Thymeleaf基本知识

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Thymeleaf是个XML/XHTML/HTML5模板引擎,可以用于Web与非Web应用。

Thymeleaf的主要目标在于提供一种可被浏览器正确显示的、格式良好的模板创建方式,因此也可以用作静态建模。你可以使用它创建经过验证的XML与HTML模板。相对于编写逻辑或代码,开发者只需将标签属性添加到模板中即可。接下来,这些标签属性就会在DOM(文档对象模型)上执行预先制定好的逻辑。Thymeleaf的可扩展性也非常棒。你可以使用它定义自己的模板属性集合,这样就可以计算自定义表达式并使用自定义逻辑。这意味着Thymeleaf还可以作为模板引擎框架。

Thymeleaf的模板还可以用作工作原型,Thymeleaf会在运行期替换掉静态值。例如下面的html文件,当作为静态文件时,product name显示为Red Chair,当运行在容器中并提供product这个对象时,product name的值会自动替换为product.description对应的值。

1.bean值替换
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 2</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Answer for exercise 1: bean values</h1>10         <h2>Product information</h2>11         <dl>12             <dt>Product name</dt>13             <dd th:text="${product.description}">Red Chair</dd>14 15             <dt>Product price</dt>16             <dd th:text="${product.price}">350</dd>17 18             <dt>Product available from</dt>19             <dd th:text="${product.availableFrom}">2014-12-01</dd>20         </dl>21     </body>22 </html>
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2.简单数据转换(数字,日期)
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 2</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Answer for exercise 2: bean values</h1>10         <h2>Product information</h2>11         <dl>12             <dt>Product name</dt>13             <dd th:text="${product.description}">red Chair</dd>14 15             <dt>Product price</dt>16             <dd th:text="${#numbers.formatDecimal(product.price, 1, 2)}">180</dd>17 18             <dt>Product available from</dt>19             <dd th:text="${#dates.format(product.availableFrom, 'yyyy-MM-dd')}">2014-12-01</dd>20         </dl>21     </body>22 </html>
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3.字符串拼接
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 3</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Answer for exercise 3: string concatenation</h1>10         <h2>Product information</h2>11         <dl>12             <dt>Product price</dt>13             <dd th:text="${'$'+product.price}">235</dd>14         </dl>15     </body>16 </html>
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4.国际化
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title th:text="#{tutorial.exercise4}">Thymeleaf tutorial: exercise 4</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1 th:text="#{tutorial.exercise4}">Thymeleaf tutorial - Solution for exercise 4: internationalization</h1>10         <h2 th:text="#{product.info}">Product information</h2>11         <dl>12             <dt th:text="#{product.name}">Product name</dt>13             <dd th:text="${product.description}">Red chair</dd>14 15             <dt th:text="#{product.price}">Product price</dt>16             <dd th:text="${#numbers.formatDecimal(product.price, 1, 2)}">350</dd>17 18             <dt th:text="#{product.available}">Product available from</dt>19             <dd th:text="${#dates.format(product.availableFrom, 'dd-MMM-yyyy')}">28-Jun-2013</dd>20         </dl>21     </body>22 </html>
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此时html需要相应的配置文件。例如如下配置文件:

en:

tutorial.exercise4=Thymeleaf tutorial - exercise 4: internationalizationproduct.info=Product informationproduct.name=Product nameproduct.price=Product priceproduct.available=Product available fromback=Back

fr

tutorial.exercise4=Tutorial De Thymeleaf - exercice 4: l'internationalisationproduct.info=Information du produitproduct.name=Nom du produitproduct.price=Prix du produitproduct.available=Produit disponible depuisback=Revenir

5.转义和非转义文本
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 5</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Solution for exercise 5: escaped and unescaped text</h1>10         <div th:text="${html}">11             Some escaped text12         </div>13         <div th:utext="${html}">14             Some unescaped text15         </div>16     </body>17 </html>
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上述两个div分别生成的html代码为

