一、客戶端

1.頁面

　 <form id="Form1" method="post" runat="server" enctype="multipart/form-data">

　　　　<input id="MyFile" type="file" runat="server" />

　　　　<br />

　　　　<br />

　　　　<asp:Button ID="Button1" runat="server" Text="上載文件" OnClick="Button1_Click"></asp:Button>

　　</form>

2.后臺

System.Web.HttpFileCollection oFiles = System.Web.HttpContext.Current.Request.Files;

].FileName;

);

].ContentLength];

System.IO.Stream fs = (System.IO.Stream)oFiles[].InputStream;

fs.Read(b, , oFiles[].ContentLength);

string postData = "data=" + HttpUtility.UrlEncode(Convert.ToBase64String(b));

var webclient = new WebClient();

webclient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");

byte[] byteArray = Encoding.UTF8.GetBytes(postData);

//byte[] buffer = webclient.UploadData("http://localhost/datapush/DataPush.ashx", "POST", byteArray);//ashx

byte[] buffer = webclient.UploadData("http://localhost/datapush/WebServiceDataPush.asmx/DataPush", "POST", byteArray);//asmx

var msg = Encoding.UTF8.GetString(buffer);

Response.Write(msg);

二、服務(wù)端

string msg = "";

byte[] filedata = Convert.FromBase64String(context.Request["data"]);

)

{

msg= "{\"code\":\"上傳的是空文件\"}";

}

)

{

msg = "{\"code\":\"圖片大小不能超過1M\"}";

}

].ToString() + filedata[].ToString();

")

{

fileextension = "gif";

}

")

{

fileextension = "jpg";

}

")

{

fileextension = "png";

}

")

{

fileextension = "bmp";

}

")

{

fileextension = "tif";

}

else

{

msg = "{\"code\":\"上傳的文件不是圖片\"}";

}

?

try

{

//保存圖片

string filename = Guid.NewGuid().ToString("D") + "." + fileextension;

System.IO.MemoryStream ms = new System.IO.MemoryStream(filedata);

System.IO.FileStream fs = new System.IO.FileStream(context.Server.MapPath("~/") + "/采集圖片/" + filename, System.IO.FileMode.Create);

ms.WriteTo(fs);

ms.Close();

fs.Close();

fs = null;

ms = null;

msg = "{\"code\":\"上傳圖片成功\"}";

}

catch (Exception exe)

{

msg = "{\"code\":\"" + exe.Message + "\"}";

}

?

轉(zhuǎn)載于:https://www.cnblogs.com/zxtceq/p/10715824.html

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