1、pom文件添加依赖

        <!-- swagger-ui -->
        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
            <version>3.0.2</version>
        </dependency>
        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-ui</artifactId>
            <version>3.0.2</version>
        </dependency>

2、添加配置文件

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.service.Contact;
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 javax.annotation.Nonnull;
import java.lang.reflect.Field;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 类 名 称：SwaggerConfig
 * 类 描 述：Swagger配置
 * 创建时间：2024/4/3 10:11
 * 创 建 人：ZZP
 */
@EnableSwagger2
@EnableKnife4j
/**
 * Spring Boot 2.6 与 swagger 不兼容解决
 */
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(WebMvcRequestHandlerProvider.class)
public class SwaggerConfig {
    @Value("${chenxi.swagger.enable:false}")
    private Boolean swaggerEnable;

    /**
     * Spring Boot 2.6 与 swagger 不兼容解决
     */
    @Bean
    public static BeanPostProcessor springfoxHandlerProviderBeanPostProcessor() {
        return new BeanPostProcessor() {

            @Override
            public Object postProcessAfterInitialization(@Nonnull Object bean, @Nonnull 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);
                }
            }
        };
    }

    @Bean(value = "defaultApi2")
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .enable(swaggerEnable)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.*.*.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("数据质量服务")
                .contact(new Contact("颜人中", "/doc.html", "honglei_chen@dnt.com.cn"))
                .description("***接口,是一个规范和完整的框架，用于生成、描述、调用和可视化 RESTful 风格的 Web 服务。")
                .version("1.0")
                .build();
    }
}

3、WebMvcConfig放行

@Configuration
@EnableWebMvc
@Slf4j
public class WebMvcConfig implements WebMvcConfigurer {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

}

4、访问地址：ip:端口/doc.html