ejemplo - spring boot hibernate cache

ApplicationEventMulticaster no inicializado: llame a ''refresh'' antes de eventos multicasting

Question

Estoy tratando de implementar ehcache para mi aplicación, pero cuando intento invocar el servidor, obtengo el siguiente error:

java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call ''refresh'' before multicasting events via the context: WebApplicationContext for namespace ''dispatcher-servlet'': startup date [Thu Apr 16 14:37:53 IST 2015]; root of context hierarchy
at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:344)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331)
at org.springframework.web.servlet.FrameworkServlet.publishRequestHandledEvent(FrameworkServlet.java:1061)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:996)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

Pasos que seguí:

PASO 1: creado el archivo ehcache.xml en /src/main/resources como se puede ver a continuación -

<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="ehcache.xsd"
updateCheck="true"
monitoring="autodetect"
dynamicConfig="true">
<diskStore path="java.io.tmpdir" />
<cache name="movieFindCache"
maxEntriesLocalHeap="10000"
maxEntriesLocalDisk="1000"
eternal="false"
diskSpoolBufferSizeMB="20"
timeToIdleSeconds="300" timeToLiveSeconds="600"
memoryStoreEvictionPolicy="LFU"
transactionalMode="off">
<persistence strategy="localTempSwap" />
</cache>
</ehcache>

PASO 2: añadido a appconfig.java

@Bean
public CacheManager getEhCacheManager(){
return new EhCacheCacheManager(getEhCacheFactory().getObject());
}
@Bean
public EhCacheManagerFactoryBean getEhCacheFactory(){
EhCacheManagerFactoryBean factoryBean = new EhCacheManagerFactoryBean();
factoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));
factoryBean.setShared(true);
return factoryBean;
}

PASO3: añadido a webappinitializer.java que se llama al inicio

AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(AppConfig.class);
ctx.register(HibernateConfiguration.class);
ctx.setServletContext(servletContext);
Dynamic dynamic = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));
dynamic.setLoadOnStartup(1); 

PASO 4 - pom.xml contiene -

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.8.Final</version>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>2.9.0</version>
</dependency>
<!-- Optional, to log stuff -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.0.13</version>
</dependency>
<!-- Spring caching framework inside this -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<!-- Support for Ehcache and others -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-osgi</artifactId>
<version>4.3.8.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-envers</artifactId>
<version>4.3.8.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>4.3.8.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-proxool</artifactId>
<version>4.3.8.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-infinispan</artifactId>
<version>4.3.8.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>4.3.8.Final</version>
</dependency>

No puedo entender la causa raíz del error anterior. Cualquier ayuda es apreciada.

Answer 1

Esto es un poco estúpido, pero mi problema fue que había colocado la clase @SpringBootApplication (es decir, aplicación, aplicación, aplicación web en la mayoría de los proyectos) dentro del paquete predeterminado. Por lo tanto, todo estaba en completo desorden.

No estoy seguro de por qué apareció este error exacto, pero moviendo la clase de la aplicación a un paquete que definitivamente lo solucionó.

Answer 2

La idea detrás de Spring-boot es que todas las configuraciones se realizan automáticamente en primavera.

En su caso, use el siguiente POM.

 <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.3.RELEASE</version>
</parent>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
</dependencies>

Agregue las siguientes application.properties en su src / main / resources.

spring.datasource.url=jdbc:mysql://localhost:3306/soschema
spring.datasource.username=root
spring.datasource.password=root123
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
# Specify the DBMS
spring.jpa.database = MYSQL
# Show or not log for each sql query
spring.jpa.show-sql = true
# Hibernate settings are prefixed with spring.jpa.hibernate.*
spring.jpa.hibernate.ddl-auto = update
spring.jpa.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.naming_strategy = org.hibernate.cfg.ImprovedNamingStrategy

Agregue el archivo Appconfig,

package org.arunm.ehcacheconfig;
import org.springframework.cache.CacheManager;
import org.springframework.cache.ehcache.EhCacheCacheManager;
import org.springframework.cache.ehcache.EhCacheManagerFactoryBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
@Configuration
public class AppConfig {
@Bean
public CacheManager getEhCacheManager(){
return new EhCacheCacheManager(getEhCacheFactory().getObject());
}
@Bean
public EhCacheManagerFactoryBean getEhCacheFactory(){
EhCacheManagerFactoryBean factoryBean = new EhCacheManagerFactoryBean();
factoryBean.setConfigLocation(new ClassPathResource("ehcache.xml"));
factoryBean.setShared(true);
return factoryBean;
}
}

Agregue una clase de nivel superior con el siguiente código,

package org.ehcachetest;
import java.util.Arrays;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.ComponentScan;
/**
* Hello world!
*
*/
@EnableAutoConfiguration
@ComponentScan
public class App
{
public static void main( String[] args )
{
ApplicationContext ctx = SpringApplication.run(App.class, args);
String[] beanNames = ctx.getBeanDefinitionNames();
Arrays.sort(beanNames);
for (String beanName : beanNames) {
System.out.println(beanName);
}
}
}

Si ejecuta App el método principal, encontrará que Spring ha creado automáticamente sessionFactory, TransactionManager, etc. para usted. No hay necesidad de ninguna configuración manual, lo que significa que no hay necesidad de agregar el dispatcherservlet, la configuración de hibernación, etc. Todo está gestionado por Spring.