Java HTTP Read getContentLength(URLConnection con)

Description

get Content Length

License

Open Source License

Declaration

public static long getContentLength(URLConnection con) 

Method Source Code

//package com.java2s;
/*/*from www.j  a v  a  2  s .c o m*/
 * Created on Mar 21, 2006 3:09:00 PM
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

import java.net.*;

public class Main {
    public static long getContentLength(URLConnection con) {
        long res = con.getContentLength();

        if (res == -1) {

            try {
                String str = con.getHeaderField("content-length");

                if (str != null) {

                    res = Long.parseLong(str);
                }
            } catch (Throwable e) {

            }
        }

        return (res);
    }
}

Related

1. getContentEncoding(URL url)
2. getContentFromHttpGetBasicAuth(String urlString, String username, String password)
3. getContentFromURL(String sURL)
4. getContentFromURL(String url)
5. getContentLength(URL url)
6. getContents(String urlStr)
7. getContentTypeFromUrl(String urlname)
8. getContentTypeSpecified(URLConnection connection)
9. getContentWithPost(String urls, Map pv)