In previous we used Bean Factory container and discussed with example. Now we will discuss about the ApplicationContext and Using with in Example. ApplicationContext like Bean Factory‘s Big Brother with some additional functionality such as AOP concept, event notification and 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. This container is defined by the org.springframework.context.ApplicationContext interface.
This container loads the definitions of the beans from an XML file. Here you need to provide the full path of the XML bean configuration file to the constructor.
FileSystemXmlApplicationContext context = new FileSystemXmlApplicationContext("F:/my workspace/springAppDemo/src/spring.xml");
Using wildcard for file system:
FileSystemXmlApplicationContext context = new FileSystemXmlApplicationContext("F:/*my workspace*/**/src/*-spring.xml");
This container loads the definitions of the beans from an XML file. Here you do not need to provide the full path of the XML file but you need to set CLASSPATH properly because this container will look bean configuration XML file in CLASSPATH.
ApplicationContext context = new ClassPathXmlApplicationContext("classpath:com/dineshonjava/sdnext/springConfig/spring.xml");
Using wildcard for claspath:
ApplicationContext context = new ClassPathXmlApplicationContext("classpath*:com/dineshonjava/**/springConfig/spring.xml");
ApplicationContext context = new ClassPathXmlApplicationContext("classpath*:com/*/**/springConfig/*-spring.xml");
This container loads the XML file with definitions of all beans from within a web application.
ApplicationContext appContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
Let us see Example.
Triangle.java
package com.sdnext.dineshonjava.applicationcontext.tutorial;
public class Triangle
{
private String type;
/**
* @param type the type to set
*/
public void setType(String type)
{
this.type = type;
}
public void draw()
{
System.out.println(type+" Triangle Drawn");
}
}
spring.xml
<beans xmlns:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p" xmlns:> DrawingApp.javapackage com.sdnext.dineshonjava.applicationcontext.tutorial; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; /** * @author Dinesh Rajput * */ public class DrawingApp { /** * @param args */ public static void main(String[] args) { //Triangle triangle = new Triangle(); //BeanFactory factory =new XmlBeanFactory(new FileSystemResource("spring.xml")); ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml"); Triangle triangle = (Triangle) context.getBean("triangle"); triangle.draw(); } }Now run the example:
Output:Jun 18, 2012 11:40:04 AM org.springframework.context.support.AbstractApplicationContext prepareRefreshINFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@145d068: startup date [Mon Jun 18 11:40:04 IST 2012]; root of context hierarchyJun 18, 2012 11:40:04 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitionsINFO: Loading XML bean definitions from class path resource [spring.xml]Jun 18, 2012 11:40:05 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletonsINFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@14c1103: defining beans [triangle]; root of factory hierarchyEquilateral Triangle Drawn
Spring Related Topics you may like
- Spring Interview Questions and Answers
- Spring AOP Interview Questions and Answers
- Spring MVC Interview Questions
- Spring Security Interview Questions and Answers
- Spring REST Interview Questions and Answers
- Spring Boot Interview Questions and Answers
- Spring Boot Microservices Interview Questions and Answers
- Dependency Injection (DI) in Spring
- Spring IoC Container
- What is Bean Factory in Spring
- ApplicationContext in Spring
- Bean Autowiring in Spring
- Spring Bean Scopes
- Create Custom Bean Scope in Spring Example
- Using ApplicationContextAware in Spring
- Spring Bean Life Cycle and Callbacks
- BeanPostProcessor in Spring
- BeanFactoryPostProcessor in Spring
- Annotations in Spring and Based Configuration
- Spring JSR-250 Annotations
- JSR 330 Annotations in Spring
- Spring @Component, @Repository, @Service and @Controller Stereotype Annotations
- Method injection with Spring using Lookup method property
- Spring AOP-Introduction to Aspect Oriented Programming
- @Aspect Annotation in Spring
- Spring AOP AspectJ @Before Annotation Advice Example
- Spring AOP Before Advice Example using XML Config
- Spring AOP AspectJ @After Annotation Advice Example
- Spring AOP After Advice Example using XML Config
- Spring AOP AspectJ @AfterReturning Annotation Advice Example
- Spring AOP After-Returning Advice Example using XML Config
- Spring AOP AspectJ @AfterThrowing Annotation Advice Example
- Spring AOP After Throwing Advice Example using XML Config
- Spring AOP AspectJ @Around Annotation Advice Example
- Spring AOP Around Advice Example using XML Config
- Spring AOP Proxies in Spring
- Spring AOP Transaction Management in Hibernate
- Spring Transaction Management
- Spring Declarative Transaction Management Example
- Spring AOP-Ordering of Aspects with Example
- Spring Security Java Based Configuration with Example
- Spring Security XML Namespace Configuration Example
In Next Chapter we will discuss about Injecting of Constructor and Object in Application.
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