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 · Accepted 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 <context-param>:

<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>

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

User · Answer

You can also load the context while defining the servlet itself  WebApplicationContext      lt servlet gt       lt servlet-name gt admin lt  servlet-name gt       lt servlet-class gt org springframework web servlet DispatcherServlet lt  servlet-class gt       lt init-param gt         lt param-name gt contextConfigLocation lt  param-name gt         lt param-value gt                   WEB-INF spring   xml              lt  param-value gt       lt  init-param gt       lt load-on-startup gt 1 lt  load-on-startup gt     lt  servlet gt     lt servlet-mapping gt       lt servlet-name gt admin lt  servlet-name gt       lt url-pattern gt   lt  url-pattern gt     lt  servlet-mapping gt    rather than  ApplicationContext    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     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

[java] Loading context in Spring using web.xml

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