In this section we will show you 5 steps to create a spring boot application to display a hello world example page.
Technologies used:
- Spring Boot 2.7.1.RELEASE
- Java 17
- Maven 4.0.0
- STS IDE
1. Create New Project
2. Project dependencies
when you finish it successfully. you will get pom.xml file as below:
pom.xml
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.1</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.gardenworktoday</groupId> <artifactId>spring-boot-hello-world-example</artifactId> <version>0.0.1-SNAPSHOT</version> <name>spring-boot-hello-world-example</name> <description>Spring Boot Hello World Example</description> <properties> <java.version>17</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
3. The controller
HelloWorldController.java
package com.gardenworktoday.demo;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
@Controller
public class HelloWorldController {
@GetMapping({"/","/helloworld"})
public String helloWorld() {
return "hello_world";
}
}
hello_world.html
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Spring Boot Hello World</title> </head> <body> <h1>Hello World</h1> </body> </html>
4. Project directory
5. View on Browser
Open the browser and invoke the URL http://localhost:8080/helloworld. we can see the hello world that compile from controller.
