一、WebFrom 图片上传

概述 一、图片上传 using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Security.Cryptography;using Syst  一、图片上传 @H_404_8@

using System;using System.Collections.Generic;using System.linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Security.Cryptography;using System.Web.Security;using System.IO;using System.Data.sqlClIEnt;using System.Data;namespace Demo.Web{    public partial class show : System.Web.UI.Page    {        protected voID Page_Load(object sender,EventArgs e)        {         }         public string  SlIDeShow()        {            BLL.slIDe SlIDe = new BLL.slIDe();            DataSet sdr = SlIDe.GetList(5);            string navshow = "";            if (sdr != null)  //表格形式显示数据            {                try                {                     foreach (DaTarow mDr in sdr.tables[0].Rows)                    {                        navshow += "<tr>";                        navshow += "<td><a href=‘" + mDr[3].ToString() + "‘ target=‘_blank‘><img src=‘" + mDr[4].ToString() + "‘ wIDth=‘100‘ /></a></td>";                        navshow += "<td>" + mDr[1].ToString() + "</td>";                        navshow += "<td>" + mDr[3].ToString() + "</td>";                        navshow += "<td align=‘center‘>" + mDr[2].ToString() + "</td>";                        navshow += "<td align=‘center‘><a href=‘editshow.aspx?ID=" + mDr[0].ToString() + "‘>编辑</a> | <a href=‘delshow.aspxID=1‘>删除</a></td>";                        navshow += "</tr>";                    }                }                catch (sqlException ex)                {                    Response.Write(ex.ToString());                }                finally                {                    ;                }            }            return navshow;                   }        protected voID submit_Click(object sender,EventArgs e)        {            Boolean fileOk = false;            if (pic_upload.Hasfile)//验证是否包含文件            {                //取得文件的扩展名,并转换成小写                string fileExtension = Path.GetExtension(pic_upload.filename).Tolower();                //验证上传文件是否图片格式                fileOk = IsImage(fileExtension);                if (fileOk)                {                    //对上传文件的大小进行检测，限定文件最大不超过8M                    if (pic_upload.Postedfile.ContentLength < 8192000)                    {                        string filepath = "/images/";                        if (Directory.Exists(Server.MapPath(filepath)) == false)//如果不存在就创建file文件夹                        {                            Directory.CreateDirectory(Server.MapPath(filepath));                        }                        string virpath = filepath + CreatePasswordHash(pic_upload.filename,4) + fileExtension;//这是存到服务器上的虚拟路径                        string mappath = Server.MapPath(virpath);//转换成服务器上的物理路径                        pic_upload.Postedfile.SaveAs(mappath);//保存图片                        //显示图片                        pic.ImageUrl = virpath;                        //清空提示                        lbl_pic.Text = "上传图片成功！";//上传图片成功                        //下面是添加图片的整体信息                        string slIDename = SlIDename.Text;                        string slIDeimg = pic.ImageUrl;                        string slIDeurl = SlIDeUrl.Text;                        string slIDddescrition = SlIDeSort.Text;                        Model.slIDe ModeSlIDe = new Model.slIDe();                        ModeSlIDe.Title = slIDename;                        ModeSlIDe.img = pic.ImageUrl;                        ModeSlIDe.url = slIDeurl;                        ModeSlIDe.descrition = slIDddescrition;                        BLL.slIDe SlIDe = new BLL.slIDe();                                      if (Convert.ToBoolean(SlIDe.Add(ModeSlIDe)))                        {                            Response.Write("<script>alert(‘完整的添加图片成功!‘)</script>");                                               }                        else                        {                            Response.Write("<script>alert(‘失败!‘)</script>");                        }                    }                    else                    {                        pic.ImageUrl = "";                        lbl_pic.Text = "文件大小超出8M！请重新选择！";                    }                }                else                {                    pic.ImageUrl = "";                    lbl_pic.Text = "要上传的文件类型不对！请重新选择！";                }            }            else            {                pic.ImageUrl = "";                lbl_pic.Text = "请选择要上传的图片！";            }        }        /// <summary>        /// 验证是否指定的图片格式        /// </summary>        /// <param name="str"></param>        /// <returns></returns>        public bool IsImage(string str)        {            bool isimage = false;            string thestr = str.Tolower();            //限定只能上传jpg和gif图片            string[] allowExtension = { ".jpg",".gif",".bmp",".png" };            //对上传的文件的类型进行一个个匹对            for (int i = 0; i < allowExtension.Length; i++)            {                if (thestr == allowExtension[i])                {                    isimage = true;                    break;                }            }            return isimage;        }        /// <summary>        /// 创建一个指定长度的随机salt值        /// </summary>        public string CreateSalt(int saltLenght)        {            //生成一个加密的随机数            RNGCryptoServiceProvIDer rng = new RNGCryptoServiceProvIDer();            byte[] buff = new byte[saltLenght];            rng.GetBytes(buff);            //返回一个Base64随机数的字符串            return Convert.ToBase64String(buff);        }        /// <summary>        /// 返回加密后的字符串        /// </summary>        public string CreatePasswordHash(string pwd,int saltLenght)        {            string strSalt = CreateSalt(saltLenght);            //把密码和Salt连起来            string saltAndPwd = String.Concat(pwd,strSalt);            //对密码进行哈希            string hashenPwd = FormsAuthentication.HashPasswordForStoringInConfigfile(saltAndPwd,"sha1");            //转为小写字符并截取前16个字符串            hashenPwd = hashenPwd.Tolower().Substring(0,16);            //返回哈希后的值            return hashenPwd;        }    }}

