Question

I don’t have the code available right now, but I’ll describe my situation and post code later on :). Basically, my problem is with uploading image to server via POST (from Java desktop application / client). I found some discussions here on this matter, but it either included using org.apache.commons.httpclient classes, and I have most of the code implemented using URLConnection class, OR with bugs in it. Check this selected answer to see what I followed in as much detail as possible: Using java.net.URLConnection to fire and handle HTTP requests

Anyways, I created php script on my local server that handles form with file upload. I checked it from one static html that was created along with .php. I then checked it without file upload, and it works ok.
It also works ok when I send plain text file. This looks like a problem related to encoding. Maybe some strange character is breaking my transfer?

As I said, I’ll include code if necessary later today, but I’m interested in your opinions / experience related to encoding images when sending via POST. Should I do something else, that’s not being mentioned in the link above.

QUESTION: do I need to use some kind of encoding to actual data when sending binary file in multipart message via http post?

Sorry for no code right now.

Cheers

Answer 1

As for your question: yes, you need to encode the file.

I would use HttpClient for this as it takes care of all those things for you. No need to reinvent the wheel. See How to upload a file using Java HttpClient library working with PHP for code.