Download Ajax on Java by Steven Olson Douglas PDF

By Steven Olson Douglas

This sensible advisor indicates you ways to make your Java net purposes extra responsive and dynamic through incorporating new Ajaxian gains, together with recommendation lists, drag-and-drop, and extra. Java builders can make a choice from many alternative methods of incorporating Ajax, from development JavaScript into your functions "by hand" to utilizing the recent Google net Toolkit (GWT).
Ajax on Java begins with an creation to Ajax, exhibiting you ways to put in writing a few simple functions that use client-side JavaScript to request info from a Java servlet and demonstrate it with out doing an entire web page reload. It additionally provides numerous techniques for speaking among the customer and the server, together with sending uncooked info, and utilizing XML or JSON (JavaScript item Notation) for sending extra complicated collections of data.
The e-book then branches out into diversified ways for incorporating Ajax, which come with: The Prototype and script.aculo.us Javascript libraries, the Dojo and Rico libraries, and DWR Integrating Ajax into Java ServerPages (JSP) functions utilizing Ajax with Struts Integrating Ajax into Java ServerFaces (JSF) functions utilizing Google's GWT, which deals a natural Java method of constructing internet functions: your client-side elements are written in Java, and compiled into HTML and JavaScript
Ajax supplies internet builders the facility to construct functions which are extra interactive, extra dynamic, extra interesting and relaxing on your clients. if you are a Java developer and have not attempted Ajax, yet want to start, this publication is vital. Your clients should be thankful.

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Com to register it. Thanks The actual startElement( ) method declaration looks like this: public void startElement(String uri, String localName, String qName, Attributes atts) The uri parameter is used for the namespace, but since this example does not use a namespace, a null is passed in. The second parameter, localName, is also used for the namespace and not needed in this example. The third parameter, qName, is the qualified name. The last parameter, atts, is used when the element has attributes; pass innull if attributes are not used, as in this case.

Thanks consider using it. There are other ways to create an XML document. For example, the Apache project's Element Construction Set (ECS) allows you to create an XML document, but there is no method to add data to the document at this time, so for this application ECS is not useful. com to register it. 3. Back on the Client: Mining the XML Here's where the fun begins. The client code in Example 4-5 shows how to mine the data fields from the XML document that the server sends. Example 4-5. com to register it.

As you can see in this figure, two versions of our Ajax converter have been deployed successfully and are currently running. The directory in which you installed the application becomes part of the path. Figure 4-3. Tomcat Web Application Manager Click the link under Applications to open a browser window that accesses the directory of your application. html" link to see the application. com to register it. 6. Passing Data with JSON Now that you've seen how to use XML as the data vehicle, we must talk about some of the problems with XML.

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