Question

I just started learning spring.
what should be avoided while writing an ApplicationContext xml file in application development using spring so that the code will be efficient?
(what i meant is good practice that can be followed while writing ApplicationContext xml file and please don’t give me a negative vote, it is a genuine doubt)

Answer 1

There are several things to consider below are just a few things to consider

1) Modularity – we can divide applicationContext.xml module wise and import that in main applicationContext.xml
Example : applicationContext.xml code snippest

<import resource="classpath:dbConfig.xml"/>
<import resource="classpath:userModuleContext.xml"/>
<import resource="classpath:customerModuleContext.xml"/>

2) Database configuration can be stored in seperated properties file and then used in applicationContext.xml using PropertyPlaceholderConfigurer

3) Bean scope should be appropriate like prototype, singleton, request, session

singleton – means single instance per spring container. It may cause problem in clustered environment.

4) Bean Dependancy Injection should be appropriate, so that it should not cause circular dependancy like A —> B —> C —> A

Many more ….