首先来说说大文件上传，用的WEB服务，代码如下。
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;
using System.IO;
namespace WebNews
{
/// <summary>
/// FileService 的摘要说明。
/// </summary>
public class FileService : System.Web.Services.WebService
{
public FileService()
{
//CODEGEN: 该调用是 ASP.NET Web 服务设计器所必需的
InitializeComponent();
}
#region 组件设计器生成的代码
//Web 服务设计器所必需的
private IContainer components = null;
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if(disposing && components != null)
{
components.Dispose();
}
base.Dispose(disposing);
}
#endregion
// WEB 服务示例
// HelloWorld() 示例服务返回字符串 Hello World
// 若要生成，请取消注释下列行，然后保存并生成项目
// 若要测试此 Web 服务，请按 F5 键
[WebMethod]
public ArrayList GetMp3()
{
ArrayList mp3List =new ArrayList();
string mp3path = Server.MapPath("mp3");
try
{
DirectoryInfo di = new DirectoryInfo(mp3path);
FileInfo[] fi = di.GetFiles();
foreach (FileInfo fiTemp in fi)
{
if(fiTemp.Extension.ToLower() == ".mp3"||fiTemp.Extension.ToLower() == ".wma")
{
mp3List.Add(fiTemp.Name);
}
}
}
catch (Exception e)
{
Console.WriteLine("The process failed: {0}", e.ToString());
}
return mp3List;
}
}
}
还需要一个页面来指定上传的文件，和调用WEB服务.aspx页代码。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Upload</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body>
<form id="Form1" method="post" runat="server" enctype="multipart/form-data">
<INPUT id="MyFile" type="file" runat="server" NAME="MyFile">
<br>
<br>
<asp:Button id="Button1" runat="server" Text="上载文件"></asp:Button>
</form>
</body>
</HTML>
CS后台代码如下。
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Web.Services;
using System.IO;
namespace WebNews
{
/// <summary>
/// Upload1 的摘要说明。
/// </summary>
public class Upload1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.HtmlControls.HtmlInputFile MyFile;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
///首先得到上载文件信息和文件流
if(MyFile.PostedFile != null)
{
System.Web.HttpFileCollection oFiles;
oFiles = System.Web.HttpContext.Current.Request.Files;
if(oFiles.Count < 1)
{
Response.Write ("请选择文件。");
Response.End();
}
string FilePath = oFiles[0].FileName;
if(FilePath == "" || FilePath == null)
{
Response.Write ("请选择一个文件。");
Response.End();
}
string FileName = FilePath.Substring(FilePath.LastIndexOf("\\")+1);
try
{
///处理上载的文件流信息。
byte[] b = new byte[oFiles[0].ContentLength];
System.IO.Stream fs;
Upload o;
o = new Upload();
fs = (System.IO.Stream)oFiles[0].InputStream;
fs.Read(b, 0, oFiles[0].ContentLength);
///调用Web Services的UploadFile方法进行上载文件。
Response.Write(o.UploadFile(b, FileName));
fs.Close();
}
catch(Exception ex)
{
Response.Write(ex.Message);
}
}
else
{
Response.Write("请选择文件");
}
}
}
}
需要注意的是上载大文件时，可使用
<configuration>
<system.web>
<httpRuntime maxRequestLength="5655648" executionTimeout="3600" />
</system.web>
</configuration>
以上是大文件上传，下面来实现在线播放功能。ASPX页代码如下：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<TITLE>多媒体播放页面</TITLE>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
</HEAD>
<BODY ms_positioning="GridLayout" bottomMargin=10 topMargin=10>
<FORM id="Form1" method="post" runat="server">
<object id="MediaPlayer1" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" width="620" height="460" VIEWASTEXT>
<param name="filename" value= "<%=PlayUrl%>">
<param name="AutoStart" value="1">
<param name="Enabled" value="-1">
<param name="ShowControls" value="-1">
<param name="ShowGotoBar" value="0">
<param name="ShowStatusBar" value="-1">
<param name="EnableFullScreenControls" value="0">
<param name="EnablePositionControls" value="0">
<param name="Volume" value="0">
<param name="DisplaySize" value="4">
<param name="SendErrorEvents" value="0">
<param name="enableContextMenu" value="0">
<param name="EnableTracker" value="-1">
<param name="AudioStream" value="-1">
<param name="AutoSize" value="0">
<param name="AnimationAtStart" value="-1">
<param name="AllowScan" value="-1">
<param name="AllowChangeDisplaySize" value="-1">
<param name="AutoRewind" value="0">
<param name="Balance" value="0">
<param name="BaseURL" value="">
<param name="BufferingTime" value="5">
<param name="CaptioningID" value="">
<param name="ClickToPlay" value="-1">
<param name="CursorType" value="0">
<param name="CurrentPosition" value="-1">
<param name="CurrentMarker" value="0">
<param name="DefaultFrame" value="">
<param name="DisplayBackColor" value="0">
<param name="DisplayForeColor" value="16777215">
<param name="DisplayMode" value="0">
<param name="InvokeURLs" value="-1">
<param name="Language" value="-1">
<param name="Mute" value="0">
<param name="PlayCount" value="1">
<param name="PreviewMode" value="0">
<param name="Rate" value="1">
<param name="SAMILang" value="">
<param name="SAMIStyle" value="">
<param name="SAMIFileName" value="">
<param name="SelectionStart" value="-1">
<param name="SelectionEnd" value="-1">
<param name="SendOpenStateChangeEvents" value="-1">
<param name="SendWarningEvents" value="-1">
<param name="SendKeyboardEvents" value="0">
<param name="SendMouseClickEvents" value="0">
<param name="SendMouseMoveEvents" value="0">
<param name="SendPlayStateChangeEvents" value="-1">
<param name="ShowCaptioning" value="0">
<param name="ShowAudioControls" value="-1">
<param name="ShowDisplay" value="0">
<param name="ShowPositionControls" value="-1">
<param name="ShowTracker" value="-1">
<param name="TransparentAtStart" value="0">
<param name="VideoBorderWidth" value="0">
<param name="VideoBorderColor" value="0">
<param name="VideoBorder3D" value="0">
<param name="WindowlessVideo" value="0">
</object>
</FORM>
</BODY>
</HTML>
CS后台只需要指定一下"<%=PlayUrl%>"就可以了，代码如下：
public string PlayUrl;
private void Page_Load(object sender, System.EventArgs e)
{
if(!Page.IsPostBack)
{
PlayUrl="UpLoadFile\\04405090.wmv";
}
}
在线播放的功能还不是很完善，我想用 Flash来做在线播放像新浪网站上的播放那样，等研究出来了我会粘到博客上的。
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