swagger报错 at springfox.documentation.schema.Example.equals(Example.java:131)

最新推荐文章于 2024-04-23 09:10:36 发布

原创最新推荐文章于 2024-04-23 09:10:36 发布 · 1.7k 阅读

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本文介绍了一种解决Springfox中出现的NullPointerException异常的方法。该异常由实体类属性访问修饰符错误配置引起，通过修正实体类中private和public的使用，成功解决了启动时遇到的问题。

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java.lang.NullPointerException: null
	at springfox.documentation.schema.Example.equals(Example.java:131) ~[springfox-core-3.0.0.jar:3.0.0]
	at java.util.Objects.equals(Objects.java:59) ~[na:1.8.0_291]
	at springfox.documentation.service.RequestParameter.equals(RequestParameter.java:132) ~[springfox-core-3.0.0.jar:3.0.0]
	at java.util.HashMap.putVal(HashMap.java:648) ~[na:1.8.0_291]
	at java.util.HashMap.put(HashMap.java:612) ~[na:1.8.0_291]
	at java.util.HashSet.add(HashSet.java:220) ~[na:1.8.0_291]
	at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) ~[na:1.8.0_291]
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_291]
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[na:1.8.0_291]
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_291]
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384) ~[na:1.8.0_291]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) ~[na:1.8.0_291]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) ~[na:1.8.0_291]
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_291]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_291]
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_291]
	at springfox.documentation.spring.web.readers.operation.OperationParameterReader.apply(OperationParameterReader.java:93) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at springfox.documentation.spring.web.plugins.DocumentationPluginsManager.operation(DocumentationPluginsManager.java:144) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at springfox.documentation.spring.web.readers.operation.ApiOperationReader.read(ApiOperationReader.java:72) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at springfox.documentation.spring.web.scanners.CachingOperationReader.lambda$new$0(CachingOperationReader.java:43) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at java.util.HashMap.computeIfAbsent(HashMap.java:1127) ~[na:1.8.0_291]
	at springfox.documentation.spring.web.scanners.CachingOperationReader.read(CachingOperationReader.java:48) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at springfox.documentation.spring.web.scanners.ApiDescriptionReader.read(ApiDescriptionReader.java:72) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at springfox.documentation.spring.web.scanners.ApiListingScanner.scan(ApiListingScanner.java:169) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at springfox.documentation.spring.web.scanners.ApiDocumentationScanner.scan(ApiDocumentationScanner.java:67) ~[springfox-spring-web-3.0.0.jar:3.0.0]
	at springfox.documentation.spring.web.plugins.AbstractDocumentationPluginsBootstrapper.scanDocumentation(AbstractDocumentationPluginsBootstrapper.java:96) [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-5.3.2.jar:5.3.2]
	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) [spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) [spring-context-5.3.2.jar:5.3.2]
	at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_291]
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) [spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) [spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:940) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:591) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-2.4.1.jar:2.4.1]
	at com.augurit.AgcloudSwjApplication.main(AgcloudSwjApplication.java:30) ~[main/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_291]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_291]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_291]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_291]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.4.1.jar:2.4.1]

网上都是说同个接口参数字段相同，我发现的我的不是这个问题，检查之后发现同事把实体类private写成了public导致，改完重启，问题解决。