當前位置：首頁 > 编程资源 > 编程问答 >内容正文

编程问答

大文件上传和在线播放

發(fā)布時間：2023/12/19 编程问答 47 豆豆

生活随笔收集整理的這篇文章主要介紹了大文件上传和在线播放小編覺得挺不錯的,現(xiàn)在分享給大家,幫大家做個參考.

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(nèi)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(nèi)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(xiàn)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(wǎng)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

總結

以上是生活随笔為你收集整理的大文件上传和在线播放的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。