化零为整WCF(7) - 消息处理(使用消息传输优化机制 - MTOM)

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化零为整WCF(7) - 消息处理(使用消息传输优化机制 - MTOM)

作者：webabcd


介绍
WCF(Windows Communication Foundation) - 消息处理：MTOM(Message Transmission Optimization Mechanism) - 消息传输优化机制。本文以web方式上传大文件为例。


示例
1、服务
IMtom.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ServiceModel;
using System.IO;

namespace WCF.ServiceLib.Message
{
         ///

         /// IMtom接口
         ///

        [ServiceContract]
         public interface IMtom
        {
                 ///

                 /// 上传文件
                 ///

                 /// "path">文件目标路径
                 /// "fileData">文件字节数组
                [OperationContract]
                 void UploadFile( string path, byte[] fileData);
        }
}

 

Mtom.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ServiceModel;
using System.IO;

namespace WCF.ServiceLib.Message
{
         ///

         /// Mtom类
         ///

         public class Mtom : IMtom
        {
                 ///

                 /// 上传文件
                 ///

                 /// "path">文件目标路径
                 /// "fileData">文件字节数组
                 public void UploadFile( string path, byte[] fileData)
                {
                        FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None);
                        fs.Write(fileData, 0, fileData.Length);
                        fs.Flush();
                        fs.Close();
                }
        }
}

 

 

2、宿主
Mtom.svc

<%@ ServiceHost Language="C#" Debug="true" Service="WCF.ServiceLib.Message.Mtom" %>

 

Web.config

    
        
            
            
            
                
                
                
                
                
            
        
        
            
                
                    
                    
                    
                
            
        
        
            
                
                
                
                
                    
                    
                
            
        
    

 

 

3、客户端
Mtom.aspx

<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Mtom.aspx.cs"
        Inherits="Message_Mtom" Title="消息处理(使用消息传输优化机制 - MTOM)" %>




        

                MTOM(Message Transmission Optimization Mechanism) - 消息传输优化机制
        

        

                

                        
• 可以指定用 MTOM 还是 Text 对 SOAP 消息编码

                        
• 抓soap消息的时候可以用tcpTrace

                        
• 用17,766,901字节大小的文件测试：Text编码（soap大小：31,591,929字节）；MTOM编码（soap大小：23,696,066字节）

                

        

        

                源文件：
                
                 
                上传路径：
                
                 
                
        

 

Mtom.aspx.cs

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.ServiceModel.Channels;
using System.IO;

public partial class Message_Mtom : System.Web.UI.Page
{
         protected void Page_Load( object sender, EventArgs e)
        {

        }

         protected void btnUpload_Click( object sender, EventArgs e)
        {
                var proxy = new MessageSvc.Mtom.MtomClient();

                var length = file.PostedFile.ContentLength;
                var bytes = new byte[length];
                file.PostedFile.InputStream.Read(bytes, 0, length);

                 try
                {
                        proxy.UploadFile(
                                txtDestination.Text + Path.GetFileName(file.PostedFile.FileName),    
                                bytes);
                        Page.ClientScript.RegisterStartupScript( typeof(Page), "js", "alert('上传成功');", true);
                }
                 catch (Exception ex)
                {
                        Page.ClientScript.RegisterStartupScript( typeof(Page), "js", "alert('" + ex.ToString() + "');", true);
                }

                proxy.Close();
        }
}

 

Web.config

    
        
            
            
            
            
            
            
            
        
        
            
                
                
                
                    
                    
                
            
        
        
            
                
                    
                    
                
            
        
    

 

运行结果：
上传文件后提示上传成功 


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