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https://saas.51cto.com/learner.html#/ 手机企业yw-syw51saascto.com/
https://www.cnblogs.com/xinxihua/p/14552132.html 前端05vscode+Vue 引入 ECharts
https://www.cnblogs.com/xinxihua/p/14552105.html 前端04测试一个的项目
https://www.cnblogs.com/xinxihua/p/14551901.html 前端3vue+mysql连接实例
https://www.cnblogs.com/xinxihua/p/14551802.html 前端01前端模块化IIFE，commonjs，AMD，UMD，ES6 Module规范超详细讲解
https://www.cnblogs.com/xinxihua/p/14551691.html 前端02vue+vscode+nodejs webpack开发环境搭建
https://www.cnblogs.com/xiayizhan/p/8707127.html SpringBoot-thymeleaf模板集成
https://git-scm.com/download/gui/windows
https://desktop.github.com/
VSCode-SpringBoot与ECharts前后端分离图表绘制+Vue.js图片懒加载路径二次刷新过程演示
https://www.bilibili.com/video/av458169809/
VSCode-SpringBoot与ECharts前后端分离图表绘制+Vue.js图片懒加载路径二次刷新过程演示
SpringBoot-thymeleaf模板集成
https://github.com/BraveWangDev/SpringBoot
https://github.com/BraveWangDev/SpringBoot
SpringBoot,SpringData 接下来要写SpringSecurity安全控制(权限管理)了.
SpringSecurity要涉及登陆页面,首页等页面跳转,故先说一下SpringBoot推荐模板thymeleaf的集成
这部分简单的说一下集成,和语法,以免SpringSecurityDemo中出现thymeleaf不好理解
本节代码根据SpringBoot初始化项目 : Maven构建SpringBoot项目 为基础
1,pom.xml添加thymeleaf依赖
<dependencies>
<!-- 核心模块，包括自动配置支持、日志和YAML -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!-- 测试模块，包括JUnit、Hamcrest、Mockito -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 引入Web模块 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- thymeleaf模板引擎 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
2,工程目录结构
resources/templates为thymeleaf模板默认路径,当然也可以自定义路径
java/com.example/web/HelloController.java为Controller类,控制地址跳转到hello.html
application.properties-thymeleaf模板配置项
########################################################
###THYMELEAF (ThymeleafAutoConfiguration)
########################################################
## 前缀prefix
#spring.thymeleaf.prefix=classpath:templates/
## 后缀suffix
#spring.thymeleaf.suffix=.html
## 类型mode
#spring.thymeleaf.mode=HTML5
## charset=<encoding> is added
#spring.thymeleaf.encoding=UTF-8
##content-type
#spring.thymeleaf.content-type=text/html
# set to false for hot refresh
#spring.thymeleaf.cache=false
一般情况下,不需要进行配置,使用SpringBoot默认配置即可
主要说一下spring.thymeleaf.cache这个配置项
由于浏览器会有页面缓存,在开发过程中,建议开发者不启用cache
4,Controller
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
//import org.springframework.web.bind.annotation.RestController;
/**
* Created by Brave on 16/10/9. *
* 注意:
* 这里要使用@Controller注解
* 而不要使用@RestController
* 否则return "hello";不能跳转到hello.html
*/
@Controller
public class HelloController {
@ResponseBody
@RequestMapping("/hello")
public String hello() {
return "Hello World";
}
@RequestMapping("/")
public String index(ModelMap map) {
map.addAttribute("hello", "hello Thymeleaf!");
return "hello";
}
}
这里需要注意一个问题,可能会影响到页面的正常跳转
