JRun programming environment
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JRun programming environment
JRun lets you develop dynamic J2EE applications that include servlets, JSPs, and EJBs.
Your applications can be hosted by a third-party web server, such as IIS or Apache, or by
the integrated JRun Web Server (JWS).
The following figure shows a system using JRun to develop and deploy applications:
This figure shows the four main components of a JRun system:
•
JRun server
Provides the necessary services and web services to process J2EE
applications containing servlets, JSPs, and EJBs. You can create multiple JRun servers
on a single system. As part of installing and configuring JRun, you can configure a
connector for your web server to communicate with the JRun Connection Module
within the server. For more information on web server connectors, see JRun
Administrator’s Guide.
•
Web server
Receives a client request and delivers a response containing web
content. This content can be static web pages, or dynamically generated by a Java
Servlet or a JSP processed by JRun. You can connect one or more web servers to a
single JRun server, and vice versa. The previous figure shows example web servers that
you can use with JRun. For a complete list of supported web servers, see Installing
JRun.
JRun also provides its own built-in web server, the JWS. The JWS is a full-featured,
fast, and lightweight all-Java web server that you can use to develop, test, and deploy
web applications without loading or configuring a third-party web server.
•
Enterprise application
Comprises web applications and EJBs.
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Web application
The Java Servlet specification defines a web application as
being composed of servlets, JSPs, static content such as HTML pages, images,
and any other application resources. A JRun server can support multiple web
applications mapped to different URLs. For example, JRun installs a samples
JRun server that hosts several sample applications.
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