Tomcat configuration
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Tomcat is an open-source Java Servlet container developed by the Apache Software Foundation that implements the Java Servlet and JavaServer Pages specifications from Sun Microsystems. It is written in Java, so it is platform independent. Tomcat requires setting the JAVA_HOME and CATALINA_HOME environment variables and extracting the source files to a directory before starting the server on port 8080 and accessing the welcome page. The server.xml file can be configured to serve files from a custom webapps directory.
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Tomcat configuration
- 1. Prepared by: Dima Gomaa
- 2. Tomcat is a Servlet container (Web server that interacts with Se rvle ts ) developed under the Jakarta Project of Apache Software Foundation Tomcat implements the Se rvle t and the Java Se rve r Pag e s (JSP) specifications of Sun Microsystems Tomcat is an open-source, non commercial project ◦ Licensed under the Apache Software License Tomcat is written in Java (OS independent)
- 3. Tomcat is a free open source implementation of java server pages and java servlets, developed as part of the Jakarta project under the Apache Software Foundation More info at: http://tomcat.apache.org/
- 5. To use Tomcat web server working need to know about: Environment variables How to start and stop the server How to configure Tomcat to pick up web files from your directory
- 6. Extract source zip file into a directory on hard disk. Default directory is jakarta-tomcat-ve rsio n#. A set of subdirectories are automatically created (bin, conf, doc etc) Tomcat uses two environment variables: environment variables: ◦ JAVA_HOME and CATALINA_HOME
- 7. Extract source zip file into a directory on hard disk. Default directory is jakarta-tomcat-ve rsio n#. A set of subdirectories are automatically created (bin, conf, doc etc) Tomcat uses two environment variables: environment variables: ◦ JAVA_HOME (point to directory containing JDK) ◦ CATALINA_HOME (point to directory containing Tomcat)
- 8. From UNIX shell prompt, go to where Tomcat is installed ◦ dgomaa_debian: cd /usr/local/jakarta-tomcat-1.6… Go to the subdirectory bin To START: ◦ ./startup.sh Tomcat server executes on TCP port 8080 (in case another server is using the default port 80)
- 9. To test Tomcat, in browser type URL: http://hostname:8080/ This will access the Tomcat documentation welcome page if server working properly To STOP Tomcat when it is running ◦ ./shutdown .sh
- 10. By default, Tomcat looks in its own WEBAPPS directory for web application files (e.g. jsps, html etc) To hold application files elsewhere, need to edit the se rve r. xm l configuration file (in the conf directory) to look in alternate location. Both <host> and <context> element need to be changed - NOTE: Always make a backup of server.xml before changing! In server.xml: change Host name parameter appbase from ‘webapps’ to the preferred directory you want <Host name="localhost"debug="0" appBase=“/home/dgomaa/tomcat-apps/webapps" reloadable = "true"
- 11. To set up an application directory: - To create a new web application (e.g. newapp) in your web application directory Tomcat directory : ◦ create a subdirectory of your WEBAPPs directory in which to hold the web application files ◦ This directory is now the top level directory for the web application newapp, accessed as http://www.domainname/newapp
- 12. An application's directory must contain the following: ◦ The directory WEB-INF/ ◦ A legal web.xml file under WEB-INF/ <web-app> </web-app>
- 14. Environment variable java_home incorrect Not putting 8080 in URL (http://localhost:8080) Not configuring server.xml to look at correct location of your web files Not starting the server… Not re-starting the server when you’ve added/ changed your files Not re-setting the environment variables when shell re-started