Is it mandatory to have the “id” property in Bean/ApplicationContext Xml


Typical Bean xml file looks like below:

<?xml version=”1.0″ encoding=”UTF-8″?>
<beans xmlns=”http://www.springframework.org/schema/beans&#8221;
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance&#8221;
xsi:schemaLocation=”http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd&#8221; >

<bean class=”in.malliktalksjava.service.MyServiceImpl”>

<property name=”repository” ref=”someDAO”/>
</bean>

<bean id=”someDAO” class=”in.malliktalksjava.dao.SomeDao”/>

</beans>

MyServiceImpl Bean is anonymous because no id is supplied explicitly. Thus Spring container generates a unique id for that bean. It uses the fully qualified class name and appends a number to them. However, if you want to refer to that bean by name, through the use of the ref element you must provide a name (see Naming Beans section of the Spring reference manual). To be correct, the 2nd bean has to declare a someDAO id attribute in order to be reference by the repository property of the first bean

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I born in Good cultural place called India. My family is traditional family. We fallow all Indian traditions.

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Mallikarjun Gunda

This is Mallikarjun Gunda, I am working as a software professional. Blogging is my Passion. This blog contains the posts on Java related technologies and programming languages. I am happy to share my knowledge through the blogs.

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