swagger3.0+spring boot2.6的坑

1.前提

swagger3.0 、spring boot 2.6+

现象1:页面可以访问，但是接口不显示

解决方案:

添加配置:

# 这是因为Springfox使用的路径匹配是基于AntPathMatcher的
# 而Spring Boot 2.6.X使用的是PathPatternMatcher。
spring:  
  mvc:    
    pathmatch:      
      matching-strategy: ant_path_matcher

​

现象2:

启动项目时报错空指针，部分可能会识别循环依赖注入的问题，添加以下bean配置即可

@Bean
    public static BeanPostProcessor springfoxHandlerProviderBeanPostProcessor() {
        return new BeanPostProcessor() {
            @Override
            public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
                if (bean instanceof WebMvcRequestHandlerProvider || bean instanceof WebFluxRequestHandlerProvider) {
                    customizeSpringfoxHandlerMappings(getHandlerMappings(bean));                }
                return bean;
            }
            private <T extends RequestMappingInfoHandlerMapping> void customizeSpringfoxHandlerMappings(List<T> mappings) {
                List<T> copy = mappings.stream()
                        .filter(mapping -> mapping.getPatternParser() == null)
                        .collect(Collectors.toList());
                mappings.clear();
                mappings.addAll(copy);
            }
            @SuppressWarnings("unchecked")
            private List<RequestMappingInfoHandlerMapping> getHandlerMappings(Object bean) {
                try {
                    Field field = ReflectionUtils.findField(bean.getClass(), "handlerMappings");
                    field.setAccessible(true);
                    return (List<RequestMappingInfoHandlerMapping>) field.get(bean);
                } catch (IllegalArgumentException | IllegalAccessException e) {
                    throw new IllegalStateException(e);
                }
            }
        };
    }