本章为 Thymeleaf 语法参考，主要介绍如：循环、判断、模板布局、内置对象等。
声明
修改 html 标签用于引入 thymeleaf 引擎，这样才可以在其他标签里使用 th:* 语法。
<!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
使用文本
语法 说明
{home.welcome} 使用国际化文本,国际化传参直接追加 (value…)
${user.name} 使用会话属性
@{} 表达式中使用超链接 <link rel="stylesheet" type="text/css" media="all"href="../../css/gtvg.css" th:href="@{/css/gtvg.css}" />
- -
${} 表达式中基本对象
param 获取请求参数，比如 ${param.name}, http://localhost:8080?name=jeff
session 获取 session 的属性
application 获取 application 的属性
execInfo 有两个属性 templateName 和 now (是 java 的 Calendar 对象)
ctx
vars
locale
httpServletRequest
httpSession
- -
th 扩展标签
th:text 普通字符串
th:utext 转义文本
th:href 链接
th:attr 设置元素属性 <img src="../../images/gtvglogo.png" th:attr="src=@{/images/gtvglogo.png},title=#{logo},alt=#{logo}" />
th:with 定义常量
th:attrappend 追加属性
th:classappend 追加类样式
th:styleappend 追加样式
其他标签
语法 说明
th:abbr
th:accept
th:accept-charset
th:accesskey
th:action
th:align
th:alt
th:archive
th:audio
th:autocomplete
th:axis
th:background
th:bgcolor
th:border
th:cellpadding
th:cellspacing
th:challenge
th:charset
th:cite
th:class
th:classid
th:codebase
th:codetype
th:cols
th:colspan
th:compact
th:content
th:contenteditable
th:contextmenu
th:data
th:datetime
th:dir
th:draggable
th:dropzone
th:enctype
th:for
th:form
th:formaction
th:formenctype
th:formmethod
th:formtarget
th:frame
th:frameborder
th:headers
th:height
th:high
th:href
th:hreflang
th:hspace
th:http-equiv
th:icon
th:id
th:keytype
th:kind
th:label
th:lang
th:list
th:longdesc
th:low
th:manifest
th:marginheight
th:marginwidth
th:max
th:maxlength
th:media
th:method
th:min
th:name
th:optimum
th:pattern
th:placeholder
th:poster
th:preload
th:radiogroup
th:rel
th:rev
th:rows
th:rowspan
th:rules
th:sandbox
th:scheme
th:scope
th:scrolling
th:size
th:sizes
th:span
th:spellcheck
th:src
th:srclang
th:standby
th:start
th:step
th:style
th:summary
th:tabindex
th:target
th:title
th:type
th:usemap
th:value
th:valuetype
th:vspace
th:width
th:wrap
th:xmlbase
th:xmllang
th:xmlspace
th:alt-title
th:lang-xmllang
循环
<tr th:each="prod : ${prods}">
<td th:text="${prod.name}">Onions</td>
<td th:text="${prod.price}">2.41</td>
<td th:text="${prod.inStock}? #{true} : #{false}">yes</td>
</tr>
<table>
<tr>
<th>NAME</th>
<th>PRICE</th>
<th>IN STOCK</th>
</tr>
<tr th:each="prod,iterStat : ${prods}" th:class="${iterStat.odd}? 'odd'">
<td th:text="${prod.name}">Onions</td>
<td th:text="${prod.price}">2.41</td>
<td th:text="${prod.inStock}? #{true} : #{false}">yes</td>
</tr>
</table>
迭代器的状态：
index: 当前的索引，从0开始
count: 当前的索引，从1开始
size：总数
current:
even/odd:
first
last
判断
if
<a href="comments.html" th:href="@{/product/comments(prodId=${prod.id})}" th:if="${not #lists.isEmpty(prod.comments)}">view</a>
unless
<a href="comments.html" th:href="@{/comments(prodId=${prod.id})}" th:unless="${#lists.isEmpty(prod.comments)}">view</a>
switch
<div th:switch="${user.role}">
<p th:case="'admin'">User is an administrator</p> <p th:case="#{roles.manager}">User is a manager</p>
</div>
<div th:switch="${user.role}">
<p th:case="'admin'">User is an administrator</p> <p th:case="#{roles.manager}">User is a manager</p> <p th:case="*">User is some other thing</p>
</div>
th:block
<table>
<th:block th:each="user : ${users}">
<tr>
<td th:text="${user.login}">...</td> <td th:text="${user.name}">...</td>
</tr>
<tr>
<td colspan="2" th:text="${user.address}">...</td>
</tr>
</th:block>
</table>
推荐下面写法（编译前看不见）
<table>
<tr>
<td th:text="${user.login}">...</td>
<td th:text="${user.name}">...</td> </tr>
<tr>
<td colspan="2" th:text="${user.address}">...</td>
</tr>
<!--/*/ </th:block> /*/-->
</table>
th:inline 用法
th:inline 可以等于 text , javascript(dart) , none
text: [[…]]
<p th:inline="text">Hello, [[#{test}]]</p>
javascript: /[[…]]/
<script th:inline="javascript">
var username = /*[[
#{test}
]]*/;
var name = /*[[
${param.name[0]}+${execInfo.templateName}+'-'+${#dates.createNow()}+'-'+${#locale}
]]*/;
</script>
<script th:inline="javascript">
/*<![CDATA[*/
var username = [[#{test}]];
var name = [[${param.name[0]}+${execInfo.templateName}+'-'+${#dates.createNow()}+'-'+${#locale}]];
/*]]>*/
</script>
adding code: /* [+…+]*/
var x = 23;
/*[+
var msg = 'Hello, ' + [[${session.user.name}]]; +]*/
var f = function() {
...
removind code: /[- / and /* -]*/
var x = 23;
/*[- */
var msg = 'This is a non-working template'; /* -]*/
var f = function() {
...