FMS案例开发--视频聊天室（二）
通过前面的简单分析，下面正式进入视频聊天室的设计开发阶段。根据我以前开发管理软件的经验，我们从基础模块开始，首先设计和开发后台功能模块，实现基本的用户注册和通信接口等相关功能。
聊天室需求简单，主要就一张表用来存储用户注册资料，当用户登陆聊天室的时候，则通过通信接口来验证用户。SQL脚本如下：
USE
[
ChatRoom
]
GO
/* ***** 对象: Table [dbo].[UserInfo] 脚本日期: 05/16/2009 16:45:53 ***** */
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [ dbo ] . [ UserInfo ] (
[ ID ] [ int ] IDENTITY ( 1 , 1 ) NOT NULL ,
[ UserName ] [ varchar ] ( 50 ) NULL ,
[ NickName ] [ varchar ] ( 50 ) NOT NULL ,
[ Password ] [ varchar ] ( 50 ) NOT NULL ,
[ QQ ] [ varchar ] ( 20 ) NULL ,
[ RegTime ] [ datetime ] NULL ,
CONSTRAINT [ PK_UserInfo ] PRIMARY KEY CLUSTERED
(
[ ID ] ASC
) WITH (PAD_INDEX = OFF , STATISTICS_NORECOMPUTE = OFF , IGNORE_DUP_KEY = OFF , ALLOW_ROW_LOCKS = ON , ALLOW_PAGE_LOCKS = ON ) ON [ PRIMARY ]
) ON [ PRIMARY ]
GO
SET ANSI_PADDING OFF
GO
GO
/* ***** 对象: Table [dbo].[UserInfo] 脚本日期: 05/16/2009 16:45:53 ***** */
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [ dbo ] . [ UserInfo ] (
[ ID ] [ int ] IDENTITY ( 1 , 1 ) NOT NULL ,
[ UserName ] [ varchar ] ( 50 ) NULL ,
[ NickName ] [ varchar ] ( 50 ) NOT NULL ,
[ Password ] [ varchar ] ( 50 ) NOT NULL ,
[ QQ ] [ varchar ] ( 20 ) NULL ,
[ RegTime ] [ datetime ] NULL ,
CONSTRAINT [ PK_UserInfo ] PRIMARY KEY CLUSTERED
(
[ ID ] ASC
) WITH (PAD_INDEX = OFF , STATISTICS_NORECOMPUTE = OFF , IGNORE_DUP_KEY = OFF , ALLOW_ROW_LOCKS = ON , ALLOW_PAGE_LOCKS = ON ) ON [ PRIMARY ]
) ON [ PRIMARY ]
GO
SET ANSI_PADDING OFF
GO
本案例开发的通信接口采用WebService提供，考虑到只是做一些基本的通信加上本文重在于演示，所以就不去使用使用诸如FluorineFx之类的通信网关了。如有对FluorineFx感兴趣的朋友可以浏览以下文章：《Flex与.NET互操作系列文章》
数据访问通过Linq To Sql实现，对外提供WebService接口，Flex通过WebService和.NET通信达到数据交互的目的。
namespace
ChatRoomService
{
/// <summary>
/// CRService 的摘要说明
/// </summary>
[WebService(Namespace = " http://tempuri.org/ " )]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem( false )]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class CRService : System.Web.Services.WebService
{
private static ChatRoomDataContext ctx = new ChatRoomDataContext();
[WebMethod]
public string HelloWorld()
{
return " Hello World " ;
}
/// <summary>
/// 用户登录
/// </summary>
/// <param name="UserName"></param>
/// <param name="Password"></param>
/// <returns></returns>
[WebMethod]
public UserInfo Login( string UserName, string Password)
{
List < UserInfo > list = ctx.UserInfo.Where(u => u.UserName == UserName).Where(p => p.Password == Password).ToList();
if (list.Count > 0 )
return list[ 0 ];
return null ;
}
/// <summary>
/// 用户注册
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
[WebMethod]
public string Register( string infos)
{
string [] info = infos.Split( ' | ' );
UserInfo userInfo = new UserInfo
{
UserName = info[ 0 ],
Password = info[ 1 ],
NickName = info[ 2 ],
QQ = info[ 3 ],
RegTime = DateTime.Now
};
List < UserInfo > list = ctx.UserInfo.Where(n => n.UserName == userInfo.UserName).ToList();
if (list.Count > 0 )
return string .Format( " {0}|{1} " , " Error " , " 用户 " + userInfo.UserName + " 已经存在 " );
try
{
ctx.UserInfo.InsertOnSubmit(userInfo);
ctx.SubmitChanges();
return " Success " ;
}
catch
{
return " Error " ;
}
}
}
}
{
/// <summary>
/// CRService 的摘要说明
/// </summary>
[WebService(Namespace = " http://tempuri.org/ " )]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem( false )]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class CRService : System.Web.Services.WebService
{
private static ChatRoomDataContext ctx = new ChatRoomDataContext();
