Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Get Content-length from downloading a file through URLConnection in Java

Posted on 2006-12-01
2
Medium Priority
?
626 Views
Last Modified: 2008-01-09
Hi,

I want to know how I can get the file size from a download size using URLConnection. What I do is:

public int getGZIPFileSize(String url){
        int fileSize = 0;
        try{

                URL url = new URL(url);
                URLConnection conn = url.openConnection();
               
                conn.setUseCaches(false);
                conn.setRequestProperty("Cookie",cookie);
                conn.setRequestProperty("Accept-Encoding","gzip");
               
                fileSize = conn.getContentLength();

           
            System.out.println("\n\n\n The file size = " +fileSize+ " \n\n\n");
           
        }catch(Exception e){
            e.printStackTrace();
        }
        return fileSize;
    }

It always returns -1. The file is successfully downloaded using IE from url.  Does anyone have any idea?

Thanks,
0
Comment
Question by:a122178
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 92

Accepted Solution

by:
objects earned 2000 total points
ID: 18057929
content length is not required to be set. -1 means read until eof.
0
 
LVL 3

Author Comment

by:a122178
ID: 18058120
Yes you are right. The content length may not be set on the server side.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Viewers learn about the third conditional statement “else if” and use it in an example program. Then additional information about conditional statements is provided, covering the topic thoroughly. Viewers learn about the third conditional statement …
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses

604 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question