c实现webservice上传下载文件

C#实现WebService上传下载文件

WebService代码：

///

///

上传文件

///

///

文件的byte[]

///

上传文件的路径

///

上传文件名字

///

[WebMethod]

public bool

UploadFile(byte[] fs, string path, string fileName) {

bool flag = false;

try

{

//获取上传案例图片路径

path = Server.MapPath(path);

if (!Directory.Exists(path))

{

Directory.CreateDirectory(path);

}

//定义并实例化一个内存流，以存放提交上来的字节数组。MemoryStream m = new MemoryStream(fs);

//定义实际文件对象，保存上载的文件。

FileStream f = new FileStream(path + "\" + fileName, FileMode.Create);

//把内内存里的数据写入物理文件

m.WriteTo(f);

m.Close();

f.Close();

f = null;

m = null;

flag = true;

}

catch (Exception ex) {

flag = false;

}

return flag;

}

[WebMethod(Description = "下载服务器站点文件，传递文件相对路径")]

public

byte[] DownloadFile(string strFilePath, string path)

{

FileStream fs = null;

string CurrentUploadFolderPath =

HttpContext.Current.Server.MapPath(path);

string CurrentUploadFilePath = CurrentUploadFolderPath

+ "\" +

strFilePath;

if (File.Exists(CurrentUploadFilePath))

{

try

{

///打开现有文件以进行读取。

fs = File.OpenRead(CurrentUploadFilePath); int b1;

System.IO.MemoryStream tempStream = new System.IO.MemoryStream();

while ((b1 = fs.ReadByte()) != -1) {

tempStream.WriteByte(((byte)b1)); }

return tempStream.ToArray();

}

catch (Exception ex)

{

return new byte[0]; }

finally

{

fs.Close();

}

}

else

{

return new byte[0];

}

客户端代码：

///

/// 上传图片附件///

///

private bool UploadImage()

{

bool flag = true;

string path = @"C:\Documents and

Settings\Administrator\My

Documents\My

Pictures\10121312156cf4a761c504fe69.jpg";//本地路径byte[] bytes = GetBytesByPath(path);//获取文件byte[]

string uploadPath = "image";//上传服务器文件夹路径

string fileName = "img18.jpg";//文件名称

try

{

localhost.Service s = new

WindowsFormsApplication1.localhost.Service();

if (s.UploadFile(bytes, uploadPath, fileName)) { flag = true; }

else { flag = false; }

}

catch

{

flag = false; }

return flag; }

///

/// 根据文件的路径获取图片的byte[]

///

///

///

public static byte[] GetBytesByPath(string path)

{

FileStream fs = new FileStream(path, FileMode.Open,

FileAccess.Read);

BinaryReader br = new BinaryReader(fs); byte[] bytes = br.ReadBytes((int)fs.Length); fs.Flush();

fs.Close();

return bytes;

}

private void DownFile()

{

localhost.Service s = new

WindowsFormsApplication1.localhost.Service();

byte[] bs = s.DownloadFile("img18.jpg","image");

FileStream stream=new FileStream(@"C:\Documents and Settings\Administrator\My Documents\My Pictures\18.jpg", FileMode.CreateNew);

stream.Write(bs,0,bs.Length);

stream.Flush();

stream.Close(); }