WebSphere Studio Application Developer Version 5 Programming Guide Ueli Wahli Ian Brown Fabio Ferraz Maik Schumacher Henrik Sjostrand Develop Java, Web, XML, database, EJB, and Web serv
Trang 1WebSphere Studio
Application Developer
Version 5 Programming Guide
Ueli Wahli Ian Brown Fabio Ferraz Maik Schumacher Henrik Sjostrand
Develop Java, Web, XML, database, EJB,
and Web services applications
Test with built-in and remote
servers
Deploy to WebSphere
Application Server
Front cover
Trang 2WebSphere Studio Application Developer Version 5 Programming Guide
July 2003
International Technical Support Organization
SG24-6957-00
Trang 3© Copyright International Business Machines Corporation 2003 All rights reserved.
Note to U.S Government Users Restricted Rights Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp
First Edition (July 2003)
This edition applies to Version 5 of WebSphere Studio Application Developer and WebSphere Application Server
This book is a rewrite of the IBM Redbook, WebSphere Studio Application Developer
Programming Guide, SG24-6585, which was based on Version 4 of the products
Note: Before using this information and the product it supports, read the information in
“Notices” on page xix
Trang 4© Copyright IBM Corp 2003 All rights reserved iii
Contents
Notices xix
Trademarks xx
Preface xxi
The team that wrote this redbook xxii
Become a published author xxiii
Comments welcome xxiv
Summary of changes from SG24-6585 xxv
July 2003, First Edition xxv
Part 1 Introducing WebSphere Studio 1
Chapter 1 Introduction and concepts 3
Introduction 4
Eclipse 4
Platform architecture 4
Workbench features 6
Plug-in based tooling 6
Role-oriented development with consistent look and feel 7
Vertical and horizontal integration 7
Open standards 7
Open team development 8
File-based IDE 8
WebSphere Studio products 8
What is new in Application Developer Version 5 11
Migration from previous versions 12
Tools 12
Web development tools 13
Relational database tools 14
XML tools 14
Java development tools (JDT) 15
Web services development tools 15
EJB development tools 15
Team collaboration 16
Debugging tools 16
Performance profiling tools 16
Server tools for testing and deployment 17
Plug-in development tools 17
Sample code in this book 18
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EJBBANK database 19
Naming convention 19
Summary 20
Chapter 2 Setting up your Workbench and workspace preferences 21
Workbench basics 22
Workspace basics 23
Application Developer’s log files 26
Preferences 26
Automatic builds 27
File associations 28
Local history 29
Perspectives preferences 31
Internet preferences 32
Java development preferences 33
Java classpath variables 33
Appearance of Java elements 35
Code formatter 35
Compiler options 36
Java Editor settings 37
Installed JREs 39
Javadoc documentation 40
Organize imports 42
Refactoring 43
Templates 43
Summary 46
Chapter 3 Perspectives, views, and editors 47
Integrated development environment (IDE) 48
Application Developer help 48
Perspectives 51
Views 51
Editors 52
Perspective layout 52
Switching perspectives 53
Specifying the default perspective 54
Organizing and customizing perspectives 54
Perspectives walkthrough 56
J2EE perspective 56
Resource perspective 58
Web perspective 59
Java perspective 61
Java Browsing perspective 63
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Java Type Hierarchy perspective 64
Server perspective 66
XML perspective 67
XSL Debug perspective 68
Data perspective 68
Debug perspective 69
Profiling perspective 71
Component Test perspective 72
CVS Repository Exploring perspective 73
Install/Update perspective 75
Plug-in Development perspective 76
Summary 77
Chapter 4 Projects 79
J2EE architecture 80
Web containers and EJB containers 80
EAR files 81
WAR files 81
JAR files 81
Projects and folders 82
Application Developer’s project types 82
Simple project 82
Java project 82
Enterprise Application project 83
Web project 84
EJB project 84
Application Client project 85
Server project 85
Creating a new project 86
Project properties 87
Using templates to create application projects 88
Running the Application Template Wizard 88
Summary 90
Part 2 Developing applications 91
Chapter 5 Developing Java applications 93
Creating and working with a Java project 94
Creating a Java project 94
Creating Java packages 99
Creating Java classes 100
Running your programs 103
Exporting code and running outside Application Developer 106
Locating compile errors in your code 108
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Debugging your code 109
Preparing a utility project 111
Banking model 111
Implementation 113
Importing the implementation 114
Testing the model 114
Programming assists 115
Pluggable JDK 115
Java Scrapbook 115
Code assist 118
Navigating through your code 119
