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Jasper is Tomcat's JSP Engine. Jasper parses JSP files to compile them into Java code as servlets (that can be handled by Catalina). At runtime, Jasper detects changes to JSP files and recompiles them. As of version 5, Tomcat uses Jasper 2, which is an implementation of the Sun Microsystems' JSP 2.0 specification.
A JavaServer Pages compiler is a program that parses JSPs and transforms them into executable Java Servlets. A program of this type is usually embedded into the application server and run automatically the first time a JSP is accessed, but pages may also be precompiled for better performance, or compiled as a part of the build process to test ...
Before servlet 3.0 specification (Tomcat 7.0), configuring the web.xml to map a servlet to a URL was the only option. For applications using the servlet 3.0 specification or later, the @WebServlet annotation can be used to map any servlet to one or more URL patterns. Servlets may be packaged in a WAR file as a web application. [7]
Apache TomEE (pronounced "Tommy") is the Enterprise Edition of Apache Tomcat (Tomcat + Java/Jakarta EE = TomEE) that combines several Java enterprise projects including Apache OpenEJB, Apache OpenWebBeans, Apache OpenJPA, Apache MyFaces and others. [3]
A few different distributions of Virgo exist: [3] Virgo Nano, Virgo Kernel, Virgo Server for Apache Tomcat (embedding the Apache Tomcat servlet container) and Virgo Jetty Server (embedding the Eclipse Jetty servlet container). Virgo Server for Apache Tomcat is the primary distribution for OSGi development.
A web container (also known as a servlet container; [1] and compare "webcontainer" [2]) is the component of a web server that interacts with Jakarta Servlets.A web container is responsible for managing the lifecycle of servlets, mapping a URL to a particular servlet and ensuring that the URL requester has the correct access-rights.
Resin Servlet Container (open source) Caucho Technology: 4.0.62 2019-05-23 6 Web Profile [5] 3.0 2.2 No Free, GPL: Resin Professional Application Server: 6 Web Profile 3.0 2.2 No Proprietary, commercial: Tomcat: ASF: 10.1.10 2023-06-23 9 partial platform 6.0 3.1 Yes Free, Apache v2 TomEE: ASF: 8.0.15 2023-05-08 8 Web Profile 4.0 2.3 Yes Free ...
Railo runs on the JVM as a servlet, and will work with any servlet container (e.g. Apache Tomcat, Eclipse Jetty) or application server (e.g. JBoss AS, GlassFish). It is possible to connect a web server (e.g. Apache, IIS, nginx, Cherokee) in front, using connectors such as mod jk, mod proxy, or equivalent, but this is not required by Railo.