StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POHow to upload a file using Java HttpClient library working with PHP
text
Body
copied!<p>I want to write Java application that will upload a file to the Apache server with PHP. The Java code uses Jakarta HttpClient library version 4.0 beta2:</p> <pre><code>import java.io.File; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.HttpVersion; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.FileEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.CoreProtocolPNames; import org.apache.http.util.EntityUtils; public class PostFile { public static void main(String[] args) throws Exception { HttpClient httpclient = new DefaultHttpClient(); httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); HttpPost httppost = new HttpPost("http://localhost:9002/upload.php"); File file = new File("c:/TRASH/zaba_1.jpg"); FileEntity reqEntity = new FileEntity(file, "binary/octet-stream"); httppost.setEntity(reqEntity); reqEntity.setContentType("binary/octet-stream"); System.out.println("executing request " + httppost.getRequestLine()); HttpResponse response = httpclient.execute(httppost); HttpEntity resEntity = response.getEntity(); System.out.println(response.getStatusLine()); if (resEntity != null) { System.out.println(EntityUtils.toString(resEntity)); } if (resEntity != null) { resEntity.consumeContent(); } httpclient.getConnectionManager().shutdown(); } } </code></pre> <p>The PHP file <code>upload.php</code> is very simple:</p> <pre><code><?php if (is_uploaded_file($_FILES['userfile']['tmp_name'])) { echo "File ". $_FILES['userfile']['name'] ." uploaded successfully.\n"; move_uploaded_file ($_FILES['userfile'] ['tmp_name'], $_FILES['userfile'] ['name']); } else { echo "Possible file upload attack: "; echo "filename '". $_FILES['userfile']['tmp_name'] . "'."; print_r($_FILES); } ?> </code></pre> <p>Reading the response I get the following result:</p> <pre><code>executing request POST http://localhost:9002/upload.php HTTP/1.1 </code></pre> <pre> HTTP/1.1 200 OK Possible file upload attack: filename ''. Array ( ) </pre> <p>So the request was successful, I was able to communicate with server, however PHP didn't notice the file - the method <code>is_uploaded_file</code> returned <code>false</code> and <code>$_FILES</code> variable is empty. I have no idea why this might happend. I have tracked HTTP response and request and they look ok:<br> request is:</p> <pre> POST /upload.php HTTP/1.1 Content-Length: 13091 Content-Type: binary/octet-stream Host: localhost:9002 Connection: Keep-Alive User-Agent: Apache-HttpClient/4.0-beta2 (java 1.5) Expect: 100-Continue ˙Ř˙ŕ..... the rest of the binary file... </pre> <p>and response:</p> <pre> HTTP/1.1 100 Continue HTTP/1.1 200 OK Date: Wed, 01 Jul 2009 06:51:57 GMT Server: Apache/2.2.8 (Win32) DAV/2 mod_ssl/2.2.8 OpenSSL/0.9.8g mod_autoindex_color PHP/5.2.5 mod_jk/1.2.26 X-Powered-By: PHP/5.2.5 Content-Length: 51 Keep-Alive: timeout=5, max=100 Connection: Keep-Alive Content-Type: text/html Possible file upload attack: filename ''.Array ( ) </pre> <p>I was testing this both on the local windows xp with xampp and remote Linux server. I have also tried to use previous version of HttpClient - version 3.1 - and the result was even more unclear, <code>is_uploaded_file</code> returned <code>false</code>, however <code>$_FILES</code> array was filled with proper data.</p>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload