Wie die Werte einer Drop-Down-Multi Auswahlliste in einer JSP-Seite bekommen

Question

ich eine Drop-Down-Multiauswahlliste mit JavaScript-Funktion, die als

function addRow() { 

        $(function() { 
         $('#lstFruits').multiselect({ 
          includeSelectAllOption : true 
         }); 
        }); 

        var table = document.getElementById('my_table'); //html table 
        var rowCount = table.rows.length; //no. of rows in table 
        var columnCount = table.rows[0].cells.length; //no. of columns in table   
        var row = table.insertRow(rowCount); //insert a row    

        var cell1 = row.insertCell(0); //create a new cell   
        var element1 = document.createElement("input"); //create a new element   
        element1.type = "checkbox"; //set the element type 
        element1.setAttribute('id', 'newCheckbox'); //set the id attribute 
        element1.setAttribute('checked', true); //set checkbox by default checked 
        cell1.appendChild(element1); //append element to cell 

        var cell2 = row.insertCell(1); 
        var element2 = document.createElement("input"); 
        element2.type = "text"; 
        element2.setAttribute('id', 'newInput'); //set the id attribute 
        element2.setAttribute('name', 'sl' + rowCount); 
        element2.setAttribute('style', 'width: 50px'); 
        cell2.appendChild(element2); 

        var cell3 = row.insertCell(2); 
        var element3 = document.createElement("input"); 
        element3.type = "textarea"; 
        element3.setAttribute('rows', '4'); 
        element3.setAttribute('cols', '40'); 
        element3.setAttribute('id', 'newInput'); //set the id attribute 
        element3.setAttribute('name', 'discription' + rowCount); 
        cell3.appendChild(element3); 

        var cell4 = row.insertCell(3); 
        var element4 = document.createElement("input"); 
        element4.type = "text"; 
        element4.setAttribute('id', 'newInput'); //set the id attribute 
        element4.setAttribute('name', 'quantity' + rowCount); 
        cell4.appendChild(element4); 

        var cell5 = row.insertCell(4); 
        var element5 = document.createElement("input"); 
        element5.type = "text"; 
        element5.setAttribute('id', 'newInput'); //set the id attribute 
        element5.setAttribute('name', 'price' + rowCount); 
        cell5.appendChild(element5); 

        var cell6 = row.insertCell(5); 
        var element6 = document.createElement("input"); 
        element6.type = "text"; 
        element6.setAttribute('id', 'newInput'); //set the id attribute 
        element6.setAttribute('name', 'CST' + rowCount); 
        element6.setAttribute('style', 'width: 50px'); 
        cell6.appendChild(element6); 

        var cell7 = row.insertCell(6); 
        var element7 = document.createElement("select"); 
        element7.type = "select"; 
        element7.setAttribute('multiple', 'multiple'); 

        // element7.setAttribute('style', 'width: 50px'); 

        element7.setAttribute('size', 3); 
        element6.setAttribute('id', 'newSelect'); //set the id attribute 
        element6.setAttribute('name', 'taxGroup' + rowCount); 

        var option1 = document.createElement("option"); 
        var option2 = document.createElement("option"); 
        var option3 = document.createElement("option"); 
        var option4 = document.createElement("option"); 
        var option5 = document.createElement("option"); 
        var option6 = document.createElement("option"); 
        var option7 = document.createElement("option"); 
        var option8 = document.createElement("option"); 
        option1.text = "Select Tax"; 
        option2.text = "VAT5"; 
        option3.text = "VAt14.5"; 
        option4.text = "SALES TAX"; 
        option5.text = "SERVICE TAX"; 
        option6.text = "KISHI Kalyan"; 
        option7.text = "Swachh BHARAT"; 
        option8.text = "GST"; 

        element7.add(option1); 
        element7.add(option2); 
        element7.add(option3); 
        element7.add(option4); 
        element7.add(option5); 
        element7.add(option6); 
        element7.add(option7); 
        element7.add(option8); 
cell7.appendChild(element7); 
} 

folgt erstellt Jetzt ist meine Frage:

Wie Holen Sie die ausgewählten Werte auf eine andere JSP-Seite.

Ich habe den Code versucht, aber der Code funktioniert nicht gut.

So poste ich den Code, so dass, wenn irgendwelche Änderungen erforderlich sind, Sie mir sagen können.

