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Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException

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Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException解决方法

在springboot升级到2.6.x以后,集成swagger3的时候启动会出现这个问题

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-5.3.17.jar:5.3.17]
    at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.17.jar:5.3.17]
    at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.17.jar:5.3.17]
    at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_202]
    at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.17.jar:5.3.17]
    at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.17.jar:5.3.17]
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.17.jar:5.3.17]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.17.jar:5.3.17]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.6.5.jar:2.6.5]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [spring-boot-2.6.5.jar:2.6.5]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [spring-boot-2.6.5.jar:2.6.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-2.6.5.jar:2.6.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [spring-boot-2.6.5.jar:2.6.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [spring-boot-2.6.5.jar:2.6.5]
    at top.wangqi.server.ApplicationStarter.main(ApplicationStarter.java:23) [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$3(Orderings.java:89) ~[springfox-spi-3.0.0.jar:3.0.0]
    at java.util.Comparator.lambda$comparing$77a9974f$1(Comparator.java:469) ~[na:1.8.0_202]
    at java.util.TimSort.countRunAndMakeAscending(TimSort.java:355) ~[na:1.8.0_202]
    at java.util.TimSort.sort(TimSort.java:220) ~[na:1.8.0_202]
    at java.util.Arrays.sort(Arrays.java:1512) ~[na:1.8.0_202]
    at java.util.ArrayList.sort(ArrayList.java:1462) ~[na:1.8.0_202]
    at java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:387) ~[na:1.8.0_202]
    at java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:1.8.0_202]
    at java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:1.8.0_202]
    at java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:1.8.0_202]
    at java.util.stream.Sink$ChainedReference.end(Sink.java:258) ~[na:1.8.0_202]
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) ~[na:1.8.0_202]
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_202]
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_202]
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_202]
    at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_202]
    at springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider.requestHandlers(WebMvcRequestHandlerProvider.java:81) ~[springfox-spring-webmvc-3.0.0.jar:3.0.0]
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_202]
    at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382) ~[na:1.8.0_202]
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_202]
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_202]
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_202]
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_202]
    at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_202]
    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-5.3.17.jar:5.3.17]
    ... 14 common frames omitted

Disconnected from the target VM, address: '127.0.0.1:49750', transport: 'socket'

Process finished with exit code 1

网上找了一大推,都是改什么WebMvcConfigurer,纯粹胡扯哇,如果这个改了,之后的所有的请求转发和重定向都要在这里进行配置,不然访问不到的。
经过在springfox的github的项目下的#issues3462下查找发现只需要修改配置文件即可

file

file

这样子就行了
看完如果对你有帮助记得点个赞哦

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