带有 Google AutoValue 和 spring-context-support 的 LogFactory ClassNotFoundException

Question

一个Spring引导项目依赖于auto-value 1.1和spring-context-support 4.2.1。当我运行它与 mvn spring-boot:run 时，我看到以下错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'velocityConfigurer' defined in class path resource [org/springframework/boot/autoconfigure/velocity/VelocityAutoConfiguration$VelocityWebConfiguration.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: autovalue/shaded/org/apache/commons/logging/LogFactory
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:303)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
    at com.example.SampleApplication.main(SampleApplication.java:10)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at org.springframework.boot.maven.RunMojo$LaunchRunner.run(RunMojo.java:418)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: autovalue/shaded/org/apache/commons/logging/LogFactory
    at org.apache.velocity.runtime.log.CommonsLogLogChute.init(CommonsLogLogChute.java:75)
    at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:81)
    at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:269)
    at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:871)
    at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:262)
    at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:93)
    at org.springframework.ui.velocity.VelocityEngineFactory.createVelocityEngine(VelocityEngineFactory.java:249)
    at org.springframework.web.servlet.view.velocity.VelocityConfigurer.afterPropertiesSet(VelocityConfigurer.java:120)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
    ... 21 common frames omitted
Caused by: java.lang.ClassNotFoundException: autovalue.shaded.org.apache.commons.logging.LogFactory
    at java.net.URLClassLoader.run(URLClassLoader.java:372)
    at java.net.URLClassLoader.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 31 common frames omitted

查看 AutoValue 的 pom.xml。似乎 Apache commons 已经被遮蔽了，但是为什么没有被遮蔽的类加载？

我的应用程序 pom.xml 在 Github。

Answer 1

问题是 VelocityAutoConfiguration class... 出于某种原因，AutoValue 在其阴影 jar 中包含 Velocity 但不重新定位引用。当您包含 spring-context-support 时，一些与 Velocity 相关的 classes 被加载，它们被 VelocityAutoConfiguration 拾取，然后尝试从包含的 AutoValue classes 加载，崩溃壮观。

到目前为止我的解决方案是添加

@EnableAutoConfiguration(exclude = VelocityAutoConfiguration.class)

Answer 2

我通过将排除添加到 SpringBootApplicationclass 解决了这个问题，如下所示：

@SpringBootApplication(exclude = VelocityAutoConfiguration.class)

带有 Google AutoValue 和 spring-context-support 的 LogFactory ClassNotFoundException

LogFactory ClassNotFoundException with Google AutoValue and spring-context-support

maven-shade-plugin

spring-boot

auto-value