Tomcat Web Server

From Kb

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Contents 1 See Also 2 First steps 3 Command Line - stop and start Tomcat (on Windows) 4 Deploying to Tomcat Manually 5 Deploying to Tomcat with Maven 6 Deploying to Tomcat with Cargo 7 Using Maven and Jetty 8 Out of Memory / Out of Heap Errors 9 Debugging Web Applications on Tomcat and Eclipse 10 Running Tomcat Through Eclipse

See Also

• Deploying to Weblogic using Maven
• JBoss Information
• Oracle Application Server (OAS)
• Tomcat Web Server
• Websphere
• Weblogic

First steps

• Install Java

• Install Tomcat
  • Use default port 8080 and default username / password (admin / blank)
  • If these change , search for the relevant entries in the pom.xml and change to match

Command Line - stop and start Tomcat (on Windows)

• net stop "apache tomcat"
• net start "apache tomcat"

Deploying to Tomcat Manually

1. Build war using mvn package
2. Ensure Tomcat is running
3. Go to http://localhost:8080
4. Open the Manager application (normally at http://localhost:8080/manager)
5. Use the web interface to deploy

Deploying to Tomcat with Maven

• Ensure Tomcat is running
• Follow the instructions at : http://mojo.codehaus.org/tomcat-maven-plugin/deployment.html more information on the goals are here: http://mojo.codehaus.org/tomcat-maven-plugin/context-goals.html
  • Example: mvn war:exploded tomcat:exploded
  • Example: mvn tomcat:run - start tomcat container inline

Most commonly used

• mvn war:exploded tomcat:deploy - 1st time
• mvn war:exploded tomcat:redeploy - subsequent times

All of these are from the web directory of the project

Deploying to Tomcat with Cargo

Add information

Using Maven and Jetty

• No Tomcat running
• mvn jetty:run-war in the web section of your project

Out of Memory / Out of Heap Errors

Add the following variable: MAVEN_OPTS=-Xms256m -Xmx1024m -XX:PermSize=1024m -XX:MaxPermSize=1024m

Debugging Web Applications on Tomcat and Eclipse

• Information from Tomcat Wiki , but if you have Tomcat installed as a windows service ...

• In the Tomcat Manger (right click green play icon in windows system tray)
  • Open the Java Tab
  • In the Java options textbox
  • On separate lines , enter -Xdebug and -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n before the -D options.
  • Restart windows service

• To Attach to process in Eclipse
  • Run ... Open Debug Dialog ... Remote Java application .. New Configuration
  • Localhost (or other) and the port number (8000) specified earlier

• Add breakpoints in code, Eclipse Monitors code and switches to debug view when breakpoint encountered.

Running Tomcat Through Eclipse

• Ensure you have the Web Tools Project installed
• New configuration, add details of the local server
• Run as Debug server , using pre build war file...

• Add breakpoints in code, Eclipse Monitors code and switches to debug view when breakpoint encountered.