第三章：域对象共享数据 - 3.2、使用ModelAndView向request域对象共享数据 - 《SSM》

index：

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>首页</h1>
    <a th:href="@{/testModelAndView}">获取request域中的数据</a><br>
</body>
</html>

controller：

package com.way.controller;
import com.way.pojo.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
@Controller
public class MyController2 {
    @RequestMapping(value = "/testModelAndView")
    public ModelAndView testModelAndView(){
        ModelAndView modelAndView = new ModelAndView();
        //保存到request中
        modelAndView.addObject("key1","helloRequest1");
        modelAndView.addObject("key2","helloRequest2");
        //转发到target页面
        modelAndView.setViewName("target");
        return modelAndView;
    }
}

target页面：

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>target页面</h1>
    <p th:text="${key1}"></p><!--testScope:是controller中request域中的key1的value-->
    <p th:text="${key2}"></p><!--testScope:是controller中request域中的key2的value-->
</body>
</html>

浏览器输出：