Javafile.java Source code

Introduction

Here is the source code for Javafile.java

Source

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.*;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Scanner;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;

/**
 *
 * @author nihal-pt1432
 */
@WebServlet(urlPatterns = { "/Javafile" })
public class Javafile extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/json;charset=UTF-8");

        //System.out.print("I am here");
        try {
            HashMap<String, Integer> words = new HashMap<String, Integer>();
            HashMap<String, String> matchedWords = new HashMap<String, String>();
            readWords(words);
            long totalFind = 0;

            JSONObject wordObj = new JSONObject();
            JSONArray matchedArrayJSON = new JSONArray();
            String s = request.getParameter("inputStr");
            int page = Integer.parseInt(request.getParameter("page"));
            int count;
            count = page * 10;

            totalFind = findMatchedWords(s, words, matchedWords, matchedArrayJSON, count);
            wordObj.put("matchedArrayJSON", matchedArrayJSON);
            wordObj.put("totalFind", totalFind);

            call_Webpage(request, response, wordObj);
        } finally {
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</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 doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * 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 {
        processRequest(request, response);
    }

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

    void readWords(HashMap<String, Integer> words) {
        try {
            Scanner me = new Scanner(new File("E:/Sample Projects/ValidateWords/words.txt"));
            String word;
            while (me.hasNext()) {
                word = me.next();
                words.put(word, word.length());
            }
        } catch (Exception e) {

        }
    }

    void call_Webpage(HttpServletRequest request, HttpServletResponse response, JSONObject wordObj) {
        try {
            response.setContentType("application/json");
            response.setCharacterEncoding("UTF-8");
            response.getWriter().write(String.valueOf(wordObj));
        } catch (Exception e) {

        }
    }

    boolean findWord(String s, HashMap words) {
        return words.get(s) != null;
    }

    long findMatchedWords(String s, HashMap words, HashMap matchedWords, JSONArray matchedArrayJSON, int count) {
        String s1;
        int i = 0;
        long totalFind = 0;
        for (Iterator it = words.keySet().iterator(); it.hasNext();) {

            Object key = it.next();
            s1 = key.toString();
            if (s1.contains(s)) {
                totalFind++;
                i++;
                if (i >= count - 10 && i < count) {
                    JSONObject matchedWordJSON = new JSONObject();
                    matchedWordJSON.put("id", s1);
                    matchedWordJSON.put("text", s1);
                    matchedArrayJSON.add(matchedWordJSON);
                }
            }
        }
        return totalFind;
    }
}