《Java Web开发速学宝典》是一本专为初学者和有一定基础的开发者设计的教程,旨在快速掌握Java Web开发技术。这本书通过丰富的实例代码帮助读者深入理解Java Web开发的核心概念和实践技巧。以下是该书各章节例子源码中涵盖的一些关键知识点: 1. **Servlet与JSP基础**:Servlet是Java Web应用中的核心组件,用于处理HTTP请求。JSP(Java Server Pages)则是一种动态网页技术,将HTML和Java代码结合在一起。这两个技术的结合使用,使得开发者可以方便地创建交互式的Web应用。 2. **MVC模式**:Model-View-Controller(MVC)是Java Web开发中的常用设计模式。通过分离业务逻辑、数据模型和用户界面,它提高了代码的可维护性和可扩展性。例如,Struts、Spring MVC等框架都是基于这个模式。 3. **JSTL和EL表达式**:JSTL(JavaServer Pages Standard Tag Library)是一组用于JSP页面的标签库,简化了页面的编写。EL(Expression Language)表达式则提供了简洁的方式,用于在JSP页面中访问和操作数据。 4. **过滤器和监听器**:过滤器(Filter)用于在请求到达目标资源之前进行预处理,如字符编码转换、安全过滤等。监听器(Listener)可以监听Web应用中的特定事件,如session的创建、销毁等,进行相应的处理。 5. **JDBC与数据库连接**:Java Database Connectivity (JDBC) 是Java与数据库交互的标准API,用于执行SQL语句、管理数据库连接等。书中可能包括如何使用PreparedStatement、ResultSet等类进行数据库操作。 6. **JavaBean规范**:JavaBean是符合特定规则的Java类,通常用于封装数据并提供公共方法。它们在Java Web应用中作为数据传输对象(DTO)或持久化对象(PO)使用。 7. **Apache Tomcat服务器**:Tomcat是常见的Java Web应用服务器,用于部署和运行Servlet和JSP应用。熟悉其配置和管理对于Java Web开发者至关重要。 8. **Maven项目管理**:Maven是一个项目管理和综合工具,用于构建、依赖管理和项目信息管理。学习如何用Maven管理Java Web项目,可以帮助开发者更高效地组织和构建代码。 9. **EJB(Enterprise JavaBeans)**:EJB是Java EE平台的一部分,用于构建分布式企业级应用。虽然现代开发中轻量级框架更受欢迎,但理解EJB的基本概念和工作原理仍有价值。 10. **Spring框架**:Spring是Java Web开发中最广泛使用的框架之一,它提供了IOC(控制反转)和AOP(面向切面编程)等特性,简化了应用的构建和测试。 11. **AJAX异步通信**:AJAX(Asynchronous JavaScript and XML)允许Web应用在不刷新整个页面的情况下更新部分内容,提升用户体验。 12. **JSON与XML数据交换**:这两种数据格式常用于前后端的数据交换。JSON因其简洁性和易读性,在现代Web开发中更为流行。 13. **RESTful API设计**:REST(Representational State Transfer)是一种网络应用程序的设计风格,用于构建易于理解和使用的Web服务。 通过学习《Java Web开发速学宝典》中的例子源码,开发者可以深入理解这些知识点,并通过实践来巩固和提高自己的技能。这些技术不仅适用于初学者,也对有经验的开发者在回顾基础和提升能力时有所帮助。
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