knowledge/org.argeo.support.odk/src/org/argeo/support/odk/servlet/OdkSubmissionServlet.java

   1 package org.argeo.support.odk.servlet;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.io.StringWriter;
   6
   7 import javax.servlet.ServletException;
   8 import javax.servlet.http.HttpServlet;
   9 import javax.servlet.http.HttpServletRequest;
  10 import javax.servlet.http.HttpServletResponse;
  11 import javax.servlet.http.Part;
  12 import javax.xml.transform.OutputKeys;
  13 import javax.xml.transform.Transformer;
  14 import javax.xml.transform.TransformerException;
  15 import javax.xml.transform.TransformerFactory;
  16 import javax.xml.transform.stream.StreamResult;
  17 import javax.xml.transform.stream.StreamSource;
  18
  19 import org.apache.commons.logging.Log;
  20 import org.apache.commons.logging.LogFactory;
  21
  22 /** Receives a form submission. */
  23 public class OdkSubmissionServlet extends HttpServlet {
  24         private static final long serialVersionUID = 7834401404691302385L;
  25         private final static Log log = LogFactory.getLog(OdkSubmissionServlet.class);
  26
  27         private final static String XML_SUBMISSION_FILE = "xml_submission_file";
  28
  29         @Override
  30         protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  31                 for (Part part : req.getParts()) {
  32                         if (log.isDebugEnabled())
  33                                 log.debug("Part: " + part.getName() + ", " + part.getContentType());
  34                 }
  35                 Part xmlSubmissionPart = req.getPart(XML_SUBMISSION_FILE);
  36                 if (xmlSubmissionPart == null)
  37                         throw new ServletException("No " + XML_SUBMISSION_FILE + " part");
  38                 try (InputStream in = xmlSubmissionPart.getInputStream();) {
  39                         // pretty print
  40                         Transformer transformer = TransformerFactory.newInstance().newTransformer();
  41                         transformer.setOutputProperty(OutputKeys.INDENT, "yes");
  42                         transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
  43                         StreamResult result = new StreamResult(new StringWriter());
  44                         StreamSource source = new StreamSource(in);
  45                         transformer.transform(source, result);
  46                         String xmlString = result.getWriter().toString();
  47                         System.out.println(xmlString);
  48                 } catch (TransformerException e) {
  49                         e.printStackTrace();
  50                 }
  51
  52                 resp.setContentType("text/xml; charset=utf-8");
  53                 resp.setHeader("X-OpenRosa-Version", "1.0");
  54                 resp.setDateHeader("Date", System.currentTimeMillis());
  55                 resp.setIntHeader("X-OpenRosa-Accept-Content-Length", 1024 * 1024);
  56                 resp.setStatus(201);
  57                 resp.getWriter().write("<OpenRosaResponse xmlns=\"http://openrosa.org/http/response\">"
  58                                 + "<message>Form Received!</message>" + "</OpenRosaResponse>");
  59
  60         }
  61 }