Upload a file using HTTP put in Java

UploadFile.java

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

public class UploadFileMain {

	public static void main(String[] args) {
		URLConnection urlconnection = null;
		try {
			File file = new File("C:/file.txt");
			URL url = new URL("http://server:8080/path/file.txt");
			urlconnection = url.openConnection();
			urlconnection.setDoOutput(true);
			urlconnection.setDoInput(true);

			if (urlconnection instanceof HttpURLConnection) {
				((HttpURLConnection) urlconnection).setRequestMethod("PUT");
				((HttpURLConnection) urlconnection).setRequestProperty("Content-type", "text/plain");
				((HttpURLConnection) urlconnection).connect();
			}

			BufferedOutputStream bos = new BufferedOutputStream(urlconnection.getOutputStream());
			BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
			int i;
			// read byte by byte until end of stream
			while ((i = bis.read()) > 0) {
				bos.write(i);
			}
			bis.close();
			bos.close();
			System.out.println(((HttpURLConnection) urlconnection).getResponseMessage());
		} catch (Exception e) {
			e.printStackTrace();
		}
		try {

			InputStream inputStream;
			int responseCode = ((HttpURLConnection) urlconnection).getResponseCode();
			if ((responseCode >= 200) && (responseCode <= 202)) {
				inputStream = ((HttpURLConnection) urlconnection).getInputStream();
				int j;
				while ((j = inputStream.read()) > 0) {
					System.out.println(j);
				}

			} else {
				inputStream = ((HttpURLConnection) urlconnection).getErrorStream();
			}
			((HttpURLConnection) urlconnection).disconnect();

		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

question reagrading upload file. your code seems that it cant upload what i actually want to upload?

Thanks for this bud, But this doesn't work if you want to upload excel file. since you're treating everything as a string.
To upload Excel or CSV need to follow below code instead, where data is written as a byte array.

int i;
byte[] buffer = new byte[4096];
while ((i = bis.read(buffer)) > 0) {
bos.write(buffer, 0, i);
}

Thanks a lot this is the only way that solved my problem, I tried many libs but none worked. THANKS, THANKS.

Thanks

the above code is giving me error 'bad request'

This is great, thanks for helping! One quick comment, I think this code has a bug. BufferedInputStream documentation says read() function returns a -1 at the end of the stream.

So the code snippet uploading the file should update to -

    BufferedOutputStream bos = new BufferedOutputStream(connection.getOutputStream());
    BufferedInputStream bis = new BufferedInputStream(new FileInputStream(new File(imageFilePath)));

    int i;
    // read byte by byte until end of stream
    while ((i = bis.read()) > -1) {
        bos.write(i);
    }

Or else your code will stop when it reads a 0 in the file.