一、复现上课案例package com.example.spring.controller; import org.springframework.web.bind.annotation.*; RestController public class HelloController { //添加一个简单的HelloController RequestMapping(/hello) public String hello(){ System.out.println(Hello World122221 ~); return Hello World1234 ~; } }reg1.jsp% page contentTypetext/html;charsetUTF-8 languagejava % html head title用户注册/title /head body h2用户注册/h2 %-- 表单数据提交到 /reg 这个URL使用POST方法 --% form action/reg1 methodpost 姓名input typetext namename /br/br/ 年龄input typetext nameage /br/br/ input typesubmit value提交注册 / /form /body /htmlreg-result1.jsp% page contentTypetext/html;charsetUTF-8 languagejava % html head title注册结果/title /head body h4使用 request.getParameter() 获取参数值/h4 h2注册信息如下/h2 %-- 使用EL表达式显示Controller中存入Model的数据 --% 姓名${userName}br/ 年龄${userAge}br/ a href/reg1返回注册页面/a /body /htmlRegrequestController.javapackage com.example.spring.controller; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import jakarta.servlet.http.HttpServletRequest; Controller public class RegrequestController { // 处理访问 /reg 的GET请求显示注册页面 GetMapping(/reg1) public String showRegPage() { // 返回的逻辑视图名是 reg根据配置会映射到 /WEB-INF/jsp/reg.jsp return reg1; } // 处理来自注册页面的POST表单提交 PostMapping(/reg1) public String handleReg(HttpServletRequest request, Model model) { // 使用 request.getParameter() 获取参数值 String name request.getParameter(name); String ageParam request.getParameter(age); // 将年龄参数转换为 Integer 类型 Integer age null; if (ageParam ! null !ageParam.isEmpty()) { age Integer.parseInt(ageParam); } // 将接收到的数据存入Model以便在结果页面上显示 model.addAttribute(userName, name); model.addAttribute(userAge, age); // 返回逻辑视图名 reg-result映射到 /WEB-INF/jsp/reg-result.jsp return reg-result1; } }二、apifox中建立接口三、完成新页面reg3.jsp% page contentTypetext/html;charsetUTF-8 languagejava % html head title用户注册reg3/title /head body h23、完成新的页面/h2 %-- methodpost 提交到当前 /reg3 --% form action/reg3 methodpost p姓名input typetext namename/p p年龄input typetext nameage/p p性别 input typeradio namegender valuemale idman label forman男/label input typeradio namegender valuefemale idwoman label forwoman女/label /p pinput typesubmit value提交注册/p /form /body /htmlreg-result3.jsp% page contentTypetext/html;charsetUTF-8 languagejava % html head title注册结果/title /head body h2注册信息如下/h2 p姓名${username}/p p年龄${userAge}/p p性别${userGender}/p pa href/reg3返回注册页面/a/p /body /htmlReg3Controller.javapackage com.example.spring.controller; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; Controller RequestMapping(/reg3) public class Reg3Controller { // 访问表单页面 GET RequestMapping public String showForm(){ // 跳转到表单页面 reg3.jsp return reg3; } // 提交表单 POST PostMapping public String submitReg( RequestParam String name, RequestParam int age, RequestParam String gender, Model model ){ // 把参数传给结果页面 model.addAttribute(username, name); model.addAttribute(userAge, age); model.addAttribute(userGender, gender); // 跳转结果页 reg3-result.jsp return reg-result3; } }四、在apifox中新建接口并测试。