NET 插件系统框架设计（二）使用对象序列化实现自定义配置文件管理

使用对象序列化实现xml操作

NET 插件系统框架设计（一）框架整体构想

一、为什么要这样做

问题：在程序开发中，经常会涉及对xml的操作，在c#中常用的方法有两种

1. xpath解析

2. XmlDocument解析

在解析时什么很麻烦，c#提供了xml序列化的方法，非常方便进实现xml和以象间的转换，在插件系统框架程序中，实现插件的管理配置，使用序列化确实方便了不少，扩展性非常方便，有些朋友会提到性能的问题，在这个系统中，结合缓存问题不是问题。

二、怎么样来做

概况

首先来看类结构图：

clip_image002[1]

类名	说明	备注
FrameworkConfiguraconfigManager	配置文件管理类	实现config管理，load、save
FrameworkConfiguraconfig	配置文件类
PluginSettings	插件配置文件集合适配器	利用索引实现集合访问
PluginSetting	插件配置文件	例如UserCenterPlugin
AssemblyFile	插件对应配置文件
AppSettings	应用程序配置集合适配器	得 key value
AppSetting	应用程序配置

本文主要是实现对象读取与保存，类结构就不做过多分析，主要看FrameworkConfiguration 、FrameworkConfigurationManager类

clip_image004[1]

FrameworkConfigurationManager实现FrameworkConfiguration 保存与读取，FrameworkConfiguration包含了AppSettings对象及PluginSettiongs对象，后续还可以扩展。

关键代码

//名称空间引入

using System.IO;

using System.Xml.Serialization;

//指定xml序列化属性根结点名间

[Serializable]

[XmlRootAttribute("configuration", Namespace = "http://www.codemarks.net ")]

public class FrameworkConfiguration

//序列化保存

[XmlElementAttribute(ElementName = "pluginSetting", IsNullable = false)]

public List<PluginSetting> Items

{

get { return _items; }

set { _items = value; }

}

public void Save()

{

FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write);

XmlSerializer ser = new XmlSerializer(typeof(FrameworkConfiguration), new Type[] {

typeof(PluginSettings),

typeof(PluginSetting),

typeof(AssemblyFile),

});

ser.Serialize(fs, this.config);

fs.Close();

}

//序列化读取

public void Load()

{

//不存配置文件

if (!File.Exists(fileName))

{

this.config = new FrameworkConfiguration();

return;

}

FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);

XmlSerializer ser = new XmlSerializer(typeof(FrameworkConfiguration), new Type[] {

typeof(PluginSetting),

typeof(PluginSettings),

typeof(AssemblyFile)

});

this.config = (FrameworkConfiguration)ser.Deserialize(fs);

fs.Close();

}

在Test类中读到插件对象

FrameworkConfigurationManager.Instance.Config.PluginSettings["UserCenter"]; // UserCenter为插件名称

结果

<?xml version="1.0" encoding="utf-8"?>

<assembly name="CodeMarks.Framework.Plugin.Adapter.User" descript="">cn.CodeMarks.Framework.Plugin.Adapter.UserAdapter</assembly>

</assemblys>

</plugin>

</pluginSettings>

</appSettings>

</configuration>

三、问题及其它

四、完整代码

//FrameworkConfiguraconfigManager完成代码
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Xml.Serialization;
namespace cn.CodeMarks.Framework.Plugin
{
    public class FrameworkConfigurationManager
    {
        private static FrameworkConfigurationManager instance = null;
        public static FrameworkConfigurationManager Instance
        {
            get
            {
                if (FrameworkConfigurationManager.instance == null)
                {
                    FrameworkConfigurationManager.instance = new FrameworkConfigurationManager();
                }
                return FrameworkConfigurationManager.instance;
            }
        }
        private FrameworkConfiguration config = new FrameworkConfiguration();
        public FrameworkConfiguration Config
        {
            get { return config; }
            set { config = value; }
        }
        public void Save()
        {
            FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write);
            XmlSerializer ser = new XmlSerializer(typeof(FrameworkConfiguration), new Type[] {
                typeof(PluginSettings),
                typeof(PluginSetting),
                typeof(AssemblyFile),
                
