1

我正在从 Android 调用此 PHP 代码以将文件从 Android 传输到服务器，并且它工作得很好。

<?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());
        }
    }
}

它没有记录任何异常，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
}
4

2 回答 2

3

ASP.NET 应用程序中的默认最大文件大小限制为 4 MB。您可以通过在 web.config 中设置以下内容来配置应用程序以接受更大的大小

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

要了解有关配置文件大小限制的更多信息，请查看ASP.NET 中的大文件上传

于 2012-04-24T07:15:59.460 回答
2

试试这个：

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

其中 ~/Data/ 是您要保存文件的位置。

然后 + postedFile.FileName 你的文件名。

最好的祝福

于 2012-04-24T05:31:05.163 回答