Spring Boot内容协商配置

Question

我在使用spring-boot配置内容协商时遇到困难。我想保留大多数默认的spring-boot配置。我遵循了以下 https://spring.io/blog/2013/05/11/content-negotiation-using-spring-mvc/， 而不是最近的教程。目前，当我发送application/json或txt/html的请求时，视图似乎没有解决，但是当我打开视图时，@EnableWebMvc它似乎得到了解决。以下是我当前的配置。@Configuration // according to the spring-boot docs this should be enough with spring-boot//@EnableWebMvc  If I enable this content-negotiation seems to work without any configuration, but I loose the default spring-boot configurationpublic class MvcConfiguration implements WebMvcConfigurer {    @Bean(name = "jsonViewResolver")    public ViewResolver getJsonViewResolver() {        return new JsonViewResolver();    }    @Override    public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {    // Simple strategy: only path extension is taken into account        configurer.favorPathExtension(true)            .defaultContentType(MediaType.TEXT_HTML)            .mediaType("html", MediaType.TEXT_HTML)            .mediaType("json", MediaType.APPLICATION_JSON);}    @Bean    public ViewResolver contentNegotiatingViewResolver(ContentNegotiationManager manager) {        ContentNegotiatingViewResolver resolver = newContentNegotiatingViewResolver();        resolver.setContentNegotiationManager(manager);        return resolver;    }}

Answer 1

您没有在内容协商管理器中注册解析器。

请尝试以下修改：

@Bean

public ViewResolver contentNegotiatingViewResolver(ContentNegotiationManager manager){

  ContentNegotiatingViewResolver resolver = newContentNegotiatingViewResolver();

  resolver.setContentNegotiationManager(manager);

  List<ViewResolver> resolvers = new ArrayList<>();

  ViewResolver aViewResolver = getJsonViewResolver();

  resolvers.add(aViewResolver);

  resolver.setViewResolvers(resolvers);

  return resolver;

}