Java URL Download downloadFile(String urlString)

Description

Downloads the contents from the given urlString, and stores it in a temporary directory.

License

Open Source License

Return

the absolute path of the file downloaded.

Declaration

public static String downloadFile(String urlString) throws MalformedURLException, IOException 

Method Source Code

//package com.java2s;
/**/* ww w.  j a va  2s .  co  m*/
 * The MIT License
 * Copyright (c) 2014 Ilkka Sepp?l?
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.io.BufferedReader;
import java.io.File;

import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.MalformedURLException;
import java.net.URL;

public class Main {
    /**
     * Downloads the contents from the given urlString, and stores it in a temporary directory.
     * @return the absolute path of the file downloaded.
     */
    public static String downloadFile(String urlString) throws MalformedURLException, IOException {
        System.out.println("Downloading contents from url: " + urlString);
        URL url = new URL(urlString);
        File file = File.createTempFile("promise_pattern", null);
        try (Reader reader = new InputStreamReader(url.openStream());
                BufferedReader bufferedReader = new BufferedReader(reader);
                FileWriter writer = new FileWriter(file)) {
            for (String line; (line = bufferedReader.readLine()) != null;) {
                writer.write(line);
                writer.write("\n");
            }
            System.out.println("File downloaded at: " + file.getAbsolutePath());
            return file.getAbsolutePath();
        } catch (IOException ex) {
            throw ex;
        }
    }
}

Related

1. downloadFile(String url, String fileName)
2. downloadFile(String url, String fileName)
3. downloadFile(String url, String filePath, File parent)
4. downloadFile(String url, String path)
5. downloadFile(String urlPath, File file)
6. downloadFile(String urlString, String filename)
7. downloadFile(String urlToDownload, File locationToStore)
8. downloadFile(URL fileUrl, File out)
9. downloadFile(URL theURL, String filePath)