如果遇到后边不能正常跳转到hello.html页面,请查看 : @Controller和@RestController的区别
5,hello.html
在thymeleaf模板目录下创建hello.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
<title>Hello World!</title>
</head>
<body>
<h1 th:inline="text">thymeleaf Test</h1>
<p th:text="${hello}"></p>
</body>
</html>
关于模板中的
等语法,我们会在下节简单列出作为开发中的参考
目前只要理解这是一个传值操作就可以了 ^_^
6,测试项目
启动服务,浏览器访问http://localhost:8080/
如图,可以看到正常跳转hello.html并携带参数显示
至此SpringBoot-thymeleaf模板集成完成
7,代码下载
CSDN下载
GitHub下载
————————————————
版权声明：本文为CSDN博主「BraveWangDev」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/ABAP_Brave/article/details/53005794
thymeleaf模板语法 SpringSecurity用到的语法
关于SpringBoot-thymeleaf模板集成,请跳转 : SpringBoot-thymeleaf模板集成
________________________________________
先说句有用的废话:
thymeleaf模板语法,都以th属性开头,如:
<span th:text="...">
________________________________________
一,thymeleaf-简单表达式
1.变量表达式
2.选择或星号表达式
3.文字国际化表达式
4.URL表达式
1,变量表达式
Thymeleaf模板引擎在进行模板渲染时，还会附带一个Context存放进行模板渲染的变量，在模板中定义的表达式本质上就是从Context中获取对应的变量的值
<p>Today is: <span th:text="${day}">2 November 2016</span>.</p>
假设day的值为2016年11月2日，那么渲染结果为：<p>Today is: 2016年11月2日.</p>。
注意 : 渲染后,模板中span值2 November 2016将被覆盖
2,选择(星号)表达式
可以简单理解为内层是对外层对象的引用
<div th:object="${session.user}">
<p>Name: <span th:text="*{firstName}">Sebastian</span>.</p>
<p>Surname: <span th:text="*{lastName}">Pepper</span>.</p>
<p>Nationality: <span th:text="*{nationality}">Saturn</span>.</p>
</div>
等同于以下方式:
<div>
<p>Name: <span th:text="${session.user.firstName}">Sebastian</span>.</p>
<p>Surname: <span th:text="${session.user.lastName}">Pepper</span>.</p>
<p>Nationality: <span th:text="${session.user.nationality}">Saturn</span>.</p>
</div>
也可以混用,如下:
<div th:object="${session.user}">
<p>Name: <span th:text="*{firstName}">Sebastian</span>.</p>
<p>Surname: <span th:text="${session.user.lastName}">Pepper</span>.</p>
<p>Nationality: <span th:text="*{nationality}">Saturn</span>.</p>
</div>
如何没有与th:object结合使用，*{}与${}效果一样，因为其范围自动扩展到context。
3,URL表达式
URL表达式指的是把一个有用的上下文或会话信息添加到URL，这个过程经常被叫做URL重写。
Thymeleaf对于URL的处理是通过语法@{…}来处理的
<!— 绝对路径 —>
<!-- Will produce 'http://localhost:8080/gtvg/order/details?orderId=3' (plus rewriting) -->
<a href="details.html" th:href="@{http://localhost:8080/gtvg/order/details(orderId=${o.id})}">view</a>
<!— 相对路径 带参数—>
<!-- Will produce '/gtvg/order/details?orderId=3' (plus rewriting) -->
<a href="details.html" th:href="@{/order/details(orderId=${o.id})}">view</a>
<!-- Will produce '/gtvg/order/3/details' (plus rewriting) -->
<a href="details.html" th:href="@{/order/{orderId}/details(orderId=${o.id})}">view</a>
Thymeleaf支持相对路径和绝对路径
(orderId=${o.id})表示将括号内的内容作为URL参数处理
@{...}表达式中可以通过{orderId}访问Context中的orderId变量
@{/order}是Context相关的相对路径，在渲染时会自动添加上当前Web应用的Context名字，假设context名字为app，那么结果应该是/app/order
4,文字国际化表达式
文字国际化表达式允许我们从一个外部文件获取区域文字信息(.properties)
使用Key-Value方式，还可以提供一组参数(可选).
