Tag: Ant

Categories
Java

Remote Debugging

I need to directly debug on the application Tomcat server, not only on my local Tomcat instance.

Compile Java code

For debugging we need to keep the line numbers while compiling.
To build the war file we use an ANT script and we have to add the debug and debuglevel attributes in the javac tag:


  [...]

Configure Tomcat server

To enable remote debugging on the Tomcat server add some arguments to CATALINA_OPTS in setenv.sh file:

ATALINA_HOME=/app/myApp/tomcat
CATALINA_BASE=/app/myApp/tomcat
CATALINA_PID=/app/myApp/tomcat/tomcat.pid
JAVA_HOME=/app/java/jdk8u265-b01-jre
CATALINA_OPTS="$CATALINA_OPTS -Djava.library.path=/app/library -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n"
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/app/library
export LD_LIBRARY_PATH
JAVA_OPTS="${JAVA_OPTS} -Djavax.net.ssl.trustStore=/app/certs/corporate_truststore.jks -Djavax.net.ssl.trustStorePassword=secret -Xms256M -Xmx1024M -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/app/myApp/dump"

Configure Eclipse

Create a new debug configuration:


Categories
Java

Deploy to Tomcat

Deploy myApp.war file to Tomcat application server, using Tomcat manager app and an ant script.

Make a folder "ant" in your project and this it the