经过文件流的方式上传文件

时间 2019-11-12

标签经过文件方式上传繁體版

原文原文链接

上传文件有四种方式html

1：fileupload服务器

2：ftp网络

3：网络共享post

4：文件流写入spa

咱们常常碰到这种困惑，你们都知道fileupload能够经过saveas方法存储文件，可是若是咱们想把上传的文件写入到网络中其余服务器该怎么办呢？这样作有两个好处rest

1：文件集中存储orm

2：便于扩展server

3：便于备份xml

由于咱们接受上传的aspx.cs文件运行于某台服务器，可是咱们要写入另一台服务器，该怎么办呢？一般有三种方法：FTP、文件流写入、网络共享（我还没试验成功）htm

文件流写入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("向另一个服务器post成功");
                HttpWebResponse rs = (HttpWebResponse)httprequest.GetResponse();
                Stream rstream = respon.GetResponseStream();
                StreamReader rstreamread = new StreamReader(rstream);
                Response.Write(rstreamread.ReadToEnd());
            }
            else
            {
                Response.Write("向另一个服务器post失败");
            }
            sr.Close();
        }
    }
}

另外一台机器的代码

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("上传成功" + 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());
         * */
    }
}

FTP写入：