django视图中的图像处理函数未保存android客户端上载的PNG图像
我有一个django视图函数,是我为处理使用http post上传的图像而编写的 方法:view.pydjango视图中的图像处理函数未保存android客户端上载的PNG图像,android,python,django,curl,image-uploading,Android,Python,Django,Curl,Image Uploading,我有一个django视图函数,是我为处理使用http post上传的图像而编写的 方法:view.py @csrf_exempt def upload_image(request): print "image file" if request.method == 'POST': print "posted" myfile = request.FILES['myfile'] filename = myfile.name
@csrf_exempt
def upload_image(request):
print "image file"
if request.method == 'POST':
print "posted"
myfile = request.FILES['myfile']
filename = myfile.name
print filename
fd = open('/home/ubuntu/server/smartDNA/media/documents/' + filename, 'wb+',00777)
print "open file object"
imagefile='/media/documents/'+filename
imdoc=ImageDocuments(docfile=imagefile)
imdoc.save()
for chunk in myfile.chunks():
fd.write(chunk)
fd.close()
return HttpResponse("OK")
else:
return HttpResponse("Not Ok")
然后我在这里写了一段android代码:
private class UploadImageTast extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
int response= uploadFile(params[0]+"/pradeep.png");
Log.e("Uploading Image", "Let see the response code: "+response);
return Integer.toString(response);
}
@Override
protected void onPostExecute(String result) {
if(result=="200"){
Log.i("Upload Result", "image uploaded successfuly");
}else{
Log.i("Upload Result", "image upload un-successfuly");
}
}
}
public int uploadFile(String sourceFileUri) {
String upLoadServerUri = "http://ec2-72-44-51-113.compute-1.amazonaws.com:8001/upload_image/";
String fileName = sourceFileUri;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File Does not exist");
return 0;
}
try { // open a URL connection to the view
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection(); // Open a HTTP connection to the URL
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available(); // create a buffer of maximum size
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necessary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
if(serverResponseCode == 200){
Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + "success");
}
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
ex.printStackTrace();
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
e.printStackTrace();
Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e);
}
return serverResponseCode;
}
但我在log cat上获得了状态500。我的处理程序似乎无法处理http post中的多部分上载。但是,当我使用curl命令以相同的方法上传图像时,它会工作,并且我能够上传图像。我成功使用并上载图像的CURL命令:
curl "http://ec2-72-44-51-113.compute-1.amazonaws.com:8001/upload_image/" -F myfile=@"/home/pradeep/Desktop/Deeksha.PNG"
在我看来,django的功能是否需要任何修改,或者是否需要任何其他方式。这样我就可以将png图像文件上传到django服务器。您正在上传一个
上传的\u文件
这里:
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
这里需要一个myfile
:
myfile = request.FILES['myfile']
您的文件位于request.FILES['uploaded\u file']
中
myfile = request.FILES['myfile']