Der Code ist wie folgt

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" 
    pageEncoding="ISO-8859-1"%> 
<%@ page import="java.io.*"%> 
<%@ page import="java.sql.*"%> 
<%@ page import="com.model.*"%> 
<%@ page import="java.util.*"%> 
<%@ page import="java.text.DecimalFormat"%> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 
<title>Insert title here</title> 
</head> 
<body> 
    <% 
     String organizationName, phoneNo, buyDate, invoiceNo, buyerOrderNo, esugamNo, deliveryAddress, PANNo, deliveryNote, invoiceDate, termsofPayment, dispatchDocumentNo, attention, dated, dispatchThrough, destination, termsOfDelivery, discount, buyerTin, buyerCSTNo; 
      int CId =0; 
      organizationName = request.getParameter("bname"); 
      phoneNo = request.getParameter("bno"); 
      buyDate = request.getParameter("buyerorderDate"); 
      invoiceNo = request.getParameter("invNo"); 
      buyerOrderNo = request.getParameter("buyerOrderNo"); 
      esugamNo = request.getParameter("esugamNo"); 
      PANNo = request.getParameter("bpan"); 
      deliveryNote = request.getParameter("delivNote"); 
      invoiceDate = request.getParameter("invoiceDate"); 
      attention = request.getParameter("bAttn"); 
      dated = request.getParameter("dispatchDate"); 
      dispatchThrough = request.getParameter("dispThrough"); 
      destination = request.getParameter("destination"); 
      termsOfDelivery = request.getParameter("termDelivery"); 
      discount = request.getParameter("discount"); 
      buyerTin = request.getParameter("bTinNo"); 
      buyerCSTNo = request.getParameter("bcstNo"); 
      deliveryAddress = request.getParameter("bDelivAdd"); 
      termsofPayment = request.getParameter("termsOfPmnt"); 
      dispatchDocumentNo = request.getParameter("dispDocNo"); 

      try{ 
     DBConnect db =new DBConnect(); 
     Connection con = db.getCon(); 
     String sql ="insert into marketing_database.invoiceclient_details (OrganizationName,PhoneNo,BuyDate,InvoiceNo,BuyerOrderNo,EsugamNo,DeliveryAddress,PANNO,DeliveryNote,InvoiceDate,TermsOfPayment,DispatchDocumentNo,DispatchThrough,Destination,TermsofDelivery,Attention,Discount,BuyerTin,BuyerCSTNo,Dated) values (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);"; 
     PreparedStatement ps =con.prepareStatement(sql); 
     ps.setString(1, organizationName); 
     ps.setString(2, phoneNo); 
     ps.setString(3, buyDate); 
     ps.setString(4, invoiceNo); 
     ps.setString(5, buyerOrderNo); 
     ps.setString(6, esugamNo); 
     ps.setString(7, deliveryAddress); 
     ps.setString(8, PANNo); 
     ps.setString(9, deliveryNote); 
     ps.setString(10, invoiceDate); 
     ps.setString(11, termsofPayment); 
     ps.setString(12, dispatchDocumentNo); 
     ps.setString(13, dispatchThrough); 
     ps.setString(14,destination); 
     ps.setString(15, termsOfDelivery); 
     ps.setString(16, attention); 
     ps.setString(17, discount); 
     ps.setString(18, buyerTin); 
     ps.setString(19, buyerCSTNo); 
     ps.setString(20, dated); 

     ps.executeUpdate(); 

     //Get Max CID 
     String sql1 ="Select MAX(CId) from marketing_database.invoiceclient_details"; 
     PreparedStatement ps1 = con.prepareStatement(sql1); 
     ResultSet rs =ps1.executeQuery(sql1); 
     while(rs.next()) 
     { 
      CId =rs.getInt(1); 
      System.out.println("CId====="+CId); 
     } 
     con.close(); 
     ps.close(); 
     ps1.close(); 
     rs.close(); 
     System.out.println("Saved to Invoice Details"); 
      } 
      catch(SQLException ex){ 
     ex.printStackTrace(); 
      } 

      // 
      String createdBy=(String)session.getAttribute("email"); 

      String row = request.getParameter("rowCount"); 
      System.out.println("Row Count====="+row); 
      int rowCount = Integer.parseInt(row); 


      String item,description; 
      String CST; 
      int quantity; 
      double perUnitPrice; 

