我该如何修复 NHibernate.Cfg.HibernateConfigException

Question

我在做一个应用nebernate的例子时发现了一个错误，但我不知道是什么问题。看这里的代码，找到你要修改的部分。

我的数据库是 mysql，我更改了 cfg.xml、him.xml
错误：NHibernate.Cfg.HibernateConfigException：'解析配置时发生异常

MainWindow.cs

      private void GetStudent()
    {
        System.Collections.IList siteList;
        ISessionFactory factory =
        new NHibernate.Cfg.Configuration().Configure().BuildSessionFactory();

        using (ISession session = factory.OpenSession())
        {
            ICriteria sc = session.CreateCriteria(typeof(Student));
            siteList = sc.List();
            session.Close();
        }
        factory.Close();

        datagrid.ItemsSource = siteList;
    }

Stduent.cs

 public class Student
{
    private int grade;
    private int cclass;
    private string name;
    private int no;
    private string score;
    public virtual int Grade { 
        get { return grade; }
        set { grade = value; }
    }
    public virtual int Cclass
    {
        get { return cclass; }
        set { cclass = value; }
    }
    public virtual string Name
    {
        get { return name; }
        set { name = value; }
    }
    public virtual int No
    {
        get { return no; }
        set { no = value; }
    }

    public virtual string Score
    {
        get { return score; }
        set { score = value; }
    }
    public Student()
    {

    }
}

Student.hbm.xml

    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
  <class name="WpfStudent.Student" dynamic-insert="true" dynamic-update="true" table="student">
    <id name="No" column="no" type="int">
      <generator class="increment"></generator>
    </id>
    <property name="Grade" column="grade" type="int"></property>
    <property name="Cclass" column="cclass" type="int"></property>
    <property name="Name" column="name" type="String"></property>
    <property name="Score" column="score" type="String"></property>
  </class>
</hibernate-mapping>

休眠。cfg.xml

  <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">

  <!-- an ISessionFactory instance -->
  <session-factory>

    <!-- properties -->
    <property name="connection.provider">NHibernate.Connection.DriverConnectionProvider</property>
    <property name="connection.driver_class">NHibernate.Driver.MySqlDataDriver</property>
    <property name="connection.connection_string">server=localhost;user id=root;persistsecurityinfo=True;database=student;allowuservariables=True</property>
  <property name="dialect">NHibernate.Dialect.MySQL55InnoDBDialect</property>

    <!-- mapping files -->
    <mapping resource="WpfStudent.Student.hbm.xml" assembly="WpfStudent" />
  </session-factory>

</hibernate-configuration>

MainWindow.xaml

<Window x:Class="WpfStudent.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfStudent"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <DockPanel LastChildFill="False">
        <Border DockPanel.Dock="Left" Width="610"  Padding="10">
            <DataGrid Width="590" Height="400" HorizontalAlignment="Left" Name="studentDataGrid" ColumnWidth="*" AutoGenerateColumns="False" >
                <DataGrid.Columns>
                    <DataGridTextColumn Header="grade" Binding="{Binding grade,NotifyOnTargetUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
                    <DataGridTextColumn Header="class" Binding="{Binding cclass, NotifyOnTargetUpdated=True,UpdateSourceTrigger=PropertyChanged}" Foreground="Black"/>
                    <DataGridTextColumn Header="name" Binding="{Binding name, NotifyOnTargetUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
                    <DataGridTextColumn Header="no" Binding="{Binding no, NotifyOnTargetUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
                    <DataGridTextColumn Header="score" Binding="{Binding score, NotifyOnTargetUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>

                </DataGrid.Columns>
            </DataGrid>
        </Border>
        <Border DockPanel.Dock="Right" Width="180"  Padding="0">
            <Grid >
                <Grid.RowDefinitions>
                    <RowDefinition Height="25*"/>
                    <RowDefinition Height="25*"/>
                    <RowDefinition Height="25*"/>
                    <RowDefinition Height="25*"/>
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="15*"/>
                    <ColumnDefinition Width="35*"/>
                    <ColumnDefinition Width="15*"/>
                </Grid.ColumnDefinitions>
                <Button x:Name="ReadBtn" Content="READ" VerticalAlignment="Center" Height="25" Margin="10,15,10,15"  Grid.Row="0" Grid.Column="1" Click="ReadBtn_Click"/>
                <Button x:Name="InsertBtn" Content="INSERT" VerticalAlignment="Center" Height="25" Margin="10"  Grid.Row="1" Grid.Column="1" Click="InsertBtn_Click"/>
                <Button x:Name="UpdateBtn" Content="UPDATE" VerticalAlignment="Center" Height="25" Margin="10"  Grid.Row="2" Grid.Column="1" Click="UpdateBtn_Click"/>
                <Button x:Name="DeleteBtn" Content="DELETE" VerticalAlignment="Center" Height="25" Margin="10"  Grid.Row="3" Grid.Column="1" Click="DeleteBtn_Click" />
            </Grid>
        </Border>


    </DockPanel>
</Window>

Answer 1

name属性value(最后位置)。而不是这个：

<property name ="connection.provider ">...
<property name ="dialect ">...
<property name ="connection.driver_class ">...
<property name ="connection.connection_string ">..

我们需要：

<property name ="connection.provider">...
<property name ="dialect">...
<property name ="connection.driver_class">...
<property name ="connection.connection_string">..

NOTE: also, in VS, add xml schema into play "nhibernate-configuration.xsd" and for mapping files "nhibernate-mapping.xsd" ... that will reveal lot of issues even before compilation

Answer 2

因为你的数据库是 MySql 你应该使用

<property name="connection.driver_class">
  NHibernate.Driver.MySqlDataDriver
</property>
<property name="dialect">
  NHibernate.Dialect.MySQL55InnoDBDialect
</property>

参见 documentation Table 3.3。 NHibernate SQL Dialects 用于 MySql 的可能方言。另外 Data Source= 在你的 connection.connection_string 看起来很奇怪。我会删除这个字符串。

如果尚未完成，您需要在项目中安装和引用 Nuget 包 MySql.Data。

我该如何修复 NHibernate.Cfg.HibernateConfigException

how can I fix NHibernate.Cfg.HibernateConfigException

c#

mysql

nhibernate