How to upload, upload file from tomcat server with username, password in swing
I want to make a program in swing that connects to tomcat server running locally. with username, password authentication, then user can upload the file to the server directory. ie.http: // Localhost: 8080 / uploadfiles. from the custom file path and the same as downloading to the local directory.
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Here's one of the possibilities: Download:
URL url = new URL("http://localhost:8080/uploadfiles");
HttpURLConnection con = (HttpURLConnection)url.openConnection();
try {
con.addRequestProperty("Authorization",
"Basic " + encode64(username + ":" + password));
InputStream in = con.getInputStream();
try {
OutputStream out = new FileOutputStream(outFile);
try {
byte buf[] = new byte[4096];
for (int n = in.read(buf); n > 0; n = in.read(buf)) {
out.write(buf, 0, n);
}
} finally {
out.close();
}
} finally {
in.close();
}
} finally {
con.disconnect();
}
Download:
URL url = new URL("http://localhost:8080/uploadfiles");
HttpURLConnection con = (HttpURLConnection)uploadUrl.openConnection();
try {
con.setDoOutput(true);
con.setRequestMethod("POST");
con.addRequestProperty("Authorization",
"Basic " + encode64(username + ":" + password));
OutputStream out = con.getOutputStream();
try {
InputStream in = new FileInputStream(inFile);
try {
byte buffer[] = new byte[4096];
for (int n = in.read(buffer); n > 0; n = in.read(buffer)) {
out.write(buffer, 0, n);
}
} finally {
in.close();
}
} finally {
out.close();
}
int code = con.getResponseCode();
if (code != HttpURLConnection.HTTP_OK) {
String msg = con.getResponseMessage();
throw new IOException("HTTP Error " + code + ": " + msg);
}
} finally {
con.disconnect();
}
Now, on the server side, you will need to distinguish between GET and POST requests and handle them accordingly. You will need a library to handle uploads like apache FileUpload
Oh, and on the client side you will need a library that Base64 encodes like apache commons codec
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