Pro Apache Struts with Ajax

By: John Carnell, Kunal Mittal (Editor), Rob Harrop (As told to)

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Paperback | 28 June 2010

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530 Pages

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This book maps out how to employ the most widely used Apache Struts MVC Web framework. The authors take an application-centric approach: the development of an application drives the Struts along with Ajax coverage, rather than the other way around. Improper design can lead to long term dependencies on the Struts framework, which makes code re-use difficult. Here the authors helpfully discuss Struts from an anti-pattern perspective, in a chapter entitled What We Do Wrong: Web Antipatterns Explained. Other chapter titles include: Managing Business Logic with Struts; Architecting the Data Access Tier with ObjectRelationalBridge; Building Flexible Front-Ends with the Tiles Framework; Dynamic Forms using Ajax and the Struts Validator Framework; Speeding Struts Development with XDoclet, and Logging and Debugging. Appendices discuss JavaEdge setup, Struts development tools, and Apache Struts Ti/WebWork. The end result: you will learn to use Struts very effectively

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Non-Fiction Computing & I.T.Graphical & Digital Media Applications Web Graphics & Design Computer Networking & Communications Networking Packages Computer Programming & Software Development Programming & Scripting Languages Software Engineering Web Programming Databases

About the Authors	p. xv
About the Editor	p. xvi
About the Technical Reviewers	p. xvii
Acknowledgments	p. xviii
Preface for This Edition	p. xix
Preface from Previous Edition	p. xx
What We Do Wrong: Web Antipatterns Explained	p. 1
What This Book Is About	p. 3
What This Chapter Is About	p. 4
Challenges of Web Application Development	p. 4
Enterprise Services	p. 6
Application Services	p. 7
An Introduction to Patterns and Antipatterns	p. 8
Web Application Antipatterns	p. 9
Concern Slush	p. 10
Tier Leakage	p. 13
Hardwired	p. 16
Validation Confusion	p. 18
Tight-Skins	p. 20
Data Madness	p. 22
Antipatterns, JOS Frameworks, and Economics	p. 24
The JavaEdge Application	p. 27
Summary	p. 28
Struts Fundamentals	p. 31
The JavaEdge Application Architecture	p. 32
The Design	p. 33
Using Struts to Implement the MVC Pattern	p. 34
Getting Started: The JavaEdge Source Tree	p. 37
The Power of the Command Pattern	p. 48
Constructing the Presentation Tier	p. 52
The JavaEdge Home Page	p. 53
Bean Tags	p. 57
Logic Tags	p. 67
Iteration Tags	p. 68
Conditional Tags	p. 69
Movement Tags	p. 71
Summary	p. 73
Form Presentation and Validation with Struts	p. 75
Problems with Form Validation	p. 75
Using Struts for Form Validation	p. 77
Implementing Form Validation with Struts	p. 79
The struts-config.xml File	p. 80
Struts ActionForm Class	p. 81
Prepopulating an ActionForm with Data	p. 87
Another Technique for Prepopulation	p. 91
Prepopulating a Form the Correct Way	p. 92
Validating the Form Data	p. 93
The Struts HTML Tag Library	p. 103
Setting Up a Struts HTML Form	p. 104
Using Text and TextArea Input Fields	p. 107
Drop-Down Lists, Checkboxes, and Radio Buttons	p. 108
Building More Dynamic ActionForms	p. 111
ActionForms and Business Logic	p. 118
Summary	p. 122
Managing Business Logic with Struts	p. 123
Business Logic Antipatterns and Struts	p. 124
Concern Slush and Struts	p. 125
Tier Leakage and Struts	p. 130
Separating Business Logic from Struts	p. 132
Implementing the Design Patterns	p. 134
Implementing the Business Delegate Pattern	p. 135
Implementing the Service Locator Pattern	p. 141
