bookdetail.jsp

Eclipse编程技术与实例一书的附CD-ROM光盘

      
      // Set lookup fields
          fldcategory_id = dLookUp( stat, "categories", "name", "category_id=" + toSQL(fldcategory_id, adNumber));
      if ( "".equals(sDetailErr)) {
      
fldimage_url="<img border=0 src=" + fldimage_url + ">";
fldproduct_url="Review this book on Amazon.com";
      }


      // Show form field
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">书名</font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldname)+"&nbsp;</font>");
      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">作者</font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldauthor)+"&nbsp;</font>");
      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">类别</font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldcategory_id)+"&nbsp;</font>");
      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">价格</font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldprice)+"&nbsp;</font>");
      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">图片</font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<a href=\""+(String) rsHash.get("product_url")+"\"><font style=\"font-size: 10pt; color: #000000\">"+fldimage_url+"</font></a>");

      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">备注</font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<font style=\"font-size: 10pt; color: #000000\">"+fldnotes+"&nbsp;</font>");
      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\"></font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<a href=\""+(String) rsHash.get("product_url")+"\"><font style=\"font-size: 10pt; color: #000000\">"+toHTML(fldproduct_url)+"</font></a>");

      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td colspan=\"2\" align=\"right\">");
      

      if ( bPK && ! (sAction.equals("insert") && "Detail".equals(sForm))) {
        
        out.print("<input type=\"hidden\" name=\"FormName\" value=\"详情\"><input type=\"hidden\" value=\"\" name=\"FormAction\">");
      }
      out.print("<input type=\"hidden\" name=\"item_id\" value=\""+toHTML(flditem_id)+"\">");
      out.print(transitParamsHidden+requiredParams+primaryKeyParams);
      out.println("</td>\n     </tr>\n     </form>\n    </table>");
      



    }
    catch (Exception e) { out.println(e.toString()); }
  } 


  String OrderAction(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sAction, String sForm, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException {
  
    String sOrderErr ="";
    try {

      if (sAction.equals("")) return "";

      String sSQL="";
      String transitParams = "";
      String primaryKeyParams = "";
      String sQueryString = "";
      String sPage = "";
      String sParams = "";
      String sActionFileName = "ShoppingCart.jsp";
      String sWhere = " ";
      boolean bErr = false;
      long iCount = 0;

  
      String pPKorder_id = "";

      final int iinsertAction = 1;
      final int iupdateAction = 2;
      final int ideleteAction = 3;
      int iAction = 0;

      if ( sAction.equalsIgnoreCase("insert") ) { iAction = iinsertAction; }
      if ( sAction.equalsIgnoreCase("update") ) { iAction = iupdateAction; }
      if ( sAction.equalsIgnoreCase("delete") ) { iAction = ideleteAction; }

      // Create WHERE statement


      String fldUserID="";
      String fldquantity="";
      String flditem_id="";
      String fldorder_id="";

      // Load all form fields into variables
    
      fldUserID = (String) session.getAttribute("UserID");
      fldquantity = getParam(request, "quantity");
      flditem_id = getParam(request, "item_id");
      // Validate fields
      if ( iAction == iinsertAction || iAction == iupdateAction ) {
        if ( isEmpty(fldquantity) ) {
          sOrderErr = sOrderErr + "The value in field Quantity is required.<br>";
        }
        if ( ! isNumber(fldquantity)) {
          sOrderErr = sOrderErr + "The value in field Quantity is incorrect.<br>";
        }
        if ( ! isNumber(flditem_id)) {
          sOrderErr = sOrderErr + "The value in field item_id is incorrect.<br>";
        }
        if (sOrderErr.length() > 0 ) {
          return (sOrderErr);
        }
      }


      sSQL = "";
      // Create SQL statement

      switch (iAction) {
  
        case iinsertAction :
          
            sSQL = "insert into orders (" + 
                "member_id," + 
                "quantity," +
                "item_id)" +

                " values (" + 
                toSQL(fldUserID, adNumber) + "," +
                toSQL(fldquantity, adNumber) + "," +
                toSQL(flditem_id, adNumber) + ")";
          break;
  
      }

      if ( sOrderErr.length() > 0 ) return sOrderErr;
      try {
        // Execute SQL statement
        stat.executeUpdate(sSQL);
      }
      catch(java.sql.SQLException e) {
        sOrderErr = e.toString(); return (sOrderErr);
      }
  
      try {
        if ( stat != null ) stat.close();
        if ( conn != null ) conn.close();
      }
      catch ( java.sql.SQLException ignore ) {}
      response.sendRedirect (sActionFileName);

      return "sendRedirect";
    }
    catch (Exception e) {out.println(e.toString()); }
    return (sOrderErr);
  }

