SpringMVC（四）数据模型和@SessionAttributes注解

ModelAndView

//测试处理模型数据ModelAndView
@RequestMapping("testModelAndView")
public ModelAndView testModelAndView(){
	ModelAndView modelAndView = new ModelAndView("success");
	modelAndView.addObject("time",new Date());
	return modelAndView;
}

请求路径：

testModelAndView

成功跳转页面如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







	success!!!
	

	time:${requestScope.time }

页面输出如下：

time:Sun Oct 02 22:28:25 CST 2016

Map

//测试处理模型数据Map
@RequestMapping("testMap")
public String testMap(Map map){
	map.put("names", Arrays.asList("kaka","sheva","Inzaghi"));
	return "success";
}

请求路径：

testMap

成功跳转页面如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







	success!!!
	

	names:${requestScope.names }

页面输出如下：

names:[kaka, sheva, Inzaghi]

@SessionAttributes注解

headler类

@SessionAttributes(value = {"player"},types={String.class})
@Controller
public class TestPojo {

	//测试SessionAttributes注解用法
	@RequestMapping("testSessionAttributes")
	public String testSessionAttributes(Map map){
		Player p = new Player();
		p.setName("kaka");
		p.setAge(22);
		map.put("player", p);
		map.put("team", "milan");
		return "success";
	}
}

请求路径：

testSessionAttributes

跳转的jsp页面：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







	success!!!
	

	request player:${requestScope.player }
	

	session player:${sessionScope.player }
	

	request team:${requestScope.team }
	

	session team:${sessionScope.team }

页面输出结果：

request player:Player [name=kaka, age=22, team=null]
session player:Player [name=kaka, age=22, team=null]
request team:milan
session team:milan