Playframework Ebean.Save（）給連接關閉

Question

我有一個簡單的Address模型的播放框架，但在調用ebean的#save（）方法時，我得到以下錯誤。

數據庫配置正確我認爲（我可以讀取模型沒有問題）。我的單元測試在內存H2數據庫上運行的哪個工作正常。

代碼：

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

播放輸出：

[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! 

Address類

@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

我發現瞭解決方案：沒有被由ebean生成的模型的ID值。

設置我的mysql數據庫上的ID字段上的auto_increment工作。