首先介绍下 WebService的编写:
WebService是.NET平台下一种主流的服务提供方式,它通过以后SOAP协议传输XML格式的数据,具体的定义记不太清楚了.
DEMO中MqWebService的设计思路:
本想画个设计图的,可惜Visio没有装好,就在这里用文字叙述下吧;
一, MyQueue类: 封装了对MSMQ的访问函数(DEMO中使用的都是同步方式)
Code/********************************************************************************************
* Author:陈子文
* CreateDate;2007-11-20
* function:这是一个MSMQ类，定义了MSMQ queue的创建，消息的接收和发送
* summary:这是一个同步MSMQ
* Email: skyczw2005@yahoo.com.cn
* *****************************************************************************************/
using System;
using System.Configuration;
using System.Messaging;
namespace MqWebService
{
/// <summary>
/// MyQueue 的摘要说明。
/// </summary>
public class MyQueue
{
//成员变量
protected MessageQueue _queue;
protected MessageQueueTransactionType _mqTransaction;
protected TimeSpan _timeSpan;
//构造函数
public MyQueue(string mqPath,int timeSpan)
{
_mqTransaction = MessageQueueTransactionType.Automatic;
_timeSpan = TimeSpan.FromMilliseconds((double)timeSpan);
//创建QUEQUE
_queue = new MessageQueue(mqPath,true);
//去掉不用的属性
_queue.DefaultPropertiesToSend.AttachSenderId = false;
_queue.DefaultPropertiesToSend.UseAuthentication = false;
_queue.DefaultPropertiesToSend.UseEncryption = false;
_queue.DefaultPropertiesToSend.AcknowledgeType = AcknowledgeTypes.None;
_queue.DefaultPropertiesToSend.UseJournalQueue = false;
}
/// <summary>
/// 从消息队列接收消息
/// </summary>
/// <returns></returns>
public virtual object ReceiveMessage()
{
try
{
using( Message msg = _queue.Receive(_timeSpan,_mqTransaction))
return msg;
}
catch(MessageQueueException mqEx)
{
if (mqEx.MessageQueueErrorCode == MessageQueueErrorCode.IOTimeout)
throw new TimeoutException();
throw;
}
}
/// <summary>
/// 发送消息到队列
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
public virtual void SendMessage(string msg)
{
_queue.Formatter = new ActiveXMessageFormatter();
try
{
_queue.Send(msg,_mqTransaction);
}
catch(MessageQueueException mqEx)
{
throw mqEx;
}
catch(System.Exception ex)
{
throw ex;
}
}
}
}
二,建立好访问MQ的类后,在定义我们请求消息和回复消息的实体类:
/********************************************************************************************
* Author:陈子文
* CreateDate;2007-11-20
* function:业务对象实体类
* summary:
* Email: skyczw2005@yahoo.com.cn
* *****************************************************************************************/
using System;
using System.Xml;
using System.Xml.Serialization;
namespace MqWebService
{
/// <summary>
/// InfoFormate 的摘要说明。
/// </summary>
[Serializable]
public class InfoFormate
{
//成员变量
private string _id;
private string _bankNo;
private int _money;
private int _goodsId;
public InfoFormate()
{
_id = "";
_bankNo = "";
_money = 0;
_goodsId = 0 ;
}
#region 属性
public string Id
{
set { _id = value;}
get {return _id ;}
}
public string BankNo
{
set {_bankNo = value;}
get {return _bankNo ;}
}
public int Money
{
set {_money = value;}
get { return _money;}
}
public int GoodId
{
set { _goodsId = value;}
get {return _goodsId;}
}
#endregion
//方法
/// <summary>
/// 打包
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
public static string InPackage(InfoFormate info)
{
string _package = info.Id.Trim()+"#"+info.BankNo.Trim()+"#"+info.Money.ToString().Trim()+"#"+info.GoodId.ToString().Trim();
return _package;
}
//解包
/// <summary>
///
/// </summary>
/// <param name="package"></param>
/// <returns></returns>
public static InfoFormate UnPackage(string package)
{
InfoFormate info = new InfoFormate();
try
{
string[] tmp=package.Split("#".ToCharArray(),10);
info.Id =tmp[0].Trim();
info.BankNo = tmp[1].Trim();
info.Money = int.Parse(tmp[2].Trim());
info.GoodId = int.Parse(tmp[3].Trim());
}
catch(System.Exception ex)
{
throw ex ;
}
return info;
}
}
/// <summary>
