Question

I want to know the best practice of configuring Spring XML configuration files

1- how many configuration files should I have ?
2- contents of each file.

Right now, I have 3 xml configuration files for my Spring application, based on some tutorial:

1- app-config.xml: which contains the propertyPlaceholder configuration, and hibernate configuration, and following annotation configuration.

<context:component-scan base-package="com.spring.sample" />

    <!-- declares support for general annotations such as @Required, @Autowired,         @PostConstruct -->
    <context:annotation-config />

    <!-- enable the configuration of transactional behavior based on annotations -->
    <tx:annotation-driven transaction-manager="transactionManager" />

2- mvc-config.xml: which contains annotation support tag, messageSource configuration, mvc interceptor, and localResolver

3- servlet-config.xml: which contains the viewResolver for jsp, and the following tag:

<context:component-scan base-package="com.spring.sample.controller"/>

Answer 1

see this answer. Spring Configuration

You layout is good, the answer will explain why I use a similar.