Mercurial > hg > LGServer

annotate src/main/java/de/mpiwg/gazetteer/rest/AbstractServletMethod.java @ 10:5610250d021a default tip

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SectionsIndex, we added a method to print the setting of the VM
author "jurzua <jurzua@mpiwg-berlin.mpg.de>"
date Thu, 19 Mar 2015 11:46:33 +0100
parents 7682c04c63a8
children
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1 package de.mpiwg.gazetteer.rest;
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2
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3 import java.io.ByteArrayOutputStream;
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4 import java.io.FileNotFoundException;
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5 import java.io.IOException;
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6 import java.io.InputStream;
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7 import java.io.OutputStream;
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8 import java.io.PrintWriter;
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9
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10 import javax.servlet.ServletException;
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11 import javax.servlet.http.HttpServletRequest;
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12 import javax.servlet.http.HttpServletResponse;
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13 import javax.servlet.http.Part;
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14
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15 import org.apache.commons.lang.StringUtils;
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16 import org.apache.log4j.Logger;
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17 import org.json.JSONObject;
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18
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19 import de.mpiwg.web.SessionBean;
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20
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21 public abstract class AbstractServletMethod {
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22
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23 private static Logger LOGGER = Logger.getLogger(AbstractServletMethod.class);
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24
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27 protected static void writeError(HttpServletResponse response, String message){
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28 try {
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29 JSONObject json = new JSONObject();
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30 json.put("status", "error");
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31 json.put("message", message);
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32
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33 PrintWriter out = response.getWriter();
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34 out.print(json.toString());
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35 out.flush();
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36 } catch (Exception e) {
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37 e.printStackTrace();
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38 }
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39 }
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40
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41 protected static Long getQueryLongParam(HttpServletRequest request, String paraName) {
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42 String value = request.getParameter(paraName);
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43 if (StringUtils.isNotEmpty(value)) {
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44 try {
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45 return Long.parseLong(value);
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46 } catch (Exception e) {
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47 }
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48 }
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49 return null;
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50 }
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51
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52 protected static Long getRequestLongPart(HttpServletRequest request, String partName) throws IOException,
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53 IllegalStateException, ServletException {
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54
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55 String value = getRequestPart(request, partName);
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56
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57 try {
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58 Long v = Long.parseLong(value);
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59 return v;
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60 } catch (Exception e) {
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61 }
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62
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63 return null;
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64
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65 }
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66
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67 protected static String getRequestPart(HttpServletRequest request, String partName) throws IOException,
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68 IllegalStateException, ServletException {
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69
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70 String partText = null;
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71 final Part filePart = request.getPart(partName);
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72
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73 if (filePart != null) {
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74 OutputStream out = null;
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75 InputStream filecontent = null;
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76
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77 try {
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78 out = new ByteArrayOutputStream();
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79 filecontent = filePart.getInputStream();
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80
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81 int read = 0;
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82 final byte[] bytes = new byte[1024];
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83
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84 while ((read = filecontent.read(bytes)) != -1) {
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85 out.write(bytes, 0, read);
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86 }
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87
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88 partText = out.toString();
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89
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90 } catch (FileNotFoundException fne) {
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91 LOGGER.info("Problems during file upload. Error: " + fne.getMessage());
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92 } finally {
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93 if (out != null) {
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94 out.close();
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95 }
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96 if (filecontent != null) {
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97 filecontent.close();
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98 }
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99 }
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100 }
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101
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102 return partText;
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103 }
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104
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105 }