J2EE traditionally referred to products and standards released by Sun. For example if you were developing a standard J2EE web application, you would be using EJBs, Java Server Faces, and running in an application server that supports the J2EE standard. However since there is such a huge open source plethora of libraries and products that do the same jobs as well as (and many will argue better) then these Sun offerings, the day to day meaning of J2EE has migrated into referring to these as well (For instance a Spring/Tomcat/Hibernate solution) in many minds.

在我看来，这是一本讨论J2EE“开源”方法的好书 http://www.theserverside.com/tt/articles/article.tss?l=J2EEWithoutEJB_BookReview

我想说J2EE经验=对一些J2EE技术有深入的经验，对大多数J2EE技术有一般的知识，对企业软件有一般的经验。

它的意义一直在变化。它过去指的是servlet、JSP和ejb。 现在它可能意味着Spring和Hibernate等。

他们真正需要的是对Java生态系统、Servlet容器、JMS、JMX、Hibernate等的经验和理解，以及如何将它们组合在一起。

测试和源代码控制也是一项重要的技能。

是的，有EJB、Web应用程序(servlet和JSP)、事务、Web服务、管理和应用服务器的经验。

它还意味着使用“企业级”应用程序的经验，而不是桌面应用程序。

在许多情况下，企业应用程序需要连接到许多遗留系统，它们不仅仅是“web页面”，通过java“版本”上可用的特性，这种连接可以解决。

J2EE traditionally referred to products and standards released by Sun. For example if you were developing a standard J2EE web application, you would be using EJBs, Java Server Faces, and running in an application server that supports the J2EE standard. However since there is such a huge open source plethora of libraries and products that do the same jobs as well as (and many will argue better) then these Sun offerings, the day to day meaning of J2EE has migrated into referring to these as well (For instance a Spring/Tomcat/Hibernate solution) in many minds.

在我看来，这是一本讨论J2EE“开源”方法的好书 http://www.theserverside.com/tt/articles/article.tss?l=J2EEWithoutEJB_BookReview

似乎Oracle现在正试图摆脱jsp(用Faces代替)，并模仿Spring的REST (JAX-RS)和DI。

裁判:https://docs.oracle.com/javaee/7/firstcup/java-ee001.htm

表2-1 web层Java EE技术

JavaServer Faces技术

web应用程序的用户界面组件框架，允许您在XHTML页面上包含UI组件(如字段和按钮)，称为Facelets页面;转换和验证UI组件数据;将UI组件数据保存到服务器端数据存储;维护组件状态

表达式语言

Facelets页面中用于引用Java EE组件的一组标准标记

servlet

动态处理请求和构造响应的Java编程语言类，通常用于HTML页面

Java EE的上下文和依赖注入

一组上下文服务，使开发人员可以轻松地在web应用程序中使用企业bean和JavaServer Faces技术