HTML

@H_404_8@

<%@ Page Language="C#" autoEventWireup="true" CodeBehind="show.aspx.cs" inherits="Demo.Web.show" %><!DOCTYPE aspx PUBliC "-//W3C//DTD Xaspx 1.0 Transitional//EN" "http://www.w3.org/TR/xaspx1/DTD/xaspx1-Transitional.dtd"><aspx xmlns="http://www.w3.org/1999/xaspx"><head runat="server">   <Meta http-equiv="Content-Type" content="text/aspx; charset=UTF-8"><Title>Douaspx 管理中心 - 首页幻灯广告 </Title><Meta name="copyright" content="Douco Design." /><link href="CSS/public.CSS" rel="stylesheet" type="text/CSS"><script type="text/JavaScript" src="Js/jquery.min.Js"></script><script type="text/JavaScript" src="Js/global.Js"></script><style>    #div_pic    {        wIDth: 40%;        height: 40%;        margin-bottom: 5%;    }    #div_pic img    {        wIDth: 100%;        height: auto;    }    .style2    {        wIDth: 227px;    }    .style3    {        wIDth: 112px;    }    .style5    {        wIDth: 125px;    }    .style6    {        wIDth: 138px;    }</style></head><body>    <form ID="form1" runat="server"><div ID="dcWrap"> <div ID="dchead"> <div ID="head">  <div class="logo"><a href="index.aspx"><img src="images/dclogo.gif" alt="logo"></a></div>  <div class="nav">   <ul>    <li class="M"><a href="JavaScript:voID(0);" class="topAdd">新建</a>     <div class="drop mtopad"><a href="product.aspx?rec=add">商品</a> <a href="article.aspx?rec=add">文章</a> <a href="nav.aspx?rec=add">自定义导航</a> <a href="show.aspx">首页幻灯</a> <a href="page.aspx?rec=add">单页面</a> <a href="manager.aspx?rec=add">管理员</a> <a href="link.aspx"></a> </div>    </li>    <li><a href="../index.aspx" target="_blank">查看站点</a></li>    <li><a href="index.aspx?rec=clear_cache">清除缓存</a></li>    <li><a href="http://help.douco.com" target="_blank">帮助</a></li>    <li class="noright"><a href="module.aspx">Douaspx+</a></li>   </ul>   <ul class="navRight">    <li class="M noleft"><a href="JavaScript:voID(0);">您好，admin</a>     <div class="drop mUser">      <a href="manager.aspx?rec=edit&ID=1">编辑我的个人资料</a>      <a href="manager.aspx?rec=cloud_account">设置云账户</a>     </div>    </li>    <li class="noright"><a href="login.aspx?rec=logout">退出</a></li>   </ul>  </div> </div></div><!-- dchead 结束 --> <div ID="dcleft"><div ID="menu"> <ul class="top">  <li><a href="index.aspx"><i class="home"></i><em>管理首页</em></a></li> </ul> <ul>  <li><a href="system.aspx"><i class="system"></i><em>系统设置</em></a></li>  <li><a href="nav.aspx"><i class="nav"></i><em>自定义导航栏</em></a></li>  <li class="cur"><a href="show.aspx"><i class="show"></i><em>首页幻灯广告</em></a></li>  <li><a href="page.aspx"><i class="page"></i><em>单页面管理</em></a></li> </ul>    <ul>  <li><a href="article_category.aspx"><i class="articleCat"></i><em>文章分类</em></a></li>  <li><a href="article.aspx"><i class="article"></i><em>文章列表</em></a></li> </ul>   <ul class="bot">  <li><a href="backup.aspx"><i class="backup"></i><em>数据备份</em></a></li>  <li><a href="mobile.aspx"><i class="mobile"></i><em>手机版</em></a></li>  <li><a href="theme.aspx"><i class="theme"></i><em>设置模板</em></a></li>  <li><a href="manager.aspx"><i class="manager"></i><em>网站管理员</em></a></li>  <li><a href="manager.aspx?rec=manager_log"><i class="managerLog"></i><em> *** 作记录</em></a></li> </ul></div></div> <div ID="dcMain">   <!