i’m new to spring boot so i got this error.
Description:

Field productService in com.itac.main.DataApplication required a bean of type ‘com.itac.service.ProductService’ that could not be found.

The injection point has the following annotations:
– @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean of type ‘com.itac.service.ProductService’ in your configuration.

it’s ProductService

package com.itac.service;

import java.util.Optional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.itac.model.Product;
import com.itac.repository.ProductRepository;


@Service
public class ProductService{

    @Autowired
    private ProductRepository productRepository;


    public Iterable<Product> getProducts() {
        return productRepository.findAll();
    }
    
    public Optional<Product> getProductById(Integer id) {
        return productRepository.findById(id);
    } 
}

it’s dataapplication

package com.itac.main;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import com.itac.model.Product;
import com.itac.service.ProductService;

@SpringBootApplication
public class DataApplication implements CommandLineRunner {

    @Autowired
    private ProductService productService;
    
    public static void main(String[] args) {
        SpringApplication.run(DataApplication.class, args);
    }

    @Override
    public void run(String... args) throws Exception {      
        Iterable<Product> products = productService.getProducts();
        products.forEach(product -> System.out.println(product.getName()));
    }
}

it’s ProducductRepository interface

package com.itac.repository;

import org.springframework.data.repository.CrudRepository;
import com.itac.model.Product;

public interface ProductRepository extends CrudRepository<Product, Integer> {

}

and application.properties

spring.application.name=data

spring.datasource.url=jdbc:mysql://localhost:3306/library
spring.datasource.username=root
spring.datasource.password=
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQLDialect
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true


#Tomcat configuration
 server.port=9001
 
 #Log level configuration
 logging.level.root=ERROR
 logging.level.com.openclassrooms=INFO
 logging.level.org.springframework.boot.web.embedded.tomcat=INFO

i added @service and @Autowired but nothing