Java Server Pages JSPs

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Java Server Pages (JSPs)

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

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Java Server Pages (JSPs)

• Scriptlets written in Java
• ? access to complete Java environment
• ? scalability
• ? portability

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Java Server Pages (JSPs)

• lthtmlgt
• lttitlegtDemo a simple JSP programlt/titlegt
• ltbodygt
• lt Hello world gt
• lt/bodygt
• lt/htmlgt

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Java Server Pages (JSPs)

• JSP implicit objects
• Among others (will visit later)
• out, a JspWriter object that writes into the
  output stream.

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Java Server Pages (JSPs)

• lthtmlgt
• lttitlegtDemo a simple JSP programlt/titlegt
• ltbodygt
• lt
• out.print( Hello world )
• gt
• lt/bodygt
• lt/htmlgt

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Java Server Pages (JSPs)

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

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Installing and running Tomcat

• Download jakarta-tomcat-6.0.14
• Just unzip the file, no installation needed
• Can unzip the file anywhere

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Installing and running Tomcat

• Find bin directory in jakarta-tomcat-6.0.14
  directory
• Edit the file startup.bat
• SET JAVA_HOME c\\jdk1.6
• // whatever your file path is for the java
• // version installed on your computer

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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

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Installing and running Tomcat

• Open your browser and go to
• http//localhost8080
• 8080 is the default port so make sure it is not
  taken by another program
• If it is, you can change tomcats default port by
  editing server.xml

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Installing and running Tomcat

• Your browser ends up in jakarta-tomcat-6.0.14/weba
  pps/ directory
• From there, call a jsp file with the appropriate
  file path