Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/FileUploadServiceImpl.java @ 8856:5e38e2924c07 3.2.x

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Fix code style.
author Tom Gottfried <tom@intevation.de>
date Thu, 18 Jan 2018 20:12:01 +0100
parents 238fc722f87a
children 0a5239a1e46e
rev   line source
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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(
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38 FileUploadServiceImpl.class);
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39
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40 @Override
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41 protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
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42 log.debug("handling post request.");
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43
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44 String url = getServletContext().getInitParameter("server-url");
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45
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46 Document request = createFileXML(req);
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47
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48 if (request == null) {
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49 return;
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50 }
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51 HttpClient client = new HttpClientImpl(url);
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52
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53 try {
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54 Document result = client.callService(url, "fileupload", request);
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55
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56 resp.setContentType("text/html");
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57
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58 PrintWriter respWriter = resp.getWriter();
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59 respWriter.write(
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60 "<html><body><div style='font-face: Arial,Verdana,sans-serif; "
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61 + "font-size: 11px'>");
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62
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63 if (result == null) {
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64 log.warn("FileUpload service returned no result.");
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65 respWriter.write("FileUpload service returned no result");
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66 }
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67 else {
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68 String status = result.getElementsByTagName("status")
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69 .item(0).getTextContent();
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70 respWriter.write(status);
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71 }
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72
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73 respWriter.write("</div></body></html>");
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74 respWriter.flush();
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75
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76 return;
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77 }
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78 catch (ConnectionException ce) {
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79 log.error(ce, ce);
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80 }
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81 catch (IOException e) {
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82 log.error(e, e);
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83 }
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84 }
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85
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86
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87 protected Document createFileXML(HttpServletRequest req) {
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88 ServletFileUpload upload = new ServletFileUpload();
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89
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90 try{
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91 FileItemIterator iter = upload.getItemIterator(req);
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92
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93 while (iter.hasNext()) {
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94 FileItemStream item = iter.next();
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95 InputStream stream = item.openStream();
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96
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97 // Process the input stream
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98 ByteArrayOutputStream out = new ByteArrayOutputStream();
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99 int len, cnt = 0;
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100 byte[] buffer = new byte[stream.available()];
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101 while ((len = stream.read(buffer, 0, buffer.length)) != -1) {
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102 out.write(buffer, 0, len);
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103 cnt += len;
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104 }
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105
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106 buffer = Base64.encodeBase64(out.toByteArray());
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107 String b64File = new String(buffer);
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108 log.debug("FileUploadServiceImpl.createFileXML(): " + cnt
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109 + "/" + b64File.length()
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110 + " bytes (orig/base64) file to be uploaded");
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111
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112 Document fileDoc = XMLUtils.newDocument();
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113
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114 ElementCreator ec = new ElementCreator(fileDoc, null, null);
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115 Element root = ec.create("upload");
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116 Element id = ec.create("artifact-uuid");
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117 id.setTextContent(req.getParameter("uuid"));
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118
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119 Element data = ec.create("data");
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120 data.setTextContent(b64File);
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121
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122 fileDoc.appendChild(root);
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123 root.appendChild(id);
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124 root.appendChild(data);
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125
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126 return fileDoc;
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127 }
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128 }
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129 catch(Exception e){
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130 log.debug("Failed to create xml document containing the file.");
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131 log.debug(e, e);
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132 }
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133 return null;
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134 }
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135 }
http://dive4elements.wald.intevation.org