Modern Java web applications with Spring Boot and Thymeleaf
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If you’re using Java in an enterprise environment, you’ve most likely been using Spring Framework with JSP which does the job pretty well.But I will provide the sampling of how Spring Boot helps you accelerate and facilitate application development better. I will show a templating technology, Thymleaf which can be used much more modern features;
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Modern Java web applications with Spring Boot and Thymeleaf
- 1. Modern Java web applications with Spring Boot and Thymeleaf Mr. LAY Leangsros Instructor & Web App Developer School of E-commerce and Logistics, NIPTICT m: +855 89 909 978 e: laysros@niptict.edu.kh, laysros@ymail.com https://goo.gl/V10mJL
- 2. Web Frameworks • Laravel, Symfony, CakePHP framework for PHP • Django for Python • Rails for Ruby • ASP.NET for .NET • Catalyst for Perl
- 3. Content • What is Spring? • History • Features • Structure • What is Thymeleaf? • Using Thymeleaf • Let’s build it!
- 4. What is Spring? • Spring is a mature yet still innovative open-source framework • Spring has a very active community • Spring is light-weight
- 5. History • 1999 J2EE 1.2 • 2004 Spring Framework 1.0 • Injection • POJO oriented • AOP & transactions • 2006 Java EE 5 • 2013 Spring Boot!
- 6. Features • Stand-alone Spring applications • Embedded Tomcat or Jetty • Starter dependencies • Automatic configuration • Production-ready environment • No code generation / no XML configuration • Easy to use but powerful database transaction management capabilities
- 7. Features • Spring Data: Simplifies data access from relational and NoSQL data stores. • Spring Security: Robust security framework to secure applications. • Spring Social: Supports integration with social networking sites like Facebook, Twitter, LinkedIn, GitHub etc.
- 8. Structure • Controller (Request Mapping) • Model (Object) • Repository (Database, data manipulation) • Service (Email, Notification..) • Configure (Security, Endpoint, WebSocket, ..) • …etc.
- 9. What is Thymeleaf? Thymeleaf is a Java XML/XHTML/HTML5 template engine that can work both in web (Servlet-based) and non-web environments. Who's using Thymeleaf?
- 10. Using Thymeleaf Simple expressions: •Variable Expressions: ${...} • Selection Variable Expressions: *{...} • Message Expressions: #{...} • Link URL Expressions: @{...}
- 11. Using Thymeleaf •th:field •th:form •th:alt •th:action •th:href • th:src • th:value • th:replace • th:include • th:text Binding expressions: •th:if •th:each •th:remove • th:switch/ th:case
- 12. Using Thymeleaf Example <h1 class="title" th:text="${post.title}"></h1> <div class="might-grid" th:each="post : ${posts}"></div> <img class="img-responsive" alt="" th:src="${post.thumbnailUrl}"/> <span th:utext="${post.content}"></span> <h4><a th:href="${'/news/' + post.id}" th:inline="text">[[${post.title}]]</a></h4> <label th:text="#{name}"></label> <input type="text" class="form-control" th:field="*{name}"/>
- 13. Let’s Build it! Requirements • JDK 1.7 or later • Spring Tool Suite • (Internet) Create New Project • File -> New -> Spring Start Project
- 15. Let’s Build it! Spring Boot Application @SpringBootApplication public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }
- 16. Let’s Build it! @Controller public class HomeController { @RequestMapping("/") public String greeting(Model model) { model.addAttribute("barcamp", "Hello Barcamp 2016"); return "index"; } } Controller
- 17. Let’s Build it! Thymeleaf Template (View) <!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org"> <body> <h1 th:text="${barcamp}"></h1> </body> </html>
- 18. Let’s Build it! server.port = 9999
- 19. You have questions? I (probably) have answers
- 20. References • Thymeleaf Advanced Usage https://doanduyhai.wordpress.com/2012/04/14 /spring-mvc-part-iv-thymeleaf-advanced-usage/ • Thymeleaf Doc, http://www.thymeleaf.org/doc • http://www.thymeleaf.org/doc/tutorials/2.1/usi ngthymeleaf.html#the-template-engine • Spring Boot – framework for micro services, Jakub Kubryński, ppt.