The Service Locator Revisited	p. 149
EJBs and Struts	p. 154
Handling Exceptions in the Action Class	p. 160
Exception Handling in Struts 1.0.x	p. 161
Exception Handling in Struts 1.1 and Later	p. 163
Rewriting the ApplicationException Class	p. 164
Setting Up the struts-config.xml File	p. 164
Writing a Custom ExceptionHandler	p. 167
Summary	p. 171
Architecting the Data Access Tier with
ObjectRelationalBridge	p. 173
Developing a Data Access Strategy	p. 174
The JavaEdge Data Access Model	p. 176
Value Objects	p. 182
The JavaEdge Value Objects	p. 184
Using an O/R Mapping Tool	p. 187
Setting Up the Object/Relational Mappings	p. 190
Which Sequence Manager to Use?	p. 201
OJB in Action	p. 208
Retrieving Data: A Simple Example	p. 212
Retrieving Data: A More Complicated Example	p. 215
Storing Data Using OJB	p. 217
Deleting Data with OJB	p. 219
Bringing It All Together	p. 219
Summary	p. 223
Building Flexible Front-Ends with the Tiles Framework	p. 225
What Is the Tiles Framework?	p. 227
Enabling Struts Version 1.1 to Use Tiles	p. 228
Configuring the Tiles Plug-In	p. 229
The tiles-defs.xml File	p. 231
Adding the Tiles TLDs	p. 231
Your First Tiles Template	p. 232
What Are Tiles Definitions?	p. 235
Tiles Definitions: A JSP-Based Approach	p. 236
Overriding the Attribute Values in a Tiles Definition	p. 238
Using Dummy Values in Your Tiles Definition	p. 239
Disadvantages of JSP Tiles Definitions	p. 239
Anatomy of the tiles-defs.xml File	p. 240
Inheritance Using Tiles Definitions	p. 241
Extending a Tiles Definition	p. 244
Modifying the template.jsp File	p. 245
Adding the New Definition to tiles-defs.xml	p. 246
Modifying the .homePage Definition	p. 247
Mapping Tiles Definitions to Action Forwards	p. 248
Summary	p. 252
Dynamic Forms and the Struts Validator Framework	p. 255
Introducing Dynamic Forms	p. 256
Defining the postStoryForm Struts Form Bean	p. 256
Writing the PostStoryDynaForm.java Implementation	p. 258
Some Thoughts About BeanUtils and the Preceding Code	p. 263
The Jakarta Commons Validator Framework	p. 266
Validator Framework Setup	p. 266
Implementing the Required Fields Validation	p. 268
The maxlength Validation Rule	p. 270
Use the Validator Framework Within an ActionForm Class	p. 273
Writing Your Own Validation Rules	p. 275
Implementing the Vulgarity Rule	p. 275
Adding the Vulgarity Rule to the validator-rules.xml File	p. 279
Struts Validation and Potential Long-Term Consequences	p. 281
Implementing the Vulgarity Rule in a Form	p. 282
An ActionForm Without Java	p. 283
When to Use the Validator Framework	p. 284
Summary	p. 285
Speeding Struts Development with XDoclet	p. 289
Installing XDoclet	p. 291
What Exactly Is XDoclet?	p. 292
From XDoclet to Source, and All the Steps in Between	p. 295
The Available XDoclet Tags	p. 297
Anatomy of an XDoclet Tag	p. 298
Integrating Ant and XDoclet	p. 299
Using Merge Points	p. 302
XDoclet and Struts	p. 303
Declaring Struts Form Beans	p. 304
Declaring Struts Actions	p. 304
XDoclet and Java Inheritance	p. 306
Declaring Application Exceptions	p. 306
Building struts-config.xml Using	p. 308
XDoclets and the Validator Framework	p. 309
Generating the Validator Tags from Ant	p. 313
Summary	p. 315
Logging and Debugging	p. 317
Why Use Logging?	p. 318
Log Message Levels	p. 319
Simple Web Application Logging	p. 319
Logging with ServletContext	p. 319
Using Commons Logging	p. 320
The Java 1.4 Logging API	p. 325
Apache log4j	p. 328
Using log4j with Commons Logging	p. 330
Log Inheritance	p. 334
Logging Performance	p. 337
Logging Best Practices	p. 338
JBoss and log4j	p. 342
Integrating Logging into JavaEdge	p. 343
Logging in the Web Tier	p. 349
Debugging Struts Applications Using JBoss and Eclipse	p. 351
