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Web developmentwith Java Server Pages (JSP) and Servlets
Julien Thibault / Phil Brewster / Kristina [email protected]
Web development
Web development includes web design, web content development, client liaison, client-side/server-side
scripting, web server and network security configuration, e-commerce…
Limitations of “static” HTML HTML only structures data (text, pictures, media) for rendering in the browser The hosting web server just send the HTML file as is to the user Does not natively offers ways to interface with data sources (e.g. Databases)
Dynamic web through server-side code A web server dynamically generates a web page based on the user request The user’s request is processed on the server-side, and HTML is generated
accordingly to represent the response, then finally sent back to the user.
Many technologies and languages available Microsoft .NET, Java Server Pages CGI, PHP, ColdFusion
Java Server Pages and Servlets Java Servlets
Java Classes used to process HTTP requests Hosted by the web server (typically Apache Tomcat) Good technology choice if you want to reuse existing Java
libraries
Java Server Pages (JSP) Java technology used to embed server-side code directly into
the web page When the JSP pages are deployed, the server compiles them and
creates the corresponding Servlets. JSP example:
Server-side code is surrounded by the <% and %> tags
<html> <head>Hello world test</head> <body> Hello World! <%= new java.util.Date() %> </body></html>
Using JSP in Eclipse JEE
Open Eclipse JEE and create a new Dynamic Web Project (e.g. helloproject)
The project should include the following folders: Java Resources/src/: where you put your Java classes (including servlets) WebContent/: where you put your web pages (html/jsp), and other web content
(pictures, CSS) WebContent/WEB-INF/lib: where you put your Java libraries (jar files)
To create a new JSP page: Right-click on WebContent/ -> New -> JSP file (e.g. create hello.jsp from previous
slide)
To create a new Servlet Right-click on JavaResources/src/ folder -> New -> Servlet
To deploy your web application Right-click on the project folder -> Export -> WAR file Destination: the webapps/ folder of your Apache Tomcat install (e.g. C:\Program
Files\Apache Software Foundation\Tomcat 5.5\webapps\) The project will be packaged into a WAR file (Web application ARchive) and
deployed onto the server Now you should be able to access you web app at
http://localhost:8080/helloproject/hello.jsp
Use CHPC to host your JSP pageConnecting to CHPC
Host: sanddunearch.chpc.utah.edu Login: uNID Password: uNID password
Hosting your JSP pages1. Create a public_jsp folder in your home directory2. Copy your web page to that folder (scp command or
WinSCP)3. Now you can access your webpage at:
http://webapps.chpc.utah.edu/~[uNID]/[page_name]Ex: http://webapps.chpc.utah.edu/~u0668260/index.jsp
Note: if you just copy the WAR file to that folder, it might take a few minutes to actually deploy.
JSP tutorials
