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candyvoice 2016-02-19
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正要做一个类似的东东，学习一下
ZacharyLuke 2015-08-28
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好详细啊，靠谱！
c02645 2013-08-20
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这个方法是用于删除文件的，上传就会出现旧文件，是用于删除旧文件的
/// <summary>
/// 删除上次（不是今天）不在数据库的文件
/// </summary>
private void delLastTimeFile()
{
string p = Server.MapPath(@"\upfile");
string timeName = p + @"\ttt.t";
string last = "";
if (File.Exists(timeName))
{
last = File.ReadAllText(timeName);
if (last != "")
{
if (last != DateTime.Now.ToString("yyyyMMdd"))
{
string[] fs = Directory.GetFiles(p, last + "*");
ODB.DbHelper db = new ODB.DbHelper();
DbCommand cmd = db.GetSqlStringCommond("select count(0) from Gxh_House_MemberFile where FileNewName like @NewName");
db.AddInParameter(cmd, "NewName", DbType.String, "");
foreach (string ss in fs)
{
string s = ss.Substring(ss.LastIndexOf(@"\") + 1);
if (s.StartsWith(last))
{
db.SetParameter(cmd, "NewName", "%" + s + "%");
if ((int)db.ExecuteScalar(cmd) == 0)
{//重命名文件
File.Move(p + @"\" + s, p + @"\" + s + ".del");
}
}
}
File.WriteAllText(timeName, DateTime.Now.ToString("yyyyMMdd"));
}
}
else
File.WriteAllText(timeName, DateTime.Now.ToString("yyyyMMdd"));
}
else
{
File.WriteAllText(timeName, DateTime.Now.ToString("yyyyMMdd"));
}
}u011128440 2013-08-19
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太谢谢你了..不过我有个地方不太明白
delLastTimeFile(); 这个方法是哪里来的 需要引用什么么？
tcmakebest 2013-08-17
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大家的想法基本一致，就是把图片内容转成字节数组上传，在服务器上再转回去。
其实这个方法适用于传任何文件，如果文件不太大的话，如果太大就要考虑分批上传了。
maysoft 2013-08-17
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都说的很详细了
以专业开发人员为伍 2013-08-17
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哼哼，aspx就是烂，不如ashx简洁。不过既然我给你胡乱写个aspx，就把它跑起来吧。对于这个aspx需要加入两行代码，让客户端（如果可以的话）尽量以html解析器来渲染，另外就是避免垃圾的aspx的额外内容。因此修改结果就是
<%@ Page Language="C#" %>
<!DOCTYPE html>
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
this.Response.ContentType = "text/html";
var files = this.Request.Files;
if (files.Count > 0)
{
var s1 = string.Format("您上传了{0}个文件，名叫 {1}，一共有 {2} 字节。", files.Count, files[0].FileName, files[0].ContentLength);
this.Response.Write(s1);
this.Response.Write("<br>");
var file = this.Server.MapPath("~/app_data/" + new System.IO.FileInfo(files[0].FileName).Name);
files[0].SaveAs(file);
this.Response.Write("已经保存文件 " + file);
this.Response.End();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
</body>
</html>using System;
using System.Net;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var result= new WebClient().UploadFile("http://localhost:2171/MySite/UploadFile.aspx", "C:\\MyDocs\\test\\设计文档.doc");
Console.WriteLine(Encoding.UTF8.GetString(result));
Console.ReadKey();
}
}
}
以专业开发人员为伍 2013-08-17
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我给你随便写个服务器端的服务程序吧，假设是aspx的，那么就是
<%@ Page Language="C#" %>
<!DOCTYPE html>
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
var files = this.Request.Files;
if (files.Count > 0)
{
var s1 = string.Format("您上传了{0}个文件，名叫 {1}，一共有 {2} 字节。", files.Count, files[0].FileName, files[0].ContentLength);
this.Response.Write(s1);
this.Response.Write("<br>");
var file = this.Server.MapPath("~/app_data/" + new System.IO.FileInfo(files[0].FileName).Name);
files[0].SaveAs(file);
this.Response.Write("已经保存文件 " + file);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
</body>
</html>以专业开发人员为伍 2013-08-17
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不需要自己写任何方法，因为.net框架有现成的方法。你可以写
new WebClient().UploadFile("http://localhost:2171/MySite/UploadFile.aspx", "C:\\MyDocs\\test\\设计文档.doc");
人生导师 2013-08-17
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华为黑名单 2013-08-16
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flag = service.UploadShopPictures(SourceFileCont, newfileName, type);
华为黑名单 2013-08-16
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客户端
byte[] SourceFileCont = new byte[hpf.ContentLength];//设置一个字节数组用于存放图片
System.IO.Stream fs = hpf.InputStream;
fs.Read(SourceFileCont, 0, hpf.ContentLength);//存入数据流中
string newfileName = CreateFileName() + hpf.FileName.Substring(hpf.FileName.Length - 4, 4);
string strExt = Path.GetExtension(hpf.FileName).ToLower();
华为黑名单 2013-08-16
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用字节流传输 和接收数据
public bool MakeImageByType(byte[] fs, string FileName, string categoryName , string type)
{
XmlDocument xml = new XmlDocument();
xml.Load(Common.GetMapPath("picture.xml"));
XmlNode node = xml.SelectSingleNode(string.Format("//pictures[@category='{0}']", categoryName));
string path = Common.GetMapPath(node.Attributes["path"].Value) + DateTime.Now.Year + DateTime.Now.Month + "\\";
string _webFilePathOri = ""; // 服务器端文件路径
string _webFilePath = ""; // 服务器端缩略图路径
int upImgWidth = 0;
int upImgHeight = 0;
try
{
//判断文件夹是否存在，如果不存在，则创建一个文件夹
if (!System.IO.Directory.Exists(path))
System.IO.Directory.CreateDirectory(path);
