ASP.NET通过HTML的上传文件标签来上传文件

    开始以为会很麻烦，需要什么读二进制流写二进制流的，结果自己试了一下，还真简单。。直接一个saveAs就行了。。。
下面是HTML代码：

<form name="uploadForm" method="post" enctype="multipart/form-data" action="handler/upload.ashx">
    <input type="file" id="imgFile" name="imgFile" style="width:220px;" />
    <input type="submit" value="上传" />
</form>

在这里我是用了一般处理程序来进行文件的上传，代码如下：

<%@ WebHandler Language="C#" Class="upload" %>

/*
 * 作者: 牛腩
 * 创建时间: 2009-10-28 15:40:39
 * Email: [e-mail]
 * 说明: 上传
 */

using System;
using System.Web;

public class upload : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        // 下面这句是最重要的，取得HttpPostedFile对象后就可以调用他的SaveAs方法了
        HttpPostedFile imgFile = HttpContext.Current.Request.Files["imgFile"];
        string savePath = context.Server.MapPath("~/upload/"+imgFile.FileName);
        imgFile.SaveAs(savePath);
        context.Response.Write("<br>保存成功！文件名："+imgFile.FileName);
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

}

评论

9 楼 k04110411 2014-05-08  

jhlovett 写道

牛哥,想问下
public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        HttpPostedFile imgFile = context.Request.Files["imgName"];
        String fileName=imgFile.FileName;
        fileName = fileName.Substring(fileName.LastIndexOf("\\")+1);
        String savePath = context.Server.MapPath("../Upload/") + fileName;
        imgFile.SaveAs(savePath);
        context.Response.Write("<script>alert('上传成功!');</script>");        context.Response.Redirect("~/Default5.aspx");
    }

红色子脚本部分没办法显示哦!!!
怎么做才能显示呢?

context.Response.ContentType = "text/plain";
改成
context.Response.ContentType = "text/html";

8 楼 guanguozhi 2010-08-29  

<form id='myform' action="UpLoad.ashx" target="goshi" method="post" enctype="multipart/form-data">
    <div>
        <input id="File1" name="File1" type="file" />
        
        <iframe name="goshi" id="goshi" style="display:none"></iframe>
        <input id="Button1" type="submit" value="Ajax上传文件" />
    </div>
    <div id="msg"></div>
    </form>

 context.Response.ContentType = "text/plain";
        HttpPostedFile imgFile = HttpContext.Current.Request.Files[ "File1" ];
        string ext = Path.GetExtension ( imgFile.FileName );
        Guid fileID = Guid.NewGuid ( );
        string FileName = fileID + "." + ext;
        string savePath = context.Server.MapPath ( "UpLoadFile/" + FileName );
        imgFile.SaveAs ( savePath );

但是如果上传的文件太大的话，就会报错。。。。。

7 楼 guanguozhi 2010-08-29  

context.Response.ContentType = "text/plain";
        HttpPostedFile imgFile = HttpContext.Current.Request.Files[ "File1" ];
        string ext = Path.GetExtension ( imgFile.FileName );
        Guid fileID = Guid.NewGuid ( );
        string FileName = fileID + "." + ext;
        string savePath = context.Server.MapPath ( "UpLoadFile/" + FileName );
        imgFile.SaveAs ( savePath );

6 楼 qingniaoRK 2010-04-24  

啊，事实证明，无法使用。。。。有哪位能使用的嘛？把代码贴出啦呀

5 楼 qingniaoRK 2010-04-24  

还不错了，收藏了。我看看下啊。

4 楼 jhlovett 2010-02-05  

牛哥,想问下
public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        HttpPostedFile imgFile = context.Request.Files["imgName"];
        String fileName=imgFile.FileName;
        fileName = fileName.Substring(fileName.LastIndexOf("\\")+1);
        String savePath = context.Server.MapPath("../Upload/") + fileName;
        imgFile.SaveAs(savePath);
        context.Response.Write("<script>alert('上传成功!');</script>");        context.Response.Redirect("~/Default5.aspx");
    }

红色子脚本部分没办法显示哦!!!
怎么做才能显示呢?

3 楼 jhlovett 2010-02-05  

  public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        HttpPostedFile imgFile = context.Request.Files["imgName"];
        String fileName=imgFile.FileName;
        fileName = fileName.Substring(fileName.LastIndexOf("\\")+1);
        String savePath = context.Server.MapPath("../Upload/") + fileName;
        imgFile.SaveAs(savePath);
        context.Response.Write("保存成功!文件名:" + fileName);
    }

2 楼 jhlovett 2010-02-05  

貌似取入径当事不对啊。。。

context.Server.MapPath("~/upload/"+imgFile.FileName);  

1 楼 aXinNo1 2009-11-07  

地方是大方师傅答复是否多少佛挡杀佛多少佛挡杀佛多少佛挡杀佛的