@Bean
    public WebMvcConfigurer webMvcConfigurer(){
        return new WebMvcConfigurer() {
            /**
             * 自定義內容協商策略
             * @param configurer
             */
            @Override
            public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
                // 自定義策略
                // ContentNegotiationConfigurer mediaTypes(@Nullable Map<String, MediaType> mediaTypes)
                Map<String, MediaType> map = new HashMap<>();
                map.put("json", MediaType.APPLICATION_JSON);
                map.put("xml", MediaType.APPLICATION_ATOM_XML);
                map.put("gg",MediaType.parseMediaType("applicaion/x-z"));
                // 指定基於引數的解析型別
                ParameterContentNegotiationStrategy negotiationStrategy = new ParameterContentNegotiationStrategy(map);
                // 指定基於請求頭的解析
                HeaderContentNegotiationStrategy headerContentNegotiationStrategy = new HeaderContentNegotiationStrategy();
                configurer.strategies(Arrays.asList(negotiationStrategy));
            }
        };
    }