IronPython 承载和消费WCF服务

谁借莪１个温暖的怀抱￠ 2022-09-30 00:35 117阅读 0赞

“IronPython 2.6提供了新特性clrtype，允许程序员用纯IronPython代码提供property、attribute等CLR类型信息。这样IronPython代码就可以无缝地与Sliverlight、WCF等框架集成。”我们就用clrtype来看看怎么承载WCF服务和消费WCF服务。WCF的契约需要定义接口，这是目前IronPython 尚未支持的功能，所以我们先用C\#定义个一个WCF的契约：

using System;  
using System.Collections.Generic;  
using System.ServiceModel;

namespace TestServiceInterface  
\{  
///

/// Description of MyClass.  
///    
\[ServiceContract\]  
public interface ImyService  
\{  
\[OperationContract\]  
string GetData(int value);

编译成一个程序集TestServiceInterface.dll, 然后在IronPython中实现WCF服务myWcfService.myService，代码如下：

import clr  
import clrtype  
clr.AddReference('System.ServiceModel')  
clr.AddReference('TestServiceInterface')  
from TestServiceInterface import ImyService

from System import Console, Uri  
from System.ServiceModel import (ServiceHost, BasicHttpBinding, ServiceBehaviorAttribute, InstanceContextMode)

ServiceBehavior = clrtype.attribute(ServiceBehaviorAttribute)

class myService(ImyService):

\_\_metaclass\_\_ = clrtype.ClrClass

\_clrnamespace = "myWcfService"

\_clrclassattribs = \[ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)\]

def GetData(self, value):

return r"IronPython WCF服务: 你的输入内容是: %s" % value

sh = ServiceHost(myService() ,Uri("[http://localhost:7000/myWcfService%22][http_localhost_7000_myWcfService_22] ) )

sh.AddServiceEndpoint(

clr.GetClrType(ImyService),

BasicHttpBinding(),  
"")

sh.Open()

Console.WriteLine("Press to terminate/n")  
Console.ReadLine()

sh.Close()

这里用到了一个clrtype模块, 代码参加IronPython的Sample工程，可以从这里下载：[http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=12482][http_ironpython.codeplex.com_Release_ProjectReleases.aspx_ReleaseId_12482] ，第一个例子就是ClrType ，从这里拷贝出来放到我们的py目录下。类myService 必须加一个attribute *InstanceContextMode.Single* ServiceBehavior 。

我们再来写个测试的客户端代码：

import clr

clr.AddReference('System.ServiceModel')

from System import Console  
import System.ServiceModel

clr.AddReference('TestServiceInterface')

from TestServiceInterface import ImyService

mycf = System.ServiceModel.ChannelFactory\[ImyService\](

System.ServiceModel.BasicHttpBinding(),

System.ServiceModel.EndpointAddress("[http://localhost:7000/myWcfService%22))][http_localhost_7000_myWcfService_22 1]

wcfcli = mycf.CreateChannel()

print r"IronPython WCF 服务的返回结果是:/n%s" % wcfcli.GetData(11)

Console.WriteLine("Press to terminate/n")  
Console.ReadLine()

运行起来可以得到的结果如下：

[![image][]][image 1]

这样一个基本的WCF服务示例就完成了，示例有个问题是没法使用配置文件来存储WCF的配置信息，只能通过代码方式对WCF服务进行配置。

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[http_localhost_7000_myWcfService_22]: http://localhost:7000/myWcfService%22
[http_ironpython.codeplex.com_Release_ProjectReleases.aspx_ReleaseId_12482]: http://ironpython.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=12482
[http_localhost_7000_myWcfService_22 1]: http://localhost:7000/myWcfService%22%29%29
[image]: /images/20220708/467bdfed7eb242ae8e7932b3e9d81cd1.png
[image 1]: http://images.cnblogs.com/cnblogs_com/shanyou/WindowsLiveWriter/IronPythonWCF_120CD/image_2.png
[Link 1]: http://shanyou.cnblogs.com/