是否可以扩展WebMvcConfigurationSupport并使用WebMvcAutoConfiguration？ [英] Is it possible to extend WebMvcConfigurationSupport and use WebMvcAutoConfiguration?

问题描述

我需要扩展WebMvcConfigurationSupport类，修改两件事：

I need to extend the WebMvcConfigurationSupport class too modify two things:

@Configuration
public class WebConfig extends WebMvcConfigurationSupport {
    @Override
    public RequestMappingHandlerMapping requestMappingHandlerMapping() {
        RequestMappingHandlerMapping handlerMapping = super.requestMappingHandlerMapping();
        handlerMapping.setRemoveSemicolonContent(false);
        handlerMapping.setOrder(1);
        return handlerMapping;
    }
}

我喜欢从WebMvcAutoConfiguration类注册的默认值但是由于类上的条件注释，当我扩展WebMvcConfigurationSupport类时，它会阻止自动配置发生。

I like the defaults that are registered from the WebMvcAutoConfiguration class but due to the conditional annotation on the class, when I extend the WebMvcConfigurationSupport class it prevents the auto configuration from happening.

@Configuration
@ConditionalOnWebApplication
@ConditionalOnClass({ Servlet.class, DispatcherServlet.class,
    WebMvcConfigurerAdapter.class })
@ConditionalOnMissingBean(WebMvcConfigurationSupport.class)
@Order(Ordered.HIGHEST_PRECEDENCE + 10)
@AutoConfigureAfter(DispatcherServletAutoConfiguration.class)
public class WebMvcAutoConfiguration {...}

是否要在没有WebMvcAutoConfiguration类的情况下加载基本上复制/粘贴该类中的大部分代码？

Is there to have the WebMvcAutoConfiguration class load without having to essentially copy/paste most of the code in that class?

或者是否可以从其他地方调用RequestMappingHandlerMapping setOrder（）和setRemoveSemicolonContent（），这样我就可以使用@EnableWebMvc注释并运行自动配置类而不会出现任何问题？

Or is it possible to call RequestMappingHandlerMapping setOrder() and setRemoveSemicolonContent() from somewhere else so I can just use the @EnableWebMvc annotation and have the autoconfiguration class run without any issues?

提前致谢！

推荐答案

您的分析是正确的（ @EnableWebMvc 或直接扩展 WebMvcConfigurationSupport 将关闭 WebMvcAutoConfiguration ）。我不确定替代方案是什么，因为a）我们需要autoconfig的get-out子句，以及b）我不认为Spring喜欢有两个 WebMvcConfigurationSupports 在相同的上下文中。很高兴在github上讨论，如果你想尝试找到改变它的方法（可能有一些中间立场）。

Your analysis is correct (@EnableWebMvc or directly extending WebMvcConfigurationSupport will switch off the WebMvcAutoConfiguration). I'm not sure what the alternative is, since a) we need a "get-out" clause for the autoconfig, and b) I don't think Spring likes to have two WebMvcConfigurationSupports in the same context. Happy to discuss on github if you want to try and find a way to change it (there might be some middle ground).

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