/// InfoFormate 的摘要说明。
/// </summary>
[Serializable]
public class InfoRespone
{
//成员变量
private string _Transid;
private string _bankNo;
private int _accountMoney; //帐户余额
private int _money;
private int _goodsId;
private int _state; //0 失败 1成功
public InfoRespone()
{
_Transid = "";
_bankNo = "";
_money = 0;
_goodsId = 0 ;
_state = 0;
_accountMoney = 0;
}
#region 属性
public string TransId
{
set { _Transid = value;}
get {return _Transid ;}
}
public string BankNo
{
set {_bankNo = value;}
get {return _bankNo ;}
}
public int Money
{
set {_money = value;}
get { return _money;}
}
public int GoodId
{
set { _goodsId = value;}
get {return _goodsId;}
}
public int State
{
set {_state = value;}
get {return _state;}
}
public int AccountMoney
{
set {_accountMoney = value;}
get {return _accountMoney ;}
}
#endregion
//方法
/// <summary>
/// 打包
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
public static string InPackage(InfoRespone info)
{
string _package = info.TransId.Trim()+"#"+info.BankNo.Trim()+"#"+info.Money.ToString().Trim()+"#"+info.GoodId.ToString().Trim()+"#"+info.AccountMoney+"#"+info.State;
return _package;
}
//解包
/// <summary>
///
/// </summary>
/// <param name="package"></param>
/// <returns></returns>
public static InfoRespone UnPackage(string package)
{
InfoRespone info = new InfoRespone();
try
{
string[] tmp=package.Split("#".ToCharArray(),10);
info.TransId =tmp[0];
info.BankNo = tmp[1];
info.Money = int.Parse(tmp[2].Trim());
info.GoodId = int.Parse(tmp[3].Trim());
info.AccountMoney =100; //int.Parse(tmp[4].Trim());
info.State =1; //int.Parse(tmp[5].Trim());
}
catch(System.Exception ex)
{
throw ex ;
}
return info;
}
}
}
这两个类是简单的对业务进行了处理,没有很详细的考虑异常等处理.
三,建立好访问MQ的类后,在定义我们请求消息和回复消息的MSMQ类:
/********************************************************************************************
* Author:陈子文
* CreateDate;2007-11-20
* function:这是一个业务请求MQ类，定义了消息的接收和发送
* summary:这是一个同步MSMQ
* Email: skyczw2005@yahoo.com.cn
* *****************************************************************************************/
using System;
using System.Configuration;
using System.Messaging;
namespace MqWebService
{
/// <summary>
/// RequstMq 的摘要说明。
/// </summary>
public class RequstMq :MyQueue
{
private static string _mqPath = "chen\\private$\\mytestmq"; //以后加
private static int _timeSpan = 200 ;
public RequstMq():base(_mqPath,_timeSpan) //
{
_queue.Formatter = new ActiveXMessageFormatter();
}
/// <summary>
/// 从消息队列接收消息
/// </summary>
/// <returns></returns>
public new string ReceiveMessage()
{
return (string)((Message)base.ReceiveMessage()).Body;
}
/// <summary>
/// 发送消息到队列
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
public void SendMessage(string msg)
{
base._mqTransaction = MessageQueueTransactionType.Single;
base.SendMessage(msg);
}
/// <summary>
/// 从消息队列接收消息
/// </summary>
/// <returns></returns>
public string ReceiveMessage(int timeSpan)
{
base._timeSpan = TimeSpan.FromMilliseconds((double)timeSpan);
return ReceiveMessage();
}
}
}
///
/********************************************************************************************
* Author:陈子文
* CreateDate;2007-11-20
* function:这是一个业务回复MQ类，定义了消息的接收和发送
* summary:这是一个同步MSMQ
* Email: skyczw2005@yahoo.com.cn
* *****************************************************************************************/
using System;
using System.Configuration;
using System.Messaging;
namespace MqWebService
{
/// <summary>
/// RequstMq 的摘要说明。
/// </summary>
public class ResponeMSMQ :MyQueue
{
private static string _mqPath = @"chen\private$\MyReceMq"; //以后加
private static int _timeSpan = 200;
public ResponeMSMQ():base(_mqPath,_timeSpan)
{
_queue.Formatter = new ActiveXMessageFormatter();
}
/// <summary>