-- 当前位置 --><div ID="urHere">Douaspx 管理中心<b>></b><strong>首页幻灯广告</strong> </div>   <div class="mainBox imgModule">    <h3>首页幻灯广告</h3>    <table wIDth="100%" border="0" cellpadding="8" cellspacing="0" class="tableBasic">    <tr>       <th>添加幻灯</th>       <th>幻灯列表</th>     </tr>     <tr>      <td wIDth="350" valign="top">       <form action="show.aspx?rec=insert" method="post" enctype="multipart/form-data">        <table wIDth="100%" border="0" cellpadding="8" cellspacing="0" class="tableOnebor">         <tr>          <td><b>幻灯名称</b><asp:TextBox ID="SlIDename" size="20" class="inpMain"  runat="server"></asp:TextBox>                 </td>         </tr>         <tr>          <td><b>幻灯图片</b>          <div ID="prevIEw">     </div>       <div ID="div_pic"><asp:Image ID="pic" runat="server"          ImageUrl="~/Images/photo_icon.png" /></div> <asp:fileUpload ID="pic_upload" runat="server" /><asp:Label ID="lbl_pic" runat="server" class="pic_text"></asp:Label>                  </td>                  </tr>         <tr>          <td><b>链接地址</b>            <asp:TextBox  name="show_link" value="" size="40" class="inpMain" runat="server"                   ID="SlIDeUrl"></asp:TextBox>          </td>         </tr>         <tr>          <td><b>描述</b>        <asp:TextBox ID="SlIDeSort" value="简介说明" size="20" class="inpMain" runat="server"></asp:TextBox>          </td>         </tr>         <tr>          <td>             <input type="hIDden" name="token" value="79db104d" />            <asp:button ID="submit"  class="btn" runat="server" Text="提交"                   onclick="submit_Click"></asp:button>                     </td>         </tr>        </table>       </form>      </td>      <td valign="top">       <table wIDth="100%" border="0" cellpadding="8" cellspacing="0" class="tableOnebor">        <tr>         <td class="style6">幻灯片</td>         <td class="style3">幻灯片名称</td>         <td class="style5">跳转的链接</td>         <td align="center" class="style2">描述</td>         <td wIDth="80" align="center"> *** 作</td>        </tr>             <%= SlIDeShow()%>                              </table>      </td>     </tr>    </table>   </div> </div> <div class="clear"></div><div ID="dcFooter"> <div ID="footer">  <div class="line"></div>  <ul>   版权所有 © 2013-2015 网络科技有限公司，并保留所有权利。  </ul> </div></div><!-- dcFooter 结束 --><div class="clear"></div> </div>    </form></body></aspx>

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