spring-boot - 尽管排除了 JacksonAutoConfiguration，但仍被拉入

Question

我有一个使用 spring-boot-jersey 的简单 REST 服务。我的应用程序如下所示:

@EnableAutoConfiguration(exclude = {JacksonAutoConfiguration.class, SecurityAutoConfiguration.class,
    MongoAutoConfiguration.class, JmxAutoConfiguration.class})
@ComponentScan
public class Application extends SpringBootServletInitializer {

@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
    return application.sources(Application.class);
}

public static void main(String[] args) {
    new Application().configure(new SpringApplicationBuilder(Application.class)).run(args);
}

}

但是，如果我使用 -Ddebug 启动服务，我可以看到这些自动配置类仍然被引入:

JacksonAutoConfiguration
  - @ConditionalOnClass classes found: com.fasterxml.jackson.databind.ObjectMapper (OnClassCondition)

JacksonAutoConfiguration.JacksonObjectMapperAutoConfiguration
  - @ConditionalOnClass classes found: com.fasterxml.jackson.databind.ObjectMapper (OnClassCondition)

JacksonAutoConfiguration.JacksonObjectMapperAutoConfiguration#jacksonObjectMapper
  - @ConditionalOnMissingBean (types: com.fasterxml.jackson.databind.ObjectMapper; SearchStrategy: all) found no beans (OnBeanCondition)

知道为什么会这样吗？

Answer 1

是的。 HttpMessageConvertersAutoConfiguration 导入了 JacksonAutoConfiguration，因此您也必须排除那个。可能真的是一个错误，但至少解决方法是显而易见的。为什么要排除 JacksonAutoConfiguration？