一个多媒体图片上传的功能(winform),web同理，本例子实现存储路径至数据库
实现思路，用户上传本地多媒体数据至服务端，服务端接收用户传递的数据，在服务器上建立一个存储文件夹，存储用户多媒体数据，数据库存储数据在服务器上的绝对路径
一、先在服务器上建立一个文件上传后保存的路径文件夹，然后在代码config里配置一下
<!--文件上传保存路径-->
<add key="saveFileFolder" value="D:\多媒体数据\" />
二、获取照片的一些信息(FileUploadDTO)
using System; namespace Media { public class FileUploadDTO { /// <summary> /// 文件名 /// </summary> public string name;/// <summary> /// 文件大小 /// </summary> public int size;/// <summary> /// 扩展名 例：".txt" /// </summary> public string ext;
/// <summary>
/// 文件路径
/// </summary>
public string SAVEPATH;//传递的字节数 public byte[] Data; } }
三、存入数据库的信息(FileImageDTO)
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Media { public class FileImageDTO { /// <summary> /// 文件名 /// </summary> public string name { get; set; } /// <summary> /// 服务器上文件名 /// </summary> public string FILENAME { get; set; } /// <summary> /// 描述名 /// </summary> public string FILEDESC { get; set; } /// <summary> /// 文件主键 /// </summary> public string GUID { get; set; } /// <summary> /// 文件扩展名 /// </summary> public string FILEEXTNAME { get; set; } /// <summary> /// 创建时间 /// </summary> public System.DateTime CREATEDDATE { get; set; } /// <summary> /// 文件保存路径 /// </summary> public string SAVEPATH { get; set; } } }
四、多媒体上传帮助类(Mediaupload)
using System; using System.Collections.Generic; using System.Data; using System.IO; using System.Linq; using System.Runtime.Remoting.Messaging; using System.Text; using System.Threading.Tasks; namespace Media { public class Mediaupload { public void segmentReadUpload(FileUploadDTO file) { string filePath = System.Configuration.ConfigurationManager.AppSettings["saveFileFolder"];//指定文件上传位置 FileImageDTO dto = new FileImageDTO(); if (file.Offset == 0)//第一次传入文件 { DateTime dateTime = DateTime.Now; dto.name = file.name;//文件名 filePath = Path.Combine(filePath, "uploadFiles", dateTime.ToString("yyyy-MM-dd"));//上传后文件在服务器上存放文件文件夹的路径 checkDIR(filePath); dto.FILENAME = Guid.NewGuid().ToString() + file.ext;//上传至服务器后文件的名称 filePath = Path.Combine(filePath, dto.FILENAME); dto.CREATEDDATE = dateTime;//上传时间 dto.GUID = Guid.NewGuid().ToString();//文件唯一识别 dto.FILEEXTNAME = file.ext;//文件扩展名 dto.SAVEPATH = filePath;//上传后文件在服务器上的路径 } FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate);//打开文件 long offset = file.Offset; //file.Offset 文件偏移位置,表示从这个位置开始进行后面的数据添加 BinaryWriter writer = new BinaryWriter(fs);//初始化文件写入器 writer.Seek((int)offset, SeekOrigin.Begin);//设置文件的写入位置 writer.Write(file.Data);//写入数据 file.Offset = fs.Length;//返回追加数据后的文件位置 file.Data = null; Upload(dto);//信息写入数据库 writer.Close(); fs.Close(); } //检查目录，如果不存在则创建 private void checkDIR(string path) { if (!Directory.Exists(path)) Directory.CreateDirectory(path); } public void Upload(FileImageDTO DTO) { // StringBuilder sql = new StringBuilder(); string sql = string.Format("INSERT INTO FILEIMAGE(NAME,FILENAME,FILEDESC,GUID,FILEEXTNAME,SAVEPATH,CREATEDDATE) VALUES('{0}','{1}','{2}','{3}','{4}','{5}',to_date('{6}','yyyy-mm-dd hh24:MI:SS'))",DTO.name,DTO.FILENAME,DTO.FILEDESC,DTO.GUID,DTO.FILEEXTNAME,DTO.SAVEPATH,DTO.CREATEDDATE); SqlHelper.ExecuteNonQuery(sql, CommandType.Text, null);//增加 } } }
五、点击上传操作
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Drawing.Imaging; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace Media { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { FileUploadDTO dt = new FileUploadDTO(); OpenFileDialog f1 = new OpenFileDialog(); f1.Title = "文件上传"; f1.Filter = "All Files|*.*|课件(*.ppt)|*.ppt|教学大纲和授课计划(*.doc)|*.doc"; if (f1.ShowDialog() == DialogResult.OK) { FileInfo fileInfo = new FileInfo(f1.FileName); dt.name = fileInfo.Name;//文件名称 dt.ext = fileInfo.Extension;//扩展名 dt.size = (int)fileInfo.Length;//文件大小 Image image = Image.FromFile(fileInfo.FullName); // Bitmap bitmap = new Bitmap(f1.FileName); dt.Data = ImageToBytes(image); Mediaupload _fi = new Mediaupload(); _fi.segmentReadUpload(dt); } } /// <summary> /// 将照片转为byte[] /// </summary> /// <param name="image"></param> /// <returns></returns> public static byte[] ImageToBytes(Image image) { ImageFormat format = image.RawFormat; using (MemoryStream ms = new MemoryStream()) { image.Save(ms, format); return ms.ToArray(); } } } }
