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 CreditNoteReport 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 String ac_cd = request.getParameter("ac_cd"); final DBHelper helper = DBHelper.GetDBHelper(); final Connection dataConnection = helper.getConnMpAdmin(); final JsonObject jResultObj = new JsonObject(); final String model_cd = (request.getParameter("model_cd")); final String memory_cd = (request.getParameter("memory_cd")); final String type_cd = (request.getParameter("type_cd")); final boolean sales = Boolean.parseBoolean((request.getParameter("sales"))); if (dataConnection != null) { try { PreparedStatement pstLocal = null; String sql = "select t.ac_name as fname,s.sr_name,t.pur_date as v_date,t1.TYPE_NAME,(t.tag_no) as pcs,(t.PUR_RATE) as tot_sales,t.ref_no as pur_tag_no" + ",sales.V_DATE as sales_date,disc_per,extra_support,backend,activation,prize_drop from tag t " + " " + " left join SERIESMST s on t.SR_CD=s.SR_CD left join MODELMST m on s.MODEL_CD=m.MODEL_CD left join TYPEMST t1 on m.TYPE_CD=t1.TYPE_CD " + " left join VILSHD sales on t.SALE_REF_NO=sales.REF_NO where t.PUR_DATE>='" + from_date + "' " + " and t.PUR_DATE<='" + to_date + "' "; if (sales) { } else { sql += " and (sales.V_DATE>'" + to_date + "' or t.SALE_REF_NO='')"; } if (!model_cd.equalsIgnoreCase("")) { sql += " and m.model_cd='" + model_cd + "'"; } if (!memory_cd.equalsIgnoreCase("")) { sql += " and s.MEMORY_CD='" + memory_cd + "'"; } if (!type_cd.equalsIgnoreCase("")) { sql += " and m.type_cd='" + type_cd + "'"; } if (!ac_cd.equalsIgnoreCase("")) { sql += " and sales.ac_cd='" + ac_cd + "'"; } sql += " and t.is_del <> -1 order by t.PUR_DATE"; pstLocal = dataConnection.prepareStatement(sql); ResultSet viewDataRs = pstLocal.executeQuery(); JsonArray array = new JsonArray(); while (viewDataRs.next()) { JsonObject object = new JsonObject(); object.addProperty("fname", viewDataRs.getString("fname")); object.addProperty("sr_name", viewDataRs.getString("sr_name")); object.addProperty("v_date", viewDataRs.getString("v_date")); object.addProperty("type_name", viewDataRs.getString("type_name")); object.addProperty("pcs", viewDataRs.getString("pcs")); object.addProperty("tot_sales", viewDataRs.getDouble("tot_sales")); object.addProperty("PUR_TAG_NO", viewDataRs.getString("PUR_TAG_NO")); object.addProperty("sales_date", viewDataRs.getString("sales_date")); object.addProperty("disc_per", viewDataRs.getString("disc_per")); object.addProperty("extra_support", viewDataRs.getString("extra_support")); object.addProperty("backend", viewDataRs.getString("backend")); object.addProperty("activation", viewDataRs.getString("activation")); object.addProperty("prize_drop", viewDataRs.getString("prize_drop")); 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> }