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.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; /** * * @author bhaumik */ public class SalesRegister 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 mode = Integer.parseInt(request.getParameter("mode")); final int branch_cd = Integer.parseInt(request.getParameter("branch_cd")); final int pmt_mode = Integer.parseInt(request.getParameter("pmt_mode")); if (dataConnection != null) { try { PreparedStatement pstLocal = null; String sql = "select v.branch_cd,v.ins_amt,v.REF_NO,v.V_TYPE,v.inv_no,a.FNAME,v.V_DATE,v.DET_TOT,v.TAX_AMT,v.ADD_TAX_AMT,v.NET_AMT from " + " VILSHD v left join acntmst a on v.AC_CD=a.AC_CD where v_date >='" + from_date + "' " + "and v_date <='" + to_date + "' and is_del=0 "; if (pmt_mode != 2) { sql += " and pmt_mode=" + pmt_mode; } if (branch_cd != 0) { sql += " and branch_cd=" + branch_cd; } if (mode != 2) { sql += " and v_type=" + mode; } 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_type", viewDataRs.getString("V_TYPE")); object.addProperty("inv_no", viewDataRs.getString("inv_no")); object.addProperty("fname", viewDataRs.getString("FNAME")); object.addProperty("v_date", viewDataRs.getString("V_DATE")); object.addProperty("det_tot", viewDataRs.getString("DET_TOT")); object.addProperty("tax_amt", viewDataRs.getString("TAX_AMT")); object.addProperty("add_tax_amt", viewDataRs.getString("ADD_TAX_AMT")); object.addProperty("net_amt", viewDataRs.getString("NET_AMT")); object.addProperty("branch_cd", viewDataRs.getString("branch_cd")); object.addProperty("ins_amt", viewDataRs.getDouble("ins_amt")); array.add(object); } 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()); } } 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> }