Mercurial > hg > IndexMetaContextualizer

annotate src/main/java/de/mpiwg/indexmeta/web/servlet/JSONInterface.java @ 7:bc57f2660b0f

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implementation of web service
author Jorge Urzua <jurzua@mpiwg-berlin.mpg.de>
date Fri, 12 Apr 2013 17:48:42 +0200
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1 package de.mpiwg.indexmeta.web.servlet;
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2
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3 import java.io.IOException;
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4 import java.io.PrintWriter;
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5 import java.io.UnsupportedEncodingException;
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6 import java.util.Map;
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7 import java.util.Map.Entry;
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8
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9 import javax.servlet.Servlet;
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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
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14 import org.apache.commons.lang.StringUtils;
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15 import org.apache.log4j.Logger;
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16 import org.json.JSONObject;
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17
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18 import de.mpiwg.indexmeta.web.servlet.methods.JSONGetCtxFromDB;
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19
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20 public class JSONInterface extends AbstractServlet implements Servlet{
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21 private static final long serialVersionUID = 1L;
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22
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23 private static Logger logger = Logger.getLogger(JSONInterface.class);
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24
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25 private HttpServletRequest request;
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26 private HttpServletResponse response;
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27
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28 private void initialize(HttpServletRequest request, HttpServletResponse response){
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29
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30 this.request = request;
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31 this.response = response;
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32 this.response.setContentType("application/json; charset=UTF-8");
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33
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34 try {
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35 System.out.println(request.getCharacterEncoding());
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36 request.setCharacterEncoding("UTF-8");
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37 } catch (UnsupportedEncodingException e) {
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38 e.printStackTrace();
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39 }
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40 }
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41
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42 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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43 this.doIt(request, response);
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44 }
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45
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46 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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47 this.doIt(request, response);
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48 }
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49
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50 public void doIt(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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51 long start = System.currentTimeMillis();
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52 this.initialize(request, response);
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53
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54 String method = request.getParameter(METHOD);
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55
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56 logger.info("Starting " + paramsToString(request.getParameterMap()));
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57
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58
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59 if(StringUtils.isNotEmpty(method)){
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60 try{
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61
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62 if(method.equals(getCtxFromDB)){
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63 JSONGetCtxFromDB.execute(null, request, response);
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64 }else if(method.equals("")){
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65
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66 }
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67
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68 }catch (Exception e) {
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69 logger.error(e.getMessage(), e);
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70 PrintWriter out = response.getWriter();
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71 out.print(e.getMessage());
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72 response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.getMessage());
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73 }
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74 }else{
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75 response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Parameter method can not be null.");
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76 }
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77
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78 long end = System.currentTimeMillis();
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79 logger.info("Finish [time=" + (end-start) + "] " + paramsToString(request.getParameterMap()));
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80 }
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81
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82 private String paramsToString(Map<String, String[]> paramMap){
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83 StringBuilder sb = new StringBuilder();
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84
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85 for(Entry<String, String[]> entry : paramMap.entrySet()){
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86 sb.append(entry.getKey() + "=[");
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87 int count = 0;
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88 for(String value : entry.getValue()){
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89 if(count > 0){
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90 sb.append(", ");
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91 }
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92 sb.append(value);
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93 count++;
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94 }
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95 sb.append("] ");
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96 }
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97
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98 return sb.toString();
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99 }
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100 }