.properties
#{main.title}
#{message.entrycreated(${entryId})}
模板引用:
<table>
<th th:text="#{header.address.city}">...</th>
<th th:text="#{header.address.country}">...</th>
</table>
________________________________________
二.thymeleaf-字面值
1.文本文字：’one text’, ‘Another one!’,…
2.文字数量：0, 34, 3.0, 12.3,…
3.布尔型常量：true, false
4.空的文字：null
5.文字标记：one, sometext, main,…
________________________________________
三：thymeleaf-文本处理
1.字符串拼接：+
<span th:text="'Welcome to our application, ' + ${user.name} + '!'">
2.文字替换：|The name is ${name}|
<span th:text="|Welcome to our application, ${user.name}!|">
相比以上两种方式都可以实现字符串合并,但是,|…|中只能包含变量表达式${…}，不能包含其他常量、条件表达式等。
________________________________________
四.表达基本对象
1.#ctx:上下文对象
2.#vars:上下文变量
3.#locale:上下文语言环境
4.#httpServletRequest:(只有在Web上下文)HttpServletRequest对象
5.#httpSession:(只有在Web上下文)HttpSession对象。
例如:
<span th:text="${#locale.country}">US</span>.
th:text="${#calendars.format(today,'dd MMMM yyyy')}"
________________________________________
五,表达式预处理
表达式预处理，它被定义在_之间：
#{selection.__${sel.code}__}
${sel.code}将先被执行，结果(假如是AAA)将被看做表达式的一部分被执行
结果#{为selection.AAA}。
________________________________________
六,thymeleaf运算符
在表达式中可以使用各类算术运算符，例如+, -, *, /, %
th:with="isEven=(${prodStat.count} % 2 == 0)"
逻辑运算符>, <, <=,>=，==,!=都可以使用
需要注意的是使用 > ,<, >=, <=时需要用它的HTML转义符(> gt; < lt; >= ge; gte; <= le; lte; == eq; != ne; neq;)
th:if="${prodStat.count} > 1"
th:text="'Execution mode is ' + ( (${execMode} == 'dev')? 'Development' : 'Production')"
布尔运算符 and,or
________________________________________
七,thymeleaf循环
数据集合必须是可以遍历的，使用th:each标签：
<body>
<h1>Product list</h1>
<table>
<tr>
<th>NAME</th>
<th>PRICE</th>
<th>IN STOCK</th>
</tr>
<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>
<p>
<a href="../home.html" th:href="@{/}">Return to home</a>
</p>
</body>
被循环渲染的元素<tr>中加入th:each标签
th:each="prod : ${prods}"对集合变量prods进行遍历，对象prod在循环体中可通过表达式访问
________________________________________
八,thymeleaf条件求值
1,If/Unless
Thymeleaf中使用th:if和th:unless属性进行条件判断
设置标签只有在th:if中条件成立时才显示:
<a th:href="@{/login}" th:unless=${session.user != null}>Login</a>
th:unless与th:if相反，表达式条件不成立时显示内容。
2,Switch
多路选择Switch结构,默认属性default,用*表示
<div th:switch="${user.role}">
<p th:case="'admin'">User is an administrator</p>
<p th:case="#{roles.manager}">User is a manager</p>
<p th:case="*">User is some other thing</p>
</div>
3.If-then-else: (if)?(then):else 三元运算符
三元运算控制class属性选择
<tr th:class="${row.even}? 'even' : 'odd'">
三元运算嵌套
<tr th:class="${row.even}? (${row.first}? 'first' : 'even') : 'odd'">
还可以省略else部分，当表达式结果为false，返回null，否则返回’alt’
<tr th:class="${row.even}? 'alt'">
...
