.getId(), customer);
        if (jaxrsContext.getHttpHeaders().getMediaType().getSubtype().equals("json")) {
            return Response.ok().type("application/json").entity(customer).build();
        } else {
            return Response.ok().type("application/xml").entity(customer).build();
        }
    }

    @DELETE
    @Path("/customers/{id}/")
    @ApiOperation(value = "Delete Customer")
    @ApiResponses(value = {
            @ApiResponse(code = 500, message = "Invalid ID supplied"),
            @ApiResponse(code = 204, message = "Customer not found")
            })
    public Response deleteCustomer(@ApiParam(value = "ID of Customer to delete", required = true) @PathParam("id") String id) {
        LOG.info("Invoking deleteCustomer, Customer id is: {}", id);
        long idNumber = Long.parseLong(id);
        Customer c = customers.get(idNumber);

     …
}