大文件上传和在线播放
首先來說說大文件上傳，用的WEB服務，代碼如下。
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 的摘要說明。
?/// </summary>
?public class FileService : System.Web.Services.WebService
?{
??public FileService()
??{
???//CODEGEN: 該調用是 ASP.NET Web 服務設計器所必需的
???InitializeComponent();
??}
??#region 組件設計器生成的代碼
??
??//Web 服務設計器所必需的
??private IContainer components = null;
????
??/// <summary>
??/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
??/// 此方法的內容。
??/// </summary>
??private void InitializeComponent()
??{
??}
??/// <summary>
??/// 清理所有正在使用的資源。
??/// </summary>
??protected override void Dispose( bool disposing )
??{
???if(disposing && components != null)
???{
????components.Dispose();
???}
???base.Dispose(disposing);??
??}
??
??#endregion
??// WEB 服務示例
??// HelloWorld() 示例服務返回字符串 Hello World
??// 若要生成，請取消注釋下列行，然后保存并生成項目
??// 若要測試此 Web 服務，請按 F5 鍵
??[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;
??????? }
?}
}
還需要一個頁面來指定上傳的文件，和調用WEB服務.aspx頁代碼。
<!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="上載文件"></asp:Button>
??</form>
?</body>
</HTML>
CS后臺代碼如下。
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 的摘要說明。
?/// </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)
??{
???// 在此處放置用戶代碼以初始化頁面
??}
??#region Web 窗體設計器生成的代碼
??override protected void OnInit(EventArgs e)
??{
???//
???// CODEGEN: 該調用是 ASP.NET Web 窗體設計器所必需的。
???//
???InitializeComponent();
???base.OnInit(e);
??}
??
??/// <summary>
??/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
??/// 此方法的內容。
??/// </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)
??{
???///首先得到上載文件信息和文件流
???if(MyFile.PostedFile != null)
???{
????System.Web.HttpFileCollection oFiles;
????oFiles = System.Web.HttpContext.Current.Request.Files;
????if(oFiles.Count < 1)
????{
?????Response.Write ("請選擇文件。");
?????Response.End();
????}
????string FilePath = oFiles[0].FileName;
????if(FilePath == "" || FilePath == null)
????{
?????Response.Write ("請選擇一個文件。");
?????Response.End();
????}
????string FileName = FilePath.Substring(FilePath.LastIndexOf("\\")+1);
????try
????{
?????///處理上載的文件流信息。
?????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);
?????///調用Web Services的UploadFile方法進行上載文件。
?????Response.Write(o.UploadFile(b, FileName));
?????fs.Close();
????}
????catch(Exception ex)
????{
?????Response.Write(ex.Message);
????}
???}
???else
???{
????Response.Write("請選擇文件");
???}
??}
?}
}
需要注意的是上載大文件時，可使用 元素的 maxRequestLength 屬性來增加文件大小的最大允許值，例如：
<configuration>
?? <system.web>
????? <httpRuntime maxRequestLength="5655648" executionTimeout="3600" />
?? </system.web>
</configuration>
以上是大文件上傳，下面來實現在線播放功能。ASPX頁代碼如下：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
? <HEAD>
? <TITLE>多媒體播放頁面</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后臺只需要指定一下"<%=PlayUrl%>"就可以了，代碼如下：
public string PlayUrl;
??private void Page_Load(object sender, System.EventArgs e)
??{
???if(!Page.IsPostBack)
???{
????? PlayUrl="UpLoadFile\\04405090.wmv";
???}
??}
在線播放的功能還不是很完善，我想用 Flash來做在線播放像新浪網站上的播放那樣，等研究出來了我會粘到博客上的。
轉載于:https://www.cnblogs.com/yanfei331/archive/2007/07/25/831135.html
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