PDF转换成二进制字符串写入 HTTP 输出流

文件转换成二进制字符串写入HTTP输出流

1 protected void Page_Load(object sender, EventArgs e) 2 { 3 try 4 { 5 string path = "Tett.PDF"; //获取文件名 6 path = Server.MapPath(path); //获取物理文件路径 7 if (File.Exists(path) == false) 8 throw new Exception("找不到PDF文件"); 9 FileStream fs = File.Open(path, FileMode.Open); 10 byte[] buffer = new byte[fs.Length]; 11 fs.Read(buffer, 0, buffer.Length); 12 fs.Close(); 13 Response.ContentType = "application/pdf"; 14 Response.AddHeader("content-disposition", "filename=pdf"); 15 Response.AddHeader("content-length", buffer.Length.ToString()); 16 Response.BinaryWrite(buffer); 17 } 18 catch (Exception exp) 19 { 20 throw new Exception("错误", exp); 21 } 22 finally 23 { 24 Response.Flush(); 25 Response.Close(); 26 Response.End(); 27 } 28

获取HTTP传入的实体内容保存文件

 1 string path = "Test.PDF";

2                                 path = Server.MapPath(path);

3                                 if (File.Exists(path) == false)

4                                     throw new Exception("找不到PDF文件");

5                                 using (var inputStream = Request.InputStream)

6                                 {

7                                     using (var flieStream = new FileStream(path, FileMode.Create))

8                                     {

9     //从当前流中读取所有字节并将其写入到目标流中

10                                         inputStream.CopyTo(flieStream);

11                                     }

12

二进制转换成

/// <summary>

2         /// 二进制转换成

3         /// </summary>

4         /// <param name="Bytes"></param>

5         /// <returns></returns>

6         public static Bitmap BytesToBitmap(byte[] Bytes)

7         {

8             MemoryStream stream = null;

9             try

10             {

11                 stream = new MemoryStream(Bytes);

12                 return new Bitmap((Image)new Bitmap(stream));

13             }

14             catch (ArgumentNullException ex)

15             {

16                 throw ex;

17             }

18             catch (ArgumentException ex)

19             {

20                 throw ex;

21             }

22             finally

23             {

24                 stream.Close();

25             }

26         }

1 /// <summary>

2         /// 转换成二进制

3         /// </summary>

4         /// <param name="Bitmap"></param>

5         /// <returns></returns>

6         public static byte[] BitmapToBytes(Bitmap Bitmap)

7         {

8             MemoryStream ms = null;

9             try

10             {

11                 ms = new MemoryStream();

12                 Bitmap.Save(ms, Bitmap.RawFormat);

13                 byte[] byteImage = new Byte[ms.Length];

14                 byteImage = ms.ToArray();

15                 return byteImage;

16             }

17             catch (ArgumentNullException ex)

18             {

19                 throw ex;

20             }

21             finally

22             {

23                 ms.Close();

24             }

25         }

流转换成文件

 1 using (FileStream fs = new FileStream(path, FileMode.Create))

2 {

3     byte[] bytes = new byte[stream.Length];

4     int numBytesRead = 0;

5     int numBytesToRead = (int)stream.Length;

6     stream.Position = 0;

7     while (numBytesToRead > 0)

8     {

9         int n = stream.Read(bytes, numBytesRead, Math.Min(numBytesToRead, int.MaxValue));

10         if (n <= 0)

11         {

12             break;

13         }

14         fs.Write(bytes, numBytesRead, n);

15         numBytesRead += n;

16         numBytesToRead -= n;

17     }

18     fs.Close();

19 }

   文件转换成流

1 /// <summary>

2 /// 从文件读取 Stream

3 /// </summary>

4 public Stream FileToStream(string fileName)

5 {            

6     // 打开文件

7     FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);

8     // 读取文件的 byte[]

9     byte[] bytes = new byte[fileStream.Length];

10     fileStream.Read(bytes, 0, bytes.Length);

11     fileStream.Close();

12     // 把 byte[] 转换成 Stream

13     Stream stream = new MemoryStream(bytes);

14     return stream;

15 }
posted @ 2014-07-08 14:01  x_window  阅读(1024)  评论(0)    收藏  举报