spring和springMVC的上下文

package com.tgb.web.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import org.springframework.web.servlet.support.RequestContextUtils;

@Controller
public class SpringController {
//	@Resource(name="springService")
//	private ISpring springService;

@RequestMapping("/spring/get")
public String get(HttpServletRequest request){
//spring的上下文
WebApplicationContext ac1 = WebApplicationContextUtils.getWebApplicationContext(request.getSession().getServletContext());
//springMVC的上下文
WebApplicationContext ac2 = RequestContextUtils.getWebApplicationContext(request);

//通过spring上下文拿到bean
//ISpring springService = (ISpring)ac1.getBean("springService");

//通过springMVC上下文拿到bean
ISpring springService = (ISpring)ac2.getBean("springService");
System.out.println(springService.get());
return "/success";
}
}