Hi so i were trying out the redis cache shown here quarkus redis My increment class

public class Increment {
    public String key; 
    public long value; 

    public Increment(String key, long value) {
        this.key = key;
        this.value = value;
    }

    public Increment() {
    }
}

resource file

@Path("/increments")
public class IncrementResource {
    @Inject
    IncrementService service;

    @POST
    public Increment create(Increment increment) {
        service.set(increment.key, increment.value);
        return increment;
    }

    @GET
    @Path("/{key}")
    public Increment get(String key) {
        System.out.println(key); // always null
        return new Increment(key, service.get(key));
    }

}

service file

@ApplicationScoped
public class IncrementService {

    private StringCommands<String, Long> countCommands; 
    
    public IncrementService(RedisDataSource ds) { 
        this.countCommands = ds.string(Long.class); 
    }

   long get(String key) {
        System.out.println("getting "   key);
        Long value = countCommands.get(key); 
        System.out.println("getting "   value);
        if (value == null) {
            return 0L;
        }
        return value;
    }

    void set(String key, Long value) {
        System.out.println("setting "   key   value);
        countCommands.set(key, value, new SetArgs().ex(Duration.ofSeconds(10)));
    }

    void increment(String key, Long incrementBy) {
        countCommands.incrby(key, incrementBy); 
    }

    public void evict(String key) {
        countCommands.getdel(key);
    }
}

Whenever I run this it works fine. However, the key variable in the resource file GET method is always null. Not sure why, have worked on previous projects

CodePudding user response：

Your GET method is missing the @PathParam annotation before String key

@GET
@Path("/{key}")
public Increment get(@PathParam String key) {
    System.out.println(key); // always null
    return new Increment(key, service.get(key));
}