package com.test.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletRequest;
@Controller
public class StartMainController
{
@RequestMapping("/1")
public String home1()
{
return "hello";
}
@RequestMapping("/2")
@ResponseBody
public String home2()
{
return "123";
}
@RequestMapping("/3")
public String home3(Model model)
{
model.addAttribute("a","123");
model.addAttribute("b","abc");
model.addAttribute("c","def");
return "hello";
}
@RequestMapping(value = "/4")
public String home4(HttpServletRequest request, Model model)
{
String firstName = request.getParameter("firstName");
System.out.println(firstName);
model.addAttribute("firstName",firstName);
return "hello";
}
}
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<p th:text="${firstName}">name</p>
</body>
</html>
http://localhost:8080/4?firstName=213age

本文展示了如何使用Spring MVC框架创建控制器并处理HTTP请求。通过`@RequestMapping`注解映射URL,返回不同的响应。在`home3`方法中,将属性添加到模型并渲染`hello`视图。同时,在`home4`方法中,从请求参数获取`firstName`,将其添加到模型并返回视图。前端HTML页面使用Thymeleaf模板引擎展示`firstName`的值。
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