</tr>
4.If-then: (if) ? (then) ,省略了else部分，如果条件不成立，返回null
如果第一个表达式的计算结果为null，则取第二个表达式的结果
<div th:object="${session.user}">
<p>Age: <span th:text="*{age}?: '(no age specified)'">27</span>.</p>
</div>
等效于：
<p>Age: <span th:text="*{age != null}? *{age} : '(no age specified)'">27</span>.</p>
条件表达式嵌套：
<p>Name: <span th:text="*{firstName} ?: (*{admin} ? 'Admin' : #{default.username})">Sebastian</span>.</p>
________________________________________
九,Thymeleaf-Utilities
Thymeleaf提供了套Utility对象,内置于Context中,可通过#直接访问：
- #dates: java.util的实用方法。对象:日期格式、组件提取等.
- #calendars: 类似于#日期,但对于java.util。日历对象
- #numbers: 格式化数字对象的实用方法。
- #strings:字符串对象的实用方法:包含startsWith,将/附加等。
- #objects: 实用方法的对象。
- #bools: 布尔评价的实用方法。
- #arrays: 数组的实用方法。
- #lists: list集合。
- #sets:set集合。
- #maps: map集合。
- #aggregates: 实用程序方法用于创建聚集在数组或集合.
- #messages: 实用程序方法获取外部信息内部变量表达式,以同样的方式,因为他们将获得使用# {…}语法
- #ids: 实用程序方法来处理可能重复的id属性(例如,由于迭代)。
Dates
#dates : utility methods for java.util.Date objects:
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Dates
* ======================================================================
*/
/*
* Null-safe toString()
*/
${#strings.toString(obj)} // also array*, list* and set*
/*
* Format date with the standard locale format
* Also works with arrays, lists or sets
*/
${#dates.format(date)}
${#dates.arrayFormat(datesArray)}
${#dates.listFormat(datesList)}
${#dates.setFormat(datesSet)}
/*
* Format date with the specified pattern
* Also works with arrays, lists or sets
*/
${#dates.format(date, 'dd/MMM/yyyy HH:mm')}
${#dates.arrayFormat(datesArray, 'dd/MMM/yyyy HH:mm')}
${#dates.listFormat(datesList, 'dd/MMM/yyyy HH:mm')}
${#dates.setFormat(datesSet, 'dd/MMM/yyyy HH:mm')}
/*
* Obtain date properties
* Also works with arrays, lists or sets
*/
${#dates.day(date)} // also arrayDay(...), listDay(...), etc.
${#dates.month(date)} // also arrayMonth(...), listMonth(...), etc.
${#dates.monthName(date)} // also arrayMonthName(...), listMonthName(...), etc.
${#dates.monthNameShort(date)} // also arrayMonthNameShort(...), listMonthNameShort(...), etc.
${#dates.year(date)} // also arrayYear(...), listYear(...), etc.
${#dates.dayOfWeek(date)} // also arrayDayOfWeek(...), listDayOfWeek(...), etc.
${#dates.dayOfWeekName(date)} // also arrayDayOfWeekName(...), listDayOfWeekName(...), etc.
${#dates.dayOfWeekNameShort(date)} // also arrayDayOfWeekNameShort(...), listDayOfWeekNameShort(...), etc.
${#dates.hour(date)} // also arrayHour(...), listHour(...), etc.
${#dates.minute(date)} // also arrayMinute(...), listMinute(...), etc.
${#dates.second(date)} // also arraySecond(...), listSecond(...), etc.
${#dates.millisecond(date)} // also arrayMillisecond(...), listMillisecond(...), etc.
