There are two ways via which you can inject dependency in spring
Part-1:Introduction to spring framework Part-2:Dependency injection(ioc) in spring Part-3:Spring hello world example in eclipse Part-4:Dependency injection via setter method in spring Part-5:Dependency injection via constructor in spring Part-6:Spring Bean scopes with examples Part-7:Initializing collections in spring Part-8:Beans Autowiring in spring Part-9:Inheritance in Spring Part-10:Spring ApplicationContext Part-11:Spring lifetime callbacks Part-12:BeanPostProcessors in Spring Part-13:Annotation based Configuration in spring
- By configuring XML.
- By using annotation.
You might think what if you have done both i.e.used annotations and XML both.In that case,XML configuration will override annotations because XML configuration will be injected after annotations.
Now annotations based configuration is turned off by default so you have to turn it on by entering <context:annotation-config/> into spring XML file.
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <context:annotation-config/> <!-- beans declaration goes here --> </beans>
Now you are ready to use annotations in your code.Let us discuss few important annotations in spring