我开始学习Guice,但是我已经遇到了问题。当我尝试绑定TypeLiteral时,我收到Cannot resolve method 'to(anonymous com.google.inject.TypeLiteral<>
。我试图寻找问题的原因,但没有效果。也许有人知道如何解决?
这是我要使用bind()
的类。
public class MainModule extends AbstractModule {
protected void configure(){
bind(DeckFactory.class).to(BlackjackDeckCreator.class);
bind(CardFactory.class).to(BlackjackCardCreator.class);
bind(PointsCalculator.class)
.to(BlackjackPointsCalculator.class);
bind(Logic.class)
.toProvider(CompositeGameLogicStrategyProvider.class);
// Problem
bind(new TypeLiteral<Randomizer<BlackjackCard>>() { })
.to(new TypeLiteral<BlackjackCardRandomizer>() {});
//
bind(DecisionTaker.class)
.toProvider(CompositeDecisionTakerProvider.class);
bind(StatisticPrinter.class)
.to(ConsoleStatisticPrinter.class);
bind(HitGameLogicStrategy.class)
.toProvider(HitGameLogicProvider.class);
bind(StandGameLogicStrategy.class)
.toProvider(StandGameLogicProvider.class);
install(new FactoryModuleBuilder().build(GameFactory.class));
install(new FactoryModuleBuilder()
.build(PlayerFactory.class));
bind(StatisticsTemplate.class)
.toProvider(StatisticsTemplateProvider.class);
}
}
Randomizer.java
public interface Randomizer<T extends Card> {
T randomizeCard(List<T> deck);
}
BlackjackCardRandomizer.java
public class BlackjackCardRandomizer implements Randomizer {
private static final Random RANDOM = new Random();
@Override
public Card randomizeCard(List deck) {
Integer randIndex = RANDOM.nextInt(deck.size());
return (Card) deck.get(randIndex);
}
}
提前致谢!
最佳答案
您应该改用以下内容:
bind(new TypeLiteral<Randomizer<BlackjackCard>>() { })
.to(BlackjackCardRandomizer.class);
仅仅因为您具有
TypeLiteral
作为接口并不意味着您必须使用类型文字作为实现。另外,更改您的
extends
:public class BlackjackCardRandomizer implements Randomizer<BlackjackCard> {
private static final Random RANDOM = new Random();
@Override
public BlackjackCard randomizeCard(List<BlackjackCard> deck) {
Integer randIndex = RANDOM.nextInt(deck.size());
return (Card) deck.get(randIndex);
}
}