Create spring boot application in IntelliJ idea

Create spring boot application

First, you need to IntelliJ IDEA for development then click and download IntelliJ IDEA.

1. Click create new project button:

2. Create the Maven project:

3. Enter your project name:

4. Add the following dependency in the pom.xml file:

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>2.5.1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <version>2.3.4.RELEASE</version>
    </dependency>
</dependencies>

5. POM.xml file:

<?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>org.example</groupId>
    <artifactId>Spring_Boot_Rest_APIs</artifactId>
    <version>1.0-SNAPSHOT</version>
 
    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.5.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>2.3.4.RELEASE</version>
        </dependency>
    </dependencies>
</project>

6. Create one main class Application.java:

package com;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.web.WebApplicationInitializer;
 
@SpringBootApplication
public class Application extends SpringBootServletInitializer implements WebApplicationInitializer {
    public static void main(String[] arg){
        SpringApplication.run(Application.class,arg);
    }
}

7. Create one testing Controller class PingController.java:

package com.controller;
 
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
 
@RestController
public class PingController {
 
    @RequestMapping(value = "/Hello", method = RequestMethod.GET)
    public String ping(){
        return "Subscribe Technical Ramchander Youtube Channel";
    }
}