Bağlam karışıklığı - Tekli çekirdeği iki kez yayma baharı

Question

İlkbahar yapılandırmamı programlı olarak yapıyorum. Enjeksiyon sonuçlarını almıyorum, bu yüzden günlükleri inceledim ve nedense Spring tek kerestelerimi iki kere üretiyor.

Bunu başlangıç ​​günlükleri

INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@74b1128c: defining beans <LIST OF BEANS> 

...little further 

INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@61de76d0: defining beans <SAME LIST OF BEANS> 

bu normal bir davranış mı Tomcat olsun?

Bu Bu benim Servlet Bağlam

@Configuration 
@EnableWebMvc 
@ComponentScan(basePackages = {"com.application.controllers"}) 
public class AppServletContext extends WebMvcConfigurerAdapter { 
    /* Beans */ 
} 

Ve BidAppInitializer

@Override 
public void onStartup(ServletContext container) throws ServletException { 
    AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext(); 
    rootContext.register(AppRootContext.class); 

    container.addListener(new ContextLoaderListener(rootContext)); 

    AnnotationConfigWebApplicationContext servletContext = new AnnotationConfigWebApplicationContext(); 
    servletContext.register(AppServletContext.class); 

    ServletRegistration.Dynamic appServlet = container.addServlet("bidapp", new DispatcherServlet(servletContext)); 
    appServlet.setLoadOnStartup(1); 
    appServlet.addMapping("/"); 
} 

Bu benim tam Tomcat denir benim Servlet Initializer sınıf start-up my Uygulama Bağlam

@Configuration 
@EnableTransactionManagement 
@ComponentScan(basePackages = {"com.application.shiro", 
        "com.business.dao.impl", 
        "com.business.services"}) 
public class AppRootContext {  
    /* Beans */ 
} 

olduğunu log:

Feb 26, 2013 11:32:21 PM org.apache.catalina.core.AprLifecycleListener init 
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\MATLAB\R2010b\runtime\win64;C:\Program Files\MATLAB\R2010b\bin;C:\Users\Soto\Desktop\android-sdk-windows\tools;C:\Program Files (x86)\Common Files\Teleca Shared;C:\Program Files\TortoiseSVN\bin;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files\TortoiseHg\;C:\MinGW\bin;C:\Program Files\nodejs\; C:\PostgreSQL\9.2\bin\;C:\Program Files\MySQL\MySQL Server 5.5\bin;C:\MySQL\MySQL Server 5.5\bin;C:\Ruby193\bin;C:\Program Files (x86)\SSH Communications Security\SSH Secure Shell;C:\Users\Soto\Desktop\android-sdk-windows\tools;C:\MinGW\bin;C:\Users\Soto\AppData\Roaming\npm\;C:\apache-maven-3.0.4\bin;C:\Program Files\Java\jdk1.7.0_02\bin;C:\PostgreSQL\9.2\bin;. 
Feb 26, 2013 11:32:21 PM org.apache.tomcat.util.digester.SetPropertiesRule begin 
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:BidApp' did not find a matching property. 
Feb 26, 2013 11:32:21 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-bio-8080"] 
Feb 26, 2013 11:32:21 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["ajp-bio-8009"] 
Feb 26, 2013 11:32:21 PM org.apache.catalina.startup.Catalina load 
INFO: Initialization processed in 824 ms 
Feb 26, 2013 11:32:21 PM org.apache.catalina.core.StandardService startInternal 
INFO: Starting service Catalina 
Feb 26, 2013 11:32:21 PM org.apache.catalina.core.StandardEngine startInternal 
INFO: Starting Servlet Engine: Apache Tomcat/7.0.22 
Feb 26, 2013 11:32:29 PM org.apache.catalina.core.ApplicationContext log 
INFO: Spring WebApplicationInitializers detected on classpath: [com.bidapp.bootstrap.BidAppInitializer@60515c64] 
Feb 26, 2013 11:32:32 PM org.apache.catalina.core.ApplicationContext log 
INFO: Initializing Spring root WebApplicationContext 
Feb 26, 2013 11:32:32 PM org.springframework.web.context.ContextLoader initWebApplicationContext 
INFO: Root WebApplicationContext: initialization started 
Feb 26, 2013 11:32:32 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh 
INFO: Refreshing Root WebApplicationContext: startup date [Tue Feb 26 23:32:32 EST 2013]; root of context hierarchy 
Feb 26, 2013 11:32:33 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters 
INFO: JSR-330 'javax.inject.Named' annotation found and supported for component scanning 
Feb 26, 2013 11:32:33 PM org.springframework.web.context.support.AnnotationConfigWebApplicationContext loadBeanDefinitions 
INFO: Registering annotated classes: [class com.bidapp.bootstrap.AppRootContext] 
Feb 26, 2013 11:32:33 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters 
INFO: JSR-330 'javax.inject.Named' annotation found and supported for component scanning 
Feb 26, 2013 11:32:36 PM org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor <init> 
INFO: JSR-330 'javax.inject.Inject' annotation found and supported for autowiring 

