无法实例化Spring bean存储库

Question

在此任务中，我不允许使用自动布线

@Configuration
public class ApplicationConfig {

    @Bean
    public FoodService foodService() {
        return new FoodService(FoodRepository());
    }

    @Bean
    public FoodRepository foodRepository() {
        return new FoodRepository();
    }
}

Answer 1

我在Spring Data MongoDB文档中找到了答案

在ApplicationConfig.java内部，我应该执行以下操作：

@Configuration
@EnableMongoRepositories("com.food.repository")
public class ApplicationConfig {
@Value("${spring.data.mongodb.host}")
private String mongoHost;

@Value("${spring.data.mongodb.port}")
private int mongoPort;

@Value("${spring.data.mongodb.database}")
private String mongoDB;

@Bean
public foodService foodService() {
    MongoOperations operations = new MongoTemplate(new MongoClient(mongoHost,mongoPort), mongoDB);
    MongoRepositoryFactory factory = new MongoRepositoryFactory(operations);
    foodRepository foodRepository = factory.getRepository(foodRepository.class);
    return new foodService(foodRepository);
}