java.lang.ClassNotFoundException: org.mapstruct.factory.Mappers

swagger version : 3.0 <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-boot-starter</artifactId> <version>3.0.0</version> </dependency> springboot version : 2.3.0.RELEASE After packaging java -jar xxx.jar start error ` info : 2020-11-12 11:01:22.189 INFO 94730 — [ main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled. 2020-11-12 11:01:22.195 ERROR 94730 — [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘requestParameterMapperImpl’ defined in URL [jar:file:/Users/xingwangma/LOD/portal/designer-backend/tnt/target/lib/springfox-swagger2-3.0.0.jar!/springfox/documentation/swagger2/mappers/RequestParameterMapperImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [springfox.documentation.swagger2.mappers.RequestParameterMapperImpl]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/mapstruct/factory/Mappers at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1320) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:895) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE] at com.bigknow.tnt.TntApplication.main(TntApplication.java:26) [classes!/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191] at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) [tnt-1.0-SNAPSHOT.jar:na] at org.springframework.boot.loader.Launcher.launch(Launcher.java:109) [tnt-1.0-SNAPSHOT.jar:na] at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) [tnt-1.0-SNAPSHOT.jar:na] at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) [tnt-1.0-SNAPSHOT.jar:na] Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [springfox.documentation.swagger2.mappers.RequestParameterMapperImpl]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/mapstruct/factory/Mappers at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:217) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1312) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] … 26 common frames omitted Caused by: java.lang.NoClassDefFoundError: org/mapstruct/factory/Mappers at springfox.documentation.swagger2.mappers.RequestParameterMapper.<init>(RequestParameterMapper.java:45) ~[springfox-swagger2-3.0.0.jar:3.0.0] at springfox.documentation.swagger2.mappers.RequestParameterMapperImpl.<init>(RequestParameterMapperImpl.java:13) ~[springfox-swagger2-3.0.0.jar:3.0.0] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_191] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_191] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_191] at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_191] at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:204) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] … 28 common frames omitted Caused by: java.lang.ClassNotFoundException: org.mapstruct.factory.Mappers at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_191] at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_191] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_191] at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_191] … 35 common frames omitted `

[ITman1]

@HeavensRegent MapStruct already included this into FAQ 😉. Check https://mapstruct.org/faq/#Why-do-I-get-this-error-Could-not-retrieve-Mapper-annotation-during-compilation

[Azork]

Same issue upgrading spring boot from 2.5 to 2.6. Invalidating the cache didn’t work mapstruct excluded from spring fox (as before) using mapstruct-jdk8