HTTP POST

package com.orangomango.httppostrequest;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.nio.file.Files;

public class Main {

    public static String username;
    public static String password;

    public static void checkParam(String param) {
        try {
            URL url = new URL("http://orangomango.000webhostapp.com/account/user_data.php?" + param);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            //conn.setRequestMethod("GET");

            try {
                BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                reader.lines().forEach(line -> System.out.println(line));
                reader.close();
            } catch (IOException ioe) {
            }
        } catch (Exception e) {
        }
    }

    public static void uploadFile(File path, File binaryFile) {

        try {
            String url = "http://orangomango.000webhostapp.com/upload.php";
            String charset = "UTF-8";
            File textFile = new File(path.getAbsolutePath());
            String boundary = "84493"; //Long.toHexString(System.currentTimeMillis()); // Just generate some unique random value.
            String CRLF = "\n"; // Line separator required by multipart/form-data.

            URLConnection connection = new URL(url).openConnection();
            connection.setDoOutput(true);
            connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);

            try (
                OutputStream output = connection.getOutputStream();
                BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(output, charset));
            ) {
                // Send post data
                writer.write("--" + boundary + CRLF);
                writer.write("Content-Disposition: form-data; name=\"test\""+CRLF);
                writer.append(CRLF);
                writer.flush();
                writer.write("okiedokie"+CRLF);
                writer.flush();

                // Send text file.
                writer.write("--" + boundary + CRLF);
                //writer.write(CRLF);
                writer.write("Content-Disposition: form-data; name=\"upFile\"; filename=\"" + textFile.getName() + "\"" + CRLF);
                //writer.write(CRLF);
                writer.write("Content-Type: text/plain; charset=" + charset + CRLF);
                //writer.write(CRLF); // Text file itself must be saved in this charset!
                writer.write(CRLF);
                writer.flush();
                Files.copy(textFile.toPath(), output);
                output.flush(); // Important before continuing with writer!
                writer.write(CRLF);
                writer.flush(); // CRLF is important! It indicates end of boundary

                // Send binary file.
                writer.append("--" + boundary).append(CRLF);
                writer.append("Content-Disposition: form-data; name=\"binaryFile\"; filename=\"" + binaryFile.getName() + "\"").append(CRLF);
                writer.append("Content-Type: "+URLConnection.guessContentTypeFromName(binaryFile.getName())).append(CRLF);
                writer.append("Content-Transfer-Encoding: binary").append(CRLF);
                writer.append(CRLF).flush();
                Files.copy(binaryFile.toPath(), output);
                output.flush(); // Important before continuing with writer!
                writer.append(CRLF).flush(); // CRLF is important! It indicates end of boundary.


                // End of multipart/form-data.
                writer.write("--" + boundary + "--");
                writer.write(CRLF);
                writer.flush();

                // Output file
                try {
                    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
                    reader.lines().forEach(line -> System.out.println(line));
                    reader.close();
                } catch (IOException ioe) {
                }

                // Request is lazily fired whenever you need to obtain information about response.
                int responseCode = ((HttpURLConnection) connection).getResponseCode();
                System.out.println(responseCode); // Should be 200
            }
        } catch (Exception e){}
    }

    public static void main(String[] args) {
        try {
            URL url = new URL("http://orangomango.000webhostapp.com/account/account.php");

            try {
                BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
                System.out.print("Username: ");
                username = reader.readLine();
                System.out.print("Password: ");
                password = reader.readLine();
                reader.close();
            } catch (IOException ioe){}

            String postData = String.format("username=%s&password=%s", username, password);
            System.out.println("Username? ");
            checkParam("method=user&param="+username);
            System.out.println("Password? ");
            checkParam("method=password&param="+username+"+"+password);


            // Upload files

            File f = new File("C:\\Users\\Khloud\\Documents\\NetBeansProjects\\httpPostRequest\\src\\main\\java\\com\\orangomango\\httppostrequest\\test.wld");
            System.out.println("F exists? "+f.exists());
            uploadFile(f, new File("C:\\Users\\Khloud\\Documents\\NetBeansProjects\\httpPostRequest\\src\\main\\java\\com\\orangomango\\httppostrequest\\test.jpg"));

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            conn.setDoOutput(true);

            try (BufferedWriter dos = new BufferedWriter(new OutputStreamWriter(conn.getOutputStream()))) {
                dos.write(postData);
            }

            int responsecode = conn.getResponseCode();
            System.out.println(responsecode);
        } catch (Exception e) {
        }
    }
}