[SOLVED] Does anyone know how to upload files into the ESP32 using a browser and AsyncWebServer ?

[GeorgeFlorian1]

Hello !

So I am trying to upload files to the ESP32 using this server and a browser and I can't figure it out...

I got this handler:

Code: Select all

void handleUpload(AsyncWebServerRequest *request, String filename, size_t index, uint8_t *data, size_t len, bool final){
  if(!index){
    logOutput((String)"UploadStart: " + filename);
  }
  for(size_t i=0; i<len; i++){
    Serial.write(data[i]);
  }
  if(final){
    logOutput((String)"UploadEnd: " + filename + "," + index+len);
  }
}

And this handler inside setup():

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      server.on("/upload", HTTP_POST, [](AsyncWebServerRequest *request) {
        request->send(200);
      }, handleUpload);

And this is in HTML:

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	<form method = "POST" action = /upload>
		<input type="file" name="data" data-multiple-caption="{count} files selected" multiple/>
		<input type="submit" name="upload" value="Upload" title = "Upload Files">
	</form>

I press on Upload button and it sends me to a blank page `request->send(200);`, but it doesn't upload my file.
I know I am doing something wrong, but I have no idea what. I couldn't find anything useful in the examples or on Google. Maybe because I don't know what to search for.

Any ideas ? What is missing ?

EDIT:

I have also tried the following handler and this time it returned "not found".

Code: Select all

      server.on("/upload", HTTP_POST, [](AsyncWebServerRequest *request) {
        if(request->hasParam("data", true, true) && SPIFFS.exists(request->getParam("data", true, true)->value()))
          request->send(200, "", "UPLOADED: "+request->getParam("data", true, true)->value());
      });

[rudi ;-)]

hi
it looks like you solved this for you,
also you added the option to delete files.
does it run now like you wanted?

best wishes
rudi

[GeorgeFlorian1]

hi
it looks like you solved this for you,
also you added the option to delete files.
does it run now like you wanted?

best wishes
rudi

Yes, it works wonders, thanks for asking !