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📄 shoppingcart.jsp

📁 一个简单的网上书店例子
💻 JSP
📖 第 1 页 / 共 2 页
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<%@ page contentType="text/html;charset=gb2312"%>
<%@ include file="Common.jsp" %><%!
//   Filename: ShoppingCart.jsp

static final String sFileName = "ShoppingCart.jsp";
%><%

String cSec = checkSecurity(1, session, response, request);
if ("sendRedirect".equals(cSec) ) return;
                
boolean bDebug = false;

String sAction = getParam( request, "FormAction");
String sForm = getParam( request, "FormName");
String sItemsErr = "";
String sTotalErr = "";
String sMemberErr = "";

java.sql.Connection conn = null;
java.sql.Statement stat = null;
String sErr = loadDriver();
conn = cn();
stat = conn.createStatement();
if ( ! sErr.equals("") ) {
 try {
   out.println(sErr);
 }
 catch (Exception e) {}
}
if ( sForm.equals("Member") ) {
  sMemberErr = MemberAction(request, response, session, out, sAction, sForm, conn, stat);
  if ( "sendRedirect".equals(sMemberErr)) return;
}

%>            
<html>
<head>
<title>Book Store</title>
<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="expires" content="0"/>
<meta http-equiv="cache-control" content="no-cache"/>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
</head>
<body style="background-color: #FFFFFF; color: #000000; font-family: Arial, Tahoma, Verdana, Helveticabackground-color: #FFFFFF; color: #000000; font-family: Arial, Tahoma, Verdana, Helvetica">
<jsp:include page="Header.jsp" flush="true"/>
 <table>
  <tr>
   
   <td valign="top">
<% Member_Show(request, response, session, out, sMemberErr, sForm, sAction, conn, stat); %>
    
   </td>
  </tr>
 </table>
 <table>
  <tr>
   <td valign="top">
<% Items_Show(request, response, session, out, sItemsErr, sForm, sAction, conn, stat); %>
    
   </td>
  </tr>
 </table>
 <table>
  <tr>
   <td valign="top">
<% Total_Show(request, response, session, out, sTotalErr, sForm, sAction, conn, stat); %>
    
   </td>
  </tr>
 </table>

<jsp:include page="Footer.jsp" flush="true"/>
</body>
</html>
<%%>
<%
if ( stat != null ) stat.close();
if ( conn != null ) conn.close();
%>
<%!

  void Items_Show (javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sItemsErr, String sForm, String sAction, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException  {
  
    String sWhere = "";
    int iCounter=0;
    int iPage = 0;
    boolean bIsScroll = true;
    boolean hasParam = false;
    String sOrder = "";
    String sSQL="";
    String transitParams = "";
    String sQueryString = "";
    String sPage = "";
    int RecordsPerPage = 20;
    String sSortParams = "";
    String formParams = "";

      String pUserID="";

boolean bReq = true; 
    // Build WHERE statement
        
    //-- Check UserID parameter and create a valid sql for where clause
  
    pUserID = (String)session.getAttribute("UserID");
    if ( ! isNumber (pUserID)) {
      pUserID = "";
    }
    
    if (pUserID != null && ! pUserID.equals("")) {
            
        hasParam = true;
        sWhere += "member_id=" + pUserID;
    }
    
    else bReq = false;
    if (hasParam) { sWhere = " AND (" + sWhere + ")"; }

  // Build full SQL statement
  
  sSQL = "SELECT order_id, name, price, quantity, member_id, quantity*price as sub_total FROM items, orders WHERE orders.item_id=items.item_id" + sWhere + " ORDER BY order_id";
  

  String sNoRecords = "     <tr>\n      <td colspan=\"6\" style=\"background-color: #FFFFFF; border-width: 1\"><font style=\"font-size: 10pt; color: #000000\">No records</font></td>\n     </tr>";


