前台代码如下：
| 代码如下 | 复制代码 |
|
<% @ Page Language="C#" CodeFile="UploadImg.aspx.cs" Inherits="NetAdmin_APicture_UploadImg" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>无标题页</title> <script type="text/javascript"> var i=1 function addFile() { if (i<8) {var str = '<BR> <input type="file" name="File" runat="server" style="width: 300px"/>描述:<input name="text" type="text" style="width: 150px" maxlength="20" />' document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str) } else { alert("您一次最多只能上传8张图片!") } i++ } </script> <link href="http://www.111cn.net/" rel="stylesheet" type="text/css" /> </head> <body style="background-image: url(../images/bg.jpg); text-align: center"> <form id="form1" runat="server"> <div> <table id="Table1" align="center" border="0" cellpadding="1" cellspacing="1" class="table" style="height: 58px" width="620"> <tr> <td align="center" background="../images/topbg1.jpg"> <font color="#0000ff" face="宋体" size="3"><strong>上传图片</strong></font></td> </tr> <tr> <td align="center"> </td> </tr> <tr> <td align="center"> <asp:Panel ID="Panel5" runat="server" Width="608px"> <table width="100%"> <tr> <td align="right" style="width: 100px"> </td> <td align="left"> 说明:点增加图片按钮可一次上传多张图片,可为每张图片写上一句不超过20个字的描述.单张图片大小不大于1024k</td> </tr> <tr> <td align="right" style="width: 100px"> 请选择图片:<br /> </td> <td align="left"><P id="MyFile"><INPUT onclick="addFile()" type="button" value="增加图片(Add)"><br /> <input type="file" name="File" runat="server" style="width: 300px"/> 描述:<input name="text" type="text" style="width: 150px" maxlength="20" /> </td> </tr> <tr> <td align="right" style="width: 100px"> 上传到的图库:</td> <td align="left"> <asp:DropDownList ID="ddlAlbum" runat="server" DataSourceID="SqlDataSource1" DataTextField="AlbumName" DataValueField="AlbumID"> </asp:DropDownList><asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:WebJakeCS %>" SelectCommand="SELECT [AlbumID], [AlbumName] FROM [WB_Album] ORDER BY [AlbumID] DESC"> </asp:SqlDataSource> </td> </tr> <tr> <td align="right" style="width: 100px"> </td> <td align="left"> <asp:Button ID="btnUpload" runat="server" Text="开始上传" OnClick="btnUpload_Click" /> </td> </tr> <tr> <td align="right" style="width: 100px"> </td> <td align="left"> <asp:Label ID="lblMessage" runat="server" Font-Bold="True" ForeColor="Red"></asp:Label></td> </tr> </table> </asp:Panel> </td> </tr> <tr> <td align="center"> <font face="宋体"></font><font face="宋体"> </font> </td> </tr> <tr> <td align="center"> <font face="宋体"></font> </td> </tr> </table> </div> </form> </body> </html> |
|
后台代码如下：
| 代码如下 | 复制代码 |
|
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; public partial class NetAdmin_APicture_UploadImg : System.Web.UI.Page ...{ protected void Page_Load(object sender, EventArgs e) ...{ } protected void btnUpload_Click(object sender, EventArgs e) ...{ lblMessage.Text = ""; lblMessage.Visible = false; System.Web.HttpFileCollection files = System.Web.HttpContext.Current.Request.Files; System.Text.StringBuilder strmsg = new System.Text.StringBuilder(""); string[] rd = Request.Form[1].Split(',');//获得图片描述的文本框字符串数组,为对应的图片的描述 string albumid=ddlAlbum.SelectedValue.Trim(); int ifile; for (ifile = 0; ifile < files.Count; ifile++) ...{ if (files[ifile].FileName.Length > 0) ...{ System.Web.HttpPostedFile postedfile = files[ifile]; if (postedfile.ContentLength / 1024 > 1024)//单个文件不能大于1024k ...{ strmsg.Append(Path.GetFileName(postedfile.FileName) + "---不能大于1024k<br>"); break; } string fex = Path.GetExtension(postedfile.FileName); if (fex != ".jpg" && fex != ".JPG" && fex != ".gif" && fex != ".GIF") ...{ strmsg.Append(Path.GetFileName(postedfile.FileName) + "---图片格式不对,只能是jpg或gif<br>"); break; } } } if (strmsg.Length <= 0)//说明图片大小和格式都没问题 ...{ //以下为创建图库目录 string dirname = "pic00" + ddlAlbum.SelectedValue.Trim(); string dirpath = Server.MapPath("http://www.iiwnet.com/php"); dirpath = dirpath + "" + dirname; if (Directory.Exists(dirpath) == false) ...{ Directory.CreateDirectory(dirpath); } Random ro = new Random(); int name = 1; for (int i = 0; i < files.Count; i++) ...{ System.Web.HttpPostedFile myFile = files[i]; string FileName = ""; string FileExtention = ""; string PicPath = ""; FileName = System.IO.Path.GetFileName(myFile.FileName); string stro=ro.Next(100,100000000).ToString()+name.ToString();//产生一个随机数用于新命名的图片 string NewName =DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString()+DateTime.Now.Millisecond.ToString()+stro; if (FileName.Length > 0)//有文件才执行上传操作再保存到数据库 ...{ FileExtention = System.IO.Path.GetExtension(myFile.FileName); string ppath = dirpath + "" + NewName + FileExtention; myFile.SaveAs(ppath); string FJname = FileName; PicPath = "PicBase" + "" + dirname + "" + NewName + FileExtention; } AddPicture(PicPath, rd[i], albumid);//将图片信息保存到数据库 if (name == 1)//如果为每次更新的第一张图片,则将它更新为象册的封面 ...{ upFirstimg(albumid, PicPath); } name = name + 1;//用来重命名规则的变量 } } else ...{ lblMessage.Text = strmsg.ToString(); lblMessage.Visible = true; } } private void AddPicture(string imgpath,string imgnote,string albumid) ...{ string sql = "insert WB_AlbumImges(ImgPath,ImgNote,AlbumID) values('"+imgpath+"','"+imgnote+"','"+albumid+"')"; DB mydb = new DB(); mydb.RunProc(sql); } private void upFirstimg(string albumid,string firstimg) ...{ string sql = "update WB_Album set FirstImg='"+firstimg+"' where AlbumID="+albumid; DB mydb = new DB(); mydb.RunProc(sql); } } |
|
时间： 2024-10-10 05:10:36