       String serviceTax =null, vat5 = null, vat14 = null; 

       try{ 
      DBConnect db =new DBConnect(); 
      Connection con = db.getCon(); 
       String sql = " select vat5,vat14,serviceTax FROM marketing_database.tax_info WHERE id='1' ;"; 
       PreparedStatement ps = con.prepareStatement(sql); 
       ResultSet rs = ps.executeQuery(); 
      while (rs.next()) { 
       vat5 = rs.getString("vat5"); 
       vat14 = rs.getString("vat14"); 
       serviceTax = rs.getString("serviceTax"); 
       // CST = rs.getString("CST"); 
      } 
      con.close(); 
      ps.close(); 
      rs.close(); 
       } 
       catch(SQLException ex){ 
      ex.printStackTrace(); 
       } 
     int j=1; 


     List<Double> cstAmountList= new ArrayList<Double>(); 
     List<Double> vat5AmountList= new ArrayList<Double>(); 
     List<Double> vat14AmountList= new ArrayList<Double>(); 
     List<Double> svcTaxAmountList= new ArrayList<Double>(); 

     while (j < rowCount) { 

     float serviceTaxDB = 0, vat5DB = 0, vat14DB = 0; 

     description = request.getParameter("discription" + j); 


     if(request.getParameter("quantity" + j)==null ||request.getParameter("quantity" + j).equals("")) 
      { 
       quantity=0; 
      } 
      else{ 
       quantity = Integer.parseInt(request.getParameter("quantity" + j)); 
      } 

      if(request.getParameter("price"+ j)==null ||request.getParameter("price"+ j).equals("")) 
      { 
       perUnitPrice=0; 
      } 
      else{ 
       perUnitPrice = Double.parseDouble(request.getParameter("price"+ j)); 
      } 



//  quantity = Integer.parseInt(request 
//    .getParameter("quantity" + j)); 

//  perUnitPrice = Double.parseDouble(request.getParameter("price"+ j)); 

     double totalPrice = (quantity*perUnitPrice); 

     CST =request.getParameter("CST"+ j); 
     float cst; 
     if(CST==null ||CST=="") 
     { 
      cst=0; 
     } 
     else{ 
      cst=Float.parseFloat(CST); 
     } 

       double cstAmnt=0,vat5Amnt=0,vat14Amnt=0,serviceTaxAmnt=0; 


       cstAmnt = (totalPrice*cst)/100; 
       //rounding to two decimal places 
       DecimalFormat cstroundoff = new DecimalFormat("0.00"); 
       String cstround = cstroundoff.format(cstAmnt); 
       double cstroundofff = Double.parseDouble(cstround); 
       cstAmountList.add(cstroundofff); 


      // Get Selected TAX from MultiSelct DropDown List 

        int length =0; 
        String[] tax = request.getParameterValues("taxGroup" + j); 
        length =tax.length; 
       for(int i=0;i<length-1;i++){ 
        String taxName=tax[i]; 
        System.out.println("Tax Name is = "+taxName); 
       } 
        if(tax==null ||tax.equals("")) 
        { 
         length=0; 
        } 
        else{ 
         length = tax.length; 

        } 

//    String[] tax; 

//    tax = request.getParameterValues("tax" + j); 
//    int length = tax.length; 
       // System.out.println("length===="+length); 
        if (tax != null) { 
         for (int k = 0; k < tax.length; k++) { 
          if (tax[k].contains("vat5")) { 

          vat5DB = Float.parseFloat(vat5); 
           vat5Amnt = (totalPrice*vat5DB)/100; 
           // rounding to two decimal places 

           DecimalFormat vat5roundoff = new DecimalFormat("0.00"); 
           String vat5round = vat5roundoff.format(vat5Amnt); 
           double vat5roundofff = Double.parseDouble(vat5round); 
           vat5AmountList.add(vat5roundofff); 
          } 
          if (tax[k].contains("vat14")) { 

          vat14DB =Float.parseFloat(vat14) ; 
          vat14Amnt = (totalPrice*vat14DB)/100; 
          //rounding to two decimal places 
          DecimalFormat vat14roundoff = new DecimalFormat("0.00"); 
          String vat14round = vat14roundoff.format(vat14Amnt); 
          double vat14roundofff = Double.parseDouble(vat14round); 
          vat14AmountList.add(vat14roundofff); 
          } 
          if (tax[k].contains("serviceTax")) { 

          serviceTaxDB = Float.parseFloat(serviceTax); 
           serviceTaxAmnt = (totalPrice*serviceTaxDB)/100; 
           //rounding to two decimal places 
           DecimalFormat svcroundoff = new DecimalFormat("0.00"); 
           String svcround = svcroundoff.format(serviceTaxAmnt); 
           double svcroundofff = Double.parseDouble(svcround); 
           svcTaxAmountList.add(svcroundofff); 
          } 

