springboot2.6.7集成springfox3.0.0的示例代碼

更新時間：2024年04月29日 09:21:48 作者：阿湯哥

這篇文章主要介紹了springboot2.6.7集成springfox3.0.0的示例代碼,本文通過示例代碼給大家介紹的非常詳細,感興趣的朋友跟隨小編一起看看吧

springboot2.6.7集成springfox3.0.0

1. pom配置

<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>3.0.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>3.0.0</version>
</dependency>

2. 增加swagger自動配置類

import org.springframework.context.annotation.Configuration;
import springfox.documentation.oas.annotations.EnableOpenApi;
@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Bean
    public Docket api() {
        return new Docket(DocumentationType.OAS_30)
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.example.controller"))
                .build();
    }
	private SecurityScheme apiKey() {
        return new ApiKey("JWT", "Authorization", "header");
    }
}

此時嘗試啟動應用會提示一下錯誤：

Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException

Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException
       at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181)
       at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54)
       at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356)
       at java.lang.Iterable.forEach(Iterable.java:75)
       at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155)
       at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123)
       at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935)
       at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586)
       at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
       at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740)
       at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415)
       at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
       at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:175)
       at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:155)
       at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:97)
       at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:174)
       at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5221)
       at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
       ... 44 more
   Caused by: java.lang.NullPointerException
       at springfox.documentation.spring.web.WebMvcPatternsRequestConditionWrapper.getPatterns(WebMvcPatternsRequestConditionWrapper.java:56)
       at springfox.documentation.RequestHandler.sortedPaths(RequestHandler.java:113)
       at springfox.documentation.spi.service.contexts.Orderings.lambda$byPatternsCondition$3(Orderings.java:89)
       at java.util.Comparator.lambda$comparing$77a9974f$1(Comparator.java:469)
       at java.util.TimSort.countRunAndMakeAscending(TimSort.java:355)
       at java.util.TimSort.sort(TimSort.java:234)
       at java.util.Arrays.sort(Arrays.java:1512)
       at java.util.ArrayList.sort(ArrayList.java:1464)
       at java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:387)
       at java.util.stream.Sink$ChainedReference.end(Sink.java:258)
       at java.util.stream.Sink$ChainedReference.end(Sink.java:258)
       at java.util.stream.Sink$ChainedReference.end(Sink.java:258)
       at java.util.stream.Sink$ChainedReference.end(Sink.java:258)
       at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:483)
       at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
       at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
       at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
       at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
       at springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider.requestHandlers(WebMvcRequestHandlerProvider.java:81)
       at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
       at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384)
       at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
       at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
       at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
       at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
       at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
       at springfox.documentation.spring.web.plugins.AbstractDocumentationPluginsBootstrapper.withDefaults(AbstractDocumentationPluginsBootstrapper.java:107)
       at springfox.documentation.spring.web.plugins.AbstractDocumentationPluginsBootstrapper.buildContext(AbstractDocumentationPluginsBootstrapper.java:91)
       at springfox.documentation.spring.web.plugins.AbstractDocumentationPluginsBootstrapper.bootstrapDocumentationPlugins(AbstractDocumentationPluginsBootstrapper.java:82)
       at springfox.documentation.spring.web.plugins.DocumentationPluginsBootstrapper.start(DocumentationPluginsBootstrapper.java:100)
       at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178)
       ... 61 more

3. 配置修改

spring:
  mvc:
    pathmatch:
      matching-strategy: ant_path_matcher

4. 自動配置類增加以下內容

@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));
}

參考

Spring Boot 2.6.0 / Spring fox 3 - Failed to start bean ‘documentationPluginsBootstrapper

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