Springboot2.6.x高版本与Swagger2版本冲突问题解决方法

< dependency >

     < groupId >org.springframework.boot</ groupId >

     < artifactId >spring-boot-starter-web</ artifactId >

     < version >2.6.4</ version >

</ dependency >

< dependency >

     < groupId >io.springfox</ groupId >

     < artifactId >springfox-boot-starter</ artifactId >

     < version >3.0.0</ version >

</ dependency >

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.config.BeanPostProcessor;

import org.springframework.stereotype.Component;

import org.springframework.util.ReflectionUtils;

import org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping;

import springfox.documentation.spring.web.plugins.WebFluxRequestHandlerProvider;

import springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider;

import java.lang.reflect.Field;

import java.util.List;

import java.util.stream.Collectors;

@Component

public class SwaggerBeanPostProcessor implements BeanPostProcessor {

     @Override

     public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {

         if (bean instanceof WebMvcRequestHandlerProvider || bean instanceof WebFluxRequestHandlerProvider)

         {

             List<RequestMappingInfoHandlerMapping> handlerMappings = getHandlerMappings(bean);

             customizeSpringfoxHandlerMappings(handlerMappings);

         }

         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);

         }

     }

}

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import springfox.documentation.service.ApiInfo;

import springfox.documentation.spi.DocumentationType;

import springfox.documentation.spring.web.plugins.Docket;

@Configuration

public class Swagger2Config extends WebMvcConfigurationSupport {

     @Bean

     public Docket createRestApi() {

         return new Docket(DocumentationType.SWAGGER_2)

                 .apiInfo(ApiInfo.DEFAULT);

     }

     @Override

     public void addResourceHandlers(ResourceHandlerRegistry registry) {

         registry.

                 addResourceHandler( "/swagger-ui/**" )

                 .addResourceLocations( "classpath:/META-INF/resources/webjars/springfox-swagger-ui/" )

                 .resourceChain( false );

     }

}