/*
* Create date (java.util.Date) objects from its components
*/
${#dates.create(year,month,day)}
${#dates.create(year,month,day,hour,minute)}
${#dates.create(year,month,day,hour,minute,second)}
${#dates.create(year,month,day,hour,minute,second,millisecond)}
/*
* Create a date (java.util.Date) object for the current date and time
*/
${#dates.createNow()}
/*
* Create a date (java.util.Date) object for the current date (time set to 00:00)
*/
${#dates.createToday()}
Calendars
#calendars : analogous to #dates, but for java.util.Calendar objects:
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Calendars
* ======================================================================
*/
/*
* Format calendar with the standard locale format
* Also works with arrays, lists or sets
*/
${#calendars.format(cal)}
${#calendars.arrayFormat(calArray)}
${#calendars.listFormat(calList)}
${#calendars.setFormat(calSet)}
/*
* Format calendar with the specified pattern
* Also works with arrays, lists or sets
*/
${#calendars.format(cal, 'dd/MMM/yyyy HH:mm')}
${#calendars.arrayFormat(calArray, 'dd/MMM/yyyy HH:mm')}
${#calendars.listFormat(calList, 'dd/MMM/yyyy HH:mm')}
${#calendars.setFormat(calSet, 'dd/MMM/yyyy HH:mm')}
/*
* Obtain calendar properties
* Also works with arrays, lists or sets
*/
${#calendars.day(date)} // also arrayDay(...), listDay(...), etc.
${#calendars.month(date)} // also arrayMonth(...), listMonth(...), etc.
${#calendars.monthName(date)} // also arrayMonthName(...), listMonthName(...), etc.
${#calendars.monthNameShort(date)} // also arrayMonthNameShort(...), listMonthNameShort(...), etc.
${#calendars.year(date)} // also arrayYear(...), listYear(...), etc.
${#calendars.dayOfWeek(date)} // also arrayDayOfWeek(...), listDayOfWeek(...), etc.
${#calendars.dayOfWeekName(date)} // also arrayDayOfWeekName(...), listDayOfWeekName(...), etc.
${#calendars.dayOfWeekNameShort(date)} // also arrayDayOfWeekNameShort(...), listDayOfWeekNameShort(...), etc.
${#calendars.hour(date)} // also arrayHour(...), listHour(...), etc.
${#calendars.minute(date)} // also arrayMinute(...), listMinute(...), etc.
${#calendars.second(date)} // also arraySecond(...), listSecond(...), etc.
${#calendars.millisecond(date)} // also arrayMillisecond(...), listMillisecond(...), etc.
/*
* Create calendar (java.util.Calendar) objects from its components
*/
${#calendars.create(year,month,day)}
${#calendars.create(year,month,day,hour,minute)}
${#calendars.create(year,month,day,hour,minute,second)}
${#calendars.create(year,month,day,hour,minute,second,millisecond)}
/*
* Create a calendar (java.util.Calendar) object for the current date and time
*/
${#calendars.createNow()}
/*
* Create a calendar (java.util.Calendar) object for the current date (time set to 00:00)
*/
${#calendars.createToday()}
Numbers
#numbers : utility methods for number objects:
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Numbers
* ======================================================================
*/
/*
* ==========================
* Formatting integer numbers
* ==========================
*/
/*
* Set minimum integer digits.
* Also works with arrays, lists or sets
*/
${#numbers.formatInteger(num,3)}
${#numbers.arrayFormatInteger(numArray,3)}
${#numbers.listFormatInteger(numList,3)}
${#numbers.setFormatInteger(numSet,3)}
/*
* Set minimum integer digits and thousands separator:
* 'POINT', 'COMMA', 'NONE' or 'DEFAULT' (by locale).
* Also works with arrays, lists or sets
*/
${#numbers.formatInteger(num,3,'POINT')}
${#numbers.arrayFormatInteger(numArray,3,'POINT')}
${#numbers.listFormatInteger(numList,3,'POINT')}
${#numbers.setFormatInteger(numSet,3,'POINT')}
/*
* ==========================
* Formatting decimal numbers
* ==========================
*/
/*
* Set minimum integer digits and (exact) decimal digits.
* Also works with arrays, lists or sets
*/
${#numbers.formatDecimal(num,3,2)}
${#numbers.arrayFormatDecimal(numArray,3,2)}
${#numbers.listFormatDecimal(numList,3,2)}
${#numbers.setFormatDecimal(numSet,3,2)}
/*
* Set minimum integer digits and (exact) decimal digits, and also decimal separator.
