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    • Dec 4, 2021

Thymeleaf help

What is Thymeleaf?

Thymeleaf is a modern server-side Java template engine for both web and standalone environments. Thymeleaf's main goal is to bring elegant natural templates to your development workflow — HTML that can be correctly displayed in browsers and also work as static prototypes, allowing for stronger collaboration in development teams.


What is a template engine?

A template engine is software designed to combine templates with a data model to produce multiple pages that share the same look throughout the site


Why do we use Thymeleaf?

JSP is more or less similar to HTML. But it is not completely compatible with HTML like Thymeleaf. We can open and display a Thymeleaf template file normally in the browser while the JSP file does not.


What kind of templates can the Thymeleaf process?

Thymeleaf can process six types of templates (also known as Template Mode) are as follows:

  • XML

  • Valid XML

  • XHTML

  • Valid XHTML

  • HTML5

  • Legacy HTML5

Except for the Legacy HTML5 mode, all the above modes refer to well-defined XML files. It allows us to process HTML5 files with features such as standalone tags, tag attributes without value, or not written between quotes. To process files in this specific mode, Thymeleaf performs a transformation that converts files into a well-formed XML file (valid HTML5 file).


Some important features of Thymeleaf:

  • It works on both web and non-web environments.

  • Java template engine for HTML5/ XML/ XHTML.

  • Its high-performance parsed template cache reduces I/O to the minimum.

  • It can be used as a template engine framework if required.

  • It supports several template modes: XML, XHTML, and HTML5.

  • It allows developers to extend and create custom dialects.

  • It is based on modular features sets called dialects.

  • It supports internationalization.

Thymeleaf Implementation:


We can implement Thymeleaf template engine by adding spring-boot-starter-thymeleaf dependency in our application's pom.xml file. Spring Boot configures template engine to read template files from /resource/templates.


<dependency>  
<groupId>org.springframework.boot</groupId>  
<artifactId>spring-boot-starter-thymeleaf</artifactId>  
</dependency>

or you can use the following steps to implement thymeleaf in your web application


Step 1: Open Spring Initializr http://start.spring.io.

Step 2: Select the Spring Boot version 2.3.0.M1.

Step 2: Provide the Group name. We have provided com.codersarts.

Step 3: Provide the Artifact Id. We have provided spring-boot-thymeleaf-view-example.

Step 5: Add the dependencies Spring Web and Thymeleaf.

Step 6: Click on the Generate button. When we click on the Generate button, it wraps the specifications in a Jar file and downloads it to the local system.

Step 7: Extract the Jar file and import the extracted file to any IDE



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