public class User {
private String name;
private Integer age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public User(String name, Integer age) {
super();
this.name = name;
this.age = age;
}
public User() {
super();
}
@Override
public String toString() {
return "User [name=" + name + ", age=" + age + "]";
}
}
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="user/add" method="post">
<!-- 必须是User类中对应的属性名 -->
用户名：<input type="text" name="name">
年龄：<input type="text" name="age">
<button type="submit">提交</button>
</form>
</body>
</html>
@Controller
@RequestMapping("/user")
public class MyController {
/**
* 转发 默认格式
@RequestMapping(value = "/add")
public ModelAndView add(User user) {
System.out.println("进入了add......");
ModelAndView mv = new ModelAndView();
mv.addObject("name", user.getName()).addObject("age", user.getAge())
.setViewName("forward:/WEB-INF/jsp/success.jsp");// 设置返回的视图
// .setViewName("/WEB-INF/jsp/success.jsp");// 默认就是转发
return mv;
}*/
/**
* 重定向 ：
* 01.客户端的行为！ 不能访问/WEB-INF/下面的资源
* 02. 以访问的路径为准，所以之前09项目中会有一个user/
* 03.还能携带上一次的数据
* 04.redirect:/success.jsp 加上/ 就是以项目的根目录为准
*/
@RequestMapping(value = "/add")
public ModelAndView add(User user) {
System.out.println("进入了add......");
ModelAndView mv = new ModelAndView();
mv.addObject("name", user.getName()).addObject("age", user.getAge())// 携带数据
.setViewName("redirect:/success.jsp");// 设置返回的视图 重定向
return mv;
}
}
<body>
<!--
param.name 底层执行的代码 就是request.getParameter("name")
requestScope.nage 底层执行的代码 就是request.getAttribute("name") 作用域查询
-->
<h1>webroot success页面</h1>
${param.name}<br/>
${param.age}
</body>
==================重定向到方法====================
@Controller
@RequestMapping("/user")
public class MyController {
/**
* 跳转到/list
* Model:跳转list方法时 携带的数据
*/
@RequestMapping(value = "/add")
public String add(User user, Model mv) {
System.out.println("进入了add......");
// model中 增加数据
mv.addAttribute("name", user.getName()).addAttribute("age",
user.getAge());
// 跳转到list 不能加 / 这就是后台路径
return "redirect:list";
}
@RequestMapping(value = "/list")
public String list(User user) {
System.out.println("进入了list......");
System.out.println(user.getName());
System.out.println(user.getAge());
return "/success.jsp";// 转发到 webroot下的success.jsp
}
}
原创文章，作者：奋斗，如若转载，请注明出处：https://blog.ytso.com/12162.html