I created a project that insert on PostgreSQL table Pato through Api rest of Spring.

First i download the project from Spring Initializr

i created the java class Pato :

@Entity
public class Pato {

    private Pato() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer id;
    public String getNombre() {
        return nombre;
    }

    public void setNombre(String nombre) {
        this.nombre = nombre;
    }

    public int getEdad() {
        return edad;
    }

    public void setEdad(int edad) {
        this.edad = edad;
    }

    private String nombre;
    private int edad;



}

Then i created PatoControler

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.List;

@RestController
@Slf4j
public class PatoControler {

    PatoRepository repPato  ;

    public PatoControler(PatoRepository repPato) {
        this.repPato = repPato;
    }

    @GetMapping
    public String getObtenerNombre () {
        return "pato";
    }

    @GetMapping("/patos")
    public Iterable<Pato> getObtenerNombres () {
       // System.out.printf("obtener nombres");
        return repPato.findAll();
    }

    private List<Pato> patoList = new ArrayList<>();

@PostMapping("/patos")
public List<Pato> crearNombre ( @RequestBody Pato patroclo)
{
    System.out.printf("crear nombres " +  patroclo.getNombre());
    repPato.save(patroclo);

    patoList.add(patroclo);

    return patoList;

}


}

after i created a interface to extends CrudRepository

import org.springframework.data.repository.CrudRepository;

import java.util.List;

public interface PatoRepository  extends CrudRepository <Pato, Integer>{

    List<Pato> findByNombre(String Nombre);

    Pato findById(int id);

}

I had to add dependencies to pom.xml

	<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>

		</dependency>

		<dependency>
			<groupId>org.postgresql</groupId>
			<artifactId>postgresql</artifactId>
			<scope>runtime</scope>
		</dependency>

i had to add the connection to the database of supabase

spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:postgresql://db.mydb.supabase.co:5432/postgres
spring.datasource.username=user01
spring.datasource.password=123456
spring.jpa.properties.hibernate.dialect= org.hibernate.dialect.PostgreSQLDialect

Test with Postman

Then we see on the database on SupaBase

https://supabase.com/

https://juliovaldiviamarin.com

 

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