makoto :
I've done a simple list with sql server, but it doesn't show me the result, it just shows me the white page. I have no error in the console. Will the sql server 2017 be? please any help?
connection to sql server 2017
spring.datasource.driver-class-name=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.url=jdbc:sqlserver://localhost;databaseName=DB_PRUEBA_V1;integratedSecurity=true
spring.jpa.show-sql=true
#spring.jpa.hibernate.ddl-auto=update
server.port=8090
package app
package app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ProyectoV2Application {
public static void main(String[] args) {
SpringApplication.run(ProyectoV2Application.class, args);
}
}
package model
package model;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "TB_USERS")
public class Users implements Serializable{
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "COD_USER")
private int codUser;
@Column(name = "NOM_USER")
private String nomUser;
@Column(name = "EMA_USER")
private String emUser;
public int getCodUser() {
return codUser;
}
public void setCodUser(int codUser) {
this.codUser = codUser;
}
public String getNomUser() {
return nomUser;
}
public void setNomUser(String nomUser) {
this.nomUser = nomUser;
}
public String getEmUser() {
return emUser;
}
public void setEmUser(String emUser) {
this.emUser = emUser;
}
}
package repository
package repository;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import model.Users;
@Repository
public interface UserDAO extends JpaRepository<Users, Integer>{
}
service
package service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import model.Users;
import repository.UserDAO;
@Service
public class UserService {
@Autowired
private UserDAO dao;
public List<Users> lista(){
return dao.findAll();
}
}
package controller
package controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import model.Users;
import service.UserService;
@RestController
@RequestMapping(value = "/CrudUsers")
public class UserController {
@Autowired
private UserService us;
@ResponseBody
@GetMapping(path = "/lista", produces = MediaType.APPLICATION_JSON_VALUE)
public List<Users> lista(){
return us.lista();
}
}
Deadpool :
Because you created each class in different package like below,
app --> ProyectoV2Application
model --> Users
repository --> UserDAO
service --> UserService
controller --> UserController
But spring boot scans the classes that are either in root package or in sub package of root package, so move all these classes into sub packages of root package
app --> ProyectoV2Application
app.model --> Users
app.repository --> UserDAO
app.service --> UserService
app.controller --> UserController
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