* Also works with arrays, lists or sets
*/
${#numbers.formatDecimal(num,3,2,'COMMA')}
${#numbers.arrayFormatDecimal(numArray,3,2,'COMMA')}
${#numbers.listFormatDecimal(numList,3,2,'COMMA')}
${#numbers.setFormatDecimal(numSet,3,2,'COMMA')}
/*
* Set minimum integer digits and (exact) decimal digits, and also thousands and
* decimal separator.
* Also works with arrays, lists or sets
*/
${#numbers.formatDecimal(num,3,'POINT',2,'COMMA')}
${#numbers.arrayFormatDecimal(numArray,3,'POINT',2,'COMMA')}
${#numbers.listFormatDecimal(numList,3,'POINT',2,'COMMA')}
${#numbers.setFormatDecimal(numSet,3,'POINT',2,'COMMA')}
/*
* ==========================
* Utility methods
* ==========================
*/
/*
* Create a sequence (array) of integer numbers going
* from x to y
*/
${#numbers.sequence(from,to)}
${#numbers.sequence(from,to,step)}
Strings
#strings : utility methods for String objects:
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Strings
* ======================================================================
*/
/*
* Check whether a String is empty (or null). Performs a trim() operation before check
* Also works with arrays, lists or sets
*/
${#strings.isEmpty(name)}
${#strings.arrayIsEmpty(nameArr)}
${#strings.listIsEmpty(nameList)}
${#strings.setIsEmpty(nameSet)}
/*
* Perform an 'isEmpty()' check on a string and return it if false, defaulting to
* another specified string if true.
* Also works with arrays, lists or sets
*/
${#strings.defaultString(text,default)}
${#strings.arrayDefaultString(textArr,default)}
${#strings.listDefaultString(textList,default)}
${#strings.setDefaultString(textSet,default)}
/*
* Check whether a fragment is contained in a String
* Also works with arrays, lists or sets
*/
${#strings.contains(name,'ez')} // also array*, list* and set*
${#strings.containsIgnoreCase(name,'ez')} // also array*, list* and set*
/*
* Check whether a String starts or ends with a fragment
* Also works with arrays, lists or sets
*/
${#strings.startsWith(name,'Don')} // also array*, list* and set*
${#strings.endsWith(name,endingFragment)} // also array*, list* and set*
/*
* Substring-related operations
* Also works with arrays, lists or sets
*/
${#strings.indexOf(name,frag)} // also array*, list* and set*
${#strings.substring(name,3,5)} // also array*, list* and set*
${#strings.substringAfter(name,prefix)} // also array*, list* and set*
${#strings.substringBefore(name,suffix)} // also array*, list* and set*
${#strings.replace(name,'las','ler')} // also array*, list* and set*
/*
* Append and prepend
* Also works with arrays, lists or sets
*/
${#strings.prepend(str,prefix)} // also array*, list* and set*
${#strings.append(str,suffix)} // also array*, list* and set*
/*
* Change case
* Also works with arrays, lists or sets
*/
${#strings.toUpperCase(name)} // also array*, list* and set*
${#strings.toLowerCase(name)} // also array*, list* and set*
/*
* Split and join
*/
${#strings.arrayJoin(namesArray,',')}
${#strings.listJoin(namesList,',')}
${#strings.setJoin(namesSet,',')}
${#strings.arraySplit(namesStr,',')} // returns String[]
${#strings.listSplit(namesStr,',')} // returns List<String>
${#strings.setSplit(namesStr,',')} // returns Set<String>
/*
* Trim
* Also works with arrays, lists or sets
*/
${#strings.trim(str)} // also array*, list* and set*
/*
* Compute length
* Also works with arrays, lists or sets
*/
${#strings.length(str)} // also array*, list* and set*
/*
* Abbreviate text making it have a maximum size of n. If text is bigger, it
* will be clipped and finished in "..."
