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POMethods for downloading files from a URL in Java
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copied!<p>I want to download a binary file from a webserver which is running on a embedded device. That file can be downloaded manually after a basic http authentication by using that URL: <code>http://10.10.10.10/config.bin</code>... Now i want to automate this process with a simple Java application. By using the basic java tools i managed to download the file:</p> <pre><code>URL mlrrl = new URL(url); HttpURLConnection con = (HttpURLConnection) mlrUrl.openConnection(); con.setRequestMethod("GET"); con.setAllowUserInteraction(false); con.setDoInput(true); con.setDoOutput(true); con.setConnectTimeout(10000); con.setRequestProperty("Authorization", "Basic " + authStringEnc); InputStream stream = con.getInputStream(); BufferedInputStream in = new BufferedInputStream(stream); FileOutputStream file = new FileOutputStream("configDown.bin"); BufferedOutputStream out = new BufferedOutputStream(file); int i; while ((i = in.read()) != -1) { out.write(i); } out.flush(); </code></pre> <p>That seemed to work fine! In comparison with the manually (by Browser-Webinterface) downloaded file the generated file have the same length, but after opening both binaries with a hex-editor they were different. </p> <p>My questions: </p> <ol> <li>Any ideas why the hex-codes are different? (Maybe missing connection properties?)</li> <li>There is a copyUrlToFile-Method in the apache.commons package. Is it possible to use it with basic http authentification, as a alternative?</li> <li>Are there other java libs or tools for downloading files from urls?</li> </ol>

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