Beginning Spring Framework 2

Acknowledgments x

Introduction xix

Chapter 1: Jump Start Spring 2 1

All About Spring 2

Focus on Simplicity 2

Applying Spring 2

Creating a Modularized Application 3

Using Spring to Configure a Modularized Application 8

Wiring Beans Automatically by Type 14

Understanding Spring’s Inversion of Control (IoC) Container 16

Adding Aspect-Oriented Programming to the Mix 20

Adding a Logging Aspect 21

Beyond Plumbing — Spring API Libraries 25

Using Spring APIs To Facilitate Application Creation 26

Summary 27

Chapter 2: Designing Spring Applications 29

Overview of the PIX Album-Management System 30

The PIX System Requirements 31

Discovering the Domain Model 33

The PixUser POJO 33

The Affiliate POJO 35

The Picture Object 36

The Album POJO 37

The Comment POJO 38

The POJO Relationships 39

The Importance of Unit Testing 45

POJO-Based Design and Containerless Unit Testing 46

Regression Testing 46

Working with a Unit-Testing Framework 47

Summary 52

Chapter 3: Spring Persistence Using JPA 53

Java Persistence 54

JDBC Architecture 54

Traditional JDBC Approach 56

DAO — Unifying Data Access 64

Spring DAO Support 64

Spring Exception Translation 73

Spring and JPA 74

Entities 74

Spring as a JPA Container 81

About JPA APIs 81

JPA the Easy Way — Using Annotations 81

SPRING JPA Exception Translation 82

SPRING JPA DAOs 83

Spring JPA Configuration 84

Persistence and the PIX Domain Model 87

Persisting The PixUser POJO 87

Implementing PixUser Repository DAO 89

Implementing the Album Repository DAO 90

Testing the Persistence Layer 91

Spring Test Support 92

Executing the Persistence Test Suite 92

Testing the PIX Repositories 92

Summary 93

Chapter 4: Using Spring MVC to Build Web Pages 95

The MVC Architectural Pattern 95

The Sample Application’s Architecture 96

Spring MVC Development 99

Processing Web Requests with Controllers 99

Presenting the Model with a View 105

Getting Data from the User with Forms 109

A Basic Form-Submission Workflow 109

Using the Form View 112

When Things Go Wrong 123

Summary 124

Chapter 5: Advanced Spring MVC 125

Submitting a Form Across Multiple Pages 126

Adding Pictures to an Album 126

Developing Wizard Form Pages 127

Implementing Wizard Form Actions 131

Validating Data Submitted Through a Wizard 132

Uploading Files 133

Getting More Stuff Done with the Same Controller 134

Creating a Different View 137

Your First View 138

Saving an Album to PDF 139

Generating an RSS Feed 142

Personalization 146

Retrieving Text Labels from a Message Source 146

Displaying Application Labels in a Different Language 148

Changing the Application’s Language Settings 150

Allowing the User to Personalize the Application 151

Summary 154

Chapter 6: Spring Web Flow 155

Examining a Sample Work Flow for Loan Applications 156

Introducing Spring Web Flow 157

How SWF Works with Spring MVC 158

Launching Flows 159

Implementing SWF in the PixWeb Application 161

The Login Flow 161

The Album Creation Flow 176

Implementing Actions 178

Implementing Views 181

Testing Flows 183

Architectural Overview 185

Advanced Topics 186

REST-Style URLs 187

Flow Execution Repositories 188

Flow Execution Repository Implementations 189

Subflows and Attribute Mappers 189

Flow Execution Listeners 189

Exception Handlers 190

Summary 190

Chapter 7: Ajax and Spring: Direct Web Remoting Integration 191

Web 2.0: The World of Ajax 192

Ajax Basics 192

Client-Side Ajax Development with JavaScript 194

The XMLHttpRequest Object 194

Introducing Direct Web Remoting 2 199

Downloading DWR 2 201

Working with DWR 2 202

Integrating Spring and DWR 2 210

Summary 229

Chapter 8: Spring and JMS — Message-Driven POJOs 231

JMS Concepts 232

JMS Messaging Domains 232

Point-To-Point Messaging 232

Publish/Subscribe Messaging 233

