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当切换到 Java 9 时，Spring Boot 的 javax.xml.bind.JAXBException 的 ClassNotFoundException

社区维基
1
新手上路，请多包涵

使用 start.spring.io 初始化项目

添加了 WEB、JPA、H2 依赖项，然后尝试使用 --- 运行 MainApplication.java Jdk 9 并得到以下 错误日志

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |___, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::       (v1.5.10.RELEASE)

2018-02-26 16:23:33.973  INFO 3860 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication v0.0.1-SNAPSHOT on RAJAT-PC with PID 3860 (C:\Users\devra\Downloads\Compressed\demo\target\demo-0.0.1-SNAPSHOT.jar started by rajat in C:\Users\devra\Downloads\Compressed\demo\target)
2018-02-26 16:23:33.973  INFO 3860 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
2018-02-26 16:23:34.254  INFO 3860 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@1aa7ecca: startup date [Mon Feb 26 16:23:34 IST 2018]; root of context hierarchy
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils$1 (jar:file:/C:/Users/devra/Downloads/Compressed/demo/target/demo-0.0.1-SNAPSHOT.jar!/BOOT-INF/lib/spring-core-4.3.14.RELEASE.jar!/) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2018-02-26 16:23:38.429  INFO 3860 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$1c55a85e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-02-26 16:23:39.856  INFO 3860 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2018-02-26 16:23:39.888  INFO 3860 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2018-02-26 16:23:39.903  INFO 3860 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.27
2018-02-26 16:23:40.247  INFO 3860 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-02-26 16:23:40.247  INFO 3860 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 6024 ms
2018-02-26 16:23:40.622  INFO 3860 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-02-26 16:23:40.622  INFO 3860 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-02-26 16:23:40.622  INFO 3860 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-02-26 16:23:40.622  INFO 3860 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-02-26 16:23:40.622  INFO 3860 --- [ost-startStop-1] .s.DelegatingFilterProxyRegistrationBean : Mapping filter: 'springSecurityFilterChain' to: [/*]
2018-02-26 16:23:40.622  INFO 3860 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2018-02-26 16:23:40.622  INFO 3860 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'webServlet' to [/h2-console/*]
2018-02-26 16:23:42.200  INFO 3860 --- [           main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2018-02-26 16:23:42.263  INFO 3860 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [
        name: default
        ...]
2018-02-26 16:23:42.591  INFO 3860 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate Core {5.0.12.Final}
2018-02-26 16:23:42.607  INFO 3860 --- [           main] org.hibernate.cfg.Environment            : HHH000206: hibernate.properties not found
2018-02-26 16:23:42.607  INFO 3860 --- [           main] org.hibernate.cfg.Environment            : HHH000021: Bytecode provider name : javassist
2018-02-26 16:23:42.653  WARN 3860 --- [           main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException
2018-02-26 16:23:42.669  INFO 3860 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2018-02-26 16:23:42.716  INFO 3860 --- [           main] utoConfigurationReportLoggingInitializer :

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-02-26 16:23:42.747 ERROR 3860 --- [           main] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1080) ~[spring-context-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:857) ~[spring-context-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.10.RELEASE.jar!/:1.5.10.RELEASE]
        at com.example.demo.DemoApplication.main(DemoApplication.java:10) [classes!/:0.0.1-SNAPSHOT]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
        at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [demo-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [demo-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [demo-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [demo-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
Caused by: java.lang.NoClassDefFoundError: javax/xml/bind/JAXBException
        at org.hibernate.boot.spi.XmlMappingBinderAccess.<init>(XmlMappingBinderAccess.java:43) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
        at org.hibernate.boot.MetadataSources.<init>(MetadataSources.java:87) ~[hibernate-core-5.0.12.Final.jar!/:5.0.12.Final]
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:179) ~[hibernate-entitymanager-5.0.12.Final.jar!/:5.0.12.Final]
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:149) ~[hibernate-entitymanager-5.0.12.Final.jar!/:5.0.12.Final]
        at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:54) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:360) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:382) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:371) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:336) ~[spring-orm-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ~[spring-beans-4.3.14.RELEASE.jar!/:4.3.14.RELEASE]
        ... 24 common frames omitted
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.JAXBException
        at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466) ~[na:na]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:563) ~[na:na]
        at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:94) ~[demo-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496) ~[na:na]
        ... 35 common frames omitted

然后我切换到 jdk 8，它工作正常。

同样的事情发生在 Spring-boot 2.0.0 RC2 上

当 spring doc 提到所需的 Java 版本为 8 或 9 时，为什么会发生这种情况。

原文由 Rajat 发布，翻译遵循 CC BY-SA 4.0 许可协议

Stack Overflow 翻译javaspringspring-bootjava-9
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社区维基
1
✓ 已被采纳

您需要添加 JAXB 依赖项（在 Java 9 中不再默认提供）并且 您必须 使用 Spring Boot 2：

 <dependency>
    <groupId>javax.xml.bind</groupId>
     <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
 </dependency>

请注意，如果您使用 Java 10，您将遇到完全相同的问题，因为 JAXB 依赖项删除并非仅针对 Java 9 版本完成。

有关 Java 9 及更高版本的 Spring Boot wiki 列出了在 Java 9 及更高版本上运行 Spring Boot 应用程序所需了解的事项。

Spring Boot 版本要求

  • Spring Boot 1 不支持它（并且没有计划）。
  • Spring Boot 2 支持它。

Spring Boot 2 是第一个支持 Java 9 的版本（也支持 Java 8）。如果您正在使用 1.5 并希望使用 Java 9，您应该升级到 2.0，因为我们没有计划在 Spring Boot 1.5.x 上支持 Java 9。

从 Spring Boot 2.0.1.RELEASE 开始支持 Java 10 ，从 Spring Boot 2.1.0.M2 开始 支持 Java 11 。

一些已知的解决方法

看点J

使用 Java 9，如果需要从 JDK 编织类，则需要使用 AspectJ 1.9。在大多数情况下，Spring AOP 应该可以与 AspectJ 1.8（Spring Boot 2.0 中的默认设置）一起正常工作。

日本航空航天局

升级时您可能会遇到以下情况：

java.lang.NoClassDefFoundError：javax/xml/bind/JAXBException

Hibernate 通常需要不再默认提供的 JAXB。您可以添加 java.xml.bind 模块以使用 Java9 或 Java10 恢复此功能（即使该模块已弃用）。

 <dependency>
    <groupId>javax.xml.bind</groupId>
     <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
 </dependency>

从 Java11 开始，该模块不可用，因此您唯一的选择是添加 JAXB RI（从 Java9 开始，您可以这样做，而不是添加 java.xml.bind 模块：

 <dependency>
    <groupId>org.glassfish.jaxb</groupId>
    <artifactId>jaxb-runtime</artifactId>
</dependency>

龙目岛

如果您使用的是 lombok，则 Spring Boot 的托管版本可能无法与最新的 JDK 一起使用。检查 Lombok 网站并在必要时覆盖其版本。

一些已知的限制

这些库尚不完全支持 Java 9：

  • 阿帕奇卡桑德拉，见#10453

如果 Java 9 及更高版本与 Spring Boot 的兼容性发生变化，请不要犹豫编辑这篇文章。

原文由 davidxxx 发布，翻译遵循 CC BY-SA 4.0 许可协议

社区维基
1

添加以下依赖项并解决问题

<dependency>
    <groupId>javax.xml.bind</groupId>
     <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
 </dependency>

原文由 Lokesh 发布，翻译遵循 CC BY-SA 4.0 许可协议

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