嘗試創建數據庫模式 - 沒有可用的數據庫提供程序，無法創建連接

Question

我以Northwind spring.net/NHibernate示例開始。我試圖讓現有的示例生成一個模式。我改變了CustomerEditController web.xml中進入

<object name="CustomerEditController" type="NHibernateCustomerEditController" scope="session"> 
    <constructor-arg name="sessionFactory" ref="NHibernateSessionFactory"/> 
    <constructor-arg name="local" ref="&amp;NHibernateSessionFactory"/> 
</object>` 

改變了NHibernateCustomerEditController以下幾點：

public class NHibernateCustomerEditController : ICustomerEditController 
{ 
    private readonly ISessionFactory sessionFactory; 
    private readonly LocalSessionFactoryObject LocalsessionFactory; 
    private Customer currentCustomer; 

    public NHibernateCustomerEditController(ISessionFactory sessionFactory, LocalSessionFactoryObject local) 
    { 
     this.sessionFactory = sessionFactory; 
     this.LocalsessionFactory = local; 
    } 

    private ISession Session 
    { 
     get { return sessionFactory.GetCurrentSession(); } 
    } 

    public void EditCustomer(Customer customer) 
    { 
     currentCustomer = customer; 
    } 

    public void Clear() 
    { 
     currentCustomer = null; 
    } 

    public Customer CurrentCustomer 
    { 
     get 
     { 
      Customer customer = currentCustomer; 

      //since the Customer entity may have been retrieved from a prior request, we need to reattach it to the current session 
      // in order to support lazy-loading, etc. on the Customer 
      Session.Lock(customer, LockMode.None); 

      return customer; 
     } 
    } 
    public void MakeANewDatabase() { 
     SchemaExport schema = new SchemaExport(LocalsessionFactory.Configuration); 
     schema.Create(true, true); 
    } 

} 

我添加了一個按鈕，導致了MakeANewDatabase方法客戶列表頁面。

當我按下按鈕我收到錯誤There was no DB provider available, unable to create connection。它看起來像SchemaExport正在創建DBProvider爲空。

完整的錯誤文本：

An exception of type 'System.Exception' occurred in Spring.Data.NHibernate30.DLL but was not handled in user code 

Additional information: There was no DB provider available, unable to create connection 

An exception of type 'NHibernate.HibernateException' occurred in NHibernate.DLL but was not handled in user code 

Additional information: There was no DB provider available, unable to create connection 

Answer 1

它看起來像配置從本地會話工廠拉不完全填充，用彈簧的方法解決了這個問題。

public void MakeANewDatabase() 
{ 
    LocalsessionFactory.CreateDatabaseSchema(); 
}