Spring应用部署环境出现BeanCreationException问题求助

问题概述 #

本地运行正常的Spring应用，在部署环境（采用Corretto 11运行Jar包）启动时触发BeanCreationException错误。初步推测问题可能出在Maven依赖层面。该应用通过ApiClientManager类，基于Spring WebFlux的WebClient实现外部API的异步调用，且自定义WebClient已禁用SSL验证。

相关代码 #

ApiClientManager类核心代码 #

@Component
public class ApiClientManager {
    private final WebClient webClient;

    public ApiClientManager(WebClient.Builder webClientBuilder) {
        // 自定义SSL禁用配置
        SslContext sslContext = SslContextBuilder.forClient()
                .trustManager(InsecureTrustManagerFactory.INSTANCE)
                .build();
        ClientHttpConnector connector = new ReactorClientHttpConnector(
                HttpClient.create().secure(t -> t.sslContext(sslContext))
        );
        this.webClient = webClientBuilder.clientConnector(connector).build();
    }

    // 外部API调用方法
    public Mono<String> callExternalApi(String url) {
        return webClient.get().uri(url).retrieve().bodyToMono(String.class);
    }
}

WebClient配置类（若有） #

@Configuration
public class WebClientConfig {
    @Bean
    public WebClient.Builder webClientBuilder() {
        return WebClient.builder();
    }
}

POM依赖核心配置 #

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-webflux</artifactId>
    </dependency>
    <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-handler</artifactId>
    </dependency>
    <!-- 其他业务依赖 -->
</dependencies>

完整错误堆栈信息 #

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'apiClientManager' defined in file [...ApiClientManager.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [...ApiClientManager]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: io/netty/handler/ssl/SslContextBuilder
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1320)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1214)
    ...
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [...ApiClientManager]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: io/netty/handler/ssl/SslContextBuilder
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:223)
    ...
Caused by: java.lang.NoClassDefFoundError: io/netty/handler/ssl/SslContextBuilder
    at [...ApiClientManager.<init>(ApiClientManager.java:25)]
    ...

内容的提问来源于stack exchange，提问作者Subhajit