            });
            ser.Serialize(fs, this.config);
            fs.Close();
        }
        private string fileName = "FrameworkConfig.xml";
        public void Load()
        {
            //不存配置文件
            if (!File.Exists(fileName))
            {
                this.config = new FrameworkConfiguration();
                return;
            }
            FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
            XmlSerializer ser = new XmlSerializer(typeof(FrameworkConfiguration), new Type[] {
                typeof(PluginSetting),
                typeof(PluginSettings),
                typeof(AssemblyFile)
            });
            this.config = (FrameworkConfiguration)ser.Deserialize(fs);
            fs.Close();
        }
        public void TestData()
        {
            PluginSetting ps1 = new PluginSetting();
            ps1.PluginName = "UserPlugin";
            ps1.Author = "codemarks";
            ps1.Descript = " ";
            ps1.Version = "1.0";
            ps1.WebRoot = "/plugin/user/webroot/";
            AssemblyFile af1 = new AssemblyFile();
            af1.Name = "CodeMarks.Framework.Plugin.Adapter.User";
            af1.AdapterClassName = "CodeMarks.Framework.Plugin.Adapter.User.UserAdapter";
            ps1.Items.Add(af1);
            this.config.PluginSettings.AddPlugin(ps1);
            PluginSetting ps = new PluginSetting();
            ps.PluginName = "UserPlugin2";
            ps.Author = "codemarks2";
            ps.Descript = " ";
            ps.Version = "1.0";
            ps.WebRoot = "/plugin/user/webroot/";
            AssemblyFile af = new AssemblyFile();
            af.Name = "CodeMarks.Framework.Plugin.Adapter.User2";
            af.AdapterClassName = "CodeMarks.Framework.Plugin.Adapter.User.UserAdapter";
            ps.Items.Add(af);
            this.config.PluginSettings.AddPlugin(ps);
            this.config.AppSettings.Items.Add(new AppSetting("conn", ".\\nbaqn"));
            this.config.AppSettings.Items.Add(new AppSetting("config", "frame.config"));
            this.config.AppSettings.Items.Add(new AppSetting("catch", "sql"));
        }
    }
}
//FrameworkConfiguraconfig完整代码
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using System.IO;
namespace cn.CodeMarks.Framework.Plugin
{
    [Serializable]
    [XmlRootAttribute("configuration", Namespace = "http://www.codemarks.net ", IsNullable = false)]
    public class FrameworkConfiguration
    {
        public FrameworkConfiguration()
        {
            _PluginSettings = new PluginSettings();
            _appSettings = new AppSettings();
        }
        private PluginSettings _PluginSettings;
        /// <summary>
        /// 插件配置
        /// </summary>
       
        public PluginSettings PluginSettings
        {
            get { return _PluginSettings; }
            set { _PluginSettings = value; }
        }
        private AppSettings _appSettings;
        public AppSettings AppSettings
        {
            get { return _appSettings; }
            set { _appSettings = value; }
        }
    }
}
//PluginSettings完整代码
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml.Serialization;
namespace cn.CodeMarks.Framework.Plugin
{
    [Serializable]
    public class PluginSettings
    {
        public PluginSettings()
        {
            _items = new List<PluginSetting>();
        }
        private List<PluginSetting> _items;
       
