BizTalk动手实验（十一）自定义开发管道组件
更多内容请查看：BizTalk动手实验系列目录
1 课程简介
通过本课程熟悉自定义开始管道组件的流程、各组件接口的功能作用以及自定义管道。
本场景为开发一个消息ZIP压缩的发送管道组件。
2 准备工作
1. 熟悉管道组件各阶段组成
2. 下载Ionic.ZIP 组件（http://dotnetzip.codeplex.com/），使用如下代码部署到GAC中。
3 演示
1. 创建空解决方案ZipEncoder
2. 创建组件类库
3. 为类库添加签名
4. 添加自动部署GAC脚本，在项目属性Build Events的Post-build event command line里输入下列命令
5. 引用Microsoft.BizTalk.Pipeline组件（C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\PublicAssemblies\Microsoft.BizTalk.Pipeline.dll）及Ionic.Zip组件（需部署到GAC中）
6. 重命名Class1.cs为ZipEncoderComponent.cs
7. 拷贝以下代码替换ZipEncoder
View Code
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.IO;
using Microsoft.BizTalk.Message.Interop;
using Microsoft.BizTalk.Component.Interop;
using Ionic.Zip;
namespace ZipEncoderComponent
{
[ComponentCategory(CategoryTypes.CATID_PipelineComponent)]
[ComponentCategory(CategoryTypes.CATID_Encoder)]
[System.Runtime.InteropServices.Guid( " bb93175b-ef93-4277-b725-4e835d48a57b ")]
public class ZipEncoderComponent : IBaseComponent, IComponentUI, IPersistPropertyBag, IComponent
{
#region IBaseComponent
public string Description
{
get { return " zip encoder component "; }
}
public string Name
{
get { return " ZipEncoder "; }
}
public string Version
{
get { return " 1.0 "; }
}
#endregion
#region IComponentUI
public IntPtr Icon
{
get { return new IntPtr(); }
}
public System.Collections.IEnumerator Validate( object projectSystem)
{
return null;
}
#endregion
#region IPersistPropertyBag
private string _password;
private string _entryExtension;
public string Password
{
get { return _password; }
set { _password = value; }
}
public string EntryExtension
{
get { return _entryExtension; }
set { _entryExtension = value; }
}
public void GetClassID( out Guid classID)
{
classID = new Guid( " 62ab1278-2a73-49ea-832c-740e045a2d7d ");
}
public void InitNew()
{
}
public void Load(IPropertyBag propertyBag, int errorLog)
{
object val1 = null;
object val2 = null;
try
{
propertyBag.Read( " Password ", out val1, 0);
propertyBag.Read( " EntryExtension ", out val2, 0);
}
catch (ArgumentException)
{
}
catch (Exception ex)
{
throw new ApplicationException( " Error reading PropertyBag: " + ex.Message);
}
if (val1 != null)
_password = ( string)val1;
if (val2 != null)
_entryExtension = ( string)val2;
else
_entryExtension = " xml ";
}
public void Save(IPropertyBag propertyBag, bool clearDirty, bool saveAllProperties)
{
object val1 = ( object)_password;
object val2 = ( object)_entryExtension;
propertyBag.Write( " Password ", ref val1);
propertyBag.Write( " EntryExtension ", ref val2);
}
#endregion
#region IComponent
public IBaseMessage Execute(IPipelineContext pContext, IBaseMessage pInMsg)
{
IBaseMessagePart bodyPart = pInMsg.BodyPart;
if (bodyPart != null)
{
Stream originalStream = bodyPart.GetOriginalDataStream();
if (originalStream != null)
{
MemoryStream memStream = new MemoryStream();
using (ZipOutputStream zipOutputStream = new ZipOutputStream(memStream))
{
byte[] buffer = new Byte[ 1024];
zipOutputStream.CompressionLevel = Ionic.Zlib.CompressionLevel.BestCompression;
if (_password != null)
zipOutputStream.Password = _password;
if (_entryExtension != null)
if (_entryExtension.Length > 0)
_entryExtension = " . " + _entryExtension;
zipOutputStream.PutNextEntry(pInMsg.MessageID + _entryExtension);
int bytesRead = 1024;
while (bytesRead != 0)
{
bytesRead = originalStream.Read(buffer, 0, buffer.Length);
zipOutputStream.Write(buffer, 0, bytesRead);
}
}
byte[] buff = memStream.GetBuffer();
MemoryStream ms = new MemoryStream(buff);
ms.Position = 0;
pInMsg.BodyPart.Data = ms;
}
}
return pInMsg;
}
#endregion
}
}
8. 创建BizTalk项目BTSZipApp（配置应用名称、密钥）
9. 新建发送管道SendZipPipeline
10. 打开SendZipPipeline，在管道设计器右侧工具栏中右键点击“Choose Items”
11. 在BizTalk管道组件中点击浏览选择部署到GAC的管道组件（C:\Windows\Microsoft.NET\assembly\GAC_MSIL\ZipEncoderComponent\v4.0_1.0.0.0__9e391a29d05958dc）
12. 将ZipEncoder托拽到发送管道的Encode阶段
13. 部署BizTalk项目，重启BizTalk实例。
14. 新创建接收端口用于接收XML消息
15. 新建发送端口，用于发送ZIP文件，将管道选为新建的管道
16. 为发送端口添加订阅，以实现接收来自接收端口ReceivePort7的消息（该接收端口的名称请换为实际的名称）
17. 启动应用程序，将测试XML放到接收文件夹，在发送文件夹里可以看到ZIP文件
