getSocialRecommendation.java Source code

Introduction

Here is the source code for getSocialRecommendation.java

Source

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Iterator;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONArray;
import org.json.JSONObject;

/**
 *
 * @author Kehao Xu
 */
public class getSocialRecommendation extends HttpServlet {

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String name = request.getParameter("name").replace("%20", " ").replace("+", " ");
        String cid = request.getParameter("cid");

        String OS = System.getProperty("os.name").toLowerCase();
        String path = "";
        if (OS.indexOf("linux") >= 0)
            path = "/home/kex3";
        if (OS.indexOf("windows") >= 0)
            path = "C:\\study";

        File dir = null;
        if (name.contains("@"))
            dir = new File(path + File.separator + "socialCache" + File.separator + cid + File.separator + name);
        else {
            File conference = new File(path + File.separator + "socialCache" + File.separator + cid);

            String[] list = conference.list();
            for (int i = 0; i < list.length; i++) {
                if (list[i].contains(name))
                    dir = new File(conference.getAbsolutePath() + File.separator + list[i]);
                else
                    continue;
            }
        }
        //       System.out.println(dir.toString());

        //        if(dir==null)
        //            dir = new File(path+File.separator+"socialCache"+File.separator+cid+File.separator+"nosuchfile");
        String result = "";
        if (dir.exists()) {
            File rlJSON = new File(dir.getAbsolutePath() + File.separator + "RecommendationList.json");
            if (rlJSON.exists()) {
                BufferedReader r = new BufferedReader(new FileReader(rlJSON.getAbsolutePath()));
                String line = "";
                JSONArray ja = new JSONArray();
                JSONArray temp = new JSONArray();
                if ((line = r.readLine()) != null) {
                    //    result = line;
                    temp = new JSONArray(line);

                    for (int i = 0; i < temp.length(); i++) {
                        JSONObject tempJO = temp.getJSONObject(i);
                        JSONObject jo = new JSONObject();

                        @SuppressWarnings("unchecked")
                        Iterator<String> keys = tempJO.keys();
                        while (keys.hasNext()) {

                            String key = keys.next();
                            String value = "";
                            if (key.equals("Name")) {
                                value = tempJO.getString(key);
                                key = key.toLowerCase();
                                jo.put(key, value);
                                continue;
                            } else {
                                value = String.valueOf(tempJO.getDouble(key) * 100);
                                if (!value.endsWith("0")) {
                                    if (value.length() > 4) {
                                        value = value.substring(0, 4);
                                    } else {
                                        value = value.substring(0, value.length());
                                    }
                                }
                                //                                else
                                //                                    value = value+"%";
                                jo.put(key, Double.valueOf(value));
                            }

                        }
                        ja.put(jo);
                        //                        jo.put("name", tempJO.getString("Name"));
                        //                        jo.put("googlescholarcs", tempJO.getDouble("GoogleScholarCS"));
                    }
                    result = ja.toString();
                }
                r.close();

            }

        }
        response.setContentType("text/html; charset=UTF-8");
        response.getWriter().print(result);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}