Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/FileUploadServiceImpl.java @ 4215:c179cd02177d
Logout the current user
Add code to the logout button to remove the current user from the session and to
redirect the browser window to the login page.
Part of flys/issue916 (Logout: "Abmelden" Knopf mit Funktion belegen)
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Tue, 23 Oct 2012 09:59:16 +0200 |
parents | b9433322fcaf |
children | 02cf2b1dff84 |
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package de.intevation.flys.client.server; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; import de.intevation.artifacts.httpclient.exceptions.ConnectionException; import de.intevation.artifacts.httpclient.http.HttpClient; import de.intevation.artifacts.httpclient.http.HttpClientImpl; import java.io.ByteArrayOutputStream; import java.io.InputStream; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.codec.binary.Base64; import org.apache.commons.fileupload.FileItemIterator; import org.apache.commons.fileupload.FileItemStream; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.log4j.Logger; import org.w3c.dom.Document; import org.w3c.dom.Element; public class FileUploadServiceImpl extends HttpServlet { private static final Logger logger = Logger.getLogger(FileUploadServiceImpl.class); @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) { processPost(req, resp); } protected void processPost(HttpServletRequest req, HttpServletResponse resp) { logger.debug("handling post request."); String url = getServletContext().getInitParameter("server-url"); Document request = createFileXML(req);; if (request == null) { return; } HttpClient client = new HttpClientImpl(url); try { Document result = client.callService(url, "fileupload", request); if (result == null) { logger.warn("FileUpload service returned no result."); } return; } catch (ConnectionException ce) { logger.error(ce, ce); } } protected Document createFileXML(HttpServletRequest req) { ServletFileUpload upload = new ServletFileUpload(); try{ FileItemIterator iter = upload.getItemIterator(req); while (iter.hasNext()) { FileItemStream item = iter.next(); String name = item.getFieldName(); InputStream stream = item.openStream(); // Process the input stream ByteArrayOutputStream out = new ByteArrayOutputStream(); int len; byte[] buffer = new byte[stream.available()]; while ((len = stream.read(buffer, 0, buffer.length)) != -1) { out.write(buffer, 0, len); } buffer = Base64.encodeBase64(buffer); String b64File = new String(buffer); Document fileDoc = XMLUtils.newDocument(); ElementCreator ec = new ElementCreator(fileDoc, null, null); Element root = ec.create("upload"); Element id = ec.create("artifact-uuid"); id.setTextContent(req.getParameter("uuid")); Element data = ec.create("data"); data.setTextContent(b64File); fileDoc.appendChild(root); root.appendChild(id); root.appendChild(data); return fileDoc; } } catch(Exception e){ logger.debug("Failed to create xml document containing the file."); logger.debug(e, e); } return null; } }