JSP 2.1 and JSF 1.2 Spec release preview version _jsp programming

Two important presentation layer technologies for Java EE JSP and JSF released a preview version of the new technology specification, the most important one being that they combined the expression language (Expression Language,el) part. In the near future, the two technologies are likely to be more integrated into one another and become a unified presentation layer technology. However, in the general view of the Java-EE community, JSP is not the best choice as a view technology alone, and template-based view techniques such as velocity and XSLT are generally more convenient than JSP, and component-based JSF faces a widespread trust crisis. Whether the combination of the two can be recognized by the industry, it will take time to test.

Here's the official announcement.

We are pleased to announce that the JavaServer pages, JSR-245 under the Faces.javaserver pages (JSP) 2.1 and JSR-252 developed under the JavaServer Faces (Faces) 1.2 of the new specification of the early Draft Review released.

JSP 2.1 Outputs Expression Language (EL) to its own separate document, which technically is a subdocument of the JSP specification. These unified El specifications define a higher-level Java package, Javax.el. This package is completely independent of the technology that uses it and allows the technology to insert itself into the El process. The changed JSP specification complies with the specification for standardized el.

For the JSR-252 mentioned earlier, this specification has no new features. Faces 1.2 supports the new standardized El and includes some specifications for bug fixes.

Faces and JSP in the JSRS under the alliance has brought some new features, but also for the future development of a solid foundation. For example, in a Web application that uses both faces and JSP, it is possible for a Web page to access managed beans using only jsps (without any faces content). The details of the changes are visible in Appendix E of the JSP specification and in the preface to the faces specification.

   JSP 2.1 EDR (JSR-245)
     http://jcp.org/aboutJava/communityprocess/edr/ jsr245/
   Faces 1.2 EDR (JSR-252)
     http://jcp.org/aboutJava/ communityprocess/edr/jsr252/