For example, my front-end
<form method="post" action="/on_data">
<input type="file" name="valuename" enctype="multipart/form-data" multiple="multiple" > ;
<button>tijiao</button></form>
So how does the backend receive this picture? I found a lot of examples, and basically all of them used various frameworks (maybe I didn’t describe it clearly, but I couldn’t find the native ones anyway).
