无法处理配置类的导入候选 [springfox.documentation.swagger2.configuration.Swagger2DocumentationConfiguration]

Question

 package com.nissan.common.config; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; 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.swagger2.annotations.EnableSwagger2; @Configuration @EnableSwagger2 @ComponentScan @Slf4j public class SwaggerConfig { @Value("${swagger.api.controller.basepackage}") private String basePackage; @Bean public Docket swaggerApi() { log.info("Swagger Api loaded"); return new Docket(DocumentationType.SWAGGER_2) .select() .apis(RequestHandlerSelectors.basePackage(basePackage)) .paths(PathSelectors.any()) .build(); } }

2022-07-05 17:24:53.527 WARN 6444 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [springfox.documentation.swagger2.configuration.Swagger2DocumentationConfiguration]; nested exception is java.io.FileNotFoundException: class path resource [springfox/documentation/spi/service/ResourceGroupingStrategy.class] cannot be opened because it does not exist 2022-07-05 17:24:53.536 INFO 6444 --- [ main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2022-07-05 17:24:53.559 ERROR 6444 --- [ main] osboot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [springfox.documentation.swagger2.configuration.Swagger2DocumentationConfiguration]; nested exception is java.io.FileNotFoundException: class path resource [springfox/documentation/spi/service/ResourceGroupingStrategy.class] cannot be opened because it does not exist at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:610) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:311) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:250) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:600) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:311) ~[spring-context-5.3.12.jar:5.3.12] at org.springfr amework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:250) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:199) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:304) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:250) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:207) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:175) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBe anDefinitions(ConfigurationClassPostProcessor.java:331) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:247) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564) ~[spring-context-5.3.12.jar:5.3.12] at org.springframework. boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.6.jar:2.5.6] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) [spring-boot-2.5.6.jar:2.5.6] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) [spring-boot-2.5.6.jar:2.5.6] at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.5.6.jar:2.5.6] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) [spring-boot-2.5.6.jar:2.5.6] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) [spring-boot-2.5.6.jar:2.5.6]

Answer 1

For the Spring Boot based projects, it's enough to add a single springfox-boot-starter dependency:

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-boot-starter</artifactId>
    <version>3.0.0</version>
</dependency>