Java EE 6入门教程：基本概念

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Java EE 6教程第一卷：基础概念Beta版是Sun Microsystems, Inc.官方发布的最新Java Enterprise Edition (Java EE)规范教材，旨在为开发者提供全面而深入的理解Java EE 6平台的基础概念和技术。该教程发布于2009年6月，版权属于Sun Microsystems。在《Java EE 6 Tutorial, Volume I: Basic Concepts Beta》中，读者可以预期学习到以下关键知识点： 1. **Java EE 6概述**：本部分介绍了Java EE 6的核心特性，包括其在企业级应用开发中的定位，与先前版本（如Java EE 5）的主要区别，以及它如何支持企业级应用的构建、部署和管理。 2. **平台架构**：涵盖了Java EE 6的组件模型，如Servlet、JSP、EJB（Enterprise JavaBeans）、JSF（JavaServer Faces）、CDI（Contexts and Dependency Injection）、以及容器（如 Glassfish或WebLogic等）的工作原理和协作。 3. **安全性**：介绍Java EE 6的安全模型，包括用户身份验证、授权、数据加密和访问控制机制，确保企业应用的数据和资源得到保护。 4. **服务端编程**：详细讲解如何使用Servlet和JSP进行动态网页开发，以及如何利用EJB进行业务逻辑的封装和持久化处理。 5. **Web服务与RESTful API**：探讨Java EE 6对Web服务的支持，包括SOAP和RESTful风格API的设计和实现。 6. **Java Persistence API (JPA)**：介绍如何通过JPA进行对象关系映射，实现数据库操作的抽象，提高开发效率。 7. **企业消息传递与集成**：涉及JMS（Java Message Service）和WebSocket等技术，帮助开发者构建可扩展和响应式的通信系统。 8. **MVC设计模式的应用**：讲解如何在Java EE 6环境中采用Model-View-Controller (MVC)架构模式进行开发，以实现界面分离和应用程序解耦。 9. **模块化与依赖管理**：介绍模块化开发的重要性，以及如何使用Java EE 6的模块化工具和标准来组织项目结构，降低维护成本。 10. **最佳实践与性能优化**：提供针对Java EE 6平台的性能调优建议，包括内存管理、线程池配置和网络优化等方面。该教程适合初级到中级的Java开发者，无论你是希望熟悉Java EE 6的新手，还是寻求提升现有技能的开发者，都能从中获得宝贵的知识和实践经验。同时，由于可能包含第三方材料，如Berkeley BSD系统和UNIX技术，读者还需了解相关的许可协议。对于政府用户，需遵循Sun Microsystems的标准许可协议和适用的FAR条款。

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Component-Managed Sign-On ............................................................................................... 501

Conguring Resource Adapter Security ................................................................................. 502

Mapping an Application Principal to EIS Principals ............................................................. 503

22 Securing Web Applications ..............................................................................................................505

Overview of Web Application Security .......................................................................................... 506

Working with Security Roles ........................................................................................................... 507

Declaring Security Roles ........................................................................................................... 508

Mapping Security Roles to Enterprise Server Groups ........................................................... 509

Checking Caller Identity Programmatically .................................................................................. 510

Declaring and Linking Role References .................................................................................. 511

Dening Security Requirements for Web Applications ............................................................... 513

Declaring Security Requirements Using Annotations .......................................................... 513

Declaring Security Requirements Programmatically ............................................................ 516

Declaring Security Requirements in a Deployment Descriptor ........................................... 517

Specifying a Secure Connection ............................................................................................... 523

Specifying an Authentication Mechanism .............................................................................. 525

Examples: Securing Web Applications ........................................................................................... 534

Example: Using Form-Based Authentication with a JSP Page ............................................. 535

Example: Basic Authentication with a Servlet ........................................................................ 545

Example: Basic Authentication with JAX-WS ........................................................................ 553

Part VII Java EE Supporting Technologies ................................................................................................... 561

23 Introduction to Java EE Supporting Technologies ....................................................................... 563

Transactions ....................................................................................................................................... 563

