Spring MVC returns different views for different request headers

All of the functions in the work are requested to process each page, but later, most of the ways to change to Ajax are told.

And you don't want to go back and copy the code and change it.

It then uses spring's AOP to process different views based on the HTTP request header.

First, configure the interceptor in the configuration file

<mvc:interceptors>
    	<bean class= "**.**. Viewinterceptor "/>
</mvc:interceptors>

Viewinterceptor Code:

Import Javax.servlet.http.HttpServletRequest;
Import Javax.servlet.http.HttpServletResponse;

Import Org.apache.log4j.Logger;
Import Org.springframework.web.servlet.ModelAndView;
Import Org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
Import Org.springframework.web.servlet.view.json.MappingJacksonJsonView;

public class Viewinterceptor extends handlerinterceptoradapter{
	private Logger Logger = Logger.getlogger ( Viewinterceptor.class);
	@Override public
	void Posthandle (HttpServletRequest request,
			httpservletresponse response, Object handler,
			Modelandview Modelandview) throws Exception {
		String RequestType = Request.getheader ("X-requested-with"); C12/>if (requesttype!=null) {
			Mappingjacksonjsonview view = new Mappingjacksonjsonview ();
			View.setattributesmap (Modelandview.getmodelmap ());
			Modelandview.setview (view);
		}
		Super.posthandle (Request, response, Handler, Modelandview);
	}
	
}

The controller is configured as follows:

@RequestMapping (value = "/CHOOSEOTHER.AF") public
	Modelandview Chooseother (httpservletrequest request,
			HttpServletResponse response,string categoryId) {
		map<string, object> Map = new hashmap<string, object> ();
		Map.put ("ParentID", categoryId);
		list<category> list = Categoryservice.getlistbymap (map);
		Map.put ("list", list);
		return new Modelandview ("", map);
	

This makes it possible for the same URL to return different content based on different requests.

PS: Refer to this article http://haohaoxuexi.iteye.com/blog/1750680 to learn about interceptor interceptors