SDASD <--- Logged by my Root Context class constructor 

Feb 26, 2013 11:33:49 PM org.springframework.context.support.AbstractApplicationContext$BeanPostProcessorChecker postProcessAfterInitialization 
INFO: Bean 'appRootContext' of type [class com.bidapp.bootstrap.AppRootContext$$EnhancerByCGLIB$$84ad5432] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 
Feb 26, 2013 11:33:52 PM org.springframework.context.support.AbstractApplicationContext$BeanPostProcessorChecker postProcessAfterInitialization 
INFO: Bean 'proxyAsyncConfiguration' of type [class org.springframework.scheduling.annotation.ProxyAsyncConfiguration$$EnhancerByCGLIB$$f08c92c2] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 
Feb 26, 2013 11:33:54 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons 
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@6393d737: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,appRootContext,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0,accountActivationDaoHibernateImpl,accountDao,auctionDaoHibernateImpl,categoryDao,accountService,emailService,org.springframework.aop.config.internalAutoProxyCreator,proxyTransactionManagementConfiguration,org.springframework.transaction.config.internalTransactionAdvisor,transactionAttributeSource,transactionInterceptor,proxyAsyncConfiguration,org.springframework.context.annotation.internalAsyncAnnotationProcessor,securityManager,credentialsMatcher,sessionFactory,transactionManager,hibernateRealm,lifecycleBeanPostProcessor,webTemplateResolver,emailTemplateResolver,templateEngine,shiroFilter,taskExecutor,dataSource,mailSender,viewResolver]; root of factory hierarchy 
Feb 26, 2013 11:33:56 PM com.mchange.v2.log.MLog <clinit> 
INFO: MLog clients using java 1.4+ standard logging. 
Feb 26, 2013 11:33:56 PM com.mchange.v2.c3p0.C3P0Registry banner 
INFO: Initializing c3p0-0.9.1 [built 16-January-2007 14:46:42; debug? true; trace: 10] 
Feb 26, 2013 11:34:45 PM com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager 
INFO: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 10, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge15x8t76zmwq1uj2ed9|6cfb984, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge15x8t76zmwq1uj2ed9|6cfb984, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localhost:3306/bidapp, lastAcquisitionFailureDefaultUser -> null, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 1800, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 20, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 5, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ] 
Feb 26, 2013 11:35:33 PM org.springframework.orm.hibernate4.HibernateTransactionManager afterPropertiesSet 
INFO: Using DataSource [com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 10, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge15x8t76zmwq1uj2ed9|6cfb984, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge15x8t76zmwq1uj2ed9|6cfb984, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localhost:3306/bidapp, lastAcquisitionFailureDefaultUser -> null, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 1800, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 20, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 5, numHelperThreads -> 3, numThreadsAwaitingCheckoutDefaultUser -> 0, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false ]] of Hibernate SessionFactory for HibernateTransactionManager 
Feb 26, 2013 11:35:36 PM org.springframework.web.context.ContextLoader initWebApplicationContext 
INFO: Root WebApplicationContext: initialization completed in 183726 ms 
Feb 26, 2013 11:35:36 PM org.apache.catalina.core.ApplicationContext log 
INFO: Initializing Spring FrameworkServlet 'bidapp' 
Feb 26, 2013 11:35:36 PM org.springframework.web.servlet.FrameworkServlet initServletBean 
INFO: FrameworkServlet 'bidapp': initialization started 
Feb 26, 2013 11:35:36 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh 
INFO: Refreshing WebApplicationContext for namespace 'bidapp-servlet': startup date [Tue Feb 26 23:35:36 EST 2013]; parent: Root WebApplicationContext 
Feb 26, 2013 11:35:36 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters 
INFO: JSR-330 'javax.inject.Named' annotation found and supported for component scanning 
Feb 26, 2013 11:35:36 PM org.springframework.web.context.support.AnnotationConfigWebApplicationContext loadBeanDefinitions 
INFO: Registering annotated classes: [class com.bidapp.bootstrap.AppServletContext] 
Feb 26, 2013 11:35:37 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters 
INFO: JSR-330 'javax.inject.Named' annotation found and supported for component scanning 
Feb 26, 2013 11:35:40 PM org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor <init> 
INFO: JSR-330 'javax.inject.Inject' annotation found and supported for autowiring 
Feb 26, 2013 11:35:42 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons 
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@2c8ff601: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,appServletContext,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0,accountController,auctionController,indexPagesController,delegatingWebMvcConfiguration,requestMappingHandlerMapping,viewControllerHandlerMapping,beanNameHandlerMapping,resourceHandlerMapping,defaultServletHandlerMapping,requestMappingHandlerAdapter,mvcConversionService,mvcValidator,httpRequestHandlerAdapter,simpleControllerHandlerAdapter,handlerExceptionResolver]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@6393d737 
Feb 26, 2013 11:35:52 PM org.springframework.web.servlet.handler.AbstractHandlerMethodMapping registerHandlerMethod 
...Controller handler method mappings 