* Also works with arrays, lists or sets
*/
${#strings.abbreviate(str,10)} // also array*, list* and set*
/*
* Convert the first character to upper-case (and vice-versa)
*/
${#strings.capitalize(str)} // also array*, list* and set*
${#strings.unCapitalize(str)} // also array*, list* and set*
/*
* Convert the first character of every word to upper-case
*/
${#strings.capitalizeWords(str)} // also array*, list* and set*
${#strings.capitalizeWords(str,delimiters)} // also array*, list* and set*
/*
* Escape the string
*/
${#strings.escapeXml(str)} // also array*, list* and set*
${#strings.escapeJava(str)} // also array*, list* and set*
${#strings.escapeJavaScript(str)} // also array*, list* and set*
${#strings.unescapeJava(str)} // also array*, list* and set*
${#strings.unescapeJavaScript(str)} // also array*, list* and set*
/*
* Null-safe comparison and concatenation
*/
${#strings.equals(str)}
${#strings.equalsIgnoreCase(str)}
${#strings.concat(str)}
${#strings.concatReplaceNulls(str)}
/*
* Random
*/
${#strings.randomAlphanumeric(count)}
Objects
#objects : utility methods for objects in general
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Objects
* ======================================================================
*/
/*
* Return obj if it is not null, and default otherwise
* Also works with arrays, lists or sets
*/
${#objects.nullSafe(obj,default)}
${#objects.arrayNullSafe(objArray,default)}
${#objects.listNullSafe(objList,default)}
${#objects.setNullSafe(objSet,default)}
Booleans
#bools : utility methods for boolean evaluation
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Bools
* ======================================================================
*/
/*
* Evaluate a condition in the same way that it would be evaluated in a th:if tag
* (see conditional evaluation chapter afterwards).
* Also works with arrays, lists or sets
*/
${#bools.isTrue(obj)}
${#bools.arrayIsTrue(objArray)}
${#bools.listIsTrue(objList)}
${#bools.setIsTrue(objSet)}
/*
* Evaluate with negation
* Also works with arrays, lists or sets
*/
${#bools.isFalse(cond)}
${#bools.arrayIsFalse(condArray)}
${#bools.listIsFalse(condList)}
${#bools.setIsFalse(condSet)}
/*
* Evaluate and apply AND operator
* Receive an array, a list or a set as parameter
*/
${#bools.arrayAnd(condArray)}
${#bools.listAnd(condList)}
${#bools.setAnd(condSet)}
/*
* Evaluate and apply OR operator
* Receive an array, a list or a set as parameter
*/
${#bools.arrayOr(condArray)}
${#bools.listOr(condList)}
${#bools.setOr(condSet)}
Arrays
#arrays : utility methods for arrays
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Arrays
* ======================================================================
*/
/*
* Converts to array, trying to infer array component class.
* Note that if resulting array is empty, or if the elements
* of the target object are not all of the same class,
* this method will return Object[].
*/
${#arrays.toArray(object)}
/*
* Convert to arrays of the specified component class.
*/
${#arrays.toStringArray(object)}
${#arrays.toIntegerArray(object)}
${#arrays.toLongArray(object)}
${#arrays.toDoubleArray(object)}
${#arrays.toFloatArray(object)}
${#arrays.toBooleanArray(object)}
/*
* Compute length
*/
${#arrays.length(array)}
/*
* Check whether array is empty
*/
${#arrays.isEmpty(array)}
/*
* Check if element or elements are contained in array
*/
${#arrays.contains(array, element)}
${#arrays.containsAll(array, elements)}
Lists
#lists : utility methods for lists
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Lists
* ======================================================================
*/
/*
* Converts to list
*/
${#lists.toList(object)}
/*
* Compute size
*/
${#lists.size(list)}
/*
* Check whether list is empty
*/
${#lists.isEmpty(list)}
/*
* Check if element or elements are contained in list
*/
${#lists.contains(list, element)}
${#lists.containsAll(list, elements)}
/*
* Sort a copy of the given list. The members of the list must implement
* comparable or you must define a comparator.
