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Error: "Another unnamed CacheManager already exists in the same virtual machine." Using Spring, Jersey and ehCache

It seems that another process is loading the cache, but cannot find it (what if the error does not tell me a lie). The only thing he tells me is that I got another cache somewhere from a class called InputStreamConfigurationSource

Has anyone encountered this error ???

I use

  • Spring 3
  • Jersey 1.6 / 1.7
  • ehCache 2.6

Stacktrace

SEVERE: Servlet.service() for servlet [SpringDispatcher] in context with path [/FileService] threw exception [com.sun.jersey.api.container.ContainerException: Unable to create resource class com.myapp.FileStoreAccessAction] with root cause net.sf.ehcache.CacheException: Another unnamed CacheManager already exists in the same VM. Please provide unique names for each CacheManager in the config or do one of following: 1. Use one of the CacheManager.create() static factory methods to reuse same CacheManager with same name or create one if necessary 2. Shutdown the earlier cacheManager before creating new one with same name. The source of the existing CacheManager is: InputStreamConfigurationSource [ stream=java.io.BufferedInputStream@e782a8 ] at net.sf.ehcache.CacheManager.assertNoCacheManagerExistsWithSameName(CacheManager.java:521) at net.sf.ehcache.CacheManager.init(CacheManager.java:371) at net.sf.ehcache.CacheManager.<init>(CacheManager.java:356) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.sun.jersey.server.spi.component.ResourceComponentConstructor._construct(ResourceComponentConstructor.java:191) at com.sun.jersey.server.spi.component.ResourceComponentConstructor.construct(ResourceComponentConstructor.java:179) at com.sun.jersey.server.impl.resource.PerRequestFactory$PerRequest._getInstance(PerRequestFactory.java:182) at com.sun.jersey.server.impl.resource.PerRequestFactory$AbstractPerRequest.getInstance(PerRequestFactory.java:144) at com.sun.jersey.server.impl.application.WebApplicationImpl$19$1.getValue(WebApplicationImpl.java:1032) at com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable$1.getValue(AbstractHttpContextInjectable.java:104) at com.sun.jersey.server.spi.component.ResourceComponentConstructor._construct(ResourceComponentConstructor.java:196) at com.sun.jersey.server.spi.component.ResourceComponentConstructor.construct(ResourceComponentConstructor.java:179) at com.sun.jersey.server.impl.resource.PerRequestFactory$PerRequest._getInstance(PerRequestFactory.java:182) at com.sun.jersey.server.impl.resource.PerRequestFactory$AbstractPerRequest.getInstance(PerRequestFactory.java:144) at com.sun.jersey.server.impl.application.WebApplicationImpl$19$1.getValue(WebApplicationImpl.java:1032) at com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable$1.getValue(AbstractHttpContextInjectable.java:104) at com.sun.jersey.server.spi.component.ResourceComponentInjector.inject(ResourceComponentInjector.java:222) at com.sun.jersey.server.spi.component.ResourceComponentConstructor.construct(ResourceComponentConstructor.java:180) at com.sun.jersey.server.impl.resource.PerRequestFactory$PerRequest._getInstance(PerRequestFactory.java:182) at com.sun.jersey.server.impl.resource.PerRequestFactory$AbstractPerRequest.getInstance(PerRequestFactory.java:144) at com.sun.jersey.server.impl.application.WebApplicationContext.getResource(WebApplicationContext.java:238) at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1480) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1411) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1360) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1350) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662)

Spring Configuration

 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- Enable annotation configuration --> <context:annotation-config/> <context:component-scan base-package="com.myapp" /> <!-- Jackson JSON ObjectMapper --> <bean id="objectMapper" class="org.codehaus.jackson.map.ObjectMapper" /> <!-- Cache Manager --> <bean id="ehCacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean" scope="singleton"> <property name="configLocation" value="classpath:cacheConfig.xml" /> <property name="shared" value="true"/> </bean> <!-- Data Access --> <bean id="dataAccessFactory" class="com.myapp.DataAccessFactory" /> <!-- Application Stuff --> <bean id="fileStoreService" class="com.myapp.FileStoreService" scope="singleton"> <constructor-arg ref="dataAccessFactory"/> <constructor-arg ref="ehCacheManager" /> </bean> </beans>

Web xml

 <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>/WEB-INF/classes/log4j.properties</param-value> </context-param> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:appContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <servlet> <servlet-name>SpringDispatcher</servlet-name> <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>SpringDispatcher</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> </web-app>

Cache file

 <ehcache> <cache name="FileStoreList" maxElementsInMemory="10000" eternal="false" overflowToDisk="false" timeToIdleSeconds="0" timeToLiveSeconds="0" diskPersistent="false" diskExpiryThreadIntervalSeconds="120" /> </ehcache>

File service class

 public class FileStoreService { private final CacheManager cacheFactory; private final DataAccessFactory factory; public FileStoreService(@InjectParam DataAccessFactory factory, @InjectParam CacheManager ehCacheManager) { this.factory = factory; cacheFactory = ehCacheManager; } ...

JSON endpoint

 public class FileStoreAccessAction { /** * JSON Object Mapper - pasted in via Spring */ @InjectParam private ObjectMapper mapper; @InjectParam() private FileStoreService service; @GET @Produces(MediaType.APPLICATION_JSON) public Response list() { ....
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1 answer

As with this question, Jersey @InjectParam creates a new object instead of accepting from Spring "The wrong servlet was used. Thus, there were two container launches: one for Spring via" ContextLoaderListener "and one for Jersey through" ServletContainer ". This meant launching two cache instances.

the used Servlet container must be

  <servlet-class>com.sun.jersey.spi.spring.container.servlet.SpringServlet</servlet-class>

so the jersey can attach to the spring container

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Source: https://habr.com/ru/post/1438955/

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