什么是EJB
EJB(Enterprise JavaBeans)不是一种产品，而是一种技术规范，是描述构建应用组件的标准，解决了
可扩展性（Scalable）
分布式（Distributed）
事务处理（Transactional）
数据存储（Persistent）
安全性（Secure）
为什么选择EJB
开发人员用EJB开发时只需关注应用程序的业务逻辑实现，而无需关心底层的实现机制
支持事务处理
多个业务操作同时成功，或同时失败
可以通过在代码外的描述来定义事务处理级别
可扩展性
可以根据业务的增长而扩展
EJB服务器提供负载均衡和
安全性：由EJB服务器提供资源的访问和权限控制
EJB架构
来源：
分享到：
相关推荐
What Is EJB? ............................................................................................................................ 4 Core Features of the EJB Development Model ....................
详细的复习资料 Day1 What is EJB Day2 EJB的Web客户 Day3 JPA(Java Persistence API)简介 Day4 EntityManager接口 Day5 继承映射策略 Day6 事务 Day7 定时器和拦截器
【EJB 入门介绍】 Enterprise JavaBeans（EJB）是一种由Sun公司提出的服务器组件标准，主要用于构建分布式、面向对象的电子商务系统。EJB的核心优势在于其基于Java技术，易于编程，能实现跨平台的应用。EJB组件由...
Published in July 2006, the best selling book Mastering EJB is now in its fourth edition and has been updated for EJB 3.0. This edition features chapters on session beans and message-driven beans, EJB...
you will learn When to use a distributed architecture When and how to use EJB How to develop an efficient data access strategy How to design a clean and maintainable web interface How to design J2EE ...
Our aim is to provide you with all the knowledge you need to use Spring effectively in your own applications and to give you insight into what is happening behind the scenes in Spring. For example, ...
Master Spring basics and core topics, and share the authors’ insights and real–world experiences with remoting, Hibernate, and EJB. Beyond the basics, you’ll learn how to leverage the Spring ...
on the market covering specific topics like Java, J2EE, EJB, Design Patterns, ANT, CVS, Multi-Threading, Servlets, JSP, emerging technologies like AOP (Aspect Oriented Programming), Test Driven ...
* Explore and use the new EJB 3.1 and JPA 2.0 APIs from entities to session beans to message�driven beans, and more. * Discover the new web tier development APIs including JSPs, JSTL, and ...
Introduction to Apache Shiro What is Apache Shiro? Apache Shiro 是一个强大而灵活的开源安全框架，它干净利落地处理身份认证，授权，企业会话管理和加密。 Apache Shiro 的首要目标是易于使用和理解。安全有时候...
understanding of what the available options are for your applications, and how their performance will be affected. Learn about thread pool tuning, EJB tuning, and JMS tuning, which are crucial parts...
out.writeUTF("hello ,what time is it?"); DataInputStream in = new DataInputStream(t.getInputStream()); String s = in.readUTF(); System.out.println(s); ``` 服务器端则使用`ServerSocket`监听特定端口，...
By placing the business logic in a separate package or EJB, we allow flexibility and reuse. Another way of thinking about Action class is as the Adapter design pattern. The purpose of the Action is ...
What You Will Learn Set up Eclipse, Tomcat, and Glassfish server for JEE application development Use JSP, Servlet, JSF, and EJBs to create a user interface and write business logic Create JEE database...
Chapter 1 - What Is WebSphere? Chapter 2 - Installing and Starting WebSphere Chapter 3 - Hello World (Wide Web) Chapter 4 - Hello Servlets and JSPs Chapter 5 - Hello EJBs Part II - ...
191、What is session management, and how is it different from session tracking? 45 192、Can I use Hidden form field to track session? 45 194、In a architecture pattern like MVC, it is mandatory that ...
2. **Java GUI Builder**：也称为WYSIWYG（What You See Is What You Get）编辑器，允许开发者创建Swing或JavaFX应用程序的用户界面，无需手动编写大量的UI代码。 3. **EJB（Enterprise JavaBeans）向导**：简化了...
What you’ll learn * How to use the IoC container and the Spring application context to best effect. * Spring’s AOP support, both classic and new Spring AOP, integrating Spring with AspectJ, and ...
- **Mock Objects Overview**: Explanation of what mock objects are and why they are useful. - **XDoclet for Mock Objects**: Techniques for generating mock objects and integrating them into tests. - **...