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Java Server Pages (JSPs)

Java Server Pages (JSPs). Like Perl and PHP, Server-side scripting Similar to PHP Static HTML/XML components Special JSP tags Snippets of code written in Java (called scriptlets). Java Server Pages (JSPs). Scriptlets written in Java  access to complete Java environment  scalability

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Java Server Pages (JSPs)

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  1. Java Server Pages (JSPs) • Like Perl and PHP, Server-side scripting • Similar to PHP • Static HTML/XML components • Special JSP tags • Snippets of code written in Java (called scriptlets)

  2. Java Server Pages (JSPs) • Scriptlets written in Java •  access to complete Java environment •  scalability •  portability

  3. Java Server Pages (JSPs) • <html> • <title>Demo a simple JSP program</title> • <body> • <%= “Hello world” %> • </body></html>

  4. Java Server Pages (JSPs) • JSP implicit objects • Among others (will visit later): • out, a JspWriter object that writes into the output stream.

  5. Java Server Pages (JSPs) • <html> • <title>Demo a simple JSP program</title> • <body> • <% • out.print( “Hello world” ); • %> • </body></html>

  6. Java Server Pages (JSPs) • Can run JSPs on your own computer, even without an Internet connection • Install tomcat (servlet/jsp engine)

  7. Installing and running Tomcat • Download jakarta-tomcat-7.0.37 • Just unzip the file, no installation needed • Can unzip the file anywhere

  8. Installing and running Tomcat • Find bin directory in jakarta-tomcat-7.0.37 directory • Edit the file startup.bat • SET JAVA_HOME = c:\…\jdk7 • // whatever your file path is for the java • // version installed on your computer

  9. Installing and running Tomcat • From command line inside bin directory, start tomcat: • startup • // that should open another window … • // tomcat is running, you can run JSPs

  10. Installing and running Tomcat • Open your browser and go to: • http://localhost:8080 • 8080 is the default port so make sure it is not taken by another program • If it is, you can change tomcat’s default port by editing server.xml

  11. Installing and running Tomcat • Your browser ends up in jakarta-tomcat-7.0.37/webapps/ directory • From there, call a jsp file with the appropriate file path

  12. Installing and running Tomcat • You should place your files in the webapps directory • To access heelo.jsp from a web browser: • http://leda.capitol-college.edu:8180/hfranceschi/hello.jsp

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