springboot2.7.3与springfox 3.0 ：PatternsRequestCondition.getPatterns()” because “this.condition”is nu

原创已于 2023-04-22 19:09:56 修改 · 1.5k 阅读

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#servlet #java #spring

于 2023-04-22 19:06:23 首次发布

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完整异常信息：
Cannot invoke “org.springframework.web.servlet.mvc.condition.PatternsRequestCondition.getPatterns()” because “this.condition” is null

异常场景：
springboot2.7.3 搭配 springfox 3.0.0

出现原因：
springfox 3.0.0 错误导致

解决办法：

配置文件中加入

spring: 
  mvc:
    pathmatch:
      matching-strategy: ant_path_matcher

swagger 配置类：


/**
 * Swagger配置文件。 [Springfox官方集成文档](http://springfox.github.io/springfox/docs/current/)
 * [Swagger注解官方文档](https://github.com/swagger-api/swagger-core/wiki/Annotations-1.5.X)
 *
 * <p>配置注意事项： 1. swagger及swagger-ui的添加，注意版本 2. 该config文件的注解添加，@Configuration与@EnableSwagger2为必须添加 3.
 * 配置servlet-mapping为"/"，因为会生成静态文件，因此需要注意路径穿透
 */
@EnableOpenApi
@Configuration
public class SwaggerConfig {

  /**
   * 配置基本信息
   *
   * @return
   */
  @Bean
  public ApiInfo apiInfo() {
    return new ApiInfoBuilder()
        .title("Swagger Test App Restful API")
        .description("swagger test app restful api")
        .termsOfServiceUrl("https://github.com/xxx")
        .contact(
            new Contact("我是顾子晨", "https://blog.youkuaiyun.com/gu_zhang_w?type=blog", "my@hotmail.com"))
        .version("1.0")
        .build();
  }

  /**
   * 配置文档生成最佳实践
   *
   * @param apiInfo
   * @return
   */
  @Bean
  public Docket createRestApi(ApiInfo apiInfo) {
    return new Docket(DocumentationType.OAS_30)
        .apiInfo(apiInfo)
        .groupName("SwaggerGroupOneAPI")
        .select()
        .apis(RequestHandlerSelectors.withClassAnnotation(RestController.class))
        .paths(PathSelectors.any())
        .build();
  }

  /** 增加如下配置可解决Spring Boot 6.x 与Swagger 3.0.0 不兼容问题 */
  @Bean
  public WebMvcEndpointHandlerMapping webEndpointServletHandlerMapping(
      WebEndpointsSupplier webEndpointsSupplier,
      ServletEndpointsSupplier servletEndpointsSupplier,
      ControllerEndpointsSupplier controllerEndpointsSupplier,
      EndpointMediaTypes endpointMediaTypes,
      CorsEndpointProperties corsProperties,
      WebEndpointProperties webEndpointProperties,
      Environment environment) {
    List<ExposableEndpoint<?>> allEndpoints = new ArrayList();
    Collection<ExposableWebEndpoint> webEndpoints = webEndpointsSupplier.getEndpoints();
    allEndpoints.addAll(webEndpoints);
    allEndpoints.addAll(servletEndpointsSupplier.getEndpoints());
    allEndpoints.addAll(controllerEndpointsSupplier.getEndpoints());
    String basePath = webEndpointProperties.getBasePath();
    EndpointMapping endpointMapping = new EndpointMapping(basePath);
    boolean shouldRegisterLinksMapping =
        this.shouldRegisterLinksMapping(webEndpointProperties, environment, basePath);
    return new WebMvcEndpointHandlerMapping(
        endpointMapping,
        webEndpoints,
        endpointMediaTypes,
        corsProperties.toCorsConfiguration(),
        new EndpointLinksResolver(allEndpoints, basePath),
        shouldRegisterLinksMapping,
        null);
  }

  private boolean shouldRegisterLinksMapping(
      WebEndpointProperties webEndpointProperties, Environment environment, String basePath) {
    return webEndpointProperties.getDiscovery().isEnabled()
        && (StringUtils.hasText(basePath)
            || ManagementPortType.get(environment).equals(ManagementPortType.DIFFERENT));
  }
}