URLDownloader.java

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package org.gffs.network;
 
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
 
import org.gffs.io.IOUtils;
 
public abstract class URLDownloader
{
  static final private int CONNECTION_TIMEOUT = 1000 * 8;
  static final private int READ_TIMEOUT = 1000 * 8;
 
  static public InputStream connect(URL url) throws IOException
  {
    URLConnection connection = url.openConnection();
    connection.setConnectTimeout(CONNECTION_TIMEOUT);
    connection.setReadTimeout(READ_TIMEOUT);
    connection.connect();
    return connection.getInputStream();
  }
 
  static public void download(URL source, File target) throws IOException
  {
    InputStream in = null;
    OutputStream out = null;
 
    try {
      in = connect(source);
      out = new FileOutputStream(target);
      IOUtils.copy(in, out);
    } finally {
      IOUtils.close(in);
      IOUtils.close(out);
    }
  }
}