Java tutorial
/* * 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. */ package cl.wsconsulta.servlet; import java.io.IOException; import java.io.PrintWriter; 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 com.mongodb.BasicDBList; import com.mongodb.BasicDBObject; import com.mongodb.DB; import com.mongodb.DBCollection; import com.mongodb.DBCursor; import com.mongodb.MongoClient; import com.sun.org.apache.xalan.internal.xsltc.runtime.Constants; import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.InputStreamReader; import javax.servlet.RequestDispatcher; /** * * @author Javier */ @WebServlet(name = "ConsultaServlet", urlPatterns = { "/consultaServlet" }) public class ConsultaServlet extends HttpServlet { private static String dataBase; private static String coleccionIndice; private static String coleccionDocumentos; private static String indiceInvertido; /** * 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/html;charset=UTF-8"); String txtConsulta = request.getParameter("txtConsulta"); String txtUpper = txtConsulta.toUpperCase(); String query = consultar(txtUpper); String[] token = query.split(","); try (PrintWriter out = response.getWriter()) { /* TODO output your page here. You may use following sample code. */ out.println("<!DOCTYPE html>"); out.println("<html>"); out.println("<head>"); out.println("<title>Consulta</title>"); out.println("</head>"); out.println("<body>"); out.println("<div style='text-align: center; margin-top: 20px;'>"); out.println("<img src='resources/mwb.PNG'>"); out.println("<form action='./consultaServlet' >"); out.println("<p>"); out.println("<input id='Buscando' type='text' name='txtConsulta' value='" + txtConsulta + "' style='width: 700px;'/>"); out.println("<input id='BtnBuscar' type='submit' value='Buscar'/>"); out.println("</p>"); out.println("</div>"); out.println("</div>"); out.println("</form>"); out.println("</div>"); out.println("<div style='margin-left:70px; margin-top:40px;'>"); if (txtConsulta.isEmpty()) { out.println("<h3>No ingreso consulta</h3>"); } else { if (token.length == 0) { out.println("<h3>No hay referncias</h3>"); } else { for (String t : token) { out.println("<h3>" + t + "</h3>"); } } } out.println("</div>"); out.println("</body>"); out.println("</html>"); } } // <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> public static String consultar(String consulta) throws FileNotFoundException, IOException { DB database; database = null; dataBase = "labsd"; indiceInvertido = "prueba.xml"; coleccionDocumentos = "documentos"; coleccionIndice = "indiceInvertido"; MongoClient mongoClient = new MongoClient(); database = mongoClient.getDB(dataBase); DBCollection indiceInvertido = database.getCollection(coleccionIndice); DBCollection documento = database.getCollection(coleccionDocumentos); BasicDBList privileges = new BasicDBList(); BasicDBObject query = new BasicDBObject("palabra", consulta); DBCursor cursor = indiceInvertido.find(query); if (cursor.count() == 0) { System.out.println("Busqueda sin resultados: " + consulta); } else { while (cursor.hasNext()) { privileges = (BasicDBList) cursor.next().get("documento"); //DBObject obj = cursor.next(); //Object value = obj.get("documento"); //System.out.println(value); } } String lista = privileges.toString(); return lista; } }