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高等学校计算机科学与技术教材:Java EE编程技术(第2版)

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高等学校计算机科学与技术教材:Java EE编程技术(第2版)

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·原理与技术的完美结合
·教学与科研的最新成果
·语言精练,实例丰富
·可操作性强,实用性突出
Content Description

《高等学校计算机科学与技术教材:Java EE编程技术(第2版)》对JavaEE6编程技术进行了系统介绍。首先对Java EE体系结构进行概述,介绍Java EE的定义、设计思想、技术框架等,然后详细指导读者如何基于Net Beans+My SQL来搭建Java EE开发环境,随后以Java EE企业应用的表现层、业务逻辑层和数据持久化层的编程任务为主线,由浅入深地讲解各个应用层次开发相关的组件技术、服务技术、通信技术和架构技术等,重点对JavaEE6规范最新功能特性包括Servlet3.0、JSF2.0、EJB3.1和JPA2.0等的讲解演示。
《高等学校计算机科学与技术教材:Java EE编程技术(第2版)》在第1版的基础上对原有内容进行了调整,增加了JavaEE6规范中JSF、JPA、CDI和Bean Validation等关键内容,同时对Servlet和EJB等部分内容进行了较大补充。
《高等学校计算机科学与技术教材:Java EE编程技术(第2版)》适合作为高等学校计算机专业教材,也可作为相关人员的参考书。《高等学校计算机科学与技术教材:Java EE编程技术(第2版)》每一章都是一个完整独立的部分,因此教师在授课时可根据授课重点、课时数量进行灵活调整。
Catalogue

第1章 Java EE概述
1.1 Java EE产生的背景
1.1.1 企业级应用程序特点
1.1.2 企业级应用程序体系结构
1.2 什么是Java EE
1.3 Java EE编程思想:组件-容器
1.4 Java EE技术框架
1.4.1 组件技术
1.4.2 服务技术
1.4.3 通信技术
1.4.4 架构技术
1.5 Java EE体系架构的优点
小结
习题1

第2章 搭建开发环境
2.1 概述
2.2 安装JDK
2.3 安装Net Beans IDE
2.4 开发环境测试
小结
习题2

第3章 Servlet
3.1 Servlet基础
3.1.1 Servlet定义
3.1.2 Servlet工作流程
3.1.3 Servlet编程接口
3.2 第一个Servlet
3.3 处理请求
3.3.1 请求参数
3.3.2 Header
3.3.3 上传文件
3.3.4 异步处理
3.4 生成响应
3.4.1 编码类型
3.4.2 流操作
3.4.3 重定向
3.5 Servlet配置
3.5.1 初始化参数
3.5.2 URL模式
3.5.3 默认Servlet
3.6 会话管理
3.6.1 Cookie
3.6.2 URL重写
3.6.3 Http Session
3.7 Servlet上下文
3.8 Servlet间协作
3.9 Filter
3.10 Listener
小结
习题3

第4章 JSP
4.1 概述
4.2 第一个JSP
4.3 脚本
4.3.1 输出表达式
4.3.2 注释
4.3.3 声明变量、方法和类
4.4 指令
4.4.1 page指令
4.4.2 include指令
4.5 动作组件
4.6 内置对象
4.6.1 request对象
4.6.2 response对象
4.6.3 session对象
4.6.4 application对象
4.6.5 0ut对象
4.6.6 exception对象
4.6.7 内置对象的作用范围
4.7 表达式语言
4.7.1 基本语法
……
第5章 JavaBean
第6章 JSF
第7章 JDBC
第8童JPA
第9章 EJB
第10章 Web服务
第11章 综合练习
Book Abstract

Java EE为满足开发多层体系结构的企业级应用的需求,提出“组件一容器”的编程思想。Java EE应用的基本软件单元是Java EFJ组件。所有的Java EE组件都运行在特定的运行环境之中。组件的运行环境被称为容器。Java EE组件分为Web组件和EJB组件,相应地,Java EE容器也分为Web容器和EJB容器。
容器为组件提供必需的底层基础功能,容器提供的底层基础功能被称为服务。组件通过调用容器提供的标准服务来与外界交互。为满足企业级应用灵活部署,组件与容器之间必须既松散耦合,又能够强有力地交互。为实现这一点,组件与容器都要遵循一个标准规范。这个标准规范就是Java EE。
Java EE容器由专门的厂商来实现,容器必须实现的基本接口和功能由Java EE规范定义,但具体如何实现完全由容器厂商自己决定。常见的Java EE服务器中都包含了Web容器或EJB容器的实现。组件一般由程序员根据特定的业务需求编程实现。
所有的Java EE组件都是在容器的Java 虚拟机中进行初始化的,组件通过调用容器提供的标准服务来与外界交互。容器提供的标准服务有命名服务、数据库连接、持久化、Java 消息服务、事务支持、安全服务等。因此在分布式组件的开发过程中,完全可以不用考虑复杂多变的分布式计算环境,而专注于业务逻辑的实现,这样可大大提高了组件开发的效率,降低开发企业级应用程序的难度。
那么组件与容器之间是如何实现交互的呢?即容器如何知道要为组件提供何种服务,组件又是如何来获取容器提供的服务呢?Java EE采用部署描述文件来解决这一难题。每个发布到服务器上的应用除了要包含自身实现的代码文件外,还要包括一个XML文件,该文件被称为部署描述文件。部署描述文件中详细地描述了应用中的组件所要调用的容器服务的名称、参数,等等。部署描述文件就像组件与容器间达成的一个“契约”,容器根据部署描述文件的内容为组件提供服务,组件根据部署文件中的内容来调用容器提供的服务。
从上面的介绍中可以感觉,部署描述文件的配置是Java EE开发中的一项重要而又烦琐的工作。值得庆幸的是,自Java EE5规范推出以来,Java EE支持在组件的实现代码中引1入注解来取代配置复杂的部署描述文件。所谓的注解是JDK5版本后支持的一种功能机制,它支持在Java 组件的源代码中嵌入元数据信息,在部署或运行时应用服务器将根据这些元数据对组件进行相应的部署配置,关于注解,后面的章节中还会详细论述。容器在组件部署时通过提取注解信息来决定如何为组件提供服务。注解的出现大大简化了Java EE应用程序的开发和部署,是Java EE规范的一项重大进步。
更值得一提的是,在最新的Java EE6规范中,还引入了一种“惯例优于配置”或者称为“仅异常才配置”的思想。通俗一点讲,就是对于Java EE组件的一些属性和行为,容器将按照一些约定俗成的惯例来自动进行配置,此时开发人员甚至连注解都可以省略。只有当组件的属性和行为不同于惯例时,才需要进行配置。这种编程方式大大减少了程序人员的工作量,也是需要开发人员逐渐熟悉和适应的一种编程技巧。
……

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