Spring MVC includes a concept for preprocessing and post-processing a handler's execution. By
implementing a HandlerInterceptor it is possible for example to modify the
ModelAndView of all executed handlers.
Example:
import org.springframework.web.servlet.HandlerInterceptor;
public class MyInterceptor implements HandlerInterceptor {
...
void postHandle(HttpServletRequest req, HttpServletResponse res,
Object handler, ModelAndView modelAndView)
throws Exception {
// adds a new model object to the model and view
modelAndView.addObject("message", "Hello World");
}
...
}
A custom interceptor can be associated with all handlers by adding the interceptor bean to a
global list bean named handlerInterceptors that defined by the CAE framework. A
customizer might be used here, for example
<customize:append id="addMyInterceptor" bean="handlerInterceptors"> <list> <bean class="com.mycompany.MyInterceptor"/> </list> </customize:append>
See http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/html/mvc.html#mvc-handlermapping for more information about handler interceptors.
 |  |  |
 |