index**页面**：

    1. <!DOCTYPE html>
    2. <html lang="en" xmlns:th="http://www.thymeleaf.org">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <title>Title</title>
    6. </head>
    7. <body>
    8.     <h1>首页</h1>
    10.     <a th:href="@{/testModelMap}">使用ModelMap向request域对象取出共享数据</a><br>
    12. </body>
    13. </html>

    controller：

    package com.way.controller;

import com.way.pojo.User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;

@Controller
public class MyController2 {

    @RequestMapping(value = "/testModelMap")
    public String testModelMap(ModelMap modelMap){
        modelMap.addAttribute("key1","Mapvalue1");
        modelMap.addAttribute("key2","Mapvalue2");
        return "target";
    }
}

    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="${key1}"></p>
    <p th:text="${key2}"></p>
</body>
</html>

    浏览器输出结果：
    image.png