Spring Boot JPA returns correct count but no data-CodePudding

Evening,

I have a Spring application that is connected to a PostgresSQL db. I can connect to the database and see that the query is returning the correct number of elements for the array but nothing in them:

curl http://localhost:8080/books
[{},{},{}]%

My Book model looks like this:


import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import java.math.BigDecimal;

@Entity
public class Book {
  
  @Id
  @GeneratedValue
  private Long id;
  
  private String name;
  private String author;
  private BigDecimal price;

  public Book() {}

  public Book(String name, String author, BigDecimal price) {
    this.name = name;
    this.author = author;
    this.price = price;
  }
}

and the controller:

@RestController
public class BookController {

  @Autowired
  private BookRepository repository;

  // Find
  @GetMapping("/books")
  List<Book> findAll() {
    List<Book> books = repository.findAll();
    System.out.println(books);

    return repository.findAll();
  }

}

I've looked at these questions here, here and here but those answers didn't fit with this.

What am I not doing to see data come back?

CodePudding user response：

In order for your entity to be serialized by Spring the entity needs to have getters for its properties. You could use lombok to auto-generate getter/setters for you entity properties or just write them your own.