第三章：域对象共享数据 - 3.1、使用ServletAPI向request域对象共享数据 - 《SSM》

HTML-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="@{/testServletAPI}">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 javax.servlet.http.HttpServletRequest;

@Controller
public class MyController2 {

    @RequestMapping(value = "/testServletAPI")
    public String testServletAPI(HttpServletRequest request){
        request.setAttribute("testScope","hello");
        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="${testScope}"></p><!--testScope:是controller中request域中的key-->
</body>
</html>

浏览器输出结果：