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
{
        /// <summary>
        /// IMtom接口
        /// </summary>
        [ServiceContract]
        public interface IMtom
        {
                /// <summary>
                /// 上传文件
                /// </summary>
                /// <param name="path">文件目标路径</param>
                /// <param name="fileData">文件字节数组</param>
                [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
{
        /// <summary>
        /// Mtom类
        /// </summary>
        public class Mtom : IMtom
        {
                /// <summary>
                /// 上传文件
                /// </summary>
                /// <param name="path">文件目标路径</param>
                /// <param name="fileData">文件字节数组</param>
                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

<?xml version="1.0"?>
<configuration>
    <system.serviceModel>
        <services>
            <!--name - 提供服务的类名-->
            <!--behaviorConfiguration - 指定相关的行为配置-->
            <service name="WCF.ServiceLib.Message.Mtom" behaviorConfiguration="MessageBehavior">
                <!--address - 服务地址-->
                <!--binding - 通信方式-->
                <!--contract - 服务契约-->
                <!--bindingConfiguration - 指定相关的绑定配置-->
                <endpoint address="" binding="wsHttpBinding" contract="WCF.ServiceLib.Message.IMtom" bindingConfiguration="MtomBindingConfiguration" />
            </service>
        </services>
        <behaviors>
            <serviceBehaviors>
                <behavior name="MessageBehavior">
                    <!--httpGetEnabled - 使用get方式提供服务-->
                    <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="true"/>
                </behavior>
            </serviceBehaviors>
        </behaviors>
        <bindings>
            <wsHttpBinding>
                <!--messageEncoding - 指定用 MTOM 还是 Text 对 SOAP 消息编码-->
                <!--maxReceivedMessageSize - 在采用此绑定配置的通道上可接收的最大消息大小（单位：字节）-->
                <!--receiveTimeout - 在传输引发异常之前可用于完成读取操作的时间间隔-->
                <binding name="MtomBindingConfiguration" messageEncoding="Mtom" maxReceivedMessageSize="1073741824" receiveTimeout="00:10:00">
                    <!--maxArrayLength - 配额控制：允许的最大数组长度-->
                    <readerQuotas maxArrayLength="1073741824" />
                </binding>
            </wsHttpBinding>
        </bindings>
    </system.serviceModel>
</configuration>

 

 

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)" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
        <p>
                MTOM(Message Transmission Optimization Mechanism) - 消息传输优化机制
        </p>
        <div>
                <ul>
                        <li>可以指定用 MTOM 还是 Text 对 SOAP 消息编码</li>
                        <li>抓soap消息的时候可以用tcpTrace</li>
                        <li>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）</li>
                </ul>
        </div>
        <div>
                源文件：
                <asp:FileUpload ID="file" runat="server" />
                 
                上传路径：
                <asp:TextBox ID="txtDestination" runat="server" Text="C:\"></asp:TextBox>
                 
                <asp:Button ID="btnUpload" runat="server" Text="上传" OnClick="btnUpload_Click" />
        </div>
</asp:Content>

 

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

<?xml version="1.0"?>
<configuration>
    <system.serviceModel>
        <client>
            <!--address - 服务地址-->
            <!--binding - 通信方式-->
            <!--contract - 服务契约-->
            <!--bindingConfiguration - 指定相关的绑定配置-->
            <!--behaviorConfiguration - 指定相关的行为配置-->
            <!--endpoint address="http://localhost:3502/ServiceHost/Message/Mtom.svc" binding="wsHttpBinding" contract="MessageSvc.Mtom.IMtom" bindingConfiguration="MtomBindingConfiguration" behaviorConfiguration="MtomEndpointBehavior" /-->
            <endpoint address="http://localhost:3502/ServiceHost/Message/Mtom.svc" binding="wsHttpBinding" contract="MessageSvc.Mtom.IMtom" bindingConfiguration="MtomBindingConfiguration" />
        </client>
        <bindings>
            <wsHttpBinding>
                <!--messageEncoding - 指定用 MTOM 还是 Text 对 SOAP 消息编码-->
                <!--sendTimeout - 在传输引发异常之前可用于完成写入操作的时间间隔-->
                <binding name="MtomBindingConfiguration" messageEncoding="Mtom" sendTimeout="00:10:00">
                    <!--maxArrayLength - 配额控制：允许的最大数组长度-->
                    <readerQuotas maxArrayLength="1073741824" />
                </binding>
            </wsHttpBinding>
        </bindings>
        <behaviors>
            <endpointBehaviors>
                <behavior name="MtomEndpointBehavior">
                    <!--clientVia - 创建传输通道的 URI （tcpTrace抓soap的时候用）-->
                    <clientVia viaUri="http://localhost:8888/ServiceHost/Message/Mtom.svc" />
                </behavior>
            </endpointBehaviors>
        </behaviors>
    </system.serviceModel>
</configuration>

 

运行结果：
上传文件后提示上传成功 


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