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Web development with Java Server Pages (JSP) and Servlets. Julien Thibault / Phil Brewster / Kristina Doing-Harris Julien.thibault@utah.edu. Web development. Web development includes

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Web development with java server pages jsp and servlets

Web developmentwith Java Server Pages (JSP) and Servlets

Julien Thibault / Phil Brewster / Kristina Doing-Harris

Julien.thibault@utah.edu


Web development
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 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
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 page
Use CHPC to host your JSP page

Connecting to CHPC

  • Host: sanddunearch.chpc.utah.edu

  • Login: uNID

  • Password: uNID password

    Hosting your JSP pages

    1. Create a public_jsp folder in your home directory

    2. 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.