javax.websocket.server
Annotation Type PathParam

@Retention(value=RUNTIME)
@Target(value=PARAMETER)
public @interface PathParam

This annotation may be used to annotate method parameters on server side web socket POJOs where a URI-template has been used in the path-mapping of the ServerEndpoint annotation. The method parameter may be of type String, any Java primitive type or any boxed version thereof. If a client URI matches the URI-template, but the requested path parameter cannot be decoded, then the websocket's error handler will be called.

For example:-



@ServerEndpoint("/bookings/{guest-id}");
public class BookingServer {



@OnMessage
public void processBookingRequest(@PathParam("guest-id") String guestID, String message, Session session) {
// process booking from the given guest here
}
}

For example:-



@ServerEndpoint("/rewards/{vip-level}");
public class RewardServer {



@OnMessage
public void processReward(@PathParam("vip-level") Integer vipLevel, String message, Session session) {
// process reward here
}
}

Author:

dannycoward

Required Element Summary

String

value The name of the variable used in the URI-template.

Element Detail

value

public abstract String value

The name of the variable used in the URI-template. If the name does not match a path variable in the URI-template, the value of the method parameter this annotation annotates is null.

Returns:

the name of the variable used in the URI-template.