Getting Spring Application Context

spring get application context in main method
spring boot configuration get application context
spring get environment from application context
get application context in non spring class
spring get current web application context
get application context from request
spring application context load-on startup
how application context works internally in spring

Is there a way to statically/globally request a copy of the ApplicationContext in a Spring application?

Assuming the main class starts up and initializes the application context, does it need to pass that down through the call stack to any classes that need it, or is there a way for a class to ask for the previously created context? (Which I assume has to be a singleton?)


If the object that needs access to the container is a bean in the container, just implement the BeanFactoryAware or ApplicationContextAware interfaces.

If an object outside the container needs access to the container, I've used a standard GoF singleton pattern for the spring container. That way, you only have one singleton in your application, the rest are all singleton beans in the container.

Static way to get 'Context' in Android?, To get a reference to the ApplicationContext in a Spring application, it can easily be achieved by implementing the ApplicationContextAware interface. Spring will automatically detect this interface and inject a reference to the ApplicationContext: view rawMyBeanImpl. java hosted by GitHub. ApplicationContext represents the Spring IoC container and is responsible for instantiating, configuring, and assembling the beans. The container gets its instructions on what objects to instantiate, configure, and assemble by reading configuration metadata. The configuration metadata is represented in XML, Java annotations, or Java code.


You can implement ApplicationContextAware or just use @Autowired:

public class SpringBean {
  @Autowired
  private ApplicationContext appContext;
}

SpringBean will have ApplicationContext injected, within which this bean is instantiated. For example if you have web application with a pretty standard contexts hierarchy:

main application context <- (child) MVC context

and SpringBean is declared within main context, it will have main context injected; otherwise, if it's declared within MVC context, it will have MVC context injected.

Spring ApplicationContext, Getting ApplicationContext. To access the application context, we can autowire the ApplicationContext interface or implement the  Spring ApplicationContext Container. The Application Context is Spring's advanced container. Similar to BeanFactory, it can load bean definitions, wire beans together, and dispense beans upon request. Additionally, it adds more enterprise-specific functionality such as the ability to resolve textual messages from a properties file and the ability to publish application events to interested event listeners.


Here's a nice way (not mine, the original reference is here: http://sujitpal.blogspot.com/2007/03/accessing-spring-beans-from-legacy-code.html

I've used this approach and it works fine. Basically it's a simple bean that holds a (static) reference to the application context. By referencing it in the spring config it's initialized.

Take a look at the original ref, it's very clear.

This page gives an example to get spring application context object with in non spring managed classes as well. It is not possible to have all classes as spring  Questions: Is there a way to statically/globally request a copy of the ApplicationContext in a Spring application? Assuming the main class starts up and initializes the application context, does it need to pass that down through the call stack to any classes that need it, or is there a way for a class to ask


I believe you could use SingletonBeanFactoryLocator. The beanRefFactory.xml file would hold the actual applicationContext, It would go something like this:

<bean id="mainContext" class="org.springframework.context.support.ClassPathXmlApplicationContext">
     <constructor-arg>
        <list>
            <value>../applicationContext.xml</value>
        </list>
     </constructor-arg>
 </bean>

And the code to get a bean from the applicationcontext from whereever would be something like this:

BeanFactoryLocator bfl = SingletonBeanFactoryLocator.getInstance();
BeanFactoryReference bf = bfl.useBeanFactory("mainContext");
SomeService someService = (SomeService) bf.getFactory().getBean("someService");

The Spring team discourage the use of this class and yadayada, but it has suited me well where I have used it.

This article shows you three different ways how to get to the Spring Framework Application Context in your code. Summary (This is a repost of  In the case of spring web application we have a utility class provided by spring framework called WebApplicationContextUtils. We can use this utility to get application context but we need to provide the respective servletcontext as parameter.


Here is how to get the ApplicationContext in a spring bean. It can be used to look up other spring beans or search out beans based on their  It is not possible to have all classes as spring managed classes, in such classes you need to get spring application context object. This can be achieved by using ApplicationContextAware interface. Here are the steps to achieve application context object: Create a new class and implement ApplicationContextAware method and its unimplemented method as shown below:


How to access ApplicationContext inside a java bean? To get access to ApplicationContext we should implement ApplicationContextAware interface in the  So your actually writing code in your business objects that Spring can do for you. This type of code is of no real value to your business objects. Spring provides you with the ability to keep this kind of plumbing code out of your business objects letting the developers focus on the business logic.


Spring ApplicationContext Container - The Application Context is Spring's step is used to get the required bean using getBean() method of the created context. In the Application, we create a bean, call its method and set up the Spring Boot application. The CommandLineRunner interface indicates that a bean should run when it is contained within a SpringApplication .


Semiconductor. This article shows you three different ways how to get to the Spring Framework Application Context in your code. Inheritance from a parent context. Definitions in a descendant context will always take priority. This means, for example, that a single parent context can be used by an entire web application, while each servlet has its own child context that is independent of that of any other servlet. ApplicationContext vs BeanFactory: