Java Reference
In-Depth Information
@POST
@Path("/{id:\\d+}")
@Produces(MediaType.APPLICATION_JSON)
public Response buyTicket(@PathParam("id")
int id) {
Response.ResponseBuilder builder = null;
try {
service.buyTicket(id);
builder = Response.ok("Ticket booked");
}
catch (Exception e) {
// Handle generic exceptions
Map<String, String> responseObj = new
HashMap<String, String>();
responseObj.put("error", e.getMessage());
builder =
Response.status(Response.Status.BAD_REQUEST).entity(responseObj);
}
return builder.build();
}
}
If you have understood our earlier section well, this code will be almost intuitive to
you. We have included two methods here, just like the SOAP alter ego; the former
one is named
getSeatList
, which is bound to an HTTP
GET
request and produces
the list of
Seats
. The list is returned using a
JSON
representation that is pretty com-
mon when returning Java objects to the client.
Note
The grammar for JSON objects is simple and requires the grouping of the data
definition and data values, it is as follows:
• Elements are enclosed with curly brackets (
{
and
})
