data binding - How can i register a global custom editor in Spring-MVC?

Question

I use the following custom editor in MANY Spring-MVC controllers according to:

A controller

binder.registerCustomEditor(BigDecimal.class, new CustomNumberEditor(BigDecimal.class, NumberFormat.getNumberInstance(new Locale("pt", "BR"), true));

Other controller

binder.registerCustomEditor(BigDecimal.class, new CustomNumberEditor(BigDecimal.class, NumberFormat.getNumberInstance(new Locale("pt", "BR"), true));

Another controller

binder.registerCustomEditor(BigDecimal.class, new CustomNumberEditor(BigDecimal.class, NumberFormat.getNumberInstance(new Locale("pt", "BR"), true));

Notice the same custom editor registered

Question: how can i set up a global custom editor like this one in order to avoid set up each controller ?

regards,

Answer 1

Starting Spring 3.2, you can use @ControllerAdvice instead of using @ExceptionHandler, @InitBinder, and @ModelAttribute in each Controller. They will be applied to all @Controller beans.

import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.context.request.WebRequest;

@ControllerAdvice
public class GlobalBindingInitializer {
  @InitBinder
  public void registerCustomEditors(WebDataBinder binder, WebRequest request) {
    binder.registerCustomEditor(BigDecimal.class, new  CustomNumberEditor(BigDecimal.class, NumberFormat.getNumberInstance(new Locale("pt", "BR"), true));
  }
}

If you had started out with Spring Roo generated code, or limit the annotations scanned by component-scan using include-filter, then add the required filter in webmvc-config.xml

<!-- The controllers are autodetected POJOs labeled with the @Controller annotation. -->
<context:component-scan base-package="com.sensei.encore.maininterface" use-default-filters="false">
  <context:include-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
  <!-- ADD THE BELOW LINE -->
  <context:include-filter expression="org.springframework.web.bind.annotation.ControllerAdvice" type="annotation"/>
</context:component-scan>