有没有办法让嵌入式EJB容器更快启动？

Question

我正在使用glassfish和netbeans创建我的第一个Java EE Web应用程序。当我创建一个需要嵌入式EJB容器的单元测试时，它可能需要大约30秒才能加载。我认为这完全可以理解，因为它“模仿”glassfish服务器。 但后来我从Adam Bien那里看到了这篇文章：

  

整个测试，启动容器，接管我的机器   5秒。

http://www.adam-bien.com/roller/abien/entry/embedding_ejb_3_1_container

所以我必须假设某些东西配置不正确。我正在运行Linux Mint 12，我的项目是使用MySQL数据库而我的PC是2Ghz双核，4 GB内存。大多数都使用netbeans安装中的默认设置。 （根据cpubenchmark.net，我确实订购了一个新的处理器，将CPU基准从1700转移到7800）

如何提高启动嵌入式EJB容器的速度？

在查看输出时，主要罪魁祸首似乎是：

org.hibernate.validator.engine.resolver.DefaultTraversableResolver detectJPA

以下是完整输出：

Jan 9, 2012 5:01:57 PM com.sun.enterprise.v3.server.CommonClassLoaderServiceImpl findDerbyClient INFO: Cannot find javadb client jar file, derby jdbc driver will not be available by default.
Jan 9, 2012 5:01:59 PM org.glassfish.ha.store.spi.BackingStoreFactoryRegistry register INFO: Registered org.glassfish.ha.store.adapter.cache.ShoalBackingStoreProxy for persistence-type = replicated in BackingStoreFactoryRegistry
Jan 9, 2012 5:02:00 PM com.sun.enterprise.v3.server.AppServerStartup run INFO: GlassFish Server Open Source Edition 3.1.1 (12) startup time : Embedded (1,476ms), startup services(2,053ms), total(3,529ms)
Jan 9, 2012 5:02:00 PM org.glassfish.admin.mbeanserver.JMXStartupService$JMXConnectorsStarterThread run INFO: JMXStartupService: JMXConnector system is disabled, skipping.
Jan 9, 2012 5:02:02 PM org.glassfish.admin.mbeanserver.JMXStartupService shutdown INFO: JMXStartupService and JMXConnectors have been shut down.
Jan 9, 2012 5:02:02 PM com.sun.enterprise.v3.server.AppServerStartup stop INFO: Shutdown procedure finished
Jan 9, 2012 5:02:02 PM AppServerStartup run INFO: [Thread[GlassFish Kernel Main Thread,5,main]] exiting
Jan 9, 2012 5:02:02 PM org.glassfish.ha.store.spi.BackingStoreFactoryRegistry register INFO: Registered org.glassfish.ha.store.adapter.cache.ShoalBackingStoreProxy for persistence-type = replicated in BackingStoreFactoryRegistry
Jan 9, 2012 5:02:02 PM com.sun.enterprise.v3.server.AppServerStartup run INFO: GlassFish Server Open Source Edition 3.1.1 (12) startup time : Embedded (5,874ms), startup services(150ms), total(6,024ms)
Jan 9, 2012 5:02:02 PM org.glassfish.admin.mbeanserver.JMXStartupService$JMXConnectorsStarterThread run INFO: JMXStartupService: JMXConnector system is disabled, skipping.
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.EJBContainerProviderImpl skipJar INFO: ... skipping entry with a Manifest file with a special attribute: glassfish-embedded-static-shell.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding EJB module to ScatteredArchive classes
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive mysql-connector-java-5.1.13-bin.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive commons-codec-1.6.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive commons-codec-1.6-bin.zip
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive ant.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive primefaces-3.0.RC2.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive ant-junit.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive log4j-1.2.15.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive classes
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.DeploymentElement getOrCreateApplication INFO: [DeploymentElement] adding library to ScatteredArchive junit-4.8.2.jar
Jan 9, 2012 5:02:03 PM org.glassfish.ejb.embedded.EJBContainerImpl deploy INFO: [EJBContainerImpl] Deploying app: org.glassfish.embeddable.archive.ScatteredArchive@1ebafda6
Jan 9, 2012 5:02:08 PM org.hibernate.validator.util.Version <clinit> INFO: Hibernate Validator 4.1.0.Final
Jan 9, 2012 5:02:09 PM org.hibernate.validator.engine.resolver.DefaultTraversableResolver detectJPA INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
Jan 9, 2012 5:02:15 PM com.sun.enterprise.security.SecurityLifecycle <init> INFO: SEC1002: Security Manager is OFF.
Jan 9, 2012 5:02:15 PM com.sun.enterprise.security.SecurityLifecycle onInitialization INFO: SEC1010: Entering Security Startup Service
Jan 9, 2012 5:02:15 PM com.sun.enterprise.security.PolicyLoader loadPolicy INFO: SEC1143: Loading policy provider com.sun.enterprise.security.provider.PolicyWrapper.
Jan 9, 2012 5:02:15 PM com.sun.enterprise.security.auth.realm.Realm doInstantiate INFO: SEC1115: Realm [admin-realm] of classtype [com.sun.enterprise.security.auth.realm.file.FileRealm] successfully created.
Jan 9, 2012 5:02:15 PM com.sun.enterprise.security.auth.realm.Realm doInstantiate INFO: SEC1115: Realm [file] of classtype [com.sun.enterprise.security.auth.realm.file.FileRealm] successfully created.
Jan 9, 2012 5:02:15 PM com.sun.enterprise.security.auth.realm.Realm doInstantiate INFO: SEC1115: Realm [certificate] of classtype [com.sun.enterprise.security.auth.realm.certificate.CertificateRealm] successfully created.
Jan 9, 2012 5:02:15 PM com.sun.enterprise.security.SecurityLifecycle onInitialization INFO: SEC1011: Security Service(s) Started Successfully
Jan 9, 2012 5:02:17 PM org.hibernate.validator.engine.resolver.DefaultTraversableResolver detectJPA INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
Jan 9, 2012 5:02:26 PM org.hibernate.validator.engine.resolver.DefaultTraversableResolver detectJPA INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
Jan 9, 2012 5:02:26 PM org.eclipse.persistence.session.file:/tmp/gfembed2576733372934037196tmp/applications/classes/_REMPU INFO: EclipseLink, version: Eclipse Persistence Services - 2.3.0.v20110604-r9504
Jan 9, 2012 5:02:29 PM org.eclipse.persistence.session.file:/tmp/gfembed2576733372934037196tmp/applications/classes/_REMPU INFO: file:/tmp/gfembed2576733372934037196tmp/applications/classes/_REMPU login successful
...

由于

Answer 1

您可以尝试另一个EJBContainer impl。

OpenEJB Embedded EJBContainer的测试时间在1秒范围内。它支持GlassFish描述符 - 当我们运行Java EE TCK时，我们使用它们而不是我们自己的描述符，因为我们懒得编写我们需要的几千个描述符，TCK已经带有完整的GlassFish描述符。

或者，也许完全尝试不同的方法。

对于更多单元测试样式，可以查看：https://stackoverflow.com/a/8716630/190816 即在测试用例中构建应用程序并根据需要进行一些模拟。

Answer 2

这是我到目前为止所做的，我的测试周期降至13秒。

1）升级我的处理器。我从一个双核2Ghz转移到两个四核2.5Ghz，它在5s左右剃掉了。

2）手动配置构建文件，老实说，我并不完全理解它为什么会产生这样的差异，但它已经削减了差不多10秒。 http://netbeans.org/kb/docs/javaee/javaee-entapp-junit.html#Exercise_1d

Map<String, Object> properties = new HashMap<String, Object>();
// Use the MODULES property to specify the set of modules to be initialized,
// in this case a java.io.File 
properties.put(EJBContainer.MODULES, new File("build/jar"));

3）修改了persistence.xml以不创建数据库表。在对实体结构进行更改时，我只需要重新打开它。

但如果我不打算花时间做一个正确的统计分析，这些数字有点不稳定并且原谅我。当我在持久性中启用“创建”表并返回到基本自动配置时，它将在16秒内运行。但是在处理器到来之前我已经把它降到了18岁。所以数字并没有增加。

我也非常高兴得到Adam Bien的建议。我问他是否愿意写一篇关于这个主题的文章。他说这篇文章已在this文章中详细介绍，更多细节可以在他的书和另一篇文章中找到：

• http://www.oracle.com/technetwork/articles/java/unittesting-455385.html
• http://www.amazon.com/World-Night-Hacks-Dissecting-Business-ebook/dp/B004Z20A3G
• http://www.oracle.com/technetwork/articles/java/integrationtesting-487452.html