Spring.net Nhibernate dao is null

本文关键字：is null dao Nhibernate net Spring | 更新日期: 2023-09-27 17:58:22

我遵循了spring.net文档和northwind示例。

BereikDao

[Repository]
public class BereikDao : HibernateDao, IBereikDao
{
    [Transaction(ReadOnly = true)]
    public model.Bereik getById(int id)
    {
        return CurrentSession.Get<Bereik>(id);
    }
    [Transaction(ReadOnly = true)]
    public IList<Bereik> getAll()
    {
        return getAll<Bereik>();
    }
}

Hibernate Dao

public abstract class HibernateDao
{
    private ISessionFactory sessionFactory;
    /// <summary>
    /// Session factory for sub-classes.
    /// </summary>
    public ISessionFactory SessionFactory
    {
        protected get { return sessionFactory; }
        set { sessionFactory = value; }
    }
    /// <summary>
    /// Get's the current active session. Will retrieve session as managed by the 
    /// Open Session In View module if enabled.
    /// </summary>
    protected ISession CurrentSession
    {
        get { return sessionFactory.GetCurrentSession(); }
    }
    protected IList<T> getAll<T>() where T : class
    {
        ICriteria criteria = CurrentSession.CreateCriteria<T>();
        return criteria.List<T>();
    }
}

spring-dao.xml

<objects xmlns="http://www.springframework.net"
         xmlns:db="http://www.springframework.net/database"
         xmlns:tx="http://www.springframework.net/tx">
    <db:provider id="DbProvider"
                       provider="IfxOdbc" connectionString="Dsn=${db.dsn};Host=${db.host};Server=${db.server};Service=${db.service};Database=${db.database};UID=${db.user};Password=${db.password};"/>
  <object id="appConfigPropertyHolder"
         type="Spring.Objects.Factory.Config.PropertyPlaceholderConfigurer, Spring.Core">
     <property name="configSections" value="databaseSettings"/>
      </object>
      <object id="NHibernateSessionFactory" type="Demo.dao.CustomLocalSessionFactoryObject">
        <property name="DbProvider" ref="DbProvider"/>
        <property name="MappingAssemblies">
          <list>
            <value>Demo</value>
          </list>
        </property>
        <property name="HibernateProperties">
          <dictionary>
            <entry key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider"/>
            <entry key="dialect" value="NHibernate.Dialect.InformixDialect1000"/>
            <entry key="connection.driver_class" value="NHibernate.Driver.IfxDriver"/>
            <entry key="show_sql" value="true" />
          </dictionary>
        </property>

    <property name="ExposeTransactionAwareSessionFactory" value="true" />

    </object>
  <object id="transactionManager"
        type="Spring.Data.NHibernate.HibernateTransactionManager, Spring.Data.NHibernate33">
    <property name="DbProvider" ref="DbProvider"/>
    <property name="SessionFactory" ref="NHibernateSessionFactory"/>
  </object>
  <object type="Spring.Dao.Attributes.PersistenceExceptionTranslationPostProcessor, Spring.Data"/>
  <object id="bereikDao" type="Demo.dao.BereikDao">
    <property name="SessionFactory" ref="NHibernateSessionFactory"/>
  </object>
  <object id="bereikService" type="Demo.service.impl.BereikService">
    <property name="bereikDao" ref="bereikDao"/>
  </object>
  <tx:attribute-driven transaction-manager="transactionManager" proxy-target-type="true"/>

</objects>

BereikService

public class BereikService : IBereikService
{
    private IBereikDao _bereikDao;
    public IBereikDao bereikDao
    {
        get { return _bereikDao; }
        set { _bereikDao = value; }
    }
    [Transaction]
    public IList<model.Bereik> getAll()
    {
        return _bereikDao.getAll();
    }
}

在我的应用程序中：

bereikService = (BereikService)ctx.GetObject("bereikService");
IList<Bereik> bereiken = bereikService.getAll();

在bereikService中调试bereikDao时为null。

突然出现以下错误：

'Errors' node cannot be resolved for the specified context [System.InvalidCastException: Kan een object van het type System.Data.Odbc.OdbcConnection niet converteren naar het type IBM.Data.Informix.IfxConnection.
   bij IBM.Data.Informix.IfxCommand.System.Data.IDbCommand.set_Connection(IDbConnection value)
   bij NHibernate.AdoNet.AbstractBatcher.Prepare(IDbCommand cmd) in p:'nhibernate-core'src'NHibernate'AdoNet'AbstractBatcher.cs:regel 112
   bij NHibernate.AdoNet.AbstractBatcher.ExecuteReader(IDbCommand cmd) in p:'nhibernate-core'src'NHibernate'AdoNet'AbstractBatcher.cs:regel 217
   bij NHibernate.Loader.Loader.GetResultSet(IDbCommand st, Boolean autoDiscoverTypes, Boolean callable, RowSelection selection, ISessionImplementor session) in p:'nhibernate-core'src'NHibernate'Loader'Loader.cs:regel 1226
   bij NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) in p:'nhibernate-core'src'NHibernate'Loader'Loader.cs:regel 421
   bij NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) in p:'nhibernate-core'src'NHibernate'Loader'Loader.cs:regel 251
   bij NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters) in p:'nhibernate-core'src'NHibernate'Loader'Loader.cs:regel 1564].

translated:无法将System.Data.Odbc.OdbcConnection的对象转换为IBM.Data.Informaix.IfxConnection。Nhibernate bug？

来自调试：

Spring.Data.NHibernate.HibernateTransactionManager - Exposing Hibernate transaction as ADO transaction [System.Data.Odbc.OdbcConnection]

Spring.net Nhibernate dao is null

如果执行此操作后仍然出现错误，请告诉我。

首先将对象引用添加到Dao.XML并将其绑定到SessionFactory，如下所示：

<object id="BereikDao" type="Spring.Northwind.Dao.NHibernate.HibernateBereikDao,     Spring.Northwind.Dao.NHibernate">
<property name="SessionFactory" ref="NHibernateSessionFactory"/>
</object>

您还必须将对象引用添加到Service.xml并将其绑定到BereikDao，如下所示：

<object id="BereikService" type="Spring.Northwind.Service.BereikService, Spring.Northwind.Service">
<property name="BereikDao" ref="BereikDao"/>
</object>
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