經過文件流的方式上傳文件

時間 2019-11-12

標籤經過文件方式上傳简体版

原文原文鏈接

上傳文件有四種方式html

1：fileupload服務器

2：ftp網絡

3：網絡共享post

4：文件流寫入spa

咱們常常碰到這種困惑，你們都知道fileupload能夠經過saveas方法存儲文件，可是若是咱們想把上傳的文件寫入到網絡中其餘服務器該怎麼辦呢？這樣作有兩個好處rest

1：文件集中存儲orm

2：便於擴展server

3：便於備份xml

由於咱們接受上傳的aspx.cs文件運行於某臺服務器，可是咱們要寫入另一臺服務器，該怎麼辦呢？一般有三種方法：FTP、文件流寫入、網絡共享（我還沒試驗成功）htm

文件流寫入DEMO：

index.aspx

<%@ Page Language="C#" AutoEventWireup="true" Debug="true" CodeFile="index.aspx.cs" Inherits="_Index" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

index.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net;

public partial class _Index : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (FileUpload1.HasFile)
        {
            byte[] postdata = FileUpload1.FileBytes;
            FileUpload1.SaveAs(@"D:\project\TestUpload\upload\" + FileUpload1.FileName);
            HttpWebRequest httprequest = (HttpWebRequest)System.Net.WebRequest.Create("http://dxf.3g.cn:81/uploadfilestream.aspx?filename=" + FileUpload1.FileName);
            httprequest.Method = "POST";
            httprequest.KeepAlive = false;
            httprequest.ContentType = "multipart/form-data";
            httprequest.Timeout = 10*1000;
            httprequest.ContentLength = postdata.Length;
            Stream sr=httprequest.GetRequestStream();
            sr.Write(postdata, 0, postdata.Length);
            HttpWebResponse respon = (HttpWebResponse)httprequest.GetResponse();
            if (httprequest.HaveResponse)
            {
                Response.Write("向另一個服務器post成功");
                HttpWebResponse rs = (HttpWebResponse)httprequest.GetResponse();
                Stream rstream = respon.GetResponseStream();
                StreamReader rstreamread = new StreamReader(rstream);
                Response.Write(rstreamread.ReadToEnd());
            }
            else
            {
                Response.Write("向另一個服務器post失敗");
            }
            sr.Close();
        }
    }
}

另外一臺機器的代碼

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net;

public partial class uploadfilestream : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string filename = Request["filename"];
        Stream stream = Request.InputStream;
        byte[] buffer = new byte[stream.Length];
        stream.Read(buffer, 0, (int)stream.Length);
        File.WriteAllBytes(@"D:\project\TestUploadStream\upload\" + filename, buffer);
        Response.Write("上傳成功" + filename);
        /*
        HttpWebRequest res = (HttpWebRequest)WebRequest.Create("http://dxf.3g.cn:81/test.aspx");
        HttpWebResponse respon = (HttpWebResponse)res.GetResponse();
        Stream restream= respon.GetResponseStream();
        StreamReader srm = new StreamReader(restream);
        Response.Write(srm.ReadToEnd());
         * */
    }
}