  


  void Order_Show(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sOrderErr, String sForm, String sAction, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException {
    try {

      String sSQL="";
      String sQueryString = "";
      String sPage = "";
      String sWhere = "";
      String transitParams = "";
      String transitParamsHidden = "";
      String requiredParams = "";
      String primaryKeyParams ="";
      java.util.Hashtable rsHash = new java.util.Hashtable();
      
      String porder_id = "";

      String flditem_id="";
      String fldUserID="";
      String fldorder_id="";
      String fldquantity="";


      boolean bPK = true;

      if ( "".equals(sOrderErr)) {
        // Load primary key and form parameters
        flditem_id = getParam( request, "item_id");
        porder_id = getParam( request, "order_id");
      }
      else {
        // Load primary key, form parameters and form fields
        fldorder_id = getParam( request, "order_id");
        fldquantity = getParam( request, "quantity");
        flditem_id = getParam( request, "item_id");
        porder_id = getParam( request, "PK_order_id");
      }

      
      if ( isEmpty(porder_id)) { bPK = false; }
      
      sWhere += "order_id=" + toSQL(porder_id, adNumber);
      primaryKeyParams += "<input type=\"hidden\" name=\"PK_order_id\" value=\""+porder_id+"\"/>";

      sSQL = "select * from orders where " + sWhere;


      out.println("    <table style=\"\">");
      
      if ( ! sOrderErr.equals("")) {
        out.println("     <tr>\n      <td style=\"background-color: #FFFFFF; border-width: 1\" colspan=\"2\"><font style=\"font-size: 10pt; color: #000000\">"+sOrderErr+"</font></td>\n     </tr>");
      }
      sOrderErr="";
      out.println("     <form method=\"get\" action=\""+sFileName+"\" name=\"Order\">");

      java.sql.ResultSet rs = null;

      if ( bPK &&  ! (sAction.equals("insert") && "Order".equals(sForm))) {

        // Open recordset
        rs = openrs( stat, sSQL);
        rs.next();
        String[] aFields = getFieldsName( rs );
        getRecordToHash( rs, rsHash, aFields );
        rs.close();
        fldorder_id = (String) rsHash.get("order_id");
        flditem_id = (String) rsHash.get("item_id");
        if ( "".equals(sOrderErr)) {
          // Load data from recordset when form displayed first time
          fldquantity = (String) rsHash.get("quantity");
        }

        if (sAction.equals("") || ! "Order".equals(sForm)) {
      
          fldorder_id = (String) rsHash.get("order_id");
          fldquantity = (String) rsHash.get("quantity");
          flditem_id = (String) rsHash.get("item_id");
        }
        
      }
      else {
        if ( "".equals(sOrderErr)) {
          flditem_id = toHTML(getParam(request,"item_id"));
          fldquantity= "1";
        }
      }
      


      // Show form field
      
      out.print("     <tr>\n      <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">数量</font></td><td style=\"background-color: #FFFFFF; border-width: 1\">"); out.print("<input type=\"text\"  name=\"quantity\" maxlength=\"10\" value=\""+toHTML(fldquantity)+"\" size=\"10\">");

      out.println("</td>\n     </tr>");
      
      out.print("     <tr>\n      <td colspan=\"2\" align=\"right\">");
      

      if ( bPK && ! (sAction.equals("insert") && "Order".equals(sForm))) {
        
        out.print("<input type=\"hidden\" name=\"FormName\" value=\"订单\"><input type=\"hidden\" value=\"\" name=\"FormAction\">");
      }
      
      else {
        out.print("<input type=\"submit\" value=\"加入购物篮\" onclick=\"document.Order.FormAction.value = 'insert';\">");
        out.print("<input type=\"hidden\" name=\"FormName\" value=\"订单\"><input type=\"hidden\" value=\"insert\" name=\"FormAction\">");
      }out.print("<input type=\"hidden\" name=\"order_id\" value=\""+toHTML(fldorder_id)+"\">");out.print("<input type=\"hidden\" name=\"item_id\" value=\""+toHTML(flditem_id)+"\">");
      out.print(transitParamsHidden+requiredParams+primaryKeyParams);
      out.println("</td>\n     </tr>\n     </form>\n    </table>");