Professional Java for Web Applications

The comprehensive Wrox guide for creating Java web applications for the enterprise

This guide shows Java software developers and software engineers how to build complex web applications in an enterprise environment. You'll begin with an introduction to the Java Enterprise Edition and the basic web application, then set up a development application server environment, learn about the tools used in the development process, and explore numerous Java technologies and practices. The book covers industry-standard tools and technologies, specific technologies, and underlying programming concepts.

• Java is an essential programming language used worldwide for both Android app development and enterprise-level corporate solutions

• As a step-by-step guide or a general reference, this book provides an all-in-one Java development solution

• Explains Java Enterprise Edition 7 and the basic web application, how to set up a development application server environment, which tools are needed during the development process, and how to apply various Java technologies

• Covers new language features in Java 8, such as Lambda Expressions, and the new Java 8 Date & Time API introduced as part of JSR 310, replacing the legacy Date and Calendar APIs

• Demonstrates the new, fully-duplex WebSocket web connection technology and its support in Java EE 7, allowing the reader to create rich, truly interactive web applications that can push updated data to the client automatically

• Instructs the reader in the configuration and use of Log4j 2.0, Spring Framework 4 (including Spring Web MVC), Hibernate Validator, RabbitMQ, Hibernate ORM, Spring Data, Hibernate Search, and Spring Security

• Covers application logging, JSR 340 Servlet API 3.1, JSR 245 JavaServer Pages (JSP) 2.3 (including custom tag libraries), JSR 341 Expression Language 3.0, JSR 356 WebSocket API 1.0, JSR 303/349 Bean Validation 1.1, JSR 317/338 Java Persistence API (JPA) 2.1, full-text searching with JPA, RESTful and SOAP web services, Advanced Message Queuing Protocol (AMQP), and OAuth

Professional Java for Web Applications is the complete Wrox guide for software developers who are familiar with Java and who are ready to build high-level enterprise Java web applications.

Auteur

Nicholas S. Williams is a recognized expert in Java and
related technologies. In 2010, he was named Software Engineer of
the Year for Middle Tennessee. Nick participates extensively in the
Open Source community, contributing bug fixes, new features, and
documentation to projects like Apache Log4J, Apache Tomcat, Jackson
Mapper, Spring Framework, and Spring Security.

Contenu

Introduction xxiii

Part I: Creating Enterprise Applications

Chapter 1: Introducing Java Platform, Enterprise Edition 3

A Timeline of Java Platforms 3

Understanding the Basic Web Application Structure 13

Summary 18

Chapter 2: Using Web Containers 19

Choosing a Web Container 19

Installing Tomcat on Your Machine 23

Deploying and Undeploying Applications in Tomcat 27

Debugging Tomcat from Your IDE 30

Summary 39

Chapter 3: Writing Your First Servlet 41

Creating a Servlet Class 42

Configuring a Servlet for Deployment 46

Understanding doGet(), doPost(), and Other Methods 51

Using Parameters and Accepting Form Submissions 56

Configuring your Application Using Init Parameters 61

Uploading Files from a Form 64

Making Your Application Safe for Multithreading 69

Summary 71

Chapter 4: Using JSPs to Di splay Content 73

is Easier Than output.println(
) 74

Creating Your First JSP 78

Using Java within a JSP (and Why You Shouldn't!) 88

Combining Servlets and JSPs 94

A Note about JSP Documents (JSPX) 102

Summary 104

Chapter 5: Maintaining State Using Sessions 105

Understanding Why Sessions are Necessary 106

Using Session Cookies and URL Rewriting 107

Storing Data in a Session 116

Applying Sessions Usefully 129

Clustering an Application That Uses Sessions 139

Summary 142

Chapter 6: U sing the Expression Language in JSPs 143

Understanding Expression Language 144

Writing with the EL Syntax 147

Using Scoped Variables in EL Expressions 160

Accessing Collections with the Stream API 167

Replacing Java Code with Expression Language 172

Summary 175

Chapter 7: U sing the Java Standard Tag Library 177

Introducing JSP Tags and the JSTL 178

Using the Core Tag Library (C Namespace) 182

Using the Internationalization and Formatting Tag Library (FMT Namespace) 193

Using the Database Access Tag Library (SQL Namespace) 203

Using the XML Processing Tag Library (X Namespace) 205

Replacing Java Code with JSP Tags 205

Summary 208

Chapter 8: Writing Custom Tag and Function Libraries 209

Understanding TLDs, Tag Files, and Tag Handlers 210

Creating Your First Tag File to Serve as an HTML Template 219

Creating a More Useful Date Formatting Tag Handler 221

Creating an EL Function to Abbreviate Strings 226

Replacing Java Code with Custom JSP Tags 227

Summary 232

Chapter 9: Improving Your Application Using Filters 233

Understanding the Purpose of Filters 234

Creating, Declaring, and Mapping Filters 235

Ordering Your Filters Properly 239

Investigating Practical Uses for Filters 247

Simplifying Authentication with a Filter 254

Summary 255

Chapter 10: Making Your Application Interactive with WebSockets 257

Evolution: From Ajax to WebSockets 258

Understanding the WebSocket APIs 268

Creating Multiplayer Games with WebSockets 273

Using WebSockets to Communicate in a Cluster 284

Adding Chat with Support to the Customer Support Application 288

Summary 296

Chapter 11: Using Logging to Monitor Your Application 297

Understanding the Concepts of Logging 298

Using Logging Levels and Categories 303

Choosing a Logging Framework 305

Integrating Logging into Your Application 312

Summary 320

Part II: Adding Spring Framework Into the Mix

Chapter 12: Introducing Spring Framework 323 What is Spring Fram...