[WebMethod]
public string HelloWorld()
{
return " Hello World " ;
}
/// <summary>
/// 用户登录
/// </summary>
/// <param name="UserName"></param>
/// <param name="Password"></param>
/// <returns></returns>
[WebMethod]
public UserInfo Login( string UserName, string Password)
{
List < UserInfo > list = ctx.UserInfo.Where(u => u.UserName == UserName).Where(p => p.Password == Password).ToList();
if (list.Count > 0 )
return list[ 0 ];
return null ;
}
/// <summary>
/// 用户注册
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
[WebMethod]
public string Register( string infos)
{
string [] info = infos.Split( ' | ' );
UserInfo userInfo = new UserInfo
{
UserName = info[ 0 ],
Password = info[ 1 ],
NickName = info[ 2 ],
QQ = info[ 3 ],
RegTime = DateTime.Now
};
List < UserInfo > list = ctx.UserInfo.Where(n => n.UserName == userInfo.UserName).ToList();
if (list.Count > 0 )
return string .Format( " {0}|{1} " , " Error " , " 用户 " + userInfo.UserName + " 已经存在 " );
try
{
ctx.UserInfo.InsertOnSubmit(userInfo);
ctx.SubmitChanges();
return " Success " ;
}
catch
{
return " Error " ;
}
}
}
}
由于是直接使用WebService通信，ActionScript对象和C#对象之间的序列化问题，上面就直接以字符传的形式返回。有了通信接口，下面就可以做用户注册和登录的工作了。在Flex客户端全部通过<mx:WebService>组件和WebService通信，注册的完整代码如下：
Flex注册界面完整代码
var info:UserInfo 
}
} 
用户登录同样是使用WebService通信进行数据库验证，实现代码大致如下：
<
mx:WebService id
=
"
ctService
"
wsdl
=
"
http://localhost:1535/CRService.asmx?wsdl
"
>
< mx:operation name = " Login " result = " onLoginRusult(event) " fault = " onLoginFaile(event) " >
</ mx:operation >
</ mx:WebService >
private function onLogin(): void
{
this .ctService.Login( this .txtUserName.text, this .txtPassword.text);
}
private function onLoginRusult(evt:ResultEvent): void
{
if (evt.result != null )
{
// 显示自己的视频
// displayCameraSelf();
// 连接FMS服务器发布自己的视频流
publishNc = new NetConnection();
publishNc.connect( " rtmp://localhost/ChatRoom " );
so = SharedObject.getRemote( " ChatSO " ,publishNc.uri, false );
publishNc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatusHandler);
so.addEventListener(SyncEvent.SYNC,onSyncHandler);
so.connect(publishNc);
myUserName = evt.result.UserName;
myNickName = evt.result.NickName;
this .loginPanel.visible = false ;
this .chatRoomPanel.visible = true ;
ChatRoomViewStack.selectedChild = chatRoomPanel;
}
else
{
Alert.okLabel = " 确 定 " ;
Alert.show( " 登录失败！ " , " 系统提示 " );
}
}
< mx:operation name = " Login " result = " onLoginRusult(event) " fault = " onLoginFaile(event) " >
</ mx:operation >
</ mx:WebService >
private function onLogin(): void
{
this .ctService.Login( this .txtUserName.text, this .txtPassword.text);
}
private function onLoginRusult(evt:ResultEvent): void
{
if (evt.result != null )
{
// 显示自己的视频
// displayCameraSelf();
// 连接FMS服务器发布自己的视频流
publishNc = new NetConnection();
publishNc.connect( " rtmp://localhost/ChatRoom " );
so = SharedObject.getRemote( " ChatSO " ,publishNc.uri, false );
publishNc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatusHandler);
so.addEventListener(SyncEvent.SYNC,onSyncHandler);
so.connect(publishNc);
myUserName = evt.result.UserName;
myNickName = evt.result.NickName;
this .loginPanel.visible = false ;
this .chatRoomPanel.visible = true ;
ChatRoomViewStack.selectedChild = chatRoomPanel;
}
else
{
Alert.okLabel = " 确 定 " ;
Alert.show( " 登录失败！ " , " 系统提示 " );
}
}
通信主要就这两个功能点，都比较简单，关于Flex与WebServie通信我以前也写过两篇文章在《Flex与.NET互操作系列文章》里，不熟悉的的朋友可以先看看通信方面的实现。
本文就先介绍到这里，下一篇将介绍聊天室的详细开发，包括视频、语音、文字聊天的实现等相关知识点。