SpringMVC WebApplicationInitializer Arayüzü

Giriş

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import org.springframework.web.WebApplicationInitializer;

WebApplicationInitializer Ne İşe Yarar ?

Açıklaması şöyle. Yani web.xml ile yerine kodla Servletcontext nesnesini yaratılmasını sağlar

With the WebApplicationInitializer, Spring Framework Web MVC applications can now rid themselves of web.xml. Additional configuration/implementations are available for programmatically registering the DispatcherServlet and configuring the Spring container

WebApplicationInitializer Arayüzünü Kim Çalıştırır

SpringServletContainerInitializer çalıştırır

Örnek

Şöyle yaparız.

public class Initializer implements WebApplicationInitializer {

  public void onStartup(ServletContext servletContext)
    throws ServletException {
    AnnotationConfigWebApplicationContext ctx = 
      new AnnotationConfigWebApplicationContext();

    ctx.scan("com.package.name");
    //the rest of initialization
  }
}

Örnek
Şöyle yaparız.

public class WebAppInitializer implements WebApplicationInitializer{
   @Override
  public void onStartup(ServletContext container) throws ServletException {
    AnnotationConfigWebApplicationContext context =
      new AnnotationConfigWebApplicationContext();
    context.setConfigLocation("com.abc.webapp.config");
    container.addListener(new ContextLoaderListener(context));
    ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcherServlet",
      new DispatcherServlet(context));
    dispatcher.setLoadOnStartup(1);
    dispatcher.addMapping("/");
  }
}