Persistence versus Durability 234

The JMS Message 234

Message Header 234

Message Properties 235

Message Selectors 235

Message Body 235

Producing JMS Messages 236

Consuming JMS Messages 236

Synchronous Message Consumption 236

Asynchronous Message Consumption 237

The Spring JMS Framework 238

The Spring JMS Packages 238

The JmsTemplate Class 239

Message Listener Containers 240

Destinations 241

Transactions 241

Configuring Message-Driven POJOS 241

Realizing the JMS Use Case 242

Modeling Message-Driven POJOs 242

The PIX Web POJOS 242

Changing the PIX Web POJOs Into Message-Driven POJOs 245

A JMS Provider — Apache ActiveMQ 247

The JMS Template in the PIX Web Application 253

Summary 256

Chapter 9: Spring Web Services and Remoting 259

Web Service Benefits 260

Introducing Web Services 260

Web Services Architecture 261

The Network Layer 261

XML 261

SOAP 262

WSDL 262

UDDI 264

Web Services Interactions 265

Web Services Interoperability 266

Java Web Service Technologies 266

Java Web Application Web Services 266

Spring Remoting 268

SOAP Frameworks 268

Java-to-XML Bindings 269

XFire 269

Spring Web Services with XFire 270

Realizing the PIX AffiliateManagement Use Case 270

Invoking Web Services 277

SOAP Handlers 278

Testing SOAP Handlers with XFire 278

Summary 284

Chapter 10: Web Service Consumer and Interoperation with .NET 285

Creating Web Service Consumers — Overview 286

Describing Web Services with WSDL 286

Creating a Web Service Consumer with XFire 287

The XFire Maven Plugin 287

Invoking Web Service Methods via XFire-Generated Stubs 287

Understanding the E-Mail-Validation Web Service Consumer in PIX 288

Examining a WSDL Document 290

WSDL Description of a Web Service Endpoint 291

Generating Web Service Stubs from WSDL Using XFire 292

The XFire WsGen Tool 294

Generated Interface for Invocation of Web Service 295

Creating a Web Service Consumer with XFire-Generated Stubs 295

Add a Web Service Consumer to PIX 300

Web Service Interoperability 304

WS-I and Web Service Interoperability 304

Expose PIX Service for .NET Web Service Consumers 304

Summary 313

Chapter 11: Rapid Spring Development with Spring IDE 315

Brief Feature Overview 316

Installing and Setting Up Your Eclipse Environment 317

Installing Spring IDE 317

Preparing an Eclipse Project 319

Support for Spring Beans Configuration Files 325

Viewing Spring Bean Definitions 325

Validating Spring Bean Definition Files 328

XML Editing 332

Searching for and Navigating to Bean Definitions 335

Visual Support for Spring AOP Configurations 337

Enabling AOP Support for Spring Projects 338

Working with Spring IDE’s AOP Support 339

Integration with the AspectJ Development Tools 343

Web Flow Development with Spring IDE 344

Setting Up Your Spring Web Flow Project 344

Validating Spring Web Flow Definition Files 348

Editing Spring Web Flow Definition Files 350

Graphical Editor for Web Flow Definitions 351

Summary 353

Chapter 12: Spring AOP and AspectJ 355

Comparing Aspect-Oriented Programming to Object-Oriented Programming 355

What Is AOP? 357

Crosscutting Concerns 357

AOP in Spring 361

XML Schema-Based Support 362

The AOP Namespace Explored 362

Advice Parameters 367

AspectJ Support 368

@AspectJ Explored 368

@AspectJ-Style Advice 372

Performance Monitoring with AOP and JETM 376

Summary 379

References 380

Chapter 13: More AOP: Transactions 381

Understanding Transactions 382

Understanding Spring Transaction Management 383

Spring Transaction Abstraction 384

Applying AOP to Transactions 387

Adding Spring Transaction Support to PIX 38

Selecting the Transaction Manager 389

Coding Spring Transactions 397

Global Transactions 405

Summary 406

Appendix A: Maven 2 Basics 407

Appendix B: Spring and Java EE 439

Appendix C: Getting Ready for the Code Examples 451

Index 453