Thymeleaf模板
关于Thymeleaf的优点:它就是html页面。
1.相关pom依赖配置:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
Springboot官方文档建议在开发是将缓存关闭,就在application.properties文件中加入以下代码:
spring.thymeleaf.cache=false
注:正式环境还是要将缓存开启的
对应后台代码:
package com.wang.springboot01.Entity;
import lombok.Data;
/**
* @author wang
* @site https://blog.youkuaiyun.com/qq_45432593
* @create 2020-11-27 16:09
*/
@Data
public class User {
private Integer uid;
private String uname;
private String pwd;
public User() {
}
public User(Integer uid, String uname, String pwd) {
this.uid = uid;
this.uname = uname;
this.pwd = pwd;
}
}
package com.wang.springboot01.Controller;
import com.wang.springboot01.Entity.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.List;
/**
* @author wang
* @site https://blog.youkuaiyun.com/qq_45432593
* @create 2020-11-27 16:10
*/
@Controller
@RequestMapping("/thymeleaf")
public class UserController {
@RequestMapping("/list")
public String hello(HttpServletRequest request){
/**
* 1.获取单个值
* 2.能够在html页面进行遍历展示
* 3.如何在html页面转义html代码块
*/
request.setAttribute("msg","传单个字符串");
List<User> userList=new ArrayList<>();
userList.add(new User(1,"zs","123"));
userList.add(new User(2,"ls","234"));
userList.add(new User(3,"ww","678"));
request.setAttribute("userList",userList);
request.setAttribute("htmlStr","<span style='color:red'></span>");
return "list";
}
}
前台Html页面
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>thymeleaf模板介绍</title>
</head>
<body>
<div th:text="${msg}"></div>
<div th:utext="${htmlStr}"></div>
<table width="60%" border="1">
<tr>
<td>id</td>
<td>用户名</td>
<td>密码</td>
</tr>
<tr th:each="u : ${userList}">
<td th:text="${u.uid}"></td>
<td th:text="${u.uname}"></td>
<td th:text="${u.pwd}"></td>
</tr>
</table>
</body>
</html>
效果图展示:
Freemarker模板
FreeMarker 是一款 模板引擎: 即一种基于模板和要改变的数据, 并用来生成输出文本(HTML网页,电子邮件,配置文件,源代码等)的通用工具。 它不是面向最终用户的,而是一个Java类库,是一款程序员可以嵌入他们所开发产品的组件。
1.导入pom依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
2.application.yml文件的默认配置
spring:
thymeleaf:
cache: false
freemarker:
# 设置模板后缀名
suffix: .ftl
# 设置文档类型
content-type: text/html
# 设置页面编码格式
charset: UTF-8
# 设置页面缓存
cache: false
# 设置ftl文件路径,默认是/templates,为演示效果添加role
template-loader-path: classpath:/templates/role
mvc:
static-path-pattern: /static/**
3.前台html界面
<h2>取值</h2>
<h3>提供默认值</h3>
welcome 【${name!'未知'}】 to freemarker!
<h3>exists用在逻辑判断</h3>
<#if name?exists>
${name}
</#if>
<h2>条件</h2>
<#if sex=='girl'>
女
<#elseif sex=='boy'>
男
<#else>
</#if>
<h2>循环</h2>
<table border="1px" width="600px">
<thead>
<tr>
<td>ID</td>
<td>角色名</td>
<td>描述</td>
</tr>
</thead>
<tbody>
<#list roles as role>
<tr>
<td>${role.rid}</td>
<td>${role.roleName}</td>
<td>${role.desc}</td>
</tr>
</#list>
</tbody>
</table>
<h2>include</h2>
<#include 'foot.ftl'>
<h2>局部变量(assign)/全局变量(global)</h2>
<#assign ctx1>
${springMacroRequestContext.contextPath}
</#assign>
<#global ctx2>
${springMacroRequestContext.contextPath}
</#global>
${ctx1}和${ctx2}
底部页面
<a href="login.ftl">返回登录1</a>
<a href="${ctx}/toLogin">返回登录2</a>
common
<#assign ctx>
${springMacroRequestContext.contextPath}
</#assign>
<base href="${ctx}/">
login界面
欢迎来到登录界面
4,后台相关代码(controler)
@RequestMapping("/role/list")
public ModelAndView roleList(){
ModelAndView mav = new ModelAndView();
mav.setViewName("/list");
mav.addObject("name",null);
mav.addObject("sex","gay");
List list = new ArrayList();
list.add(new Role(1,"老师","教书育人"));
list.add(new Role(2,"学生","知识改变命运"));
mav.addObject("roles",list);
return mav;
}
@RequestMapping("toLogin")
public String toLogin(){
return "login";
}
5.效果图展示
注:freemarker模板也可以像jsp那样设置根路径