相关疑难解决方法(0)

我正在使用jsonrpc4j并被卡住了.我举了一个例子来说明我的问题:

抽象类:

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME)
@JsonSubTypes(value = { @JsonSubTypes.Type(value = Walnut.class) })
public abstract class Nut {

}

具体子类:

public class Walnut extends Nut {

}

服务接口:

public interface ServiceInterface {
    public Nut getNut();
    public void setNut(Nut nut);
}

服务本身:

public class Service implements ServiceInterface {
    public Nut getNut() { return new Walnut(); }
    public void setNut(Nut nut) {}
}

服务器:

JsonRpcServer rpcServer = new JsonRpcServer(new ObjectMapper(), new Service());
StreamServer streamServer = new StreamServer(rpcServer, 50, 1420,
        50, InetAddress.getByName("127.0.0.1")); …