In an attempt to limit the footprint of web containers, both in physical and in conceptual terms, the web profile was created, a subset of the Java EE specifications. The Java EE web profile comprises the following:
| Specification | Java EE 6[6] | Java EE 7[3] |
|---|---|---|
| Servlet | 3.0 | 3.1 |
| JavaServer Pages (JSP) | 2.2 | 2.3 |
| Unified Expression Language (EL) | 2.2 | 3.0 |
| Debugging Support for Other Languages (JSR-45) | 1.0 | 1.0 |
| JavaServer Pages Standard Tag Library (JSTL) | 1.2 | 1.2 |
| JavaServer Faces (JSF) | 2.0 | 2.2 |
| Java API for RESTful Web Services (JAX-RS) | 1.1 | 2.0 |
| Java API for WebSocket (WebSocket) | n/a | 1.0 |
| Java API for JSON Processing (JSON-P) | n/a | 1.0 |
| Common Annotations for the Java Platform (JSR-250) | 1.1 | 1.2 |
| Enterprise JavaBeans (EJB) | 3.1 Lite | 3.2 Lite |
| Java Transaction API (JTA) | 1.1 | 1.2 |
| Java Persistence API (JPA) | 2.0 | 2.1 |
| Bean Validation | 1.0 | 1.1 |
| Managed Beans | 1.0 | 1.0 |
| Interceptors | 1.1 | 1.2 |
| Contexts and Dependency Injection for the Java EE Platform | 1.0 | 1.1 |
| Dependency Injection for Java | 1.0 | 1.0 |
原文：http://www.cnblogs.com/xzs603/p/6437348.html