Mercurial > dive4elements > river
view flys-client/src/main/java/de/intevation/flys/client/server/FileUploadServiceImpl.java @ 5622:b28a6d05e969
Add a new mechanism in mapfish print call to add arbitary data maps
Data properties are identified by starting with mapfish-data
and they are then split in info value pairs where info
can be the description of the information and value the value
of the information to be transported in the data map.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Tue, 09 Apr 2013 19:04:32 +0200 |
parents | 04ccec566689 |
children |
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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.IOException; import java.io.InputStream; import java.io.PrintWriter; 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) { 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); PrintWriter respWriter = resp.getWriter(); respWriter.write("<html><link href='FLYS.css' rel='stylesheet' type='text/css'>"); respWriter.write("<body><div style='font-face: Arial,Verdana,sans-serif; font-size: 11px'>"); if (result == null) { logger.warn("FileUpload service returned no result."); respWriter.write("FileUpload service returned no result"); } else { String status = result.getElementsByTagName("status") .item(0).getTextContent(); respWriter.write(status); } respWriter.write("</div></body></html>"); respWriter.flush(); return; } catch (ConnectionException ce) { logger.error(ce, ce); } catch (IOException e) { logger.error(e, e); } } protected Document createFileXML(HttpServletRequest req) { ServletFileUpload upload = new ServletFileUpload(); try{ FileItemIterator iter = upload.getItemIterator(req); while (iter.hasNext()) { FileItemStream item = iter.next(); 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; } }