配置spring caffeine缓存管理器时遇到问题

Question

我有一个spring boot项目，它作为某个其他项目的库(打包的jar文件)。我正在尝试配置咖啡因缓存，它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
}
}

在运行此安装程序时，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？

Answer 1

从从@Component类中删除@EnableCaching开始--只在@Configuration上保留它。

对@CacheConfig不太确定，一般可以在@Cacheable中配置缓存名称。

我以前对你的想法有过经验。这里的问题是，刷新缓存需要一种方法来执行刷新-该方法将根据键生成最新的值。当key基于来自方法签名的多个参数时，实现这样的方法是很棘手的。这也意味着值加载机制应该实现两次:在带注释的方法中和在重载程序中。