Spring bean factory method annotation. The lookup typically involves a prototype bean, as in the scenario described in the preceding section. Jan 8, 2024 · While we commonly create beans in Spring using constructor or field injection, we can also create Spring beans using factory methods. Jan 11, 2024 · It takes care of the lifecycle of a bean by instantiating it and calling appropriate destruction methods It is capable of creating associations between dependent object while instantiating them It is important to point that BeanFactory does not support the Annotation-based dependency Injection whereas ApplicationContext, a superset of BeanFactory does Do have a read on Application Context to The @Bean annotation is used to indicate that a method instantiates, configures, and initializes a new object to be managed by the Spring IoC container. Lookup method injection is the ability of the container to override methods on container-managed beans and return the lookup result for another named bean in the container. To access the FactoryBean, you just need to add a “&” before the bean name. For those familiar with Spring’s <beans/> XML configuration, the @Bean annotation plays the same role as the <bean/> element. ) or through Java and XML configuration. I was wondering how I could implement the simple factory pattern with Spring 3 annotations. If we want to name it differently, we can do so with the name or the value arguments of this annotation (the argument value is an alias for the argument name): @Bean("engine") Engine getEngine() { The framework provides many implementations of factory beans and -- when using Spring's XML config -- factory beans are easy to use. Aug 8, 2024 · Although the Spring container uses the FactoryBean ‘s getObject () method’s return value as the bean, you can also use the FactoryBean itself. However, there are cases where we need a more flexible and controlled way to create beans — this is where FactoryBean comes into play. The resulting bean has the same name as the factory method. You can use @Bean -annotated methods with any Spring @Component. 0, I can't find a satisfactory way of using factory beans with the annotation-based configuration (née JavaConfig). This is useful when we need to create beans that cannot be created using ‘ new ‘ keyword and involve complex initialization or configuration. We developed a notification service that uses the Factory Method pattern to create different types of notifications based on user preferences. Note: Factory methods are those methods that return the instance of the class. However, in Spring 3. The Spring Framework implements this method injection by using bytecode generation from the CGLIB library to dynamically Jul 23, 2025 · The first and foremost thing when we talk about Spring is dependency injection which is possible because Spring is a container and behaves as a factory of Beans. 1. Jan 8, 2024 · } Copy Spring calls these methods when a new instance of the return type is required. Jul 23, 2025 · To inject dependencies using the factory method, we will use two attributes factory-method and factory-bean of bean elements. Oct 22, 2023 · In Spring Framework, the FactoryBean interface is used to define a custom factory for creating and configuring the bean instances. Just like the BeanFactory interface is the simplest container providing an advanced configuration mechanism to instantiate, configure, and manage the life cycle of beans. Feb 23, 2025 · When we work with Spring, we usually define beans using annotations (@Component, @Service, @Repository, etc. Oct 12, 2024 · In this tutorial, we explored the Factory Method design pattern and its implementation in a Spring Boot application. In this tutorial, we will delve into creating Spring beans using both instance and static factory methods. I saw in the documentation that you can create beans that call the factory class and run a factory method. What is a FactoryBean in Spring? In Spring, typically a bean is created using one of its constructors using the . rad jkuzhxh dyn6 4e5ws4 u6yjri aswq be61s bzl4e dgm gk94