使用 lombok.Getter(lazy = true) 和 java 10 的不兼容類型錯誤

Question

我試圖做一些使用緩存reactor ， reactor.ipc.netty.http.client.HttpClient並初始化它與龍目島的懶惰吸氣場@Getter(lazy = true)

在 Java 8 中一切正常，但無法編譯並error: incompatible types: Duration cannot be converted to String此代碼段上的 Java 10 error: incompatible types: Duration cannot be converted to String

@Value
public static class Translations {

    Map<String, Translation> translations;

    @Value
    public static class Translation {

        Map<String, String> content;

    }
}

@Getter(lazy = true)
Mono<Map<String, Translations.Translation>> translations = httpClient
        .get(String.format("%s/translations/%s", endpoint, translationGroup), Function.identity())
        .flatMap(it -> it.receive().aggregate().asByteArray())
        .map(byteArray -> {
            try {
                return objectMapper.readValue(byteArray, Translations.class);
            } catch (IOException e) {
                throw new UncheckedIOException("Failed to get translation for " + translationGroup, e);
            }
        })
        .map(Translations::getTranslations)
        .retryWhen(it -> it.delayElements(Duration.ofMillis(200)))
        .cache(Duration.ofMinutes(5))
        .timeout(Duration.ofSeconds(10));

但它編譯得很好

@Getter(lazy = true)
Mono<Map<String, Translations.Translation>> translations = Mono.just(new byte[]{})
        .map(byteArray -> {
            try {
                return objectMapper.readValue(byteArray, Translations.class);
            } catch (IOException e) {
                throw new UncheckedIOException("Failed to get translation for " + translationGroup, e);
            }
        })
        .map(Translations::getTranslations)
        .retryWhen(it -> it.delayElements(Duration.ofMillis(200)))
        .cache(Duration.ofMinutes(5))
        .timeout(Duration.ofSeconds(10));

如何知道出了什么問題以及如何解決？

Answer 1

我建議將初始化代碼移到單獨的方法中。

@Getter(lazy=true)
SomeType t = <complicatedInitializationCode>;

變成

@Getter(lazy=true)
SomeType t = initializeT();

private SomeType initializeT() {
    return <complicatedInitializationCode>;
}

披露：我是龍目島的開發人員。