SSM框架——thymeleaf学习总结
本人关于thymeleaf的学习源自:
https://www.bilibili.com/video/BV1qy4y117qi
1、thymeleaf的项目搭建
首先创建springboot项目,相关博客有详细的创建教程,下方仅本人推荐示例(视频中也有相关项目创建教程):
IDEA创建项目教程 :https://www.jianshu.com/p/40422d484475
eclipse创建项目教程 :https://blog.csdn.net/qq_35170365/article/details/80688484
项目搭建完成后,配置application.properties,配置如下,端口号只要不和本机当前口号冲突即可,本人用的是8001
server.port=8001
spring.thymeleaf.cache=false
创建thymeleaf网页模板,相关代码如下:
DOCTYPE html>
<html lang="ch" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Titletitle>
head>
<body>
body>
html>
2、第一个程序
项目结构如图:
第一个程序(基本使用),实现前端标题的数据渲染,先上代码:
后台 创建包controller以及类IndexController:
package com.thym.thymdemo.controller; import com.thym.thymdemo.view.User; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; /** * @author June * @date 2021/12/25 15:35 */ @Controller public class IndexController { @GetMapping("/index") public String index(Model model){ model.addAttribute("title","传递的title"); model.addAttribute("keywords","传递的keywords"); model.addAttribute("description","传递的description"); return "index"; } }
前端创建html网页,index.html,代码如下:
DOCTYPE html>
<html lang="ch" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title th:text="|localhost-${title}|">默认的Titletitle>
<meta th:content="${description}" name="description" content="默认的description">
<meta th:content="${keywords}" name="keywords" content="默认的keywords">
head>
<body>
body>
html>
结果实现如下:
3、常用方法
实现后台数据的前端实现,有关对象与类的数据传递:
后台 创建实体类 User.java,代码如下:
package com.thym.thymdemo.view; import lombok.Data; import java.util.Date; import java.util.List; /** * @author June * @date 2021/12/25 15:46 */ @Data public class User {
//其中lombok插件可实现创建get、set方法,所以此处并未创建get、set方法 private String username; private Integer age; private Integer sex; private Boolean isVip; private Date createTime; private Listtags; }
IndexController.java 有关代码修改如下;
package com.thym.thymdemo.controller; import com.thym.thymdemo.view.User; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; /** * @author June * @date 2021/12/25 15:35 */ @Controller public class IndexController { @GetMapping("/index") public String index(Model model){ model.addAttribute("title","传递的title"); model.addAttribute("keywords","传递的keywords"); model.addAttribute("description","传递的description"); return "index"; } @GetMapping("/basic") public String basic(Model model){//此处即为javaweb项目中的前后端传值行为 User user = new User(); user.setUsername("lookroot"); user.setAge(32); user.setSex(1); user.setIsVip(false); user.setCreateTime(new Date()); user.setTags(Arrays.asList("PHP","Java")); model.addAttribute("user",user); return "basic"; } }
前端创建html页面,basic.html 代码如下;
DOCTYPE html>
<html lang="ch" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Titletitle>
head>
<body>
<div th:object="${user}">
<h2 th:text="*{username}">h2>
<h2 th:text="*{age}">h2>
<h2 th:text="*{sex}">h2>
<h2 th:text="*{isVip}">h2>
<h2 th:if="*{isVip}">会员h2>
<h2 th:text="*{createTime}">h2>
<h2 th:text="*{tags}">h2>
div>
<p th:text="${#dates.format(user.createTime,'yyyy-MM-dd HH:mm')}">p>
<ul>
<li th:each="tag:${user.tags}" th:text="${tag}">li>
ul>
<div th:switch="${user.sex}">
<p th:case="1">男p>
<p th:case="2">女p>
<p th:case="*">默认p>
div>
<div th:replace="~{component::com1}">div>
<div th:insert="~{component::com1}">div>
<div th:insert="~{component::#com2}">div>
<div th:insert="~{component::com3('传递的数据')}">div>
<div th:insert="~{component::com4(~{::#message})}">
<p id="message">替换的模块p>
div>
body>
html>
实现结果如下;
4、thymeleaf中JavaScript、css的应用
thymeleaf+css,首先在src\main\resources\static目录下,创建css文件,写入如下代码:
.app{ height: 300px; width: 300px; background-color: blue; }
前端basic页面中代码添加如下(由于所引用的css文件在根目录下,所以可以直接引用):
<div class="app">div>
显示效果如下:
在html页面内部直接写入css有关代码
前端添加代码如下:
<ul> <li th:each="tag,stat:${user.tags}" th:text="${tag}" th:classappend="${stat.last}?active">li> ul>
结果显示如下:
5、thymeleaf中组件的使用
创建component.html页面,写入如下代码:
DOCTYPE html>
<html lang="ch" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Titletitle>
head>
<body>
<footer th:fragment="com1">
<h2 th:text="${user.username}">h2>
com1
footer>
<div id="com2">
com2
div>
<div th:fragment="com3(message)">
<p th:text="${message}">p>
div>
<div th:fragment="com4(message)">
<p th:replace="${message}">p>
div>
body>
html>
前端页面basic页面代码修改如下;
DOCTYPE html>
<html lang="ch" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Titletitle>
<link rel="stylesheet" th:href="@{app.css}">
<style>
.active{
color: red;
}
style>
head>
<body>
<p th:text="${#dates.format(user.createTime,'yyyy-MM-dd HH:mm')}">p>
<ul>
<li th:each="tag:${user.tags}" th:text="${tag}">li>
ul>
<ul>
<li th:each="tag,stat:${user.tags}" th:text="${tag}"
th:classappend="${stat.last}?active">li>
ul>
<div th:replace="~{component::com1}">div>
<div th:insert="~{component::com1}">div>
<div th:insert="~{component::#com2}">div>
<div th:insert="~{component::com3('传递的数据')}">div>
<div th:insert="~{component::com4(~{::#message})}">
<p id="message">替换的模块p>
div>
body>
<script th:inline="javascript">
const user = /*[[${user}]]*/{}
console.log(user)
script>
html>
实现结果如下: