Golang Converting image.Image to []byte

Question

Having trouble converting an image.Image to []byte. The problem spot is wrapped in dotted lines.

image_data, err := mybucket.Get(key)

if err != nil {
    panic         


        

Answer 1

You want a bytes.Buffer, not a bufio.Writer. bytes.Buffer is used when you need a writer that writes to memory. bufio.Writer just caches data in memory before forwarding it to another writer.

buf := new(bytes.Buffer)
err := jpeg.Encode(buf, new_image, nil)
send_s3 := buf.Bytes()