book

Ajax on Java

Name: Ajax on Java
Author: Steven Douglas Olson
ISBN: 9780596553647

by Steven Douglas Olson

February 2007

Intermediate to advanced

228 pages

5h 47m

English

O'Reilly Media, Inc.

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Ajax on Java
Dedication
A Note Regarding Supplemental Files
Preface
Ajax: Some HistoryAudienceAssumptions This Book MakesContents of This BookConventions Used in This BookUsing Code ExamplesHow to Contact UsSafari® Books OnlineAcknowledgments
1. Setup
1.1. Requirements1.2. Installing Tomcat1.2.1. A Minimalist Guide to Setting Up Tomcat1.2.2. Setting TOMCAT_HOME1.3. Installing Ant
2. JavaScript for Ajax
2.1. Creating the Application2.1.1. How Is Our JavaScript Function Called?2.1.2. How Do We Get the Value of the Key Pressed?2.1.3. Formatting the Page2.2. Running the Example
3. A Simple Ajax Servlet
3.1. Building and Deploying the Ajax Application3.1.1. Directory Structure3.2. Running the Example3.2.1. So Where’s the XML?
4. XML and JSON for Ajax
4.1. The Character Decoder4.2. Setting Up a Simple XML Document4.2.1. Using a Servlet to Build an XML Document4.2.2. Other Ways to Build the XML Document4.2.2.1. JDOM4.2.2.2. dom4j4.2.2.3. SAX4.3. Back on the Client: Mining the XML4.3.1. XML Parsing with JavaScript4.3.2. Populating the Form on a Microsoft Browser4.3.3. Populating the Form on Other Browsers4.4. Building the Application4.5. Running the Application on Tomcat4.6. Passing Data with JSON4.6.1. Changing the JavaScript for JSON4.7. Summary
5. Getting Useful Data
5.1. Form Entry with Ajax5.1.1. Validating the Username5.1.2. Creating the Database5.1.3. Servicing the Ajax Request: Servlets5.1.4. Loading City and State by Zip Code5.2. Building a Suggestion Field5.2.1. Retrieving the Usernames5.2.2. Creating the Div5.2.3. Handling the Events5.2.3.1. Highlighting a suggestion5.2.4. Configuring the Servlets
6. Ajax Libraries and Toolkits
6.1. Using the Dojo Toolkit6.2. Using the Rico Toolkit6.2.1. Using Rico’s Object Response Type6.3. Using DWR with Ajax6.4. Drag ‘n’ Drop with Scriptaculous and Prototype6.4.1. The User Signup Application6.4.2. Using Prototype to Wrap XMLHttpRequest6.4.3. The User Login Functions6.4.4. The Shopping Functions: Getting a Product List

7. Ajax Tags
7.1. Creating a Tag Library7.1.1. Writing a TLD7.1.2. Using the Tags in a JSP7.1.3. Writing the TagSupport Class7.1.4. Writing the Support Servlet7.1.5. Using Ant to Put It All Together7.2. Third-Party Tag Libraries7.2.1. AjaxTags7.2.1.1. Getting and installing AjaxTags7.2.1.2. Using the <tabPanel> tag7.2.1.3. Writing the servlet code7.2.1.4. Displaying data in the tabs7.2.2. JavaWebParts7.2.3. AjaxAnywhere7.2.3.1. Enabling AjaxAnywhere in the JSP7.2.3.2. Refresh zones7.2.3.3. Writing support for AjaxAnywhere7.2.3.4. The AjaxAnywhere filter7.2.4. Which Tag Library Should I Use?
8. Ajax on Struts
8.1. Struts-Layout8.1.1. Installing Struts-Layout8.1.2. Writing the Struts-Layout JSP8.1.3. Struts Action Forms8.1.4. What’s an Action, and What Happened to My Servlet?8.1.5. The Struts Configuration8.1.6. Where Does the Data Come From?8.1.7. Populating the Suggestion List8.1.8. Struts-Layout Is Cool Because...8.2. Adding Ajax to Struts with DWR8.2.1. Uploading Files8.2.2. Creating the JSP8.2.3. Writing the DWR Configuration File8.2.4. Displaying the Products in the Browser8.2.5. Viewing the DWR-Generated JavaScript8.2.6. Writing the ProductManager Class8.2.7. DWR Is Cool Because...8.3. Ajax with Struts: What Have We Learned Here?
9. JavaServer Faces and Ajax
9.1. The JSF Lifecycle9.2. Writing a Custom JSF Component9.2.1. Writing the JSP Page for the JSF Application9.2.2. Configuring JSF: web.xml and faces-config.xml9.3. Developing a Custom JSF Tag9.3.1. Writing the TLD File9.3.2. Writing the Tag Handler9.3.3. Creating a Renderer and Render Kits9.3.4. Writing the JavaScript Support File9.4. Handling JSF Input by Extending HtmlInputText9.5. Writing the JSF Support for Ajax9.6. Summary
10. Google Web Toolkit
10.1. Getting Started with GWT10.1.1. Hosted Mode Versus Web Mode10.2. Debugging the Application10.3. Fleshing Out the Application: The Client10.3.1. Customizing the Client10.4. Supplying Services to the Client10.4.1. Connecting the Client to the Service10.4.2. Connecting the Service to the Servlet URL10.5. Testing ZipCodes with the Service10.6. GWT Widgets
Index
About the Author
Colophon
Copyright

Overview

This practical guide shows you how to make your Java web applications more responsive and dynamic by incorporating new Ajaxian features, including suggestion lists, drag-and-drop, and more. Java developers can choose between many different ways of incorporating Ajax, from building JavaScript into your applications "by hand" to using the new Google Web Toolkit (GWT).

Ajax on Java starts with an introduction to Ajax, showing you how to write some basic applications that use client-side JavaScript to request information from a Java servlet and display it without doing a full page reload. It also presents several strategies for communicating between the client and the server, including sending raw data, and using XML or JSON (JavaScript Object Notation) for sending more complex collections of data.

The book then branches out into different approaches for incorporating Ajax, which include:

The Prototype and script.aculo.us Javascript libraries, the Dojo and Rico libraries, and DWR
Integrating Ajax into Java ServerPages (JSP) applications
Using Ajax with Struts
Integrating Ajax into Java ServerFaces (JSF) applications
Using Google's GWT, which offers a pure Java approach to developing web applications: your client-side components are written in Java, and compiled into HTML and JavaScript

Ajax gives web developers the ability to build applications that are more interactive, more dynamic, more exciting and enjoyable for your users. If you're a Java developer and haven't tried Ajax, but would like to get started, this book is essential. Your users will be grateful.

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