vb.net code to generate barcode Invoking URLs from Domains That Do and Don t Include crossdomain.xml in Java

Making PDF417 in Java Invoking URLs from Domains That Do and Don t Include crossdomain.xml

Invoking URLs from Domains That Do and Don t Include crossdomain.xml
PDF417 Generation In Java
Using Barcode encoder for Java Control to generate, create PDF417 image in Java applications.
www.OnBarcode.com
PDF-417 2d Barcode Decoder In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
If a crossdomain.xml file exists (and defines the required security credentials) at the root of the domain from where the resource is being accessed using a URL, there are no security violations and things work just fine. If crossdomain.xml is missing, the URL request would terminate with a security exception. In general, it s a good idea to understand the crossdomain.xml file, the Flash Player security model, and its significance. It s highly recommended that you read the article Understanding the security changes in Flash Player 10 by Trevor McCauley, accessible at http://www.adobe.com/devnet/flashplayer/ articles/fplayer10_security_changes.html.
Code 39 Full ASCII Maker In Java
Using Barcode creation for Java Control to generate, create Code-39 image in Java applications.
www.OnBarcode.com
Code 128 Code Set A Printer In Java
Using Barcode creator for Java Control to generate, create ANSI/AIM Code 128 image in Java applications.
www.OnBarcode.com
Manipulating HTTP Headers with Requests
Data Matrix ECC200 Creator In Java
Using Barcode maker for Java Control to generate, create Data Matrix ECC200 image in Java applications.
www.OnBarcode.com
Creating Denso QR Bar Code In Java
Using Barcode encoder for Java Control to generate, create QR-Code image in Java applications.
www.OnBarcode.com
In short, HTTPService allows custom header settings for HTTP POST method calls, but does not allow them for GET method calls. In Representational State Transfer (REST)-style web services, this can be a problem because things from basic HTTP authentication to content type delivery depend on it. I ll pick the topic up again in the next section when we discuss URLLoader and compare it with HTTPService. That concludes this discussion of HTTPService. Although HTTPService can utilize server-side proxy with data services, we didn t cover any of that because we haven t started with data services yet. (Data services are covered in 8) One example of where data services impact HTTPService: HTTP methods other than GET and POST can be used, and access tosites that don t define crossdomain.xml becomes possible under proxied situations. Let s move on to flash.net.URLLoader and its associated classes.
Barcode Maker In Java
Using Barcode creation for Java Control to generate, create Barcode image in Java applications.
www.OnBarcode.com
Print EAN8 In Java
Using Barcode generator for Java Control to generate, create EAN-8 image in Java applications.
www.OnBarcode.com
URLLoader, URLRequest, and URLVariables
Print PDF 417 In Java
Using Barcode drawer for Android Control to generate, create PDF-417 2d barcode image in Android applications.
www.OnBarcode.com
Making PDF417 In .NET
Using Barcode printer for Reporting Service Control to generate, create PDF-417 2d barcode image in Reporting Service applications.
www.OnBarcode.com
HTTPService is the primary class in the Flex framework that enables the making of HTTP requests. HTTPService supports all types of text and XML formats to get and parse text-based data. It supports the popular HTTP GET and POST methods, and it allows parameter passing and provides for event-based handling of call success and failure. Now let s start exploring alternatives to HTTPService. To begin with, Flex is a framework for creating applications that run in the Flash Player. Such applications are written using ActionScript and MXML, then translated to bytecode and instructions that the Flash VM understands. Before Flex, ActionScript alone could be used successfully to create applications that ran in the Flash Player. It s possible to do that even today. We are not suggesting you avoid the Flex framework, only pointing out that there is more to application-building in the Flash Player than Flex. Also, you can use all the extra good things in your Flex applications. For example, the classes in the Flash libraries that support HTTP communication provide features available in the Flex framework. URLLoader and its associated classes, URLRequest, URLStream, URLVariables, and URLRequestMethod, can be used instead of the Flex HTTPService class to incorporate HTTP-based requests in an application. URLLoader is positioned as the class that loads networked resources, while HTTPService is the class that fetches remote data, but they do many things in common and can be interchanged in many situations. Sometimes using URLLoader is a more robust option than using HTTPService. One such case is its ability to access binary data. URLLoader is quite capable of accessing any kind of binary data, say an image file. In contrast, HTTPService invocations to access binary data end in an error condition. To gently get started with URLLoader and its applicability, let s re-implement the HTTPService example using URLLoader. Here is the new code, done up as an MXML application:
Print Barcode In Java
Using Barcode maker for BIRT reports Control to generate, create Barcode image in Eclipse BIRT applications.
www.OnBarcode.com
UCC-128 Creator In None
Using Barcode generation for Microsoft Excel Control to generate, create EAN 128 image in Office Excel applications.
