This tutorial demonstrates how to include static resources to
Thymeleaf. We use Spring Boot to start our application. We are loading static
resources from the class-path and from org.webjars.
The static resources are located in the src/main/resources/static folder.
Project Structure
Let’s start by looking at the project
structure.
Maven Dependencies
We use Apache Maven to manage our
project dependencies. Make sure the following dependencies reside on the
class-path.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.memorynotfound.spring.mvc.thymeleaf</groupId>
<artifactId>include-javascript-css</artifactId>
<version>1.0.0-SNAPSHOT</version>
<url>http://memorynotfound.com</url>
<name>Spring MVC - ${project.artifactId}</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- webjar
bootstrap and jquery dependencies -->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.7</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.2.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Spring Boot
We use Spring Boot to start our
application.
package com.memorynotfound.thymeleaf;
import
org.springframework.boot.SpringApplication;
import
org.springframework.boot.autoconfigure.SpringBootApplication;
import
org.springframework.stereotype.Controller;
import
org.springframework.web.bind.annotation.RequestMapping;
@Controller
@SpringBootApplication
public class
Run {
@RequestMapping("/")
public String welcome() {
return "home";
}
public static void main(String... args) throws Exception {
SpringApplication.run(Run.class, args);
}
}
Configure static resource locations. We
support img, css, js and webjars. Typically in a spring boot
application you can ignore these configurations because it’s done
automatically. But you can customize the static resources loading using the
following configuration.
package com.memorynotfound.thymeleaf;
import
org.springframework.context.annotation.Configuration;
import
org.springframework.web.servlet.config.annotation.EnableWebMvc;
import
org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import
org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
@EnableWebMvc
public class
WebConfig extends WebMvcConfigurerAdapter {
@Override
public void
addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler(
"/webjars/**",
"/img/**",
"/css/**",
"/js/**")
.addResourceLocations(
"classpath:/META-INF/resources/webjars/",
"classpath:/static/img/",
"classpath:/static/css/",
"classpath:/static/js/");
}
}
Static Resources CSS and JavaScript
The CSS
static resources are located in the src/main/resources/static/css folder.
h1 {
color: #78ab46;
}
The JavaScript static resources are located in the src/main/resources/static/js folder.
function greeting(){
alert("hello, world");
}
Adding Static Resources to Thymeleaf
You can add static resources to
thymeleaf using the @{<path>} syntax. In the following example we
load the static resources (bootstrap and jquery
from org.webjars and our own static resources from src/main/resources/static/... folder.
<!DOCTYPE html>
<html
xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<!-- include
css in the header -->
<link rel="stylesheet" type="text/css"
th:href="@{/webjars/bootstrap/3.3.7/css/bootstrap.min.css}"/>
<link rel="stylesheet" type="text/css" th:href="@{/css/style.css}"/>
<title>Adding Static Resources (css,
JavaScript, Images) to Thymeleaf</title>
</head>
<body>
<div class="container">
<h1>
<!-- include image from static resources -->
<img th:src="@{/img/logo.png}" alt="memorynotfound
logo"/>
Adding Static Resources (css,
JavaScript, Images) to Thymeleaf
</h1>
</div>
<!-- include
javascript in the footer -->
<script type="text/javascript" th:src="@{/webjars/jquery/3.2.1/jquery.min.js/}"></script>
<script type="text/javascript"
th:src="@{/webjars/bootstrap/3.3.7/js/bootstrap.min.js}"></script>
<script type="text/javascript" th:src="@{/js/lib.js}"></script>
</body>
</html>
Demo
To illustrate the resources are loaded
we can access the http://localhost:8080 .
When we inspect the source code, we see
the following HTML.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<!-- include
css in the header -->
<link rel="stylesheet" type="text/css"
href="/webjars/bootstrap/3.3.7/css/bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="/css/style.css" />
<title>Adding Static Resources (css,
JavaScript, Images) to Thymeleaf</title>
</head>
<body>
<div class="container">
<h1>
<!-- include image from static resources -->
<img alt="memorynotfound
logo" src="/img/logo.png" />
Adding Static Resources (css,
JavaScript, Images) to Thymeleaf
</h1>
</div>
<!-- include
javascript in the footer -->
<script type="text/javascript" src="/webjars/jquery/3.2.1/jquery.min.js/"></script>
<script type="text/javascript" src="/webjars/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script type="text/javascript" src="/js/lib.js"></script>
</body>
</html>
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