        [XmlElementAttribute(ElementName = "pluginSetting", IsNullable = false)]
        public List<PluginSetting> Items
        {
            get { return _items; }
            set { _items = value; }
        }
        public PluginSetting this[string pluginName]
        {
            get
            {
                return GetPlugin(pluginName);
            }
        }
        /// <summary>
        /// 根据插件名称获取插件
        /// </summary>
        /// <param name="plugName"></param>
        /// <returns></returns>
        public PluginSetting GetPlugin(string plugName)
        {
            PluginSetting ret = null;
            foreach (PluginSetting plug in Items)
            {
                if (plugName == plug.PluginName)
                {
                    ret = plug;
                    break;
                }
            }
            return ret;
        }
        /// <summary>
        /// 添加插件成功返回true
        /// </summary>
        /// <param name="plugin"></param>
        /// <returns></returns>
        public bool AddPlugin(PluginSetting plugin)
        {
            bool ret = false;
            foreach (PluginSetting plug in Items)
            {
                if (plugin.PluginName == plug.PluginName)
                {
                    ret = true;
                    break;
                }
            }
            if (!ret)
            {
                Items.Add(plugin);
            }
            return ret;
        }
        /// <summary>
        /// 移除插件，成功返回true
        /// </summary>
        /// <param name="pluginName"></param>
        /// <returns></returns>
        public bool ReMovePlugin(string pluginName)
        {
            bool ret = false;
            foreach (PluginSetting plug in Items)
            {
                if (pluginName == plug.PluginName)
                {
                    Items.Remove(plug);
                    ret = true;
                    break;
                }
            }
            return ret;
        }
    }
//PluginSetting完整代码
    [Serializable]
    public class PluginSetting
    {
        public PluginSetting()
        {
            _items = new List<AssemblyFile>();
        }
        private string _pluginName;
        /// <summary>
        /// 插件名称
        /// </summary>
        [XmlAttribute("name")]
        public string PluginName
        {
            get { return _pluginName; }
            set { _pluginName = value; }
        }
        private string _descript;
        /// <summary>
        /// 插件描述
        /// </summary>
        [XmlAttribute("descript")]
        public string Descript
        {
            get { return _descript; }
            set { _descript = value; }
        }
        private string _version;
        /// <summary>
        /// 插件版本
        /// </summary>
        [XmlAttribute("version")]
        public string Version
        {
            get { return _version; }
            set { _version = value; }
        }
        private string _author;
        /// <summary>
        /// 插件作者
        /// </summary>
        [XmlAttribute("author")]
        public string Author
        {
            get { return _author; }
            set { _author = value; }
        }
        private string webRoot;
        /// <summary>
        /// 页面路径
        /// </summary>
        [XmlAttribute("webroot")]
        public string WebRoot
        {
            get { return webRoot; }
            set { webRoot = value; }
        }
        private List<AssemblyFile> _items;
        [XmlArrayAttribute("assemblyFiles")]
        public List<AssemblyFile> Items
        {
            get { return _items; }
            set { _items = value; }
        }
    }
}
//AssemblyFile完整代码
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml.Serialization;
namespace cn.CodeMarks.Framework.Plugin
{
    [Serializable]
    public class AssemblyFile
    {
        string name;
        [XmlAttribute("name")]
        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        string descript;
        [XmlAttribute("descript")]
        public string Descript
        {
            get { return descript; }
            set { descript = value; }
        }
        string adapterClassName;
        [XmlAttribute("adapter")]
        public string AdapterClassName
        {
            get { return adapterClassName; }
            set { adapterClassName = value; }
        }
    }
}
//AppSettings完整代码
//AppSetting完整代码
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
namespace cn.CodeMarks.Framework.Plugin
{
    public class AppSettings
    {
        public AppSettings()
        {
            _items = new List<AppSetting>();
        }
        private List<AppSetting> _items;
        [XmlElementAttribute(ElementName = "add", IsNullable = false)]
        public List<AppSetting> Items
        {
            get { return _items; }
            set { _items = value; }
        }
        /// <summary>
        /// 根据key获取配置对象
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public AppSetting this[string key]
        {
            get
            {
                AppSetting ret = null;
                foreach (AppSetting app in Items)
                {
                    if (app.Key == key)
                    {
                        ret = app;
                        break;
                    }
                }
                return ret;
            }
        }
        public AppSetting this[AppSetting appSetting]
        {
            set
            {
                bool isAlready = false;
                foreach (AppSetting app in Items)
                {
                    if (app.Key == appSetting.Key)
                    {
                        isAlready = true;
                        break;
                    }
                }
                if (!isAlready)
                {
                    Items.Add(appSetting);
                }
            }
        }
    }
    /// <summary>
    /// 应用程序设置
    /// </summary>                                             
    public class AppSetting
    {
        public AppSetting()
        {
        }
        public AppSetting(string _key, string _value)
        {
            this.Key = _key;
            this.Value = _value;
        }
        private string _key;
        [XmlAttribute("key")]
        public string Key
        {
            get { return _key; }
            set { _key = value; }
        }
        private string value;
        [XmlAttribute("value")]
        public string Value
        {
            get { return this.value; }
            set { this.value = value; }
        }
    }
}
//生成的xml文件
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <pluginSettings>
    <plugin name="UserPlugin" author="codemarks" descript=" " version="1.0"   webroot="/plugin/user/web/">
      <assemblys>
        <assembly name="CodeMarks.Framework.Plugin.Adapter.User"  descript="">cn.CodeMarks.Framework.Plugin.Adapter.UserAdapter</assembly>
        <assembly name="CodeMarks.Framework.Plugin.AddIn.User"  descript=""/>
        <assembly name="CodeMarks.Framework.Plugin.Model.User"   descript=""/>
        <assembly name="CodeMarks.Framework.Plugin.View.User"   descript=""/>
      </assemblys>
    </plugin>
  </pluginSettings>
  <appSettings>
    <add key="pluginRoot" value="/Plugin/"></add>
  </appSettings>
</configuration>

NET 插件系统框架设计（一）框架整体构想

更多:http://www.al0574.com

posted on 2009-11-23 11:29 yaoshiyou 阅读(1658) 评论(0) 编辑收藏举报

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