SpringMvc—域对象共享数据和视图

一、向request域创建对象

先创建首页:

在testController这个类中:

java 复制代码
package com.pon.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class testController {
    @RequestMapping("/")
    public String index(){
        return "index";
    }
}

index.html:

html 复制代码
<!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>
</body>
</html>

1.使用servletAPI向request域对象共享数据

在scopeController这个类中:

java 复制代码
package com.pon.controller;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class scopeController {
@RequestMapping("/scope")
    public String Scope(HttpServletRequest request){
    request.setAttribute("GetscopeObject","Hello Servlret");
        return "success";
    }
}

在success.html中:

html 复制代码
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>success</h1><br>
<p th:text="${GetscopeObject}"></p>
</body>
</html>

在首页中要跳转到success界面,index.html:

html 复制代码
<!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="@{/scope}">Servlet API域对象共享</a>
</body>
</html>

2.使用ModelAndView向request域对象共享数据

在scopeController中:

java 复制代码
@Controller
public class scopeController {
@RequestMapping("/mv")
    public ModelAndView testmv(){
     ModelAndView mav=new ModelAndView();
        //向请求域request共享数据
        mav.addObject("GetscopeObject","Hello ModelandView");
        //设置视图名称
        mav.setViewName("success");
        return mav;
    }
}

在success.html中:

html 复制代码
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>success</h1><br>
<p th:text="${GetscopeObject}"></p>
</body>
</html>

3.使用Model向request域对象共享数据

在scopeController中:

java 复制代码
@Controller
public class scopeController {
 @RequestMapping("/m")
    public String testModel(Model model){
    model.addAttribute("GetscopeObject","hello model");
    return "success";
    }
}

success.html:

html 复制代码
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>success</h1><br>
<p th:text="${GetscopeObject}"></p>
</body>
</html>

4.使用Map向request域对象共享数据

在scopeController中:

java 复制代码
@Controller
public class scopeController {
@RequestMapping("/map")
    public String testMap(Map<String, Object> map){
    map.put("GetscopeObject","hello map");
    return "success";
    }
}

5.使用ModelMap向request域对象共享数据

在scopeController中:

java 复制代码
@Controller
public class scopeController {
 @RequestMapping("/modelmap")
    public String testMM(ModelMap modelMap){
    modelMap.addAttribute("GetscopeObject","hello ModelMap");
    return "success";
    }
}

6.Model、ModelMap、Map三者之间的关系

二、向session域共享数据

在scopeController中:

java 复制代码
@Controller
public class scopeController {
 @RequestMapping("/testsession")
    public String testMM(HttpSession session){
      session.setAttribute("testSession","hello session");
      return "success";
    }
}

在success.html:

html 复制代码
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>success</h1><br>
<p th:text="${session.testSession}"></p>
</body>
</html>

三、向application域共享数据

在scopeController中:

java 复制代码
@Controller
public class scopeController {@RequestMapping("/application")
    public String testap(HttpSession session){
     ServletContext application= session.getServletContext();
     application.setAttribute("testapplication","hello,servletcontext=application");
     return "success";
    }
}

success.html:

html 复制代码
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>success</h1><br>
<p th:text="${application.testapplication}"></p>
</body>
</html>

四、SpringMvc的视图

1.ThymeleafView

在viewController类中:

java 复制代码
package com.pon.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class viewController {
    @RequestMapping("/view")
    public String view(){
        return "view";
    }
    //超链接的路径
    @RequestMapping("/testview")
    public String testview(){
        return "hi";
    }
}

view.html:

html 复制代码
<!DOCTYPE html>
<html lang="en"xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<a th:href="@{/testview}">ThyleleafView</a>
</body>
</html>

hi.html:

html 复制代码
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
你好
</body>
</html>

2.转发视图

在viewController类中:

java 复制代码
package com.pon.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class viewController {
    @RequestMapping("/view")
    public String view(){
        return "view";
    }
    @RequestMapping("/testview")
    public String testview(){
        return "hi";
    }
    @RequestMapping("/testforword")
    public String testfoeword(){
        return "forward:/testview";
    }
}

view.html:

html 复制代码
<!DOCTYPE html>
<html lang="en"xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<a th:href="@{/testview}">ThyleleafView</a>
<a th:href="@{/testforword}">转发视图</a>
</body>
</html>

hi.html:

html 复制代码
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
你好
</body>
</html>

3.重定向视图

在viewController类中:

java 复制代码
@Controller
public class viewController {
    @RequestMapping("/view")
    public String view(){
        return "view";
    }
    @RequestMapping("/testview")
    public String testview(){
        return "hi";
    }
    @RequestMapping("/testforword")
    public String testfoeword(){
        return "forward:/testview";
    }
    @RequestMapping("/testredirect")
    public String testRedirect(){
        return "redirect:/testview";
    }
}

view.html:

html 复制代码
<!DOCTYPE html>
<html lang="en"xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<a th:href="@{/testview}">ThyleleafView</a>
<a th:href="@{/testforword}">转发视图</a>
<a th:href="@{/testredirect}">重定向视图</a>
</body>
</html>


4.视图控制器view-controller

相关推荐
代码方舟2 分钟前
O2O二手车交易平台B端车商管理后台:基于天远车信盟出险构建自动化车况评估网关
java·运维·人工智能·自动化
爱学堂IT分享4 分钟前
图灵Java互联网架构师六期
java·开发语言
坐吃山猪6 分钟前
【多线程】Semaphore使用
java·数据库·oracle·多线程
数智启示录13 分钟前
PostgreSQL 内存调优实战(第 12 篇):work_mem 只调大 64 倍,峰值为什么远不止 64 倍
运维·数据库·经验分享·postgresql·面试
秋名RG25 分钟前
Java 核心特性一览
java·开发语言
霸道流氓气质30 分钟前
Spring AI 技术细节:RAG QuestionAnswerAdvisor 设计与实现
java·人工智能·spring
a11177635 分钟前
3D 脑图谱 / Bilingual 3D Brain Atlas 项目
前端
T1mzhou42 分钟前
ARM64 Linux 6.10内核启动流程2-rootfs 怎么挂上
linux·服务器·前端
平头哥AI1 小时前
Day 01 | go run 跑通第一个 Go 程序,go build 留下一个能拷走的 exe
开发语言·后端·golang
斑马1391 小时前
Linux软件编程学习笔记(十二)——TCP并发服务器模型
java·服务器·网络