java

关注公众号 jb51net

关闭
首页 > 软件编程 > java > Springboot2.6.x与Swagger2版本冲突

Springboot2.6.x高版本与Swagger2版本冲突问题解决方法

作者:cd4479163

Spring Boot 2.6.x版本引入依赖 springfox-boot-starter (Swagger 3.0) 后,启动容器会报错,本文就介绍一下Springboot2.6.x高版本与Swagger2版本冲突问题解决方法,感兴趣的可以了解一下

问题: 

Spring Boot 2.6.x版本引入依赖 springfox-boot-starter (Swagger 3.0) 后,启动容器会报错: 

Failed to start bean ‘ documentationPluginsBootstrapper ‘ ; nested exception… 

原因

Springfox 假设 Spring MVC 的路径匹配策略是 ant-path-matcher,而 Spring Boot 2.6.x版本的默认匹配策略是 path-pattern-matcher,这就造成了上面的报错。

完整解决方案:

1. pom配置

<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>

2. 添加Bean

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);
        }
    }
}

 3. swagger配置类继承 WebMvcConfigurationSupport

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);
    }
}

 4. 访问 http://{ip}:{port}/swagger-ui/index.html

当然还是要感谢技术大佬,我只会汇总解决了治本的完整解决方法

到此这篇关于Springboot2.6.x高版本与Swagger2版本冲突问题解决方法的文章就介绍到这了,更多相关Springboot2.6.x与Swagger2版本冲突内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

您可能感兴趣的文章:
阅读全文