NHibernate的简单例子

NHibernate的简单例子

@(编程)

目录

• NHibernate的简单例子
  • 1. 需要的dll
  • 2.需要安装的程序
  • 3. 数据库SQL
  • 4. 实体与映射文件
  • 5. DAO
  • 6. BLL
  • 7.配置文件
  • 8.调用代码
  • 9.下载地址

因为项目需求，搭了一个NHibernate的例子，中间遇到了一些问题，通过各种方法解决了，在这里记录一下最后的结果。

1. 需要的dll

Common.Logging.dll 		     1.2.0.0
Common.Logging.Log4Net.dll   1.2.0.2
log4net.dll                  1.2.10.0
MySql.Data.dll               6.9.8.0
NHibernate.dll               3.0.0.400
Spring.Aop.dll               1.3.1.40711
Spring.Core.dll              1.3.1.40711
Spring.Data.dll              1.3.1.40711
Spring.Data.NHibernate30.dll  1.3.1.40711

2.需要安装的程序

MySQL-connector-net

如果不安装，则报错，大致如下：

Error thrown by a dependency of object 'MySql-5.0' defined in 'assembly [Spring.Data, Version=1.1.2.20125, Culture=neutral, PublicKeyToken=65e474d141e25e07], resource [Spring.Data.Common.dbproviders.xml]' :
2.Unsatisfied dependency expressed through constructor argument with index 2 of type [System.Type] :
3.Could not convert constructor argument value [MySql.Data.MySqlClient.MySqlConnection, MySql.Data, Version=5.0.7.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d] to required type [System.Type] :
4.Cannot convert property value of type [System.String] to required type [System.Type] for property ''.
5.while resolving 'constructor argument with name dbmetadata' to '(inner object)' defined in 'assembly [Spring.Data, Version=1.1.2.20125, Culture=neutral, PublicKeyToken=65e474d141e25e07], resource [Spring.Data.Common.dbproviders.xml]'

另外这个版本一定要与上面的mysql.data.dll版本相同。

3. 数据库SQL

CREATE TABLE `account` (
  `id` varchar(45) NOT NULL,
  `name` varchar(45) DEFAULT NULL,
  `code` varchar(45) DEFAULT NULL,
  `balance` double DEFAULT NULL,
  `exchange` varchar(45) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

4. 实体与映射文件

Account

namespace NHibernateDemo
{
    /// <summary>
    /// 用户账户
    /// </summary>
    public class Account
    {
        public virtual string Id { get; set; }
        /// <summary>
        /// 账户名称
        /// </summary>
        public virtual string Name { get; set; }
        /// <summary>
        /// 账户编码
        /// </summary>
        public virtual string Code { get; set; }
        /// <summary>
        /// 账户当前余额
        /// </summary>
        public virtual double Balance { get; set; }
        /// <summary>
        /// 交易所
        /// </summary>
        public virtual string Exchange { get; set; }
    }
}

Account.hbm.xml

要设置为嵌入的资源

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="NHibernateDemo">
  <class name="NHibernateDemo.Account" table="account" lazy="false" >
    <id name="Id" unsaved-value="null" column="id" type="string" />
    <property name="Name"  column="name"  length="40"  not-null="true" />
    <property name="Code" column="code" length="30" not-null="false"/>
    <property name="Balance" column="balance" length="30"  not-null="false"/>
    <property name="Exchange" column="exchange"  length="60"  not-null="false"/>
  </class>
</hibernate-mapping>

5. DAO

IAccountDao

using System.Collections.Generic;

namespace NHibernateDemo
{
    public interface IAccountDao
    {
        IList<Account> GetAll();
    }
}

AccountDaoImpl

using Spring.Data.NHibernate;
using System;
using System.Collections.Generic;

namespace NHibernateDemo
{
    [Spring.Stereotype.Repository]
    public class AccountDaoImpl : IAccountDao
    {
        public HibernateTemplate HibernateTemplate { set; get; }

        public IList<Account> GetAll()
        {
            try
            {
                Account entity = new Account();
                entity.Id = Guid.NewGuid().ToString();
                entity.Balance = 0;
                entity.Code = "a";
                entity.Exchange = "b";
                entity.Name = "c";
                this.HibernateTemplate.Save(entity);
                var result = this.HibernateTemplate.LoadAll(typeof(Account));

                foreach (Account item in result)
                {
                    Console.WriteLine(item.Name);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }

            return null;
        }
    }
}

6. BLL

SpringFactory

using NHibernate;

namespace NHibernateDemo
{
    public sealed class SpringFactory
    {
        public static IAccountDao GetAccountDao()
        {
            return SpringHelper<IAccountDao>.GetObject("AccountDao");
        }

    }
}

SpringHelper

namespace NHibernateDemo
{
    using Common.Logging;
    using Spring.Context;
    using Spring.Context.Support;
    using System;
    using System.Reflection;

    public sealed class SpringHelper<T>
        where T : class
    {

        #region Static Fields

        private static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        #endregion

