Loading context in Spring using web xml

Question

Is there a way that a context can be loaded using web xml in a Spring MVC application

User · Answer

You can also load the context while defining the servlet itself (WebApplicationContext)

  <servlet>
    <servlet-name>admin</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>
                /WEB-INF/spring/*.xml
            </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>admin</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

rather than (ApplicationContext)

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/applicationContext*.xml</param-value>
</context-param>

<listener>
   <listener-class>
        org.springframework.web.context.ContextLoaderListener
   </listener-class>
</listener>

or can do both together.

Drawback of just using WebApplicationContext is that it will load context only for this particular Spring entry point (DispatcherServlet) where as with above mentioned methods context will be loaded for multiple entry points (Eg. Webservice Servlet, REST servlet etc)

Context loaded by ContextLoaderListener will infact be a parent context to that loaded specifically for DisplacherServlet . So basically you can load all your business service, data access or repository beans in application context and separate out your controller, view resolver beans to WebApplicationContext.

User · Answer

You can also specify context location relatively to current classpath  which may be preferable   lt context-param gt       lt param-name gt contextConfigLocation lt  param-name gt       lt param-value gt classpath  applicationContext  xml lt  param-value gt   lt  context-param gt    lt listener gt       lt listener-class gt org springframework web context ContextLoaderListener lt  listener-class gt   lt  listener gt

User · Answer

From the spring docs  Spring can be easily integrated into any Java-based web framework  All you need to do is to declare the ContextLoaderListener in your web xml and use a contextConfigLocation  to set which context files to load   The  lt context-param gt     lt context-param gt       lt param-name gt contextConfigLocation lt  param-name gt       lt param-value gt  WEB-INF applicationContext  xml lt  param-value gt   lt  context-param gt    lt listener gt      lt listener-class gt          org springframework web context ContextLoaderListener     lt  listener-class gt   lt  listener gt     You can then use the WebApplicationContext to get a handle on your beans   WebApplicationContext ctx   WebApplicationContextUtils getRequiredWebApplicationContext servlet getServletContext     SomeBean someBean    SomeBean  ctx getBean  someBean      See http   static springsource org spring docs 2 5 x api org springframework web context support WebApplicationContextUtils html for more info

[java] Loading context in Spring using web.xml

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