WebMvcConfigurationSupport 在 SpringBoot 中产生错误

Question

我正在对其余部分进行版本控制 api。我在这里找到了一个很好的方法：

https://github.com/augusto/restVersioning

@RestController
@RequestMapping("/user")
@VersionedResource(media = Version.MEDIA)
public class UserController {

    @Autowired
    private UserService userService;


    @GetMapping("")
    @VersionedResource(from = "1.0", to = "1.9")
    public String getUser() {
        return "user v1";
    }

    @GetMapping("")
    @VersionedResource(from = "2.0")
    public String getUserV2() {
        return "user v2";
    }

效果很好，但要做到这一点需要 class 扩展 WebMvcConfigurationSupport:

@Configuration
public class WebConfiguration extends WebMvcConfigurationSupport {
    @Autowired
    private ContentNegotiationManager contentNegotiationManager;

    @Bean
    public RequestMappingHandlerMapping requestMappingHandlerMapping() {
        VersionRequestMappingHandlerMapping handlerMapping = new VersionRequestMappingHandlerMapping();
        handlerMapping.setOrder(0);
        handlerMapping.setRemoveSemicolonContent(false);
        handlerMapping.setContentNegotiationManager(contentNegotiationManager);

        return handlerMapping;
    }
}

这会产生许多奇怪的错误，例如新的 LazyInitializationException、更改日期格式、带有 uri 参数的错误...即使我将此 class 留空，它也会产生错误并且版本控制将被禁用。当我评论此 extends WebMvcConfigurationSupport 时，一切都再次正常运行，当然，除了版本控制被禁用。所以我确定错误来自这里。

那么问题来了，为什么WebMvcConfigurationSupport会报错，我有哪些解决办法呢？谢谢

Answer 1

解决方案是使用 WebMvcRegistrations 而不是 WebMvcConfigurationSupport，因为它会禁用自动配置。

 @Configuration
public class WebConfiguration implements WebMvcRegistrations {

    @Autowired
    private ContentNegotiationManager contentNegotiationManager;

    @Override
    public RequestMappingHandlerMapping getRequestMappingHandlerMapping() {
        VersionRequestMappingHandlerMapping handlerMapping = new VersionRequestMappingHandlerMapping();
        handlerMapping.setOrder(0);
        handlerMapping.setRemoveSemicolonContent(false);
        handlerMapping.setContentNegotiationManager(contentNegotiationManager);

        return handlerMapping;

    }
}

WebMvcConfigurationSupport 在 SpringBoot 中产生错误

WebMvcConfigurationSupport produce errors in SpringBoot

versioning

rest

spring

spring-mvc

spring-boot