Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/FileUploadServiceImpl.java @ 8203:238fc722f87a

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sed 's/logger/log/g' src/**/*.java
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 05 Sep 2014 13:19:22 +0200
parents 97d055c24ad4
children 5e38e2924c07
rev   line source
5861
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.server;
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10
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11 import org.dive4elements.artifacts.common.utils.XMLUtils;
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12 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
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13 import org.dive4elements.artifacts.httpclient.exceptions.ConnectionException;
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14 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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15 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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16
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17 import java.io.ByteArrayOutputStream;
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18 import java.io.IOException;
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19 import java.io.InputStream;
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20 import java.io.PrintWriter;
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21
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22 import javax.servlet.http.HttpServlet;
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23 import javax.servlet.http.HttpServletRequest;
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24 import javax.servlet.http.HttpServletResponse;
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25
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26 import org.apache.commons.codec.binary.Base64;
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27 import org.apache.commons.fileupload.FileItemIterator;
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28 import org.apache.commons.fileupload.FileItemStream;
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29 import org.apache.commons.fileupload.servlet.ServletFileUpload;
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30 import org.apache.log4j.Logger;
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31 import org.w3c.dom.Document;
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32 import org.w3c.dom.Element;
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33
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34 public class FileUploadServiceImpl
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35 extends HttpServlet
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36 {
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37 private static final Logger log = Logger.getLogger(FileUploadServiceImpl.class);
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38
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39 @Override
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40 protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
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41 log.debug("handling post request.");
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42
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43 String url = getServletContext().getInitParameter("server-url");
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44
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45 Document request = createFileXML(req);
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46
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47 if (request == null) {
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48 return;
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49 }
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50 HttpClient client = new HttpClientImpl(url);
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51
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52 try {
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53 Document result = client.callService(url, "fileupload", request);
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54
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55 resp.setContentType("text/html");
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56
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57 PrintWriter respWriter = resp.getWriter();
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58 respWriter.write("<html><body><div style='font-face: Arial,Verdana,sans-serif; font-size: 11px'>");
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59
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60 if (result == null) {
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61 log.warn("FileUpload service returned no result.");
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62 respWriter.write("FileUpload service returned no result");
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63 }
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64 else {
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65 String status = result.getElementsByTagName("status")
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66 .item(0).getTextContent();
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67 respWriter.write(status);
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68 }
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69
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70 respWriter.write("</div></body></html>");
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71 respWriter.flush();
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72
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73 return;
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74 }
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75 catch (ConnectionException ce) {
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76 log.error(ce, ce);
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77 }
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78 catch (IOException e) {
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79 log.error(e, e);
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80 }
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81 }
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82
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83
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84 protected Document createFileXML(HttpServletRequest req) {
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85 ServletFileUpload upload = new ServletFileUpload();
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86
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87 try{
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88 FileItemIterator iter = upload.getItemIterator(req);
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89
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90 while (iter.hasNext()) {
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91 FileItemStream item = iter.next();
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92 InputStream stream = item.openStream();
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93
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94 // Process the input stream
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95 ByteArrayOutputStream out = new ByteArrayOutputStream();
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96 int len, cnt = 0;
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97 byte[] buffer = new byte[stream.available()];
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98 while ((len = stream.read(buffer, 0, buffer.length)) != -1) {
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99 out.write(buffer, 0, len);
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100 cnt += len;
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101 }
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102
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103 buffer = Base64.encodeBase64(out.toByteArray());
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104 String b64File = new String(buffer);
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105 log.debug("FileUploadServiceImpl.createFileXML(): " + cnt
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106 + "/" + b64File.length()
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107 + " bytes (orig/base64) file to be uploaded");
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108
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109 Document fileDoc = XMLUtils.newDocument();
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110
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111 ElementCreator ec = new ElementCreator(fileDoc, null, null);
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112 Element root = ec.create("upload");
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113 Element id = ec.create("artifact-uuid");
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114 id.setTextContent(req.getParameter("uuid"));
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115
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116 Element data = ec.create("data");
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117 data.setTextContent(b64File);
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118
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119 fileDoc.appendChild(root);
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120 root.appendChild(id);
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121 root.appendChild(data);
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122
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123 return fileDoc;
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124 }
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125 }
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126 catch(Exception e){
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127 log.debug("Failed to create xml document containing the file.");
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128 log.debug(e, e);
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129 }
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130 return null;
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131 }
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132 }
http://dive4elements.wald.intevation.org