Kommentare zu: Spring Properties Reloaded

Von: sridharan

sridharan — Thu, 06 Nov 2008 11:07:57 +0000

We have property file entries for maxlength and min length.

In many cases these keys are not used in the application.

Is there any way of finding out these keys,.

Von: axel

axel — Mon, 14 Jan 2008 23:37:40 +0000

True, the functionality is currently limited: It works well as long as you just have string properties of named singleton beans containing a placeholder. For more complex properties, more complex update code or an even more core-level solution would be required. Handling map and list should be feasible, I think, but the impact of value conversion isn’t quite clear to me.

This stuff requires a bit more code reading and thinking.

I recently noticed that properties of inner beans (a bean element contained in a property element) are not reloadable either, because Spring (at least Spring 2) ignores the name of an inner singleton bean. That’s always fixable (just move the bean outside and use a ref), but unfortunate.

Von: David

David — Thu, 20 Dec 2007 23:41:54 +0000

I made a mistake in my last post of including tags and the site has stripped them. Sorry it was meant to read

Hi, has anyone had difficulties when reloading map or list properties?

It seems that the latest version of spring reloaded cant handle this. The two scenarios are quite different.

1. map. it looks like the reloader is trying to assign one of the individual property values to the actual map property.

2. list. no exceptions are thrown here but the list property is re populated with only the property value that was changed. For example if you started with a list of 12 items, after the reload you only have one item

Von: David

David — Thu, 20 Dec 2007 23:38:45 +0000

Hi, has anyone had difficulties when reloading or properties?

It seems that the latest version of spring reloaded cant handle this. The two scenarios are quite different.

1. it looks like the reloader is trying to assign one of the individual property values to the actual map property.

2. no exceptions are thrown here but the list property is re populated with only the property value that was changed. For example if you started with a list of 12 items, after the reload you only have one item

Would be greatful if anyone could help me out here

Von: Ajay

Ajay — Thu, 25 Oct 2007 15:49:40 +0000

I am getting this error…

391 2007-10-25 21:15:36,078 [ExecuteThread: '4' for queue: 'weblogic.kernel.System'] ERROR org.springframework.web.context.ContextLoader - Context initialization failed
java.lang.IllegalArgumentException: Scope must not be null
at org.springframework.util.Assert.notNull(Assert.java:112)
at org.springframework.beans.factory.support.AbstractBeanDefinition.setScope(AbstractBeanDefinition.java:341)
at org.springframework.beans.factory.config.BeanDefinitionVisitor.visitScope(BeanDefinitionVisitor.java:80)
at org.springframework.beans.factory.config.BeanDefinitionVisitor.visitBeanDefinition(BeanDefinitionVisitor.java:58)
at net.wuenschenswert.spring.ReloadingPropertyPlaceholderConfigurer.processProperties(ReloadingPropertyPlaceholderConfigurer.java:336)
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:75)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:467)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:334)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:244)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:187)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)
at weblogic.servlet.internal.WebAppServletContext$FireContextListenerAction.run(WebAppServletContext.java:7110)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.notifyCreated(WebAppServletContext.java:1757)
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:3378)
at weblogic.servlet.internal.WebAppServletContext.setStarted(WebAppServletContext.java:6262)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:892)
at weblogic.j2ee.J2EEApplicationContainer.start(J2EEApplicationContainer.java:2181)
at weblogic.j2ee.J2EEApplicationContainer.activate(J2EEApplicationContainer.java:2222)
at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.activateContainer(SlaveDeployer.java:2521)
at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.doCommit(SlaveDeployer.java:2439)
at weblogic.management.deploy.slave.SlaveDeployer$Task.commit(SlaveDeployer.java:2156)
at weblogic.management.deploy.slave.SlaveDeployer$Task.checkAutoCommit(SlaveDeployer.java:2255)
at weblogic.management.deploy.slave.SlaveDeployer$Task.prepare(SlaveDeployer.java:2150)
at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2402)
at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:884)
at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:592)
at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:501)
at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)

Von: axel

axel — Mon, 20 Aug 2007 07:19:12 +0000

Sorry for not answering sooner, my wordpress notification emails seem to have been stuck.

That exception probably means you’re using Spring 2 with the Spring-1.2 version of my code. See my other post for the Spring 2 compatible version of my code.

Von: Gareth

Gareth — Fri, 13 Jul 2007 18:40:19 +0000

Why Im getting this error?

StandardContext[/halo]Initializing Spring root WebApplicationContext
[:halo] 2007-07-13 14:37:57,721 INFO ReloadablePropertiesFactoryBean.loadProperties - Loading properties file from class path resource [halo/resources/monitoring/jamon.properties]
[:halo] 2007-07-13 14:37:59,784 ERROR ContextLoader.initWebApplicationContext - Context initialization failed
java.lang.NoSuchMethodError: net.wuenschenswert.spring.DefaultPropertyPlaceholderConfigurer.parseStringValue(Ljava/lang/String;Ljava/util/Properties;Ljava/lang/String;)Ljava/lang/String;
at net.wuenschenswert.spring.ReloadingPropertyPlaceholderConfigurer.parseStringValue(ReloadingPropertyPlaceholderConfigurer.java:121)
at net.wuenschenswert.spring.ReloadingPropertyPlaceholderConfigurer$PlaceholderResolvingBeanDefinitionVisitor.resolveStringValue(ReloadingPropertyPlaceholderConfigurer.java:378)
at org.springframework.beans.factory.config.BeanDefinitionVisitor.visitBeanClassName(BeanDefinitionVisitor.java:68)
at org.springframework.beans.factory.config.BeanDefinitionVisitor.visitBeanDefinition(BeanDefinitionVisitor.java:57)
at net.wuenschenswert.spring.ReloadingPropertyPlaceholderConfigurer.processProperties(ReloadingPropertyPlaceholderConfigurer.java:326)
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:75)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:437)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:342)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:241)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)
at halo.webapp.listener.StartupListener.contextInitialized(StartupListener.java:55)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4343)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)

Von: surajz

surajz — Thu, 05 Jul 2007 16:01:23 +0000

Did not know we could use runtime express (eg. ${my.cache.size})
in spring config file.

Recently I had to support dynamic runtime properties. I would have saved lot of time if I had found this article.

Thanks

Von: axel

axel — Tue, 22 May 2007 07:03:57 +0000

As I’ve already told torsten - for other readers that stumble upon this page:

Yes, it is definitely possible to use that code, that’s what I put it online for. I’m eventually aiming to get some of it into the Spring distribution, so for the time being, just pretend my code has the least restrictive license that will allow that.

I have just patched the code to be Spring 2.0.5 compatible (the signature of an overridden PropertyPlaceholderConfigurer method has changed). Release forthcoming.

UPDATE: released.

Von: torsten

torsten — Fri, 27 Apr 2007 08:19:28 +0000

We want to use the code in our app. Is it possible ?
Many thanks.