Thymeleaf.
From this point on, let’s start building the simplest form of controller class with Java.
This time, let’s start building a controller that calls index.html.
First, create a package called “controller” below src/main/java, and create a new class HelloWorldController.java.
Here’s the code.
In the Java code, value = “/” indicates the URL.
And “message” is embedded into index.html’s corresponding part.
HelloWorldController.java.
package com.dreams.budget_trakcer_project.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class HelloWorldController {
@RequestMapping(value = "/", method = RequestMethod.GET)
public String helloWorld(Model model) {
model.addAttribute("message", "Hello World!!");
return "index";
}
}index.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
<title>Hello</title>
<meta charset="utf-8" />
</head>
<body>
<h1>Print Hello World</h1>
<h2><span th:text="${message}"></span></h2>
</body>
</html>When you run the project, you can see this on your browser.
