如何将 nhibernate 连接到本地 SQLEXPRESS？答案

【问题标题】：How connect nhibernate to local SQLEXPRESS?如何将 nhibernate 连接到本地 SQLEXPRESS？
【发布时间】：2012-02-29 19:01:32
【问题描述】：

我在项目中有简单的数据库连接：

public static string GetConnectionString()
        { 
            return @"Data Source=.\SQLEXPRESS;AttachDbFilename=" + HttpContext.Current.Request.PhysicalApplicationPath + "Application.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True";            
        }

现在我尝试将 NHibernate 实施到项目中。

hibernate.cfg.xml 在这里：

<?xml version="1.0" encoding="utf-8"?>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
  <session-factory>        
    <property name="proxyfactory.factory_class">NHibernate.ByteCode.Castle.ProxyFactoryFactory,NHibernate.ByteCode.Castle</property>
    <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>    
    <property name="connection.driver_class">NHibernate.Driver.MySqlDataDriver</property>  
    <property name="connection.connection_string">Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\1\Desktop\Application+\Application\Application.mdf;Integrated Security=True;User Instance=True</property>    
    <property name="dialect">NHibernate.Dialect.MySQL5Dialect</property>    
    <property name="show_sql">true</property>
  </session-factory>
</hibernate-configuration>

在这里测试类“Clients”对象：

    public class Clients
    {
        private Guid id;
        private string name;
        private string phone;
        private string fax;
        private string email;
        private string address;
        private string contactPerson;

        public virtual Guid Id
        {
            get { return id; }
            set { id = value; }
        }

        public virtual string Phone
        {
            get { return phone; }
            set { phone = value; }
        }

        public virtual string Fax
        {
            get { return fax; }
            set { fax = value; }
        }

        public virtual string Email
        {
            get { return email; }
            set { email = value; }
        }

        public virtual string Address
        {
            get { return address; }
            set { address = value; }
        }

        public virtual string ContactPerson
        {
            get { return contactPerson; }
            set { contactPerson = value; }
        }

        public virtual string Name
        {
            get { return name; }
            set { name = value; }
        }
    }

Clients.hbm.xml 在这里：

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="WrapperObjects" namespace="WrapperObjects">  
  <class name="Clients" table="Clients" lazy="false">  
    <id name="Id" column="id">
      <generator class="native"></generator>
    </id>
    <property name="Name" column="name" type="System.String"/>
    <property name="Phone" column="phone" type="System.String"/>
    <property name="Fax" column="fax" type="System.String"/>
    <property name="Email" column="email" type="System.String"/>
    <property name="Address" column="address" type="System.String"/>
    <property name="ContactPerson" column="contactPerson" type="System.String"/>    
  </class>
</hibernate-mapping>

我是这样使用的：

public static void Configure()
        {            
            sessions = new Configuration().Configure().AddClass(typeof(Clients)).BuildSessionFactory();
        }

        public static void Insert(Clients pb)
        {            
            using (ISession session = sessions.OpenSession())            
            using (ITransaction tx = session.BeginTransaction())
            {                
                session.Save(pb);                
                tx.Commit();
            }
        }

在Configure()方法出现错误：Keyword not supported.Parameter name: attachdbfilename 如何解决？？））

【问题讨论】：

标签： c# nhibernate nhibernate-mapping

【解决方案1】：

<?xml version="1.0" encoding="utf-8"?>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
  <session-factory>        
    <property name="proxyfactory.factory_class">NHibernate.ByteCode.Castle.ProxyFactoryFactory,NHibernate.ByteCode.Castle</property>
    <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>    
    <property name="connection.driver_class">NHibernate.Driver.MySqlDataDriver</property>  
    <property name="connection.connection_string">Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\1\Desktop\Application+\Application\Application.mdf;Integrated Security=True;User Instance=True</property>    
    <property name="dialect">NHibernate.Dialect.MySQL5Dialect</property>    
    <property name="show_sql">true</property>
  </session-factory>
</hibernate-configuration>

注意您使用的是 NHibernate.Driver.MySqlDataDriver driver_class 和 NHibernate.Dialect.MySQL5Dialect 方言，您需要将其更改为：

<?xml version="1.0" encoding="utf-8"?>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
  <session-factory>        
    <property name="proxyfactory.factory_class">NHibernate.ByteCode.Castle.ProxyFactoryFactory,NHibernate.ByteCode.Castle</property>
    <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>    
    <property name="connection.driver_class">NHibernate.Driver.SqlClientDriver</property>  
    <property name="connection.connection_string">Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\1\Desktop\Application+\Application\Application.mdf;Integrated Security=True;User Instance=True</property>    
    <property name="dialect">NHibernate.Dialect.MsSql2008Dialect</property> 
    <property name="show_sql">true</property>
  </session-factory>
</hibernate-configuration>

我假设您使用的是 MSSQL 2008，如果您使用的是 2005，请更改为 NHibernate.Dialect.MsSql2005Dialect

https://community.jboss.org/wiki/DatabasesSupportedByNHibernate?_sscc=t

【讨论】：

【解决方案2】：

您在 NH 配置中使用 MySqlDataDriver 作为 connection.driver_class。改为将其设置为 NHibernate.Driver.SqlClientDriver。

同样，将方言设置为 NHibernate.Dialect.MsSql2008Dialect

【讨论】：

【解决方案3】：

你试过没有User Instance的连接字符串吗 http://social.msdn.microsoft.com/Forums/en/sqldataaccess/thread/60889070-5c3c-4823-ae9f-1ed6e32b2ce8

示例：

Server=.\SQLExpress;AttachDbFilename=c:\mydbfile.mdf;Database=dbname; Trusted_Connection=Yes;

来源：http://www.connectionstrings.com/sql-server-2005

要使用用户实例功能，您需要在 SQL Server 上启用它。这是通过执行以下命令来完成的：sp_configure 'user instances enabled', '1'。

由于路径可能是绝对的或相对的，你也可以试试：

Data Source=.\SQLEXPRESS;AttachDbFilename=Application.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True

或

Data Source=.\SQLEXPRESS;AttachDbFilename=Application.mdf;Integrated Security=True;Connect Timeout=30

【讨论】：