<div>This is an &lt;em&gt;HTML&lt;/em&gt; text. &lt;b&gt;Enjoy yourself!&lt;/b&gt;</div><div>This is an <em>HTML</em> text. <b>Enjoy yourself!</b></div>
6.迭代
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 6</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Answer for exercise 6: iteration</h1>10         <h2>Product list</h2>11         <table>12             <thead>13                 <tr>14                     <th>Description</th>15                     <th>Price</th>16                     <th>Available from</th>17                 </tr>18             </thead>19             <tbody th:remove="all-but-first">20                 <tr th:each="product:${productList}">21                     <td th:text="${product.description}">Red Chair</td>22                     <td th:text="${'$' + #numbers.formatDecimal(product.price, 1, 2)}">$123</td>23                     <td th:text="${#dates.format(product.availableFrom, 'yyyy-MM-dd')}">2014-12-01</td>24                 </tr>25                 <tr>26                     <td>White table</td>27                     <td>$200</td>28                     <td>15-Jul-2013</td>29                 </tr>30                 <tr>31                     <td>Reb table</td>32                     <td>$200</td>33                     <td>15-Jul-2013</td>34                 </tr>35                 <tr>36                     <td>Blue table</td>37                     <td>$200</td>38                     <td>15-Jul-2013</td>39                 </tr>40             </tbody>41         </table>42     </body>43 </html>
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7.迭代统计
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 7</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Solution for exercise 7: iteration stats</h1>10         <h2>Product list</h2>11         <table>12             <thead>13                 <tr>14                     <th>Index</th>15                     <th>Description</th>16                     <th>Price</th>17                     <th>Available from</th>18                 </tr>19             </thead>20             <tbody th:remove="all-but-first">21                 <tr th:each="product : ${productList}">22                     <td th:text="${productStat.count}">1</td>23                     <td th:text="${product.description}">Red chair</td>24                     <td th:text="${'$' + #numbers.formatDecimal(product.price, 1, 2)}">$350</td>25                     <td th:text="${#dates.format(product.availableFrom, 'dd-MMM-yyyy')}">28-Jun-2013</td>26                 </tr>27                 <tr>28                     <td>2</td>29                     <td>White table</td>30                     <td>$200</td>31                     <td>15-Jul-2013</td>32                 </tr>33                 <tr>34                     <td>3</td>35                     <td>Reb table</td>36                     <td>$200</td>37                     <td>15-Jul-2013</td>38                 </tr>39                 <tr>40                     <td>4</td>41                     <td>Blue table</td>42                     <td>$200</td>43                     <td>15-Jul-2013</td>44                 </tr>45             </tbody>46         </table>47     </body>48 </html>
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8.条件判断
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 8</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Answer for exercise 8: conditions</h1>10         <h2>Product list</h2>11         <table>12             <thead>13                 <tr>14                     <th>Description</th>15                     <th>Price</th>16                     <th>Available from</th>17                     <th></th>18                 </tr>19             </thead>20             <tbody>21                 <tr th:each="product : ${productList}">22                     <td th:text="${product.description}">Red chair</td>23                     <td th:text="${'$' + #numbers.formatDecimal(product.price, 1, 2)}">$350</td>24                     <td th:text="${#dates.format(product.availableFrom, 'dd-MMM-yyyy')}">28-Jun-2013</td>25                     <td>26                         <span th:if="${product.price lt 100}" class="offer">Special offer!</span>27                     </td>28                 </tr>29             </tbody>30         </table>31     </body>32 </html>
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9.更多条件判断
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 9</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Answer for exercise 9: more on conditions</h1>10         <h2>Customer list</h2>11         <table>12             <thead>13                 <tr>14                     <th>First name</th>15                     <th>Last name</th>16                     <th>Gender</th>17                     <th>Payment method</th>18                     <th>Balance</th>19                 </tr>20             </thead>21             <tbody th:remove="all-but-first">22                 <tr th:each="customer : ${customerList}">23                     <td th:text="${customer.firstName}">Peter</td>24                     <td th:text="${customer.lastName}">Jackson</td>25                     <!-- 26                        Use th:switch for selecting content based on ${customer.gender}.27                        As genre can be null if unknown, better use ${customer.gender?.name()}28                        for obtaining its name.29                     -->30                     <td th:switch="${customer.gender?.name()}">31                         <img th:case="'MALE'" src="../../../images/male.png" th:src="@{/images/male.png}" alt="Male" /> <!-- Use "/images/male.png" image -->32                         <img th:case="'FEMALE'" src="../../../images/female.png" th:src="@{/images/female.png}" alt="Female" /> <!-- Use "/images/female.png" image -->33                         <span th:case="*">Unknown</span>34                     </td>35                     <td>36                         <span th:text="${customer.paymentMethod.description}">Direct debit</span>37                         <!