//定义并实例化一个内存流，以存放提交上来的字节数组。
MemoryStream m = new MemoryStream(fs);
//定义实际文件对象，保存上载的文件。
FileStream f = new FileStream(path + "\\" + FileName, FileMode.Create);
//FileStream f = new FileStream(FileName, FileMode.Create);
//把内内存里的数据写入物理文件
m.WriteTo(f);
m.Close();
f.Close();
f = null;
m = null;
_webFilePathOri = path + FileName; // 服务器端文件路径
foreach (XmlNode pNode in node.ChildNodes)
{
string pPath = Common.GetMapPath(pNode.Attributes["path"].Value) + DateTime.Now.Year + DateTime.Now.Month + "\\";
upImgWidth = Convert.ToInt32(pNode.Attributes["width"].Value);
upImgHeight = Convert.ToInt32(pNode.Attributes["height"].Value);
if (!System.IO.Directory.Exists(pPath))
System.IO.Directory.CreateDirectory(pPath);
_webFilePath = pPath + FileName;// 服务器端文件路径
MakeThumbnail(_webFilePathOri, _webFilePath, upImgWidth, upImgHeight, type);// 生成缩略图方法
}
return true;
}
catch
{
return false;
}
}
#endregion
c02645 2013-08-16
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Service
[WebMethod]
public string upfilebyte(byte[] b, ref string FileName)
{
try
{
MemoryStream m = new MemoryStream(b);
using (FileStream fs = File.Open(Server.MapPath(@"\upfile\" + FileName), FileMode.Create))
{
m.WriteTo(fs);
m.Close();
fs.Close();
delLastTimeFile();
return "上传成功!";
}
}
catch (Exception xx) { return xx.Message; }
}
[WebMethod]
public byte[] downfilebyte(ref string FileName)//下载
{
try
{
using (FileStream fs = File.Open(Server.MapPath(@"\upfile\" + FileName), FileMode.Open))
{
byte[] b = new byte[fs.Length];
fs.Read(b, 0, Convert.ToInt32(fs.Length));
fs.Close();
FileName = "";
return b;
}
}
catch (Exception xx) { FileName = xx.Message; return null; }
}using System;
using System.Collections.Generic;
using System.Text;
namespace zpgyMember.Service
{
/// <remarks/>
[System.Web.Services.WebServiceBindingAttribute(Name = "WebService_DomainSoap", Namespace = "http://zp365.com/")]
public class upfile : System.Web.Services.Protocols.SoapHttpClientProtocol
{
public upfile(string url)
{
Url = url;
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="b">字节</param>
/// <param name="FileName">文件名</param>
/// <returns></returns>
/// <remarks/>
[System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://zp365.com/upfilebyte", RequestNamespace = "http://zp365.com/", ResponseNamespace = "http://zp365.com/", Use = System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle = System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
public string upfilebyte(byte[] b,ref string FileName)
{
try
{
object[] results = this.Invoke("upfilebyte", new object[] { b ,FileName});
FileName = (string)results[1];
return results[0].ToString();
}
catch { return null; }
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="FileName">文件名</param>
/// <returns></returns>
/// <remarks/>
[System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://zp365.com/downfilebyte", RequestNamespace = "http://zp365.com/", ResponseNamespace = "http://zp365.com/", Use = System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle = System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
public byte[] downfilebyte(ref string FileName)
{
try
{
object[] results = this.Invoke("downfilebyte", new object[] {FileName });
FileName = (string)results[1];
return (byte[])results[0];
}
catch { return null; }
}
}
}private void bt_Click(object sender, EventArgs e)
{
if (lb.Items.Count >= 5)
{
MessageBox.Show("最多只能上传5个附件！"); return;
}
OpenFileDialog ofd = new OpenFileDialog();
ofd.RestoreDirectory = true;
ofd.FilterIndex = 1;
if (ofd.ShowDialog() == DialogResult.OK)
{
if (syn == null) syn = new zpgyMember.Service.upfile(Utils.upService + "/service/upfile.asmx");
using (Stream sm = ofd.OpenFile())
{
byte[] b = new byte[sm.Length];
string oldname = ofd.FileName;
oldname = oldname.Substring(oldname.LastIndexOf(@"\") + 1);
string newname = DateTime.Now.ToString("yyyyMMddHHmmss_fff") + oldname.Substring(oldname.LastIndexOf("."));
sm.Read(b, 0, Convert.ToInt32(sm.Length));
string msg = syn.upfilebyte(b, ref newname);
if (msg.StartsWith("上传成功"))
{
m.FileName += "|" + oldname;
m.FileName = m.FileName.Trim('|');
m.FileNewName += "|" + newname;
m.FileNewName = m.FileNewName.Trim('|');
bindLable(m.FileName.Split('|'), m.FileNewName.Split('|'));
} if (msg == null) msg = "网络不通";
sm.Dispose();
sm.Close();
MessageBox.Show(msg);
}
}
}bo3235 2013-08-16
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将图片 转成 byte[] 类型 增加配置的接收字符宽度就可以实现了
/// <summary>
/// 用户级文件保存
/// </summary>
/// <param name="p_filePath">文件保存的路径</param>
/// <param name="p_ufile">文件信息 （字节流）</param>
/// <returns>是否保存成功</returns>
private bool SaveFile(string p_filePath, byte[] p_ufile)
{
// code
FileStream p_fw = new FileStream(p_filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite);
p_fw.Write(p_ufile, 0, p_ufile.Length);
p_fw.Close();
}
<!-- 文件大小设定 -->
<httpRuntime maxRequestLength="1048576" executionTimeout="600"/>
</system.web>
夜色镇歌 2013-08-16
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