Debugging the JavaEdge Application	p. 353
Hot-Deploy	p. 355
Debugging the Struts Framework	p. 356
Summary	p. 356
Velocity Template Engine	p. 359
What Is a Template Engine?	p. 359
Getting Started	p. 360
Velocity and VelocityContext Classes	p. 362
Velocity Template Language	p. 362
Variables	p. 363
Accessing Variables	p. 363
Variable Values	p. 364
JavaBean Properties	p. 369
Arithmetic	p. 369
Directives	p. 370
Macros	p. 379
Struts and Velocity	p. 381
VelocityTools	p. 381
Struts and Velocity	p. 388
Best Practices for Velocity Use	p. 388
Use Macros	p. 388
Know When to Use #parse and When to Use #include	p. 388
Use JavaBean Property Names	p. 389
Summary	p. 389
Extending the Struts Framework	p. 391
Extending Action and ActionForm	p. 391
Providing Common Services to Your Actions	p. 392
Hooking into the Action Execution	p. 397
Extending RequestProcessor	p. 398
Building a RequestProcessor	p. 399
Using RequestProcessor Instead of Filter	p. 400
Verifying Host Access with RequestProcessor	p. 403
Creating Configuration Beans	p. 403
Building the JavaEdgeActionMapping	p. 404
Revisiting RequestProcessor	p. 405
Building a Plug-In	p. 409
Newsletter Service Basics	p. 410
NewsletterManager	p. 410
NewsletterTask	p. 415
NewsletterPlugIn	p. 416
Configuring the Plug-In	p. 419
Summary	p. 419
Struts and Ajax	p. 421
Ajax Dissected	p. 421
Ajax on Google	p. 422
Ajax on Yahoo	p. 422
Where Should I Use Ajax?	p. 422
Ajax and Web 2.0	p. 423
Ajax and SOA	p. 423
Ajax Internals	p. 423
Ajax Request-Response Cycle	p. 424
XMLHttpRequest Object	p. 425
Ajax and Struts in Action	p. 426
Cities.jsp	p. 426
GetCitiesNamesAction	p. 429
CitiesDAO	p. 430
Summary	p. 432
JavaEdge Setup and Installation	p. 433
Environment Setup	p. 433
Installing MySQL	p. 433
Installing JBoss	p. 436
Installing Apache Ant	p. 436
Obtaining the JavaEdge Code and Dependencies	p. 437
Installing the JavaEdge Database	p. 437
Building JavaEdge	p. 438
Deploying JavaEdge	p. 439
Summary	p. 440
Struts Development Tools	p. 441
Eclipse	p. 442
Eclipse Summary	p. 444
Eclipse Next Step	p. 444
NetBeans	p. 444
JSP, HTML, XML, and DTD Editors	p. 444
In-Process Tomcat Server	p. 446
NetBeans Summary	p. 446
NetBeans Next Step	p. 447
IBM WebSphere	p. 447
Creating a Struts Project	p. 447
Managing Configuration	p. 448
Creating Actions and ActionForms	p. 449
Web Diagrams	p. 451
WebSphere Summary	p. 451
WebSphere Next Step	p. 452
Borland JBuilder 2006	p. 452
Web Projects	p. 452
Configuration File Editor	p. 453
JSP Editor	p. 454
UML Designer	p. 454
JavaDoc Preview	p. 454
Action Designer	p. 456
JBuilder Summary	p. 456
JBuilder Next Step	p. 457
Struts Console	p. 457
Getting Started	p. 457
Editing the Struts Configuration File	p. 458
Editing Other Configuration Files	p. 460
Struts Console Summary	p. 460
Struts Console Next Step	p. 461
Exadel Studio	p. 461
Struts Projects	p. 461
Configuration File Editors	p. 461
XML Editor	p. 463
JSP Editor	p. 463
Web Flow Designer	p. 465
Exadel Studio Summary	p. 465
Exadel Studio Next Step	p. 466
XDoclet	p. 466
Apache JMeter	p. 466
Getting Started	p. 466
Features	p. 466
Creating a Sample Test	p. 467
JMeter Summary	p. 470
JMeter Next Step	p. 471
Summary	p. 471
Struts and Strecks	p. 473
Using Strecks	p. 473
@Controller and @ActionInterface	p. 474
@NavigateForward	p. 475
@BindSimple and @ValidateRequired	p. 475
What You Can Do with Strecks	p. 476
Is Strecks for Me?	p. 476
Index	p. 477
Table of Contents provided by Publisher. All Rights Reserved.

Pro Apache Struts with Ajax

At a Glance

Paperback

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How to return your order

Defective items

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