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 account; import com.google.gson.JsonArray; import com.google.gson.JsonObject; import java.io.IOException; import java.io.PrintWriter; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.SQLNonTransientConnectionException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import support.DBHelper; import support.Library; /** * * @author Bhaumik */ public class GetCardDetail 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 { final String from_date = request.getParameter("from_date"); final String to_date = request.getParameter("to_date"); final DBHelper helper = DBHelper.GetDBHelper(); final Connection dataConnection = helper.getConnMpAdmin(); final JsonObject jResultObj = new JsonObject(); final int branch_cd = Integer.parseInt(request.getParameter("branch_cd")); final Library lb = Library.getInstance(); if (dataConnection != null) { try { PreparedStatement pstLocal = null; String sql = "select v.ref_no,v_date,inv_no,a.FNAME,v.NET_AMT,p.CARD_AMT,p.tid_no,p.card_no from vilshd v,payment p,acntmst a, phbkmst p1\n" + " where v.AC_CD=a.AC_CD and v.REF_NO=p.REF_NO and a.AC_CD = p1.AC_CD and v.IS_DEL=0 and v.v_date>='" + from_date + "' " + " and v.v_date <='" + to_date + "' and card_amt <>0"; if (branch_cd != 0) { sql += " and v.branch_cd=" + branch_cd; } pstLocal = dataConnection.prepareStatement(sql); ResultSet viewDataRs = pstLocal.executeQuery(); JsonArray array = new JsonArray(); while (viewDataRs.next()) { JsonObject object = new JsonObject(); object.addProperty("ref_no", viewDataRs.getString("ref_no")); object.addProperty("v_date", viewDataRs.getString("v_date")); object.addProperty("inv_no", viewDataRs.getString("inv_no")); object.addProperty("fname", viewDataRs.getString("fname")); object.addProperty("net_amt", viewDataRs.getString("net_amt")); object.addProperty("card_amt", viewDataRs.getString("card_amt")); object.addProperty("tid_no", viewDataRs.getString("tid_no")); object.addProperty("card_no", viewDataRs.getString("card_no")); array.add(object); } lb.closeResultSet(viewDataRs); lb.closeStatement(pstLocal); jResultObj.addProperty("result", 1); jResultObj.addProperty("Cause", "success"); jResultObj.add("data", array); } catch (SQLNonTransientConnectionException ex1) { jResultObj.addProperty("result", -1); jResultObj.addProperty("Cause", "Server is down"); } catch (SQLException ex) { jResultObj.addProperty("result", -1); jResultObj.addProperty("Cause", ex.getMessage()); } finally { lb.closeConnection(dataConnection); } } response.getWriter().print(jResultObj); } // <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> }