applicationcontext

I have a Spring application-context.xml with PropertyPlaceholderConfigurer to get properties' values from .properties file. Main and test source folders have separate .properties file. The issue is that I need to use environment variables in .properties file. But when I do it in the following way: property.name=${env.SYSTEM_PROPERTY} I'm getting the following error: org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'beanName' defined in class path resource [com/example/applicationContext.xml]: Could not resolve placeholder 'env.SYSTEM_PROPERTY'

I have the following ApplicationListener: package org.mycompany.listeners; import org.springframework.context.ApplicationListener; import org.springframework.context.event.ContextStartedEvent; public class MyApplicationListener implements ApplicationListener<ContextStartedEvent> { public MyApplicationListener() { super(); System.out.println("Application context listener is created!"); } /** * {@inheritDoc} */ public void onApplicationEvent(final ContextStartedEvent event) { System.out.println("Context '" + event.getApplicationContext().getDisplayName() + "' is started!"); } } And the following

I get confused between the two ApplicationContext and ServletContext when it comes to Spring MVC Application. I know that There is just only One ApplicationContext per Spring Web Application and there is also just only One ServletContext per web application. To initiate the value for both ApplicationContext and ServletContext, in web.xml, we will add something in context-param tag. That is the point that makes me confused. What are the differences between these two (i know ApplicationContext has some methods to work with beans)? and When we would use ApplicationContext and When we would use

I have a Spring boot Web application. The application is configured via java classes using the @Configurable annotation. I have introduced two profiles: 'install', 'normal'. If the install profile is active, none of the Beans that require DB connection is loaded. I want to create a controller where the user can set up the db connection parameters and When it's done I want to switch the active profile from 'install' to 'normal' and refresh the application context, so the Spring can init every bean that needs DB data source. I can modify the list of active profiles from code, without problems,

I have a spring boot application and I want to add liquibase configuration change log for it. I have created a LiquibaseConfig class for configuring liquibase: @Configuration public class LiquibaseConfiguration { @Value("${com.foo.bar.liquibase.changelog}") private String changelog; @Autowired MysqlDataSource dataSource; @Bean public SpringLiquibase liquibase() { SpringLiquibase liquibase = new SpringLiquibase(); liquibase.setDataSource(dataSource); liquibase.setChangeLog(changelog); return liquibase; } } and I have configured the datasource information in properties file: spring.datasource

As in the title above, I am confused about pros cons between injecting applicationContext by directly @Autowired annnotation or implementing ApplicationContextAware interface in a singleton spring bean. Which one do you prefer in which cases and why? Thanks. Actually, both are bad. Both of them tie your application to the Spring framework, thus inverting the whole inversion-of-control concept. In an ideal world, your application should not be aware of being managed by an ApplicationContext at all. Once you have chosen to violate this principle, it doesn't really matter how you do it.

Note: the test project I'm mentioning can be downloaded with: git clone https://github.com/mperdikeas/so-spring-di-appcontext-schemalocation.git .. and run with 'ant run'. I 'understand' that XML namespace names are just used as opaque identifiers and not meant to be used as URIs ( wikipedia ). I also 'understand' that the XML schema locations are meant to provide hints as to the actual location of schema documents and, being hints, not used in practice ( w3.org ). With that in mind I 've been experimenting with a simple Spring DI application (used in a simple J2SE setting) by modifying the

The usual VB way to handle a computationally heavy task is to put it in a background worker thread, while the main thread keeps handling the UI. Say for whatever reason I needed to do this the other way around: the main thread doing the grunt work and the background one updating the UI. Here's what I have so far. The only problem is, while the UI window (Form1) does get redrawn, you can't interact with it, not even move or resize it (the mouse cursor turns to hourglass and won't click). Public Class ProgressDisplay Private trd As Thread Public Sub New() trd = New Thread(AddressOf threadtask)