  String tableHeader = "";
    tableHeader = "     <tr>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">详细</font></td>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">订单编号</font></td>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">书名</font></td>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">价格</font></td>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">数量</font></td>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">合计</font></td>\n     </tr>";
  
  
  try {
    out.println("    <table style=\"\">");
    out.println("     <tr>\n      <td style=\"background-color: #336699; text-align: Center; border-style: outset; border-width: 1\" colspan=\"6\"><a name=\"Items\"><font style=\"font-size: 12pt; color: #FFFFFF; font-weight: bold\">定购书籍信息</font></a></td>\n     </tr>");
    out.println(tableHeader);

    if ( ! bReq ) {
      out.println(sNoRecords);
      out.println("    </table>");
      return;
    }

  }
  catch (Exception e) {}

  
  try {
    java.sql.ResultSet rs = null;
    // Open recordset
    rs = openrs( stat, sSQL);
    iCounter = 0;
    
    java.util.Hashtable rsHash = new java.util.Hashtable();
    String[] aFields = getFieldsName( rs );

    // Show main table based on recordset
    while ( rs.next() ) {

      getRecordToHash( rs, rsHash, aFields );
      String flditem_id = (String) rsHash.get("name");
      String fldorder_id = (String) rsHash.get("order_id");
      String fldprice = (String) rsHash.get("price");
      String fldquantity = (String) rsHash.get("quantity");
      String fldsub_total = (String) rsHash.get("sub_total");
      String fldField1= "Details";

      out.println("     <tr>");
      
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<a href=\"ShoppingCartRecord.jsp?"+transitParams+"order_id="+toURL((String) rsHash.get("order_id"))+"&\"><font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldField1)+"</font></a>");

      out.println("</td>");
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldorder_id)+"&nbsp;</font>");
      out.println("</td>");
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(flditem_id)+"&nbsp;</font>");
      out.println("</td>");
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldprice)+"&nbsp;</font>");
      out.println("</td>");
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldquantity)+"&nbsp;</font>");
      out.println("</td>");
      out.print("      <td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldsub_total)+"&nbsp;</font>");
      out.println("</td>");
      out.println("     </tr>");
    
      iCounter++;
    }
    if (iCounter == 0) {
      // Recordset is empty
      out.println(sNoRecords);
    
      iCounter = RecordsPerPage+1;
      bIsScroll = false;
    }

    if ( rs != null ) rs.close();
    out.println("    </table>");
    
  }
  catch (Exception e) { out.println(e.toString()); }
}


  void Total_Show (javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sTotalErr, String sForm, String sAction, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException  {
  
    String sWhere = "";
    int iCounter=0;
    int iPage = 0;
    boolean bIsScroll = true;
    boolean hasParam = false;
    String sOrder = "";
    String sSQL="";
    String transitParams = "";
    String sQueryString = "";
    String sPage = "";
    int RecordsPerPage = 20;
    String sSortParams = "";
    String formParams = "";

      String pUserID="";

boolean bReq = true; 
    // Build WHERE statement
        
    //-- Check UserID parameter and create a valid sql for where clause
  
    pUserID = (String)session.getAttribute("UserID");
    if ( ! isNumber (pUserID)) {
      pUserID = "";
    }
    
    if (pUserID != null && ! pUserID.equals("")) {
            
        hasParam = true;
        sWhere += "member_id=" + pUserID;
    }
    
    else bReq = false;
    if (hasParam) { sWhere = " AND (" + sWhere + ")"; }

  // Build full SQL statement
  
  sSQL = "SELECT member_id, sum(quantity*price) as sub_total FROM items, orders WHERE orders.item_id=items.item_id" + sWhere + " GROUP BY member_id";
  

  String sNoRecords = "     <tr>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-width: 1\"><font style=\"font-size: 10pt; color: #000000\">No records</font></td>\n     </tr>";


  String tableHeader = "";
    tableHeader = "     <tr>\n      <td colspan=\"1\" style=\"background-color: #FFFFFF; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #CE7E00; font-weight: bold\">总价</font></td>\n     </tr>";
  
  
  try {
    out.println("    <table style=\"\">");
    
    out.println(tableHeader);

    if ( ! bReq ) {
      out.println(sNoRecords);

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