1. The first is the use of thmeleaf

• th: attr set property value
• https://blog.csdn.net/sun_jy2011/article/details/40215423
• Some uses of th tag
• https://segmentfault.com/a/1190000009903821

• Th: if th: text th: value th: selected, etc

  <a href="register.html" title="" th:unless="${session.user} ne null" >Register</a>
  
                           <a href="login.html" th:unless="${session.name} ne null"  title="">Sign in</a>
                            <a th:href="@{/logout}" th:if="${session.user}"  title="">Log out</a>
                            <span th:if="${session.user}">
  
                              <a th:href="@{/{id}/info(id=${session.user.id})}"  >Info</a>
                            </span>>
  
                             <a th:href="@{/admin_login.html}" th:unless="${session.user} ne null"  title="">Backstage</a>
  
                             <a th:href="@{/admin_index.html}" th:if="${session.user} ne null"  title="">Backstage</a>
                            <a th:href="@{/login}" th:if="${session.user} " title="" th:text="'Welcome'+ ${session.name} + '!'">Log out</a>

• thymeleaf dropdown echo selected

  <option value="Other"   th:selected="${CloudDilatationDto.resource == 'Other'}">Other</option>

1. Loop iteration of thymelaf

   <ul class="layui-nav layui-nav-tree" lay-filter="side-main" >
              <li class="layui-nav-item" th:each="menu: ${list}">
                   <a href="javascript:;" th:text="${menu.text}"> <i class="layui-icon">&#Xe620; < / I > Foundation</a>
                   <dl class="layui-nav-child">
                   <dd th:each="record:${menu.childmenus}">
                  <!--  th:href="@{${record.href}}" -->
                  <!--  <span th:text="${record.href}" class="change"></span> -->
                   <a th:href="@{${record.href}}" > 
                   <i class="layui-icon" ></i>
                   <span th:text="${record.ctext}"></span>
                   </a>
   
                   </dd>
                   <!-- <dd><a href="javascript:;" href-url="login.jsp"><i class="layui-icon">&#Xe621; login page
   
                   </dl>
               </li>
           </ul>

The installation of 3thymeleaf is very simple to import maven and configure in the application. Configuration file

spring.thymeleaf.mode=LEGACYHTML5
spring.thymeleaf.cache=false
spring.thymeleaf.prefix=/WEB-INF/
spring.thymeleaf.suffix=.html

maven file

<! -- thymeleaf template engine, accessing static resources -- >
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<! -- this package was introduced to make spring.thymeleaf.mode=LEGACYHTML5 in application. Properties effective,
This is to solve the problem that the template engine of thymeleaf is too strict in HTML verification -- >
<dependency>
<groupId>net.sourceforge.nekohtml</groupId>
<artifactId>nekohtml</artifactId>
</dependency>

4 Summary

Tymeleaf is a good template, which is similar to JSP freemaker but different from the template tag recommended by springboot.

Differences:
https://blog.csdn.net/qq_33314107/article/details/80834894