//      if (tax[k].contains("cst")) { 

//       CSTDB =Float.parseFloat(CST); 

//      } 
         } 
        } 
        try{ 
         DBConnect db =new DBConnect(); 
         Connection con = db.getCon(); 
         String sql ="INSERT INTO marketing_database.invoice (CId,CreatedBy,DescriptionOfGoods,Quantity,PerUnitPrice,VAT5,VAT14,ServiceTax,CST,TotalPrice) values (?,?,?,?,?,?,?,?,?,?);"; 
         PreparedStatement ps = con.prepareStatement(sql); 
         ps.setInt(1, CId); 
         ps.setString(2, createdBy); 
         ps.setString(3, description); 
         ps.setInt(4, quantity); 
         ps.setDouble(5, perUnitPrice); 
         ps.setDouble(6, vat5Amnt); 
         ps.setDouble(7, vat14Amnt); 
         ps.setDouble(8, serviceTaxAmnt); 
         ps.setDouble(9, cstAmnt); 
         ps.setDouble(10, totalPrice); 
         ps.executeUpdate(); 
         System.out.println(" Saved to invoicing !!"); 
        con.close(); 
        ps.close(); 
      } catch (SQLException ex) { 
       ex.printStackTrace(); 
      } 

      j = j + 1; 

     } 
      double subTotal =0.0; 
      double cstTotal =0.0; 
      double vat5Total= 0.0; 
      double vat14Total = 0.0; 
      double svcTaxTotal =0.0; 
     try{ 
      DBConnect db =new DBConnect(); 
       Connection con = db.getCon(); 
        String sql = "select SUM(TotalPrice) FROM marketing_database.invoice WHERE CId='"+CId+"' ;"; 
        PreparedStatement ps = con.prepareStatement(sql); 
        ResultSet rs = ps.executeQuery(); 
        while(rs.next()){ 
         subTotal=rs.getDouble(1); 

        } 
        int cstSize = cstAmountList.size(); 
        System.out.println("CST size==="+cstSize); 
        for(int i=0;i<cstSize;i++) 
        { 
         cstTotal+=cstAmountList.get(i); 
        } 
        int vat5Size =vat5AmountList.size(); 
        System.out.println("vat5 size==="+vat5Size); 
        for(int i=0;i<vat5Size;i++) 
        { 
         vat5Total+=vat5AmountList.get(i); 
        } 
        int vat14size = vat14AmountList.size(); 
        System.out.println("vat14 size==="+vat14size); 
        for(int i=0;i<vat14size;i++) 
        { 
         vat14Total+=vat14AmountList.get(i); 
        } 
        int svcSize = svcTaxAmountList.size(); 
        for(int i=0;i<svcSize;i++) 
        { 
         svcTaxTotal+=svcTaxAmountList.get(i); 
        } 

        Double grandTotal =subTotal+cstTotal+vat5Total+vat14Total+svcTaxTotal; 
        int roundofff = (int) Math.round(grandTotal); 
        String sql1 = "UPDATE `marketing_database`.`invoiceclient_details` SET `SubTotal`=? ,`grandTotal`=? , `cstAmount`=? ,`vat5Amount`=? ,`vat14Amount`=?,`svcTaxAmount`=? WHERE `CId`='"+CId+"';" ; 
        PreparedStatement psmt = con.prepareStatement(sql1); 
        psmt.setDouble(1, subTotal); 
        psmt.setDouble(2, roundofff); 
        psmt.setDouble(3, cstTotal); 
        psmt.setDouble(4, vat5Total); 
        psmt.setDouble(5, vat14Total); 
        psmt.setDouble(6, svcTaxTotal); 
        psmt.executeUpdate(); 
        con.close(); 
        psmt.close(); 
        System.out.println("Sub total updated in Invoice details"); 
     } 
     catch(SQLException ex) 
     { 
     ex.printStackTrace(); 
     } 
     response.sendRedirect("Ihome.jsp"); 
    %> 
</body> 
</html> 

Jede Hilfe in dieser wird

Answer 1

für Multi wählen Drop-Down-Einsatz geschätzt werden:

<select name="ur_name[]"></select> 

name="ur_name[]" wird es eine Anordnung. Wenn das enthaltende Formular gesendet wird, erhalten Sie das ausgewählte Array wie

ur_name [0] = erstes Element, ur_name [1] = zweites Element und so weiter.