Java Reference
In-Depth Information
Chapter 20. Examples for Chapter 5
Chapter 5 showed you how to use JAX-RS annotations to inject specific information about
an HTTP request into your Java methods and fields. This chapter implements most of the in-
jection scenarios introduced in Chapter 5 so that you can see these things in action.
Example ex05_1: Injecting URI Information
This example illustrates the injection annotations that are focused on pulling in information
from the incoming request URI. Specifically, it shows how to use @PathParam , @Mat-
rixParam , and @QueryParam . Parallel examples are also shown using
javax.ws.rs.core.UriInfo to obtain the same data.
The Server Code
The first thing you should look at on the server side is CarResource . This class pulls the
various examples in Chapter 5 together to illustrate using @MatrixParam and @PathParam
with the javax.ws.rs.core.PathSegment class:
src/main/java/com/restfully/shop/services/CarResource.java
@Path ( "/cars" )
public
public class
class CarResource
CarResource
{
public
public static
static enum
enum Color
{
red ,
white ,
blue ,
black
}
@GET
@Path ( "/matrix/{make}/{model}/{year}" )
@Produces ( "text/plain" )
public
public String getFromMatrixParam (
@PathParam ( "make" ) String make ,
@PathParam ( "model" ) PathSegment car ,
@MatrixParam ( "color" ) Color color ,
@PathParam ( "year" ) String year )
{
return
return "A " + color + " " + year + " "
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