*/
${#lists.sort(list)}
${#lists.sort(list, comparator)}
Sets
#sets : utility methods for sets
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Sets
* ======================================================================
*/
/*
* Converts to set
*/
${#sets.toSet(object)}
/*
* Compute size
*/
${#sets.size(set)}
/*
* Check whether set is empty
*/
${#sets.isEmpty(set)}
/*
* Check if element or elements are contained in set
*/
${#sets.contains(set, element)}
${#sets.containsAll(set, elements)}
Maps
#maps : utility methods for maps
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Maps
* ======================================================================
*/
/*
* Compute size
*/
${#maps.size(map)}
/*
* Check whether map is empty
*/
${#maps.isEmpty(map)}
/*
* Check if key/s or value/s are contained in maps
*/
${#maps.containsKey(map, key)}
${#maps.containsAllKeys(map, keys)}
${#maps.containsValue(map, value)}
${#maps.containsAllValues(map, value)}
Aggregates
#aggregates : utility methods for creating aggregates on arrays or collections
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Aggregates
* ======================================================================
*/
/*
* Compute sum. Returns null if array or collection is empty
*/
${#aggregates.sum(array)}
${#aggregates.sum(collection)}
/*
* Compute average. Returns null if array or collection is empty
*/
${#aggregates.avg(array)}
${#aggregates.avg(collection)}
Messages
#messages : utility methods for obtaining externalized messages inside variables expressions, in the same way as they would be obtained using #{...} syntax.
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Messages
* ======================================================================
*/
/*
* Obtain externalized messages. Can receive a single key, a key plus arguments,
* or an array/list/set of keys (in which case it will return an array/list/set of
* externalized messages).
* If a message is not found, a default message (like '??msgKey??') is returned.
*/
${#messages.msg('msgKey')}
${#messages.msg('msgKey', param1)}
${#messages.msg('msgKey', param1, param2)}
${#messages.msg('msgKey', param1, param2, param3)}
${#messages.msgWithParams('msgKey', new Object[] {param1, param2, param3, param4})}
${#messages.arrayMsg(messageKeyArray)}
${#messages.listMsg(messageKeyList)}
${#messages.setMsg(messageKeySet)}
/*
* Obtain externalized messages or null. Null is returned instead of a default
* message if a message for the specified key is not found.
*/
${#messages.msgOrNull('msgKey')}
${#messages.msgOrNull('msgKey', param1)}
${#messages.msgOrNull('msgKey', param1, param2)}
${#messages.msgOrNull('msgKey', param1, param2, param3)}
${#messages.msgOrNullWithParams('msgKey', new Object[] {param1, param2, param3, param4})}
${#messages.arrayMsgOrNull(messageKeyArray)}
${#messages.listMsgOrNull(messageKeyList)}
${#messages.setMsgOrNull(messageKeySet)}
IDs
#ids : utility methods for dealing with id attributes that might be repeated (for example, as a result of an iteration).
/*
* ======================================================================
* See javadoc API for class org.thymeleaf.expression.Ids
* ======================================================================
*/
/*
* Normally used in th:id attributes, for appending a counter to the id attribute value
* so that it remains unique even when involved in an iteration process.
*/
${#ids.seq('someId')}
/*
* Normally used in th:for attributes in <label> tags, so that these labels can refer to Ids
* generated by means if the #ids.seq(...) function.
*
* Depending on whether the <label> goes before or after the element with the #ids.seq(...)
* function, the "next" (label goes before "seq") or the "prev" function (label goes after
* "seq") function should be called.
*/
${#ids.next('someId')}
${#ids.prev('someId')}
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