Springboot 2.6.2 整合knife4j 报错解决

yml增加配置

spring:
  mvc:
    pathmatch:
      matching-strategy: ANT_PATH_MATCHER

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依赖

   <!-- Knife4j -->
        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
            <version>3.0.3</version>
        </dependency>


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SwaggerConfig 增加@Bean BeanPostProcessor

/*
 *
 *  * ******************************************************************************
 *  *
 *  *                       test PROPRIETARY INFORMATION
 *  *
 *  *           The information contained herein is proprietary to test
 *  *            and shall not be reproduced or disclosed in whole or in part
 *  *                     or used for any design or manufacture
 *  *               without direct written authorization from FengDa.
 *  *
 *  *             Copyright (c) 2021 by test.  All rights reserved.
 *  *
 *  * ******************************************************************************
 *
 */

package com.stationdm.idm.portal.config;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.util.ReflectionUtils;
import org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.spring.web.plugins.WebFluxRequestHandlerProvider;
import springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.lang.reflect.Field;
import java.util.List;

/**
 * @author lufeng
 * @date 2021-10-07 12:03
 */
@Configuration
@EnableSwagger2
@Profile({"dev"})
public class SwaggerConfig {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .groupName("Public API")
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.stationdm.idm.portal.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("portal系统")
                .description("代码标准化示例工程接口服务")
                .termsOfServiceUrl("https://www.test.com/")
                .version("1.0")
                .build();
    }

    @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) {
                mappings.removeIf(mapping -> mapping.getPatternParser() != null);
            }

            @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);
                }
            }
        };
    }

}


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解决参考链接

https://gitee.com/xiaoym/knife4j/issues/I4JT89

https://blog.csdn.net/QIU176161650/article/details/122111567?utm_medium=distribute.pc_relevant.none-task-blog-2_defaultbaidujs_title~default-0.pc_relevant_default&spm=1001.2101.3001.4242.1&utm_relevant_index=3