Playframework Ebean.Save () gives the connection closed

Question

I have a playback structure with a simple model Address, but when I call the ebean #save () method, I get the following errors.

The database is set up correctly. I think (I can read models without problems). My unit tests that work in the H2 database work fine.

the code:

  Address address = new Address(street, postalcode, location);
  address.save();

Play output:

[error] c.j.b.ConnectionHandle - Database access problem. Killing off this connection and all remaining connections in the connection pool. SQL State = HY000
[error] play - Cannot invoke the action, eventually got an error: javax.persistence.PersistenceException: java.sql.SQLException: Connection is closed!

Class address

@Entity
public class Address extends Model {
@Id
    public int id;
    public String postalcode;
    public String street;
    public String location;

    @OneToMany(cascade= CascadeType.ALL)
    public List<Estate> estates;

    public Address(String street, String postalcode, String location){
        this.postalcode = postalcode;
        this.street = street;
        this.location = location;
    }
    public Address(int id, String street, String postalcode, String location){
        this.id = id;
        this.postalcode = postalcode;
        this.street = street;
        this.location = location;
    }
    public static Finder<Integer,Address> find = new Finder<Integer, Address>(
        Integer.class, Address.class
    );
}

Answer 1

I found a solution: the model id value was not created by ebean.

Setting auto_increment to id field in my mysql database.