SpringBoot2.7.2 版本配置swagger3的方法及教程

对SpringBoot2.7.2版本，swagger2.x版本不再适用，所以就选择了swagger3版本，但是相较于swagger2版本，swagger3版本更加麻烦，具体教程如下：

    io.springfox
    springfox-boot-starter
    3.0.0

@EnableOpenApi
public class TestApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestApplication.class, args);
    }
}

import com.google.common.base.Predicates;
import io.swagger.annotations.ApiOperation;
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.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.oas.annotations.EnableOpenApi;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider;
import java.lang.reflect.Field;
import java.util.List;
import java.util.stream.Collectors;
@Configuration
@EnableOpenApi
public class SwaggerConfiguration {
    @Bean
    public Docket createRestApi(){
        System.out.println("11111111111111111111111111111");
        return new Docket(DocumentationType.OAS_30)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
                .paths(PathSelectors.any())
                .build();

    }
    private ApiInfo apiInfo(){
        return new ApiInfoBuilder()
                .title("Swagger3接口文档")
                .description("前后端分离的接口文档")
                .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) {
                    customizeSpringfoxHandlerMappings(getHandlerMappings(bean));
                }
                return bean;
            }

            private  void customizeSpringfoxHandlerMappings(
                    List mappings) {
                List copy = mappings.stream().filter(mapping -> mapping.getPatternParser() == null)
                        .collect(Collectors.toList());
                mappings.clear();
                mappings.addAll(copy);
            }

            @SuppressWarnings("unchecked")
            private List getHandlerMappings(Object bean) {
                try {
                    Field field = ReflectionUtils.findField(bean.getClass(), "handlerMappings");
                    field.setAccessible(true);
                    return (List) field.get(bean);
                }
                catch (IllegalArgumentException | IllegalAccessException e) {
                    throw new IllegalStateException(e);
                }
            }
        };
    }
}

spring.mvc.pathmatch.matching-strategy=ant_path_matcher

http:/localhost:8080/swagger-ui/index.html

注意：swagger2的网页路径为http:/localhost:8080/swagger-ui.html