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Tutorials > Spring MVC > XML-based configuration

XML-based configuration

XML-based configuration in Spring MVC refers to the use of an XML file to configure the components of a Spring MVC application, such as controllers, request mappings, and bean definitions.

XML-based configuration provides a traditional and well-established way to configure Spring MVC applications. It is considered more verbose and less flexible than Java-based configuration, but still widely used in many applications.

Some common steps in XML-based configuration in Spring MVC are:

  1. Create a XML configuration file: The XML configuration file is used to define the configuration information for the Spring MVC application. This file is typically named dispatcher-servlet.xml.

Example:

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

  <mvc:annotation-driven />

  <bean class="com.example.MyController" />
  <bean class="com.example.MyService" />

</beans>

In the example above, the XML configuration file is defined with the beans root element, and the namespace declarations for the Spring framework.

  1. Configure components using XML: You can configure components such as controllers, request mappings, and bean definitions using XML elements.

Example:

<bean class="com.example.MyController" />
<bean class="com.example.MyService" />

In the example above, two beans are defined in the XML configuration file: MyController and MyService.

  1. Enable the configuration: To enable the XML configuration, you need to add the following code to your application's main class:
public class MyApplication {

  public static void main(String[] args) {
    ApplicationContext context = new ClassPathXmlApplicationContext("dispatcher-servlet.xml");
    ...
  }

}

In the example above, the ClassPathXmlApplicationContext class is used to load the XML configuration file, and the dispatcher-servlet.xml file is passed as an argument to the constructor.

XML-based configuration in Spring MVC is a traditional and well-established way to configure your application, but it can be more verbose and less flexible than Java-based configuration. Nevertheless, it is still widely used in many applications.



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