        #region Public Methods and Operators

        /// <summary>
        ///     传入objId 通过Spring得到对应实体
        /// </summary>
        /// <param name="objId"></param>
        /// <param name="withLog"></param>
        /// <returns></returns>
        public static T GetObject(string objId, bool withLog = true)
        {
            if (string.IsNullOrEmpty(objId))
            {
                return default(T);
            }
            try
            {
                IApplicationContext ctx = ContextRegistry.GetContext();
                return ctx.GetObject(objId) as T;
            }
            catch (Exception ex)
            {
                if (withLog)
                {
                    Log.Error("", ex);
                }
                return default(T);
            }
        }

        #endregion
    }
}

7.配置文件

App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <sectionGroup name="spring">
      <section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
      <section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core"/>
    </sectionGroup>
    <sectionGroup name="common">
      <section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging"/>
    </sectionGroup>
  </configSections>

  <common>
    <logging>
      <factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4Net">
        <arg key="configType" value="FILE-WATCH"/>
        <arg key="configFile" value="config/Log4Net.xml"/>
      </factoryAdapter>
    </logging>
  </common>

  <spring>
    <context>
      <resource uri="config/ApplicationContext.xml"/>
    </context>
  </spring>
</configuration>

ApplicationContext.xml

<?xml version="1.0" ?>
<objects default-autowire="byName" default-lazy-init="true" xmlns:db="http://www.springframework.net/database" xmlns:tx="http://www.springframework.net/tx" xmlns="http://www.springframework.net">
  <!--描述-->
  <description>
    数据访问的配置信息 包括：DbProvider NHibernate
  </description>

  <!-- 通过主应用程序的上下文配置文件引用 -->
  <object type="Spring.Objects.Factory.Config.PropertyPlaceholderConfigurer, Spring.Core">
    <property name="ConfigSections" value="spring/databaseSettings"/>
  </object>

  <object id="HibernateTransactionManager" type="Spring.Data.NHibernate.HibernateTransactionManager, Spring.Data.NHibernate30">
    <property name="DbProvider" ref="DbProvider"/>
    <property name="SessionFactory" ref="NHibernateSessionFactory"/>
  </object>

  <object id="HibernateTemplate" type="Spring.Data.NHibernate.HibernateTemplate">
    <property name="SessionFactory" ref="NHibernateSessionFactory"/>
    <property name="TemplateFlushMode" value="Auto"/>
    <property name="CacheQueries" value="true"/>
  </object>

  <!-- 数据库的配置 -->
  <db:provider connectionString="Data Source=localhost;User Id=root;Password=password;database=test" id="DbProvider" provider="MySql-5.1"/>

  <!-- NHibernate 配置 -->

  <!-- 可以通过 name 为其指定别名 name="SessionFactory" -->
  <object id="NHibernateSessionFactory" type="Spring.Data.NHibernate.LocalSessionFactoryObject,Spring.Data.NHibernate30">

    <!-- 关于数据库连接的配置，直接使用 DbProvider 中的设置，这样，不需要为 Hibernate 再提供连接串和驱动 -->
    <property name="DbProvider" ref="DbProvider"/>

    <!-- 包含有映射文件的程序集，需要分析的hbm程序集名称 -->
    <property name="MappingAssemblies">
      <list>
        <value>NHibernateDemo</value>
      </list>
    </property>

    <!-- 其他的参数 -->
    <property name="HibernateProperties">
      <dictionary>
        <!-- 方言 -->
        <entry key="dialect" value="NHibernate.Dialect.MySQLDialect"/>
        <entry key="connection.driver_class" value="NHibernate.Driver.MySqlDataDriver"/>
        <entry key="use_proxy_validator" value="false"/>
        <entry key="show_sql" value="true"/>
      </dictionary>
    </property>

    <!-- 必须增加此项说明，与 Spring 的声明式事务集成 -->
    <property name="ExposeTransactionAwareSessionFactory" value="true"/>

  </object>
  <object id="AccountDao" type="NHibernateDemo.AccountDaoImpl,NHibernateDemo">
    <property name="HibernateTemplate" ref="HibernateTemplate"></property>
  </object>
</objects>

Log4Net.xml

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net, Version=1.2.11.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a"/>
  </configSections>
  <log4net>
    <!-- Console部分log输出格式的设定 -->
    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level [%file] [ %line行 ] - %message%newline"/>
      </layout>
    </appender>

    <!-- 日志文件部分log输出格式的设定 -->
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
      <file value="log.txt"/>
      <appendToFile value="true"/>
      <maxSizeRollBackups value="10"/>
      <maximumFileSize value="1MB"/>
      <rollingStyle value="Size"/>
      <staticLogFileName value="true"/>
      <layout type="log4net.Layout.PatternLayout">
        <header value=""/>
        <footer value=""/>
        <ConversionPattern value="%date %-5level [%file] [%line行] - %message%newline"/>
      </layout>
    </appender>
    <!-- Setup the root category, add the appenders and set the default level -->
    <root>
      <level value="ALL"/>
      <appender-ref ref="ConsoleAppender"/>
      <appender-ref ref="RollingLogFileAppender"/>
    </root>
  </log4net>
</configuration>

8.调用代码

using System;

namespace NHibernateDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            IAccountDao dao = SpringFactory.GetAccountDao();
            dao.GetAll();
            Console.Read();
        }
    }
}

9.下载地址

http://files.cnblogs.com/files/wardensky/NHibernateDemo.zip