一手资料来源于“开放工厂”,以下程序将会引用到一个核心文件UIShell.OSGi.dll
目前我对于OSGi这个框架的理解就是,主程序搜索并加载插件,以插件方式开放,便于扩展。
现在开始正式的旅程。
首先新建一个C#控制台应用程序(.NET 4.0)按照惯例取名HelloWorld
添加OSGi.NET的引用(上述dll文件),设置输出目录为bin(建议这样做)
这个程序的主函数(Main)中只做一件事,就是启动插件框架,完整代码如下
- using System;
- using UIShell.OSGi;
- namespace OSGi.HelloWorld
- {
- class Program
- {
- static void Main(string[] args)
- {
- using(BundleRuntime bdrt=new BundleRuntime())
- {
- Console.WriteLine("Start bundle...");
- bdrt.Start();
- bdrt.Stop();
- Console.WriteLine("Press any key to continue...");
- Console.ReadKey();
- }
- }
- }
- }
using System; using UIShell.OSGi; namespace OSGi.HelloWorld { class Program { static void Main(string[] args) { using(BundleRuntime bdrt=new BundleRuntime()) { Console.WriteLine("Start bundle..."); bdrt.Start(); bdrt.Stop(); Console.WriteLine("Press any key to continue..."); Console.ReadKey(); } } } }
现在,我们的各项功能可以通过插件扩展实现。
给两个示例吧,一个是打印消息,一个是弹出消息框,都很简单。
编写插件需要输出为dll形式,因此我们选择新建Class(类库),同样要添加OSGi.NET的引用
两个类的代码分别如下
- using System;
- using UIShell.OSGi;
- namespace PrintMessagePlugin
- {
- public class PrintMessage:IBundleActivator
- {
- public void Start(IBundleContext context)
- {
- Console.WriteLine("<Start> Hello World -- PrintMessage");
- }
- public void Stop(IBundleContext context)
- {
- Console.WriteLine("<Stop> See you next time. -- PrintMessage");
- }
- }
- }
using System; using UIShell.OSGi; namespace PrintMessagePlugin { public class PrintMessage:IBundleActivator { public void Start(IBundleContext context) { Console.WriteLine("<Start> Hello World -- PrintMessage"); } public void Stop(IBundleContext context) { Console.WriteLine("<Stop> See you next time. -- PrintMessage"); } } }
输出PrintMessage.dll
- using System.Windows.Forms;
- using UIShell.OSGi;
- namespace PopupMsgBoxPlugin
- {
- public class PopupMsgBox:IBundleActivator
- {
- public void Start(IBundleContext context)
- {
- MessageBox.Show("<Start> Hello World!","MsgBox");
- }
- public void Stop(IBundleContext context)
- {
- MessageBox.Show("<Stop> See you.","MsgBox");
- }
- }
- }
using System.Windows.Forms; using UIShell.OSGi; namespace PopupMsgBoxPlugin { public class PopupMsgBox:IBundleActivator { public void Start(IBundleContext context) { MessageBox.Show("<Start> Hello World!","MsgBox"); } public void Stop(IBundleContext context) { MessageBox.Show("<Stop> See you.","MsgBox"); } } }输出PopupmsgBox.dll
为了能让主程序搜索并识别插件信息,我们需要添加清单文件
方法之一是 【项目(右键)】-->【添加(新建项...)】-->【数据(XML文件)】
将*.xml命名为manifest.xml然后根据类库代码编写内容,分别如下
PrintMessage的manifest.xml
- <?xml version="1.0" encoding="utf-8" ?>
- <Bundle xmlns="urn:uiosp-bundle-manifest-2.0"
- SymbolicName="PrintMessagePlugin"
- Name="PrintMessagePlugin"
- Version="1.0.0.0"
- InitializedState="Active" >
- <Activator Type="PrintMessagePlugin.PrintMessage" />
- <Runtime>
- <Assembly Path="PrintMessage.dll" />
- </Runtime>
- </Bundle>
<?xml version="1.0" encoding="utf-8" ?> <Bundle xmlns="urn:uiosp-bundle-manifest-2.0" SymbolicName="PrintMessagePlugin" Name="PrintMessagePlugin" Version="1.0.0.0" InitializedState="Active" > <Activator Type="PrintMessagePlugin.PrintMessage" /> <Runtime> <Assembly Path="PrintMessage.dll" /> </Runtime> </Bundle>PopupMsgBox的manifest.xml
- <?xml version="1.0" encoding="utf-8" ?>
- <Bundle xmlns="urn:uiosp-bundle-manifest-2.0"
- SymbolicName="PopupMesgBoxPlugin"
- Name="PopupMsgBoxPlugin"
- Version="1.0.0.0"
- InitializedState="Active" >
- <Activator Type="PopupMsgBoxPlugin.PopupMsgBox" />
- <Runtime>
- <Assembly Path="PopupMsgBox.dll" />
- </Runtime>
- </Bundle>
<?xml version="1.0" encoding="utf-8" ?> <Bundle xmlns="urn:uiosp-bundle-manifest-2.0" SymbolicName="PopupMesgBoxPlugin" Name="PopupMsgBoxPlugin" Version="1.0.0.0" InitializedState="Active" > <Activator Type="PopupMsgBoxPlugin.PopupMsgBox" /> <Runtime> <Assembly Path="PopupMsgBox.dll" /> </Runtime> </Bundle>
然后将生成的*.dll及对应的*.xml清单拷贝到HelloWorld主程序对应的bin/Plugins目录(没有请新建)
其中bin就是HelloWorld主程序的exe输出目录
这是bin目录下的内容
这是bin/Plugins目录下的内容
这两个文件夹下的内容如下
执行主程序HelloWorld,运行结果如下
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