Spring Bean

Besides factory bean, you can also use a factory method to create spring bean, but the factory method must be public static and return the desired spring bean class type. This article will show you examples of how to do that.

In Spring Framework, there are two methods that you can use to achieve spring bean Dependency Injection ( DI ). Use the spring bean setter method. Use the spring bean’s constructor.

If you want to set your Spring bean’s property value in a bean configuration file, you can use the below methods. Use property tag under bean tag. <bean id=”beanPropsInjection” name=”beanPropsInjection” class=”com.dev2qa.example.spring.BeanPropertiesInjection”> <property name=”loginUserName” value=”dev2qa.com”></property> <property name=”loginPassword” value=”dev2qa.com”></property> </bean> Use bean tag attribute prefixed with the p schema. But before do the below configuration, you should …

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After you configure <context:component-scan base-package=”com.dev2qa.examples”> in Spring bean configuration xml file, Spring container can automatically scan the java files under base-pack and it’s sub packages. If it has scanned the classes with annotations like @Component, @Service, @Repository or @Controller, the container will register these classes as managed bean.

In Spring, bean scope is defined by it’s type, different types of Spring bean instances can be used in different scenarios. There are totally 5 scope types by default.