我有一个 Spring Boot 项目，它用作其他项目的库（打包的 jar 文件）。我正在尝试配置咖啡因缓存，该缓存将在向服务发出请求后异步刷新。
pom.xml（包括）：
<dependency>
<groupId>com.github.ben-manes.caffeine</groupId>
<artifactId>caffeine</artifactId>
</dependency>
我的配置类：
@EnableCaching
@Configuration
public class CaffeineCacheConfig {
@Bean
public CacheManager cacheManager(){
CaffeineCacheManager cacheManager = new CaffeineCacheManager("userStories", "features");
cacheManager.setCaffeine(caffeineCacheBuilder());
cacheManager.setAllowNullValues(false);
return cacheManager;
}
Caffeine<Object, Object> caffeineCacheBuilder() {
return Caffeine.newBuilder()
.initialCapacity(100)
.maximumSize(500)
.refreshAfterWrite(1, TimeUnit.MINUTES)
.weakKeys()
.recordStats();
}
}
DAO 层（这里需要缓存）：
@Component
@EnableCaching
@CacheConfig(cacheNames = {"userStories"})
public class UserStoryDaoImpl implements IUserStoryDao {
@Override
@Cacheable
public List<UserStory> getUserStoriesForProjectAndRelease(UserDto userDto, Set<Integer> reportProjectId, int releaseId) {
return new ArrayList(); //slow and low performing method that returns a list
}
DAO 层（这里也需要缓存）：
@Component
@EnableCaching
@CacheConfig(cacheNames = {"features"})
public class FeatureDaoImpl implements IFeatureDao {
@Override
@Cacheable
public List<Features> geFeaturesForProjectAndRelease(UserDto userDto, Set<Integer> reportProjectId, int releaseId) {
return new ArrayList(); //slow and low performing method that returns a list
}
}
运行此设置时，我遇到了错误堆栈：
2020-03-31 16:55:46,020 ERROR web.context.ContextLoader - Context initialization failed [localhost-startStop-1] {}
java.lang.NullPointerException
at org.springframework.context.annotation.AutoProxyRegistrar.registerBeanDefinitions(AutoProxyRegistrar.java:62)
at org.springframework.context.annotation.ConfigurationClassParser.processImport(ConfigurationClassParser.java:385)
at org.springframework.context.annotation.ConfigurationClassParser.processImport(ConfigurationClassParser.java:377)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:205)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:164)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:130)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:287)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:225)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:632)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:461)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:410)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at com.intland.codebeamer.context.CodeBeamerContextListener.lambda$contextInitialized$1(CodeBeamerContextListener.java:117)
at com.intland.codebeamer.context.CodeBeamerContextListener.logExecutionTime(CodeBeamerContextListener.java:148)
at com.intland.codebeamer.context.CodeBeamerContextListener.contextInitialized(CodeBeamerContextListener.java:117)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4699)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5165)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
2020-03-31 16:55:46,070 INFO codebeamer.context.CodeBeamerContextListener - Context - Destroyed [localhost-startStop-1] {}
2020-03-31 16:55:46,132 WARN context.support.XmlWebApplicationContext - Exception thrown from ApplicationListener handling ContextClosedEvent [localhost-startStop-1] {}
java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: Root WebApplicationContext: startup date [Tue Mar 31 16:55:35 IST 2020]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:347)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:334)
at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1051)
at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1012)
at org.springframework.web.context.ContextLoader.closeWebApplicationContext(ContextLoader.java:586)
at org.springframework.web.context.ContextLoaderListener.contextDestroyed(ContextLoaderListener.java:143)
at com.intland.codebeamer.context.CodeBeamerContextListener.contextDestroyed(CodeBeamerContextListener.java:128)
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4746)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5403)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:226)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
2020-03-31 16:55:46,132 WARN context.support.XmlWebApplicationContext - Exception thrown from LifecycleProcessor on context close [localhost-startStop-1] {}
java.lang.IllegalStateException: LifecycleProcessor not initialized - call 'refresh' before invoking lifecycle methods via the context: Root WebApplicationContext: startup date [Tue Mar 31 16:55:35 IST 2020]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getLifecycleProcessor(AbstractApplicationContext.java:360)
at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1059)
at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1012)
at org.springframework.web.context.ContextLoader.closeWebApplicationContext(ContextLoader.java:586)
at org.springframework.web.context.ContextLoaderListener.contextDestroyed(ContextLoaderListener.java:143)
at com.intland.codebeamer.context.CodeBeamerContextListener.contextDestroyed(CodeBeamerContextListener.java:128)
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4746)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5403)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:226)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1859)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
不确定设置中缺少什么？