■最近有个涉及到邮件的活,需要把文件上传到...... 最近有个涉及到邮件的活,需要把文件上传到数据库,然后再把文件从数据库里面读出来,进行下载。 找了一些资料之后运用到项目当中。 数据库的结构如下: USE [EOffice] GO /**//****** 对象: Table [dbo].[Group_Files] 脚本日期: 07/20/2006 23:57:34 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[Group_Files]( [ID] [int] IDENTITY(1,1) NOT NULL, [FileName] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL CONSTRAINT [DF_Group_Files_FileName] DEFAULT (''), [FileBody] [image] NULL, [FileType] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL CONSTRAINT [DF_Group_Files_FileType] DEFAULT (''), CONSTRAINT [PK_Group_Files] PRIMARY KEY CLUSTERED ( [ID] ASC )WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY] ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] GO SET ANSI_PADDING OFF 然后我写了一个存储过程,代码如下: USE [EOffice] GO /**//****** 对象: StoredProcedure [dbo].[SendTo_Group_Email] 脚本日期: 07/20/2006 23:59:21 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO Create PROCEDURE [dbo].[SendTo_Group_Email] ( @Title varchar(200), @Content varchar(MAX), @Area varchar(max), @Sender varchar(50), @Dept varchar(50), @SendToUser varchar(50), @FileName varchar(200), @FileBody image, @FileType varchar(4) ) AS INSERT Group_Email (Title,[Content],Area,SendToUser,Dept,Sender,FileName,FileBody,FileType) VALUES (@Title,@Content,@Area,@SendToUser,@Dept,@Sender,@FileName,@FileBody,@FileType) 程序代码如下: SendEmail.aspx 1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SendEmail.aspx.cs" Inherits="GroupWork_SendEmail" %> 2 3 4 5 6 7 8 9 23 43 44 143 144 145 SendEmail.aspx.cs 1using System; 2using System.Data; 3using System.Configuration; 4using System.Collections; 5using System.Web; 6using System.Web.Security; 7using System.Web.UI; 8using System.Web.UI.WebControls; 9using System.Web.UI.WebControls.WebParts; 10using System.Web.UI.HtmlControls; 11 12using System.Data; 13using System.Data.SqlClient; 14using EOffice.Model; 15using EOffice.SqlServer; 16using System.IO; 17using System.Configuration; 18 19//using iWebSMS2000; 20[Serializable] 21public partial class GroupWork_SendEmail : System.Web.UI.Page 22{ 23 public SqlConnection conn; 24 //public iSMS2000 SMS; 25 //public DBstep.SMSClient2000 ObjiSMSClient2000; 26 protected void Page_Load(object sender, EventArgs e) 27 { 28 conn = new SqlConnection("SERVER=SERVER;UID=sa;PWD=8860;database=EOFFICE_SERVER;"); 29 30 } 31 protected void btnSubmit_Click(object sender, EventArgs e) 32 { 33 String strTitle = txtTitle.Text; 34 String strContent = txtContent.Text; 35 UserInfo info = (UserInfo)Session["EOfficeUserInfo"]; 36 String strUserName = info.UserName; 37 String strTmpDept = info.DeptId.ToString(); 38 39 String strUnitName = ConfigurationSettings.AppSettings["UnitName"]; 40 String strServerFileIndex = ""; //服务器端文件附件索引 41 String strClientFileIndex = ""; //客户端文件附件索引 42 43 String strRemote = HiddenField2.Value; 44 String[] strRemoteUser = strRemote.Split(','); 45 String strTmpUserName; 46 String strTmpServer; 47 Boolean bDone = false; 48 49 /**/////////上传多附件代码///////////// 50 //得到File表单元素 51 HttpFileCollection files = HttpContext.Current.Request.Files; 52 HttpPostedFile postedFile; 53 54 foreach (string strUser in strRemoteUser) 55 { 56 String[] strSplit = strUser.Split('/'); 57 strTmpUserName = strSplit[0]; 58 strTmpServer = strSplit[1]; 59 String strConnectString = ""; 60 String strAreaName = ""; 61 int nAreaID = 0; 62 String strDept = ""; 63 strClientFileIndex = ""; 64 SqlConnection connClient; 65 66 String strSQL = "Select * From Area Where AreaCode='" + strTmpServer + "'"; 67 SqlCommand cmd = new SqlCommand(strSQL, conn); 68 cmd.Connection.Open(); 69 using (SqlDataReader sdr = cmd.ExecuteReader()) 70 { 71 if (sdr.Read()) 72 { 73 strConnectString = sdr["ConnectString"].ToString(); 74 strAreaName = sdr["AreaName"].ToString(); 75 nAreaID = Convert.ToInt16(sdr["ID"]); 76 } 77 } 78 cmd.Connection.Close(); 79 80 strSQL = "Select * From MemberList Where UserName='" + strTmpUserName + "' And AreaID=" + nAreaID; 81 cmd = new SqlCommand(strSQL, conn); 82 cmd.Connection.Open(); 83 using (SqlDataReader sdr = cmd.ExecuteReader()) 84 { 85 if (sdr.Read()) 86 { 87 strDept = sdr["Dept"].ToString(); 88 } 89 } 90 cmd.Connection.Close(); 91 92 connClient = new SqlConnection(strConnectString); 93 94 for (int intCount = 0; intCount < files.Count; intCount++) 95 { 96 postedFile = files[intCount]; 97 98 if (postedFile.ContentLength > 0) 99 { 100 String strOldFilePath = postedFile.FileName; 101 String strFileName = strOldFilePath.Substring(strOldFilePath.LastIndexOf("\\") + 1); 102 103 //上传文件到服务器 104 //File1.PostedFile.SaveAs("c:\\Test\\" + DateTime.Now.ToString("yyyyMMddhhmmss") + strExtension); 105 106 //用于保存文件大小 107 int intDocLen; 108 //Stream用于读取上传数据 109 Stream objStream; 110 String strDocExt; 111 //上传文件具体内容 112 intDocLen = postedFile.ContentLength; 113 strDocExt = strOldFilePath.Substring(strOldFilePath.LastIndexOf(".") + 1); 114 115 byte[] Docbuffer = new byte[intDocLen]; 116 objStream = postedFile.InputStream; 117 118 119 //文件保存到缓存 120 121 //缓存将保存到数据库 122 objStream.Read(Docbuffer, 0, intDocLen); 123 124 string fileType = postedFile.ContentType; 125 126 127 //执行服务器端存储过程Send_Group_Email 128 if (!bDone) 129 { 130 cmd = new SqlCommand("Send_Group_Email", conn); 131 cmd.CommandType = CommandType.StoredProcedure; 132 cmd.Parameters.Add("@FileName ", SqlDbType.VarChar, 200); 133 cmd.Parameters.Add("@FileBody", SqlDbType.Image); 134 cmd.Parameters.Add("@FileType", SqlDbType.VarChar, 4); 135 cmd.Parameters.Add("@File_Index", SqlDbType.Int); 136 137 cmd.Parameters[0].Value = strFileName; 138 cmd.Parameters[1].Value = Docbuffer; 139 //cmd.Parameters[2].Value = strDocExt;] 140 cmd.Parameters[2].Value = fileType; 141 142 //cmd.Parameters.Add(new SqlParameter("@File_Index", SqlDbType.Int)); 143 cmd.Parameters[3].Direction = ParameterDirection.ReturnValue; 144 cmd.Connection.Open(); 145 cmd.ExecuteNonQuery(); 146 strServerFileIndex += cmd.Parameters[3].Value.ToString() + ","; 147 cmd.Connection.Close(); 148 } 149 150 //执行客户端存储过程Get_Upload_File 151 cmd = new SqlCommand("Get_Upload_File", connClient); 152 cmd.CommandType = CommandType.StoredProcedure; 153 cmd.Parameters.Add("@FileName ", SqlDbType.VarChar, 200); 154 cmd.Parameters.Add("@FileBody", SqlDbType.Image); 155 cmd.Parameters.Add("@FileType", SqlDbType.VarChar, 4); 156 cmd.Parameters.Add("@File_Index", SqlDbType.Int); 157 158 cmd.Parameters[0].Value = strFileName; 159 cmd.Parameters[1].Value = Docbuffer; 160 //cmd.Parameters[2].Value = strDocExt; 161 cmd.Parameters[2].Value = fileType; 162 163 //cmd.Parameters.Add(new SqlParameter("@File_Index", SqlDbType.Int)); 164 cmd.Parameters[3].Direction = ParameterDirection.ReturnValue; 165 cmd.Connection.Open(); 166 cmd.ExecuteNonQuery(); 167 strClientFileIndex += cmd.Parameters[3].Value.ToString() + ","; 168 cmd.Connection.Close(); 169 } 170 171 if (intCount.Equals(files.Count - 1)) 172 { 173 bDone = true; 174 } 175 } 176 177 strClientFileIndex = strClientFileIndex.Remove(strClientFileIndex.Length - 1); 178 179 strSQL = "Insert Into Group_Email (Title,Content,Area,SendToUser,Dept,Sender,Files_Index)"; 180 strSQL += " values ("; 181 strSQL += "'" + strTitle + "',"; 182 strSQL += "'" + strContent + "',"; 183 strSQL += "'" + strUnitName + "',"; 184 strSQL += "'" + strTmpUserName + "',"; 185 strSQL += "'" + strDept + "',"; 186 strSQL += "'" + strUserName + "',"; 187 strSQL += "'" + strClientFileIndex + "')"; 188 cmd = new SqlCommand(strSQL, connClient); 189 cmd.Connection.Open(); 190 cmd.ExecuteNonQuery(); 191 cmd.Connection.Close(); 192 193 String strTmpServerFileIndex = strServerFileIndex.Remove(strServerFileIndex.Length - 1); 194 195 strSQL = "Insert Into Group_Email_Sever (Title,Content,Area,SendToUser,Dept,Sender,Files_Index)"; 196 strSQL += " values ("; 197 strSQL += "'" + strTitle + "',"; 198 strSQL += "'" + strContent + "',"; 199 strSQL += "'" + strAreaName + "',"; 200 strSQL += "'" + strTmpUserName + "',"; 201 strSQL += "'" + strTmpDept + "',"; 202 strSQL += "'" + strUserName + "',"; 203 strSQL += "'" + strTmpServerFileIndex + "')"; 204 cmd = new SqlCommand(strSQL, conn); 205 cmd.Connection.Open(); 206 cmd.ExecuteNonQuery(); 207 cmd.Connection.Close(); 208 } 209 /**/////////结束上传多附件///////////// 210 Response.Redirect("../SuccessMsg.aspx"); 211 } 212} 213 下载文件的代码: DownFile.aspx DownFile.aspx.cs 1using System; 2using System.Data; 3using System.Configuration; 4using System.Collections; 5using System.Web; 6using System.Web.Security; 7using System.Web.UI; 8using System.Web.UI.WebControls; 9using System.Web.UI.WebControls.WebParts; 10using System.Web.UI.HtmlControls; 11 12using System.Data; 13using System.Data.SqlClient; 14using EOffice.Model; 15using EOffice.SqlServer; 16using System.IO; 17 18[Serializable] 19public partial class GroupWork_DownFile : System.Web.UI.Page 20{ 21 public SqlConnection conn; 22 public String strFileID; 23 public UserInfo info; 24 protected void Page_Load(object sender, EventArgs e) 25 { 26 strFileID = Request.QueryString["ID"]; 27 info = (UserInfo)Session["EOfficeUserInfo"]; 28 29 if (strFileID == null) 30 { 31 Response.Redirect("../ErrorMsg.aspx"); 32 } 33 34 DbLink db = new DbLink(); 35 conn = db.Connect(); 36 37 String strSQL = "Select * From Group_Files Where ID=" + strFileID; //+ " And SendToUser = '" + info.UserName + "'"; 38 SqlCommand cmd = new SqlCommand(strSQL, conn); 39 cmd.Connection.Open(); 40 using (SqlDataReader sdr = cmd.ExecuteReader()) 41 { 42 if (!sdr.Read()) 43 { 44 Response.Redirect("../ErrorMsg.aspx"); 45 } 46 else 47 { 48 Response.Clear(); 49 String strFileName = sdr["FileName"].ToString(); 50 Response.ContentType = "APPLICATION/OCTET-STREAM"; 51 Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(strFileName)); 52 Response.Buffer = true; 53 Response.BinaryWrite((byte[])sdr["FileBody"]); 54 55 //Response.Clear(); 56 //Response.ContentType = "application/octet-stream"; 57 /**/////Response.AddHeader("Content-Type", sdr["FileType"].ToString()); 58 //Response.BinaryWrite((byte[])sdr["FileBody"]); 59 } 60 } 61 //conn.Close(); 62 63 /**//* 64 SqlDataAdapter da = new SqlDataAdapter(strSQL, conn); 65 SqlCommandBuilder MyCB = new SqlCommandBuilder(da); 66 DataSet ds = new DataSet("MyImages"); 67 byte[] MyData = new byte[0]; 68 da.Fill(ds, "MyImages"); 69 DataRow myRow = ds.Tables["MyImages"].Rows[0]; 70 String strFileName = Convert.ToString(myRow["FileName"]); 71 MyData = (byte[])myRow["FileBody"]; 72 int ArraySize = new int(); 73 ArraySize = MyData.GetUpperBound(0); 74 FileStream fs = new FileStream(@"C:\\Download\" + strFileName, 75 FileMode.OpenOrCreate, FileAccess.Write); 76 fs.Write(MyData, 0, ArraySize); 77 fs.Close(); 78 */ 79 //Response.Write("下载文件" + strFileName + "成功!"); 80 } 81} 82 |
|小黑屋|最新主题|手机版|微赢网络技术论坛 ( 苏ICP备08020429号 )
GMT+8, 2024-9-30 03:23 , Processed in 0.191838 second(s), 12 queries , Gzip On, MemCache On.
Powered by Discuz! X3.5
© 2001-2023 Discuz! Team.