Answer 1

Singleton, Spring konteyner içinde tek bir örneği garanti eder. Bu, kapsayıcıların olduğu kadar çok singleton örneğine sahip olabileceğiniz anlamına gelir (aynı JVM sınıfı yükleyiciyi kullanıyor olsa bile). Bkz. The singleton scope ve bu yanıt için Singleton Design Pattern vs. Singleton Bean

Bu durumda iki bağlamı örneklendiriyorsunuz - rootContext ve servletContext ve bunlar günlük ifadeleri geliyor.

Her bir tekil örneğinin olmasını istiyorsanız, bu iki bağlamı birleştirebilirsiniz.

---

böyle bir davranış göstermektedir

Küçük java sınıfı (garip kod biçimlendirme için özürlerini - bu daha özlü yapmak istedim):

package singleton; 

import java.util.UUID; 

import org.springframework.context.annotation.AnnotationConfigApplicationContext; 
import org.springframework.context.annotation.ComponentScan; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.stereotype.Component; 

public class AppMain { 

    public static void main(String[] args) { 
     final AnnotationConfigApplicationContext rootContext = new AnnotationConfigApplicationContext(); 
     rootContext.register(AppRootContext.class); 
     rootContext.refresh(); 

     final AnnotationConfigApplicationContext servletContext = new AnnotationConfigApplicationContext(); 
     servletContext.register(AppServletContext.class); 
     servletContext.refresh(); 

     final Singleton one = (Singleton) rootContext.getBean("singleton"); 
     final Singleton andAnotherOne = (Singleton) servletContext.getBean("singleton"); 

     System.out.println("Singletons are " + (one.ID.equals(andAnotherOne.ID) ? "equal" : "different")); 
    } 
} 

@Component 
class Singleton {public String ID = UUID.randomUUID().toString();} 

@Configuration 
@ComponentScan(basePackages = { "singleton" }) 
class AppRootContext {} 

@Configuration 
@ComponentScan(basePackages = { "singleton" }) 
class AppServletContext {} 

Answer 2

bağlamda iki tür vardır vardır bir rootcontext ve başka bir şeydir Web uygulaması içeriği.

WebAppInitalizer size uzanıyorsa

AbstractAnnotationConfigDispatcherServletInitializer sınıfı aşağıdaki yöntemleri geçersiz kılmak ve bu sınıf tanımı iki yöntemde tekrarlanan olmadığından emin olun emin

olun uzanır.

@Override korumalı Sınıf [] getServletConfigClasses() { new class [] {MvcConfig.class}; }

@Override 
protected Class<?>[] getRootConfigClasses() { 
    return new Class[] {RooTContextAppConfig.class }; 
}