Import generation 120
Tasks view 121
Refactoring 122
Code generation actions 126
Smart compilation 128
Java search and working sets 128
Bookmarks 132
Javadoc 133
Preferences 133
Generating Javadoc 133
Using Ant to generate Javadoc 136
Summary 137
Chapter 6 Developing database applications 139
JDBC overview 140
Data source versus direct connection 141
Application Developer database operations 142
XMI and DDL 142
Data perspective 142
DB Servers view 143
Data Definition view 143
Navigator view 144
Using the DB Servers view 145
Creating a database connection 145
Importing database objects 149
Generate DDL and XML schema files 151
Creating database objects 155
Create database 155
Create schema 157
Create table 157
Create table with foreign key 162
Define the database schema in a database system 163
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Creating SQL statements 165
Using the SQL Statement Wizard 165
Using SQL Query Builder 171
Accessing databases from a Java application 174
Access using the DriverManager 174
Access using a data source 177
J2EE client application 177
Summary 178
Chapter 7 Developing Web applications 179
Introduction 180
Sample application: RedBank 180
Model 180
Controller 181
View 182
Facade 184
Application flow 184
Creating a Web project 185
Adding the banking model as a utility JAR 188
Module dependencies 189
Project properties 189
Web project directory structure 190
Importing existing resources 192
Creating static Web resources 193
Create a simple HTML page 194
Using the Page Designer 196
Using the CSS Designer 200
Creating dynamic Web resources 203
Working with servlets 204
Working with JSPs 210
Creating a server for testing 224
Testing the application 225
Working with filters 226
Creating a filter in Application Developer 227
Editing the filter 230
Working with listeners 232
Creating a listener in Application Developer 233
Editing the listener 234
Creating Web pages from a JavaBean 237
Completing the code 243
Tailoring the generated files 244
Running the generated application 244
Summary 245
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Chapter 8 Developing Web applications with database access 247
Accessing databases from a Web application 248
Creating a Web project 248
Generate Web pages from SQL queries 249
Defining a data source in the server 256
Testing the database application 259
Accessing a database using DB Beans 260
Creating a JSP using DB Beans 261
Accessing a database using JSP taglib 262
Summary 270
Chapter 9 Developing applications with stored procedures 271
What is a stored procedure? 272
Creating a Java stored procedure 272
Importing the database definition into a Web project 272
Using the Stored Procedure Wizard 273
Building the stored procedure 278
Executing the stored procedure 279
Accessing a Java stored procedure 280
Using a main program 280
Generate a JavaBean to access the stored procedure 281
Using the JSP tag library 285
Generate JavaBean Web pages 286
Creating a stored procedure with multiple statements 287
Summary 292
Chapter 10 Developing Struts applications 293
What is Struts? 294
MVC architectural pattern 294
Model 295
View 296
Controller 296
Dependencies between MVC layers 297
MVC framework with Struts 297
Application Developer support for Struts 300
Developing a Web application using Struts 301
Creating a Struts Web project 302
Copying the facade 305
Importing RedBank Web content 305
Updating ApplicationResources.properties 306
Creating the Struts Web diagram 307
Implementing the Struts Web diagram 310
Developing the form beans 310
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Developing the JSPs 316
Developing the actions 332
Using the Struts configuration file editor 336
Testing the application 342
Summary 344
Chapter 11 Developing XML applications 345
XML overview and technologies 346
XML and XML processor 346
DTD and XML schema 346
Schema and style using XSLT and XSL 347
XML namespaces 348
XPath 348
Application Developer XML tools 349
Tools demonstrated in this chapter 349
Setting up your sample project 350
Creating a new XML file from scratch 350
Creating an XML schema 353
XML generators 356
Generating a DTD from XSD 357
Validate XML files 357
Generating an XML file from an XML schema 359
Creating an XSL file 362
Transforming XML files 368
Debugging XSL 369
Generating JavaBeans from DTD or XSD 371
Summary 372
More information 372
Chapter 12 Developing EJB applications 373
Introduction 374
EJB server 377
EJB container 377
EJB components 379
Sample Application: RedBank 384
Creating an EJB project 386
Data transfer objects and helper classes 388
Implementing the model with entity beans 389
Creating the entity beans 389
Editing the entity beans 396
Creating entity relationships 400
Updating the TransRecord create method 404
Creating custom finders 406