文件上传页面中的“500 错误”ASP.NET

我正在从Android调用此PHP代码以将文件从Android传输到服务器，并且工作正常。

<?php
$target_path  = "./";
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);
if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
 echo "The file ".  basename( $_FILES['uploadedfile']['name']).
 " has been uploaded";
} else{
 echo "There was an error uploading the file, please try again!";
}
?>

但是我的服务器应用程序在 .net 中，我必须在 .net 中编写此代码我尝试编写.net版本代码，但它不起作用并返回500 internal server error。

public partial class uploadfiles : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            HttpFileCollection uploadFile = Request.Files;
            if (uploadFile.Count > 0)
            {
                HttpPostedFile postedFile = uploadFile[0];
                System.IO.Stream inStream = postedFile.InputStream;
                byte[] fileData = new byte[postedFile.ContentLength];
                inStream.Read(fileData, 0, postedFile.ContentLength);
                postedFile.SaveAs(Server.MapPath("Data") + "''" + postedFile.FileName);
            }        
        }
        catch (Exception ex)
        { 
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("Message : " +ex.Message);
            sb.AppendLine("Source : " + ex.Source);
            sb.AppendLine("StackTrace : " + ex.StackTrace);
            sb.AppendLine("InnerException : " + ex.InnerException);
            sb.AppendLine("ToString : " + ex.ToString());
            LogInToFile(sb.ToString());
        }
    }
}

它

不会记录任何异常，甚至我认为它没有到达第一行。我通过日志文件检查了它。因为它不起作用。请帮忙。

安卓代码如下

HttpURLConnection connection = null;
DataOutputStream outputStream = null;
DataInputStream inputStream = null;
String pathToOurFile = "/data/file_to_send.mp3";
String urlServer = "http://192.168.1.1/handle_upload.php";
String lineEnd = "'r'n";
String twoHyphens = "--";
String boundary =  "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;
try
{
FileInputStream fileInputStream = new FileInputStream(new File(pathToOurFile) );
URL url = new URL(urlServer);
connection = (HttpURLConnection) url.openConnection();
// Allow Inputs & Outputs
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
// Enable POST method
connection.setRequestMethod("POST");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
outputStream = new DataOutputStream( connection.getOutputStream() );
outputStream.writeBytes(twoHyphens + boundary + lineEnd);
outputStream.writeBytes("Content-Disposition: form-data; name='"uploadedfile'";filename='"" + pathToOurFile +"'"" + lineEnd);
outputStream.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// Read file
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0)
{
outputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
outputStream.writeBytes(lineEnd);
outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = connection.getResponseCode();
serverResponseMessage = connection.getResponseMessage();
fileInputStream.close();
outputStream.flush();
outputStream.close();
}
catch (Exception ex)
{
//Exception handling
}

<system.web>
  <httpRuntime maxRequestLength="20480" />
</system.web>

postedFile.SaveAs(Server.MapPath("~/Data/" + postedFile.FileName ));