-- Show next message only when paymentMethod is not CREDIT_CARD -->38                         <span th:unless="${customer.paymentMethod.name() == 'CREDIT_CARD'}" class="warn">39                             Payment must be done in the next 4 days40                         </span>41                     </td>42                     <!-- Add class="enhanced" when balance is greater than 10000 -->43                     <td th:class="${customer.balance gt 10000} ? 'enhanced'" th:text="${customer.balance}">350</td>44                 </tr>45                 <tr>46                     <td>Mary</td>47                     <td>Johanson</td>48                     <td><img src="../../../images/female.png" /></td>49                     <td><span>Credit card</span></td>50                     <td>5000</td>51                 </tr>52                 <tr>53                     <td>Robert</td>54                     <td>Allen</td>55                     <td><img src="../../../images/male.png" /></td>56                     <td>57                         <span>Credit card</span>58                         <span class="warn">Payment must be done in the next 4 days</span>59                     </td>60                     <td class="enhanced">50000</td>61                 </tr>62             </tbody>63         </table>64     </body>65 </html>
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10.Spring表达式语言
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 10</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Solution for exercise 10: Spring Expression language</h1>10   11         <h2>Arithmetic expressions</h2>12         <p class="label">Four multiplied by minus six multiplied by minus two module seven:</p>13         <p class="answer" th:text="${4 * -6 * -2 % 7}">123</p>14  15         <h2>Object navigation</h2>16         <p class="label">Description field of paymentMethod field of the third element of customerList bean:</p>17         <p class="answer" th:text="${customerList[2].paymentMethod.description}">Credit card</p>18  19         <h2>Object instantiation</h2>20         <p class="label">Current time milliseconds:</p>21         <p class="answer" th:text="${new java.util.Date().getTime()}">22-Jun-2013</p>22         23         <h2>T operator</h2>24         <p class="label">Random number:</p>25         <p class="answer" th:text="${T(java.lang.Math).random()}">123456</p>26     </body>27 </html>
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11.超链接
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 11</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Answer for exercise 11: links</h1>10         <h2>Product actions</h2>11         <ul>12             <li><a href="#" th:href="@{/exercise11/product.html(action='view')}">View product</a></li>13             <li><a href="#" th:href="@{/exercise11/product.html(action='edit')}">Edit product</a></li>14         </ul>15     </body>16 </html>
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12.表单
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 1 <!DOCTYPE html> 2 <html xmlns:th="http://www.thymeleaf.org"> 3     <head> 4         <title>Thymeleaf tutorial: exercise 12</title> 5         <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" /> 6         <meta charset="utf-8" /> 7     </head> 8     <body> 9         <h1>Thymeleaf tutorial - Solution for exercise 12: forms</h1>10         <h2>Customer edition</h2>11         <form action="saveCustomer.html" th:action="@{/exercise12/saveCustomer.html}" th:object="${customer}" method="post">12             <input type="hidden" th:field="*{id}" />13             14             <label for="firstName">First name:</label>15             <input type="text" th:field="*{firstName}" value="John" />16             17             <label for="lastName">Last name:</label>18             <input type="text" th:field="*{lastName}" value="Wayne" />19             20             Genre:21             <div th:each="gender : ${genders}" class="radio">22                 <input type="radio" th:value="${gender}" th:field="*{gender}" />23                 <label th:for="${#ids.prev('gender')}" th:text="${gender.description}">Male</label>24             </div>25             <div th:remove="all" class="radio">26                 <input type="radio" />27                 <label>Female</label>28             </div>29             30             <label for="paymentMethod">Payment method:</label>31             <select th:field="*{paymentMethod}" th:remove="all-but-first">32                 <option th:each="paymentMethod : ${paymentMethods}"33                         th:value="${paymentMethod}" th:text="${paymentMethod.description}">Credit card</option>34                 <option>Another payment method</option>35                 <option>Another payment method</option>36             </select>37             38             <label for="balance">Balance (dollars):</label>39             <input type="text" th:field="*{balance}" size="10" value="2500" />40             41             <input type="submit" />42         </form>43     </body>44 </html>
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13.内联
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<!DOCTYPE html><html xmlns:th="http://www.thymeleaf.org">    <head>        <title>Thymeleaf tutorial: exercise 13</title>        <link rel="stylesheet" href="../../../css/main-static.css" th:href="@{/css/main.css}" />        <meta charset="utf-8" />    </head>    <body>        <h1>Thymeleaf tutorial - Solution for exercise 13: inlining</h1>        <h2>Birthday email</h2>        <form action="#" method="post">            <label for="body">Message body:</label><textarea id="body" name="body" th:inline="text">Dear [[${customerName}]],it is our sincere pleasure to congratulate your in your birthday:    Happy birthday [[${customerName}]]!!!See you soon, [[${customerName}]].Regards,    The Thymeleaf team</textarea>            <input type="submit" value="Send mail" />        </form>    </body></html>
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以上资料都来自http://itutorial.thymeleaf.org/。如果对Thymeleaf有兴趣,可以试试他们做的交互教程,很是好用。上面的html代码都是来自thymeleaf的交互教程

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