tailieunhanh - WebSphere Studio Application Developer Version 5 Programming Guide part 38

WebSphere Studio Application Developer part 38 provides integrated development tools for all e-business development roles, including Web developers, Java developers, business analysts, architects, and enterprise programmers. The customizable, targeted, role-based approach of WebSphere Studio Application Developer will be characteristic of all new products built on the WebSphere Studio Workbench. It is well integrated with WebSphere Application Server and provides built-in server test environments that can be used for testing and profiling Web applications | One thing that differs however is the response you get if you do not enter the requested data. For example if you select to transfer money between two accounts but you do not enter either the amount or the destination account number the validate method of the transactionForm form bean will report these two errors and you will be returned to the page to correct the problem Figure 10-36 . Figure 10-36 Sample run of the Struts application with errors Summary In this chapter we built a simple Web application using the Struts framework. We reused the model from the Web application we built in Chapter 7 Developing Web applications on page 179 but replaced the controller and view parts with the Struts framework. We tried to use Application Developer s Struts tools and wizards as much as possible to show you what they can do. 344 WebSphere Studio Application Developer Version 5 Programming Guide 11 Developing XML applications This chapter introduces you to Application Developer s XML capabilities and discusses how to work with some of these XML features. Note that some parts of this chapter have been taken from an existing IBM Redbook The XML Files Development of XML XSL Applications Using WebSphere Studio Version 5 SG24-6586. This book provides more detailed information and examples of developing XML XSL applications using Application Developer. This chapter describes the following topics XML overview and technologies Application Developer XML tools Copyright IBM Corp. 2003. All rights reserved. 345 XML overview and technologies Today the extensible markup language XML is starting to become a key piece of software infrastructure. The main idea is extremely simple. It is a text based language like HTML but is rigidly enforced and therefore can be built upon easily. XML was designed to describe data and to focus on the data unlike HTML which was designed to display data. XML was created to structure and store data. XML and XML processor XML is tag-based .