@Bean
public WebMvcConfigurer webMvcConfigurer(){
    /**
             * 实现自定义的addConverter
             */
            @Override
            public void addFormatters(FormatterRegistry registry) {
                registry.addConverter(new Converter<String, Pet>() {
                    @Override
                    public Pet convert(String source) {
                        if (StringUtils.hasText(source)){
                            Pet pet = new Pet();
                            // 按照传参的 “，” 符号分割
                            // 
                            String[] split = source.split(",");
                            pet.setName(split[0]);
                            pet.setAge(Integer.parseInt(split[1]));
                            return pet;
                        }
                        return null;
                    }
                });
            }
}