Resources ............................................................................................................................................ 564

The Java EE Connector Architecture and Resource Adapters ............................................. 564

Java Message Service .................................................................................................................. 564

JDBC ............................................................................................................................................ 565

24 Transactions ...................................................................................................................................... 567

What Is a Transaction? ..................................................................................................................... 567

Container-Managed Transactions .................................................................................................. 568

Contents

The Java EE 6 Tutorial,Volume I • June 2009 (Beta)16

Transaction Attributes .............................................................................................................. 568

Rolling Back a Container-Managed Transaction .................................................................. 572

Synchronizing a Session Bean’s Instance Variables ............................................................... 573

Methods Not Allowed in Container-Managed Transactions ............................................... 573

Bean-Managed Transactions ........................................................................................................... 573

JTA Transactions ....................................................................................................................... 574

Returning without Committing ............................................................................................... 574

Methods Not Allowed in Bean-Managed Transactions ........................................................ 575

Transaction Timeouts ....................................................................................................................... 575

Updating Multiple Databases .......................................................................................................... 575

Transactions in Web Components ................................................................................................. 577

25 Resource Connections ......................................................................................................................579

Resources and JNDI Naming ........................................................................................................... 579

DataSource Objects and Connection Pools ................................................................................... 580

Resource Injection ............................................................................................................................. 581

Field-Based Injection ................................................................................................................. 582

Method-Based Injection ............................................................................................................ 583

Class-Based Injection ................................................................................................................ 583

Resource Adapters ............................................................................................................................. 584

Resource Adapter Contracts ..................................................................................................... 584

MetaData Annotations ..................................................................................................................... 588

Common Client Interface ................................................................................................................ 589

Further Information about Resources ............................................................................................ 590

Index ................................................................................................................................................... 591

Contents

TABLE P–1 Books in the Enterprise Server Documentation Set

Book Title Description

Release Notes Provides late-breaking information about the software and the

documentation. Includes a comprehensive, table-based summary of the

supported hardware, operating system, Java Development Kit (JDK

), and

database drivers.

Quick Start Guide Explains how to get started with the Enterprise Server product.

Installation Guide Explains how to install the software and its components.

Administration Guide Explains how to congure, monitor, and manage Enterprise Server

subsystems and components from the command line by using the

asadmin(1M) utility. Instructions for performing these tasks from the

Administration Console are provided in the Administration Console online

help.

Application Deployment Guide Explains how to assemble and deploy applications to the Enterprise Server

and provides information about deployment descriptors.

Your First Cup: An Introduction

to the Java EE Platform

Provides a short tutorial for beginning Java EE programmers that explains

the entire process for developing a simple enterprise application. The sample

application is a web application that consists of a component that is based on

the Enterprise JavaBeans

specication, a JAX-RS web service, and a

JavaServer

Faces component for the web front end.

Application Development Guide Explains how to create and implement Java Platform, Enterprise Edition

(Java EE platform) applications that are intended to run on the Enterprise

Server. These applications follow the open Java standards model for Java EE

components and APIs. This guide provides information about developer

tools, security, and debugging.

Add-On Component

Development Guide

Explains how to use published interfaces of Enterprise Server to develop

add-on components for Enterprise Server. This document explains how to

perform only those tasks that ensure that the add-on component is suitable

for Enterprise Server.

Scripting Framework Guide Explains how to develop scripting applications in languages such as Ruby on

Rails and Groovy on Grails for deployment to Enterprise Server.

Troubleshooting Guide Describes common problems that you might encounter when using

Enterprise Server and how to solve them.

Reference Manual Provides reference information in man page format for Enterprise Server

administration commands, utility commands, and related concepts.

Java EE 6 Tutorial, Volume I Explains how to use Java EE 6 platform technologies and APIs to develop

Java EE applications.

Message Queue Release Notes Describes new features, compatibility issues, and existing bugs for Sun

GlassFish Message Queue.

Preface

The Java EE 6 Tutorial,Volume I • June 2009 (Beta)20

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