/// 从消息队列接收消息
/// </summary>
/// <returns></returns>
public new string ReceiveMessage()
{
base._mqTransaction = MessageQueueTransactionType.Automatic;
string tmp ="";
try
{
tmp = ((Message)base.ReceiveMessage()).Body.ToString();
}
catch(System.Exception ex)
{
throw ex;
}
return tmp;
}
/// <summary>
/// 发送消息到队列
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
public void SendMessage(string msg)
{
base._mqTransaction = MessageQueueTransactionType.Single;
base.SendMessage(msg);
}
/// <summary>
/// 从消息队列接收消息
/// </summary>
/// <returns></returns>
public string ReceiveMessage(int timeSpan)
{
base._timeSpan = TimeSpan.FromMilliseconds((double)timeSpan);
return ReceiveMessage();
}
}
}
四,现在可以定义一个任务类Task: 这个类是每个请求上来的实体,里面封装了,对消息的处理和请求的状态等等;
using System;
using System.Xml;
using System.Xml.Serialization;
namespace MqWebService
{
/// <summary>
/// Task 的摘要说明。
/// </summary>
public class Task
{
//成员变量
private string _Idle;
private InfoFormate _infoFormate;
private InfoRespone _infoRespone;
private TaskState _state;
private BLL _bll;
public Task(BLL bll)
{
_Idle ="";
_state = TaskState.idle;
this._bll = bll;
_infoRespone = new InfoRespone();
}
public string Idle
{
get{return Idle;}
}
public InfoRespone Request(InfoFormate info)
{
lock(this)
{
_Idle = info.Id;
_infoFormate = info;
_state = TaskState.run;
//初试回复
_infoRespone.TransId = _infoFormate.Id;
_infoRespone.BankNo = _infoFormate.BankNo;
_infoRespone.Money = _infoFormate.Money;
_infoRespone.State = 0 ;
}
//打包
string _requestStr = InfoFormate.InPackage(_infoFormate);
//处理中心处理
if ( _bll.Request(this,_requestStr) == true )
{
WaitForProcess(20);
}
else
{
_infoRespone.State = 0 ;
}
return _infoRespone;
}
//等待系统处理
public void WaitForProcess(int outTime)
{
int time = 0;
while(true)
{
if (_state == TaskState.finnish )
{
_infoRespone.State = 1;
break;
}
if (time > outTime)
{
_infoRespone.State = 0;
_bll.Unregister(this);
break;
}
time ++ ;
System.Threading.Thread.Sleep(100);
}
}
//收到回复
public void OnRespone( InfoRespone info)
{
lock(this)
{
this._infoRespone = info;
_state = TaskState.finnish;
}
}
}
public enum TaskState
{
idle,
run,
finnish
}
}
五,最后定义我们的处理中心了BLL,BLL里面含有一个线程和一个ArrayList;ArrayList是我们的请求处理队列;线程是持续的读回复MSMQ消息;
using System;
using System.Collections;
using System.Threading;
using System.Xml;
using System.Xml.Serialization;
namespace MqWebService
{
/// <summary>
/// BLL 的摘要说明。
/// </summary>
public class BLL
{
//成员变量
private static ArrayList _table = new ArrayList();
private Thread _thread;
private RequstMq _requestMq;
private ResponeMSMQ _responeMSMQ;
private bool _continueFlag;
public BLL()
{
_continueFlag = false;
_thread = new Thread(new ThreadStart(Working));
_requestMq = new RequstMq();
_responeMSMQ = new ResponeMSMQ();
RunService();
}
public void RunService()
{
_continueFlag = true;
_thread.Start();
}
public void StopService()
{
_continueFlag = false;
_thread.Suspend();
}
public void Unregister(Task task)
{
lock(this)
{
_table.Remove(task);
}
}
public void Working()
{
while(_continueFlag)
{
try
{
string msg = _responeMSMQ.ReceiveMessage();
if (msg.Trim().Length == 0)
continue;
InfoRespone info = InfoRespone.UnPackage(msg);
Task _task = null;
if (info !=null)
{
lock(this)
{
for(int i=0; i<_table.Count ; i++)
{
Task tmp = (Task)_table[i];
if (tmp.Idle == info.TransId )
{
_task = tmp;
_table.Remove(tmp);
break;
}
}
}
}
if (_task != null)
{
_task.OnRespone(info);
}
Thread.Sleep(100);
}
catch(System.Exception ex)
{
//throw ex;
}
}
}
public bool Request(Task task, string msg)
{
bool retcode= false;
try
{
_requestMq.SendMessage(msg);
_table.Add(task);
retcode= true;
}
catch(System.Exception ex)
{
throw ex;
}
return retcode;
}
}
}
ok,WebService端的基础代码完成了.