Re: Reading Web Data is S-L-O-W

From:

Hal Vaughan <hal@thresholddigital.com>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 12 Sep 2006 14:20:49 -0400

Message-ID:

<N8GdnYvp1uLlZ5vYnZ2dnUVZ_vqdnZ2d@comcast.com>

bikemh wrote:

Hal Vaughan wrote:

When I do this on Firefox, the file comes back so quickly I can't
time it -- almost instantaneous.

Hi. Are you sure you're not just reading from Firefox's cache?

I'm trying to read the same file in Java with the method at the bottom of
the post.

                inRead = new BufferedReader(new
                        InputStreamReader(ucPage.getInputStream()));
                resultPage = "";
                while ((sLine = inRead.readLine()) != null) {
// System.out.print(".");
                        resultPage = resultPage + sLine + "\n";
                }

try it this way, where conn is an HttpURLConnection object. Note that
you do need a large char array.

            int ln = (int)conn.getContentLength();
            char[] chars = new char[ln];
            InputStreamReader is = new
InputStreamReader(conn.openInputStream());
            is.read(chars, 0, ln);

            String s = new String(chars);

Are you getting the connection by something like this?

urlPage = new URL(sURL);
conn = urlPage.openConnection();

That's how I got it in the early part of the part of the method. I tried
what you have, but I kept getting a -1 for ln (I printed out the result
after I got ln) and java.lang.NegativeArraySizeException from the next
line.

Hal