六、oracle数据库帮助类
using System; using System.Collections.Generic; using System.Data; using System.Data.OracleClient; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; namespace Media { public class SqlHelper { #region 样本 //标准连接 private static readonly string defaultConnectString = "Data Source=******;User Id=*****;Password=****;"; //标准链接 #endregion #region 变量 private static OracleConnection _con = null; public static string _constr = "Data Source=******;User Id=*****;Password=****;"; #endregion #region 属性 public static string constr { get { if (_constr == null || _constr.Equals(String.Empty)) { _constr = defaultConnectString; } return _constr; } set { _constr = value; } } /// <summary> /// 获取或设置数据库连接对象 /// </summary> public static OracleConnection Con { get { if (SqlHelper._con == null) { SqlHelper._con = new OracleConnection(); } if (SqlHelper._con.ConnectionString == null || SqlHelper._con.ConnectionString.Equals(string.Empty)) { SqlHelper._con.ConnectionString = SqlHelper.constr; } return SqlHelper._con; } set { SqlHelper._con = value; } } #endregion #region 方法 /// <summary> /// 执行并返回第一行第一列的数据库操作 /// </summary> /// <param name="commandText">Sql语句或存储过程名</param> /// <param name="commandType">Sql命令类型</param> /// <param name="param">Oracle命令参数数组</param> /// <returns>第一行第一列的记录</returns> public static int ExecuteScalar(string commandText, CommandType commandType, params OracleParameter[] param) { int result = 0; try { using (OracleCommand cmd = new OracleCommand(commandText, SqlHelper.Con)) { try { cmd.CommandType = commandType; if (param != null) { cmd.Parameters.AddRange(param); } SqlHelper.Con.Open(); string x = cmd.CommandText; result = Convert.ToInt32(cmd.ExecuteScalar()); } catch { result = -1; } } } finally { if (SqlHelper.Con.State != ConnectionState.Closed) { SqlHelper.Con.Close(); } } return result; } /// <summary> /// 执行不查询的数据库操作 /// </summary> /// <param name="commandText">Oracle语句或存储过程名</param> /// <param name="commandType">Oracle命令类型</param> /// <param name="param">Oracle命令参数数组</param> /// <returns>受影响的行数</returns> public static int ExecuteNonQuery(string commandText, CommandType commandType, params OracleParameter[] param) { int result = 0; try { using (OracleCommand cmd = new OracleCommand(commandText, SqlHelper.Con)) { try { //cmd.CommandType = commandType; if (param != null) { cmd.Parameters.AddRange(param); } SqlHelper.Con.Open(); result = cmd.ExecuteNonQuery(); } catch (Exception ex) { result = -1; } } } finally { if (SqlHelper.Con.State != ConnectionState.Closed) { SqlHelper.Con.Close(); } } return result; } /// <summary> /// 获取数据表 /// </summary> /// <param name="commandText">select命令</param> /// <param name="param">参数表</param> /// <returns></returns> public static DataTable GetDataTable(string commandText, params OracleParameter[] param) { DataTable result = new DataTable(); try { using (OracleCommand cmd = new OracleCommand(commandText, SqlHelper.Con)) { if (param != null) cmd.Parameters.AddRange(param); try { OracleDataAdapter adapter = new OracleDataAdapter(cmd); adapter.Fill(result); } catch (Exception ex) { result = null; } } } finally { if (SqlHelper.Con.State != ConnectionState.Closed) { SqlHelper.Con.Close(); } } return result; } public static int GetNextValueInSequence(string sequenceName) { if (ExecuteScalar("select count(*) from user_objects where OBJECT_NAME=:seqName", CommandType.Text, new OracleParameter(":seqName", sequenceName)) > 0) { return ExecuteScalar("select " + sequenceName + ".nextval from dual", CommandType.Text); } else { return -1; } } /// <summary> /// 事务模式执行多行非查询语句 /// </summary> /// <param name="commandText">sql语句</param> /// <param name="param">参数</param> /// <returns>受影响行数</returns> public static int ExecuteNonQueryTransaction(string commandText, List<OracleParameter[]> param) { int result = 0; try { using (OracleCommand cmd = new OracleCommand(commandText, SqlHelper.Con)) { SqlHelper.Con.Open(); cmd.Transaction = cmd.Connection.BeginTransaction(); try { foreach (OracleParameter[] par in param) { cmd.Parameters.Clear(); cmd.Parameters.AddRange(par); result += cmd.ExecuteNonQuery(); } cmd.Transaction.Commit(); } catch { result = -1; try { cmd.Transaction.Rollback(); } catch { result = -2; } } } } finally { if (SqlHelper.Con.State != ConnectionState.Closed) { SqlHelper.Con.Close(); } } return result; } /// <summary> /// 执行返回一条记录的泛型对象 /// </summary> /// <typeparam name="T">泛型类型</typeparam> /// <param name="reader">只进只读对象</param> /// <returns>泛型对象</returns> private static T ExecuteDataReader<T>(IDataReader reader) { T obj = default(T); try { Type type = typeof(T); obj = (T)Activator.CreateInstance(type);//从当前程序集里面通过反射的方式创建指定类型的对象 //obj = (T)Assembly.Load(SqlHelper._assemblyName).CreateInstance(SqlHelper._assemblyName + "." + type.Name);//从另一个程序集里面通过反射的方式创建指定类型的对象 PropertyInfo[] propertyInfos = type.GetProperties();//获取指定类型里面的所有属性 foreach (PropertyInfo propertyInfo in propertyInfos) { for (int i = 0; i < reader.FieldCount; i++) { string fieldName = reader.GetName(i); if (fieldName.ToLower() == propertyInfo.Name.ToLower()) { object val = reader[propertyInfo.Name];//读取表中某一条记录里面的某一列 if (val != null && val != DBNull.Value) { Type valType = val.GetType(); if (valType == typeof(float) || valType == typeof(double) || valType == typeof(decimal)) { propertyInfo.SetValue(obj, Convert.ToDouble(val), null); } else if (valType == typeof(int)) { propertyInfo.SetValue(obj, Convert.ToInt32(val), null); } else if (valType == typeof(DateTime)) { propertyInfo.SetValue(obj, Convert.ToDateTime(val), null); } else if (valType == typeof(string)) { propertyInfo.SetValue(obj, Convert.ToString(val), null); } } break; } } } } catch { throw; } return obj; } /// <summary> /// 执行返回一条记录的泛型对象 /// </summary> /// <typeparam name="T">泛型类型</typeparam> /// <param name="commandText">Oracle语句或存储过程名</param> /// <param name="commandType">Oracle命令类型</param> /// <param name="param">Oracle命令参数数组</param> /// <returns>实体对象</returns> public static T ExecuteEntity<T>(string commandText, CommandType commandType, params OracleParameter[] param) { T obj = default(T); try { using (OracleCommand cmd = new OracleCommand(commandText, SqlHelper.Con)) { cmd.CommandType = commandType; cmd.Parameters.AddRange(param); SqlHelper.Con.Open(); OracleDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection); while (reader.Read()) { obj = SqlHelper.ExecuteDataReader<T>(reader); } } } finally { if (SqlHelper.Con.State != ConnectionState.Closed) { SqlHelper.Con.Close(); } } return obj; } /// <summary> /// 执行返回多条记录的泛型集合对象 /// </summary> /// <typeparam name="T">泛型类型</typeparam> /// <param name="commandText">Oracle语句或存储过程名</param> /// <param name="commandType">Oracle命令类型</param> /// <param name="param">Oracle命令参数数组</param> /// <returns>泛型集合对象</returns> public static List<T> ExecuteList<T>(string commandText, CommandType commandType, params OracleParameter[] param) { List<T> list = new List<T>(); try { using (OracleCommand cmd = new OracleCommand(commandText, SqlHelper.Con)) { try { cmd.CommandType = commandType; if (param != null) { cmd.Parameters.AddRange(param); } SqlHelper.Con.Open(); OracleDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection); while (reader.Read()) { T obj = SqlHelper.ExecuteDataReader<T>(reader); list.Add(obj); } } catch (Exception ex) { list = null; } } } finally { if (SqlHelper.Con.State != ConnectionState.Closed) { SqlHelper.Con.Close(); } } return list; } #endregion } }
create table FILEIMAGE ( name VARCHAR2(60), filename VARCHAR2(60), filedesc VARCHAR2(200), guid VARCHAR2(50) not null, fileextname VARCHAR2(10), savepath VARCHAR2(100), createddate DATE )
web 实现思路，其他不用更改，只需要在传参哪里改为web实现获取这4个(文件名，扩展名，文件大小，文件转成byte[])数据传到后台即可