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名师互学网 > IT > 软件开发 > 后端开发 > Java

Springboot-Web初识

Java 更新时间: 发布时间: IT归档 最新发布 模块sitemap 名妆网 法律咨询 聚返吧 英语巴士网 伯小乐 网商动力

Springboot-Web初识

 1.静态资源位置

resources>static:>public

在templates目录下只能通过controller跳转==(需要thymeleaf模板引擎的支持)==

2.springboot自带彩蛋

 (1).网页图标

 (2).banner

 

 3.Thymeleaf

thymeleaf视图解析器中redirect/forward好像没了

 (1).相关的html文件中头部


        xmlns:th="http://www.thymeleaf.org"
   
 

相关语法

 

 (2).我们可以使用任意的 th:attr 来替换Html中原生属性的值!

 (3).我们能写哪些表达式呢?

Simple expressions:(表达式语法)
Variable Expressions: ${...}:获取变量值;OGNL;
    1)、获取对象的属性、调用方法
    2)、使用内置的基本对象:#18
         #ctx : the context object.
         #vars: the context variables.
         #locale : the context locale.
         #request : (only in Web Contexts) the HttpServletRequest object.
         #response : (only in Web Contexts) the HttpServletResponse object.
         #session : (only in Web Contexts) the HttpSession object.
         #servletContext : (only in Web Contexts) the ServletContext object.

    3)、内置的一些工具对象:
      #execInfo : information about the template being processed.
      #uris : methods for escaping parts of URLs/URIs
      #conversions : methods for executing the configured conversion service (if any).
      #dates : methods for java.util.Date objects: formatting, component extraction, etc.
      #calendars : analogous to #dates , but for java.util.Calendar objects.
      #numbers : methods for formatting numeric objects.
      #strings : methods for String objects: contains, startsWith, prepending/appending, etc.
      #objects : methods for objects in general.
      #bools : methods for boolean evaluation.
      #arrays : methods for arrays.
      #lists : methods for lists.
      #sets : methods for sets.
      #maps : methods for maps.
      #aggregates : methods for creating aggregates on arrays or collections.
==================================================================================

  Selection Variable Expressions: *{...}:选择表达式:和${}在功能上是一样;
  Message Expressions: #{...}:获取国际化内容
  Link URL Expressions: @{...}:定义URL;
  Fragment Expressions: ~{...}:片段引用表达式

Literals(字面量)
      Text literals: 'one text' , 'Another one!' ,…
      Number literals: 0 , 34 , 3.0 , 12.3 ,…
      Boolean literals: true , false
      Null literal: null
      Literal tokens: one , sometext , main ,…
      
Text operations:(文本操作)
    String concatenation: +
    Literal substitutions: |The name is ${name}|
    
Arithmetic operations:(数学运算)
    Binary operators: + , - , * , / , %
    Minus sign (unary operator): -
    
Boolean operations:(布尔运算)
    Binary operators: and , or
    Boolean negation (unary operator): ! , not
    
Comparisons and equality:(比较运算)
    Comparators: > , < , >= , <= ( gt , lt , ge , le )
    Equality operators: == , != ( eq , ne )
    
Conditional operators:条件运算(三元运算符)
    If-then: (if) ? (then)
    If-then-else: (if) ? (then) : (else)
    Default: (value) ?: (defaultvalue)
    
Special tokens:
    No-Operation: _

 

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