www.OnBarcode.com
/* topscorers_urlloader.mxml */ < xml version="1.0" encoding="utf-8" > <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo" minWidth="1024" minHeight="768"> <fx:Script> <![CDATA[ import XMLDataURLLoader; private function loadXML():void { var xmlDataURLLoader:XMLDataURLLoader = new XMLDataURLLoader(); xmlDataURLLoader.loadXMLData(); myVBox.addChild(xmlDataURLLoader.myDataGrid); } ]]> </fx:Script> <s:SkinnableContainer> <s:layout> <s:VerticalLayout horizontalAlign="center" paddingLeft="40" paddingTop="40" /> </s:layout>
Barcode Recognizer In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
www.OnBarcode.com
1D Generation In Visual Basic .NET
Using Barcode generation for .NET framework Control to generate, create 1D Barcode image in VS .NET applications.
www.OnBarcode.com
INTEGRATING FLEX WITH JAVA USING SERVICES
Draw QR-Code In None
Using Barcode printer for Microsoft Excel Control to generate, create Denso QR Bar Code image in Excel applications.
www.OnBarcode.com
Barcode Drawer In Java
Using Barcode generation for Eclipse BIRT Control to generate, create Barcode image in Eclipse BIRT applications.
www.OnBarcode.com
<mx:VBox id="myVBox" width="100%" height="100%" /> <mx:Button label="Invoke URLLoader" click="loadXML()"/> </s:SkinnableContainer> </s:Application> /* XMLDataURLLoader.as */ package { import flash.events.Event; import flash.net.URLLoader; import flash.net.URLRequest; import mx.collections.XMLListCollection; import mx.controls.DataGrid; import mx.controls.dataGridClasses.DataGridColumn; public class XMLDataURLLoader { private var URL_String:String = "http://localhost:8080/NBAScorers/"; private var myXMLRequest:URLRequest = new URLRequest(URL_String); private var myLoader:URLLoader = new URLLoader(); [Bindable] public var myDataGrid:DataGrid = new DataGrid(); public function XMLDataURLLoader() { } private function xmlLoad(event:Event):void { var myXML:XML = new XML(event.target.data); trace("Data loaded."); trace(myXML); //trace(myXML.top10ScorersCollection.scorer); /*firstName DataGrid column */ var firstNameCol:DataGridColumn = new DataGridColumn(); firstNameCol.headerText = "First Name"; firstNameCol.dataField = "firstName"; /*lastName DataGrid column */ var lastNameCol:DataGridColumn = new DataGridColumn(); lastNameCol.headerText = "Last Name"; lastNameCol.dataField = "lastName"; /*totalScore DataGrid column */ var totalScoreCol:DataGridColumn = new DataGridColumn(); totalScoreCol.headerText = "Total Score"; totalScoreCol.dataField = "totalScore"; /*position DataGrid column */
DataMatrix Decoder In C#.NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
QR Code Drawer In None
Using Barcode creator for Online Control to generate, create QR Code image in Online applications.
www.OnBarcode.com
var positionCol:DataGridColumn = new DataGridColumn(); positionCol.headerText = "Position"; positionCol.dataField = "position"; var columnArray:Array = new Array(); columnArray.push(firstNameCol); columnArray.push(lastNameCol); columnArray.push(totalScoreCol); columnArray.push(positionCol); myDataGrid["columns"] = columnArray; var myXMLListCollection:XMLListCollection = new XMLListCollection(myXML.scorer); trace("XMLListCollection data bound to the Data Grid."); trace("XMLListCollection " + XMLListCollection); myDataGrid.dataProvider = myXMLListCollection; myDataGrid.percentWidth = 100; myDataGrid.percentHeight = 100; myDataGrid.rowCount = 10; } public function loadXMLData():void { myLoader.addEventListener(Event.COMPLETE, xmlLoad); myLoader.load(myXMLRequest); } } }
Barcode Creation In .NET
Using Barcode creation for Reporting Service Control to generate, create Barcode image in Reporting Service applications.
www.OnBarcode.com
QR Code Creation In Visual C#.NET
Using Barcode creator for VS .NET Control to generate, create Denso QR Bar Code image in .NET applications.
www.OnBarcode.com
Explaining every single line of the preceding code would be redundant, so here s a quick summary. You create the URLLoader instance and load the XML data from the JSP. The load function of URLLoader uses a URLRequest object, which defines the URL. The returned XML is wrapped in an XMLListCollection and bound to a data grid. The DataGrid is implemented using ActionScript alone. Its columns, corresponding data fields, and header texts are explicitly defined and set on the data grid. There s a button and a VBox component in the MXML application. The data grid is added as a child of the VBox component. The Button click handler indirectly, via an intermediate method, invokes the URLLoader load method. The URLLoader class triggers a set of events as the load activity progresses. In the example, we listen to the COMPLETE event. On completion, an event handler is activated that retrieves the returned data, parses it, and binds it to the data grid. That s about it! Although URLLoader is quite similarto HTTPService in generating the output in the example, there are a few fundamental differences:
The events triggered differ and allow for different approaches to interacting with the HTTP request. Binary responses are handled differently. URL variable and parameter manipulation possibilities vary. Support for HTTP methods is not identical.
Copyright © OnBarcode.com . All rights reserved.