pom 配置如下
io.springfox springfox-boot-starter3.0.0
swagger 配置类
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket createRestApi(){
return new Docket(documentationType.SWAGGER_2)
.apiInfo(apiInfo()).select()
.apis(RequestHandlerSelectors.any())
.paths(PathSelectors.any())
.build();
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder().build();
}
}
启动应用会报错
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) ~[spring-context-5.3.10.jar:5.3.10]
at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.10.jar:5.3.10]
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.10.jar:5.3.10]
at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.10.jar:5.3.10]
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.10.jar:5.3.10]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.10.jar:5.3.10]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.10.jar:5.3.10]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.6.0-20211001.062147-315.jar:2.6.0-SNAPSHOT]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:719) ~[spring-boot-2.6.0-20211001.062147-315.jar:2.6.0-SNAPSHOT]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:401) ~[spring-boot-2.6.0-20211001.062147-315.jar:2.6.0-SNAPSHOT]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:302) ~[spring-boot-2.6.0-20211001.062147-315.jar:2.6.0-SNAPSHOT]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) ~[spring-boot-2.6.0-20211001.062147-315.jar:2.6.0-SNAPSHOT]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1279) ~[spring-boot-2.6.0-20211001.062147-315.jar:2.6.0-SNAPSHOT]
at com.wythe.mango.MangoApplication.main(MangoApplication.java:10) ~[classes/:na]
Caused by: java.lang.NullPointerException: null
at springfox.documentation.spring.web.WebMvcPatternsRequestConditionWrapper.getPatterns(WebMvcPatternsRequestConditionWrapper.java:56) ~[springfox-spring-webmvc-3.0.0.jar:3.0.0]
at springfox.documentation.RequestHandler.sortedPaths(RequestHandler.java:113) ~[springfox-core-3.0.0.jar:3.0.0]
at springfox.documentation.spi.service.contexts.Orderings.lambda$byPatternsCondition$3(Orderings.java:89) ~[springfox-spi-3.0.0.jar:3.0.0]
at java.base/java.util.Comparator.lambda$comparing$77a9974f$1(Comparator.java:469) ~[na:na]
at java.base/java.util.TimSort.countRunAndMakeAscending(TimSort.java:355) ~[na:na]
at java.base/java.util.TimSort.sort(TimSort.java:220) ~[na:na]
at java.base/java.util.Arrays.sort(Arrays.java:1515) ~[na:na]
at java.base/java.util.ArrayList.sort(ArrayList.java:1749) ~[na:na]
at java.base/java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:392) ~[na:na]
at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:na]
at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:na]
at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:na]
at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na]
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na]
at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na]
at springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider.requestHandlers(WebMvcRequestHandlerProvider.java:81) ~[springfox-spring-webmvc-3.0.0.jar:3.0.0]
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) ~[na:na]
at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1654) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[na:na]
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na]
at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[na:na]
at springfox.documentation.spring.web.plugins.AbstractdocumentationPluginsBootstrapper.withDefaults(AbstractdocumentationPluginsBootstrapper.java:107) ~[springfox-spring-web-3.0.0.jar:3.0.0]
at springfox.documentation.spring.web.plugins.AbstractdocumentationPluginsBootstrapper.buildContext(AbstractdocumentationPluginsBootstrapper.java:91) ~[springfox-spring-web-3.0.0.jar:3.0.0]
at springfox.documentation.spring.web.plugins.AbstractdocumentationPluginsBootstrapper.bootstrapdocumentationPlugins(AbstractdocumentationPluginsBootstrapper.java:82) ~[springfox-spring-web-3.0.0.jar:3.0.0]
at springfox.documentation.spring.web.plugins.documentationPluginsBootstrapper.start(documentationPluginsBootstrapper.java:100) ~[springfox-spring-web-3.0.0.jar:3.0.0]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-5.3.10.jar:5.3.10]
... 14 common frames omitted
修复方法：注解 EnableSwagger2 改为 EnableWebMvc
参考信息 Springfox Reference documentation
