barcode generator visual basic 6 source code Request Dispatching in Java

Creation QR Code in Java Request Dispatching

Request Dispatching
Quick Response Code Generation In Java
Using Barcode encoder for Java Control to generate, create QR-Code image in Java applications.
Read QR-Code In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
<%-- Radio buttons for selecting the page --%> <TR> <TD ALIGN=LEFT> <% String which = requestgetParameter("which"); if (which == null) which = TABS[0][0]; String jspToRun = null; for (int i = 0; i < TABSlength; i++) { String tabCode = TABS[i][0]; String tabLabel = TABS[i][1]; String tabJSP = TABS[i][2]; String CHECKED = ""; if (whichequals(tabCode)) { CHECKED = "CHECKED"; jspToRun = tabJSP; } %> <INPUT NAME="which" TYPE="RADIO" VALUE="<%= tabCode %>" <%= CHECKED %> onClick="thisformsubmit()" ><%= tabLabel %> <% } %> <P> </TD> </TR> <TR> <TD ALIGN=CENTER VALIGN=TOP> <%-- Page showing details of the request --%> <jsp:include page="<%= jspToRun %>" flush="true" /> <%-- Resulting table --%> <TABLE BORDER=1 CELLPADDING=3 CELLSPACING=0 WIDTH=600>
Encoding Bar Code In Java
Using Barcode generator for Java Control to generate, create barcode image in Java applications.
Scanning Bar Code In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
ELEMENTS OF JSP
QR Code Generation In Visual C#.NET
Using Barcode creation for VS .NET Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications.
Print QR-Code In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create QR Code ISO/IEC18004 image in ASP.NET applications.
JSP: The Complete Reference
QR Maker In Visual Studio .NET
Using Barcode creator for .NET Control to generate, create QR Code JIS X 0510 image in .NET framework applications.
QR Code ISO/IEC18004 Generator In Visual Basic .NET
Using Barcode maker for .NET framework Control to generate, create QR Code image in Visual Studio .NET applications.
<TR> <TH COLSPAN=2 ALIGN=LEFT BGCOLOR="#000000"> <FONT SIZE="+1" COLOR="#FFFFFF"> <%= requestgetAttribute("_table_title") %> </FONT> </TH> </TR> <TR> <TH WIDTH=200 ALIGN=LEFT>Name</TH> <TH WIDTH=400 ALIGN=LEFT>Value</TH> </TR> <% Map entries = (Map) requestgetAttribute("_table_entries"); Iterator iNames = entrieskeySet()iterator(); int row = 0; while (iNameshasNext()) { String name = (String) iNamesnext(); Object value = entriesget(name); %> <TR BGCOLOR="<%= COLORS[row % 2] %>"> <TD ALIGN=LEFT VALIGN=TOP><B><%= name %></B></TD> <TD ALIGN=LEFT VALIGN=TOP><%= value %></TD> </TR> <% row++; } %> </TABLE> <P> </TD> </TR> </TABLE> </FORM> </BODY> </HTML>
Data Matrix Drawer In Java
Using Barcode maker for Java Control to generate, create ECC200 image in Java applications.
UPCA Drawer In Java
Using Barcode creator for Java Control to generate, create GS1 - 12 image in Java applications.
The categories available for display are coded in a static String array For each category, a two-character abbreviation exists: a label and the name of a JSP page that will extract the desired data There are four categories of attributes: I Request Headers I Parameters
Barcode Maker In Java
Using Barcode printer for Java Control to generate, create barcode image in Java applications.
Universal Product Code Version A Maker In Java
Using Barcode drawer for Java Control to generate, create UPC-A image in Java applications.
9:
Encoding UPC E In Java
Using Barcode maker for Java Control to generate, create UPC - E1 image in Java applications.
Encoding EAN / UCC - 13 In C#.NET
Using Barcode encoder for VS .NET Control to generate, create GS1 - 13 image in Visual Studio .NET applications.
Request Dispatching
Encoding ECC200 In None
Using Barcode encoder for Software Control to generate, create ECC200 image in Software applications.
Read Code 3 Of 9 In VB.NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
I Methods in ServletRequest I Methods in HttpServletRequest The string array provides all the information needed to generate the page The radio buttons are contained in a self-referring HTML form and are generated in a loop, with the two-character abbreviation used as the VALUE attribute and the label as the visible text When a radio button is clicked, the form is submitted, with the value of the button supplying the value of the which parameter Figure 9-3 shows the initial display, which is the request headers category When another radio button is clicked (for example, the ServletRequest Method button), a different table appears in the body of the table (see Figure 9-4)
Code 128 Code Set A Creation In None
Using Barcode printer for Microsoft Excel Control to generate, create Code 128 Code Set C image in Microsoft Excel applications.
Barcode Creator In None
Using Barcode maker for Font Control to generate, create bar code image in Font applications.
ELEMENTS OF JSP
EAN / UCC - 13 Creator In VB.NET
Using Barcode generation for .NET framework Control to generate, create EAN-13 Supplement 5 image in .NET applications.
Scan GS1 - 12 In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
Figure 9-3
HTTP request headers displayed by ShowRequestjsp
JSP: The Complete Reference
Figure 9-4
Servlet request methods shown in the third tab of ShowRequestjsp
The ShowRequestjsp determines which radio button was clicked and selects the corresponding JSP filename from the string array This filename is then passed in a JSP expression to the <jsp:include> action:
<jsp:include page="<%= jspToRun %>" flush="true" />
Each of the individual table generating pages creates a list of attribute names and values, and writes them to a javautilMap object that is stored as a request attribute The table heading string is also stored as a request attribute When the included JSP
9:
Request Dispatching
completes, the map is retrieved from the request attribute and rendered in an HTML table The JSP that generates the Request Headers tab is shown in the following:
<%@ page import="javautil*" %> <% Enumeration eNames = requestgetHeaderNames(); if (eNameshasMoreElements()) { String title = "Request Headers"; Map entries = new TreeMap(); while (eNameshasMoreElements()) { String name = (String) eNamesnextElement(); String value = requestgetHeader(name); entriesput(name, value); } requestsetAttribute("_table_title", title); requestsetAttribute("_table_entries", entries); } %>
ELEMENTS OF JSP
This capability to select a page to be included based on run-time information is a useful characteristic of JSP-based Web applications because it allows complex processing to be built on table-driven logic
Passing Parameters to the Included JSP
Parameters can be passed to JSP pages that are invoked through <jsp:include> actions to provide additional customization The syntax in this case would be <jsp:include page="pageName" flush="true"> <jsp:param name="parm1Name" value="parm1Value" /> <jsp:param name="parm2Name" value="parm2Value" /> </jsp:include> The parameters are passed to the included JSP the same as ordinary form parameters, and can be retrieved with requestgetParameter(name) If the parameter name is the same as one the JSP is already using, both values are passed and can be retrieved as an array of strings using getParameterValues(name) The following JSP illustrates how this technique can be used It includes the same page twice, using different parameters each time
<% // Diameter of the earth in kilometers int distance = 12756;
Copyright © OnBarcode.com . All rights reserved.