将 Spring bean 注入枚举并在枚举功能接口中调用它

Question

好吧，我想我正在尝试实现更多目标，但我想为我的应用程序中的所有字典值创建一个聚合器 class。因此我创建了一个有两个参数的枚举——第一个是字典名称，第二个是 Supplier。我选择 Supplier 是因为每个字典的提供值计算方式不同。到目前为止，我想到了这个：

public enum DictionaryAggregator {

    STATUS_X("statusX", StatusX::getDictionary),
    STATUS_Y("statusY", new Supplier<Map<String, ?>>() {
        @Override
        public Map<String, ?> get() {
            return <would like to reference to statusYCache which is inside DictionaryAggregatorServiceInjector>;
        }
    });

    private final String dictionaryName;
    private final Supplier<Map<String, ?>> dictionary;

    public String getDictionaryName() {
        return dictionaryName;
    }

    public Supplier<Map<String, ?>> getDictionary() {
        return dictionary;
    }

    DictionaryAggregator(String dictionaryName, Supplier<Map<String, ?>> dictionary) {
        this.dictionaryName = dictionaryName;
        this.dictionary = dictionary;
    }

    @Component
    static class DictionaryAggregatorServiceInjector {

        @Autowired
        private StatusYService statusYService;

    }
}

但无论我尝试过什么，我都想不出如何从 StatusYCache 服务中提供值。理想情况下，我想要实现的是 STATUS_Y 的 Supplier 可以轻松地从 StatusYService.

调用方法

Answer 1

我想我应该更频繁地使用我的大脑。我想到了这个：

public enum DictionaryAggregator {

    STATUS_X("statusX", StatusX::getDictionary),
    STATUS_Y("statusY", new Supplier<Map<String, ?>>() {
        @Override
        public Map<String, ?> get() {
            return new StatusYDictionaryClass(DictionaryAggregatorServiceInjector.shipmentStatusVos).getDictionary();
        }
    });

    private final String dictionaryName;
    private final Supplier<Map<String, ?>> dictionary;

    public String getDictionaryName() {
        return dictionaryName;
    }

    public Supplier<Map<String, ?>> getDictionary() {
        return dictionary;
    }

    DictionaryAggregator(String dictionaryName, Supplier<Map<String, ?>> dictionary) {
        this.dictionaryName = dictionaryName;
        this.dictionary = dictionary;
    }

    @Component
    static class DictionaryAggregatorServiceInjector {

        static List<StatusYObj> statusYList;

        @Autowired
        public StatusYService statusYService;

        @PostConstruct
        public void init() {
            statusYList = statusYService.getStatusYList();
        }

    }
}

似乎有效。

将 Spring bean 注入枚举并在枚举功能接口中调用它

Inject Spring bean into enum and invoke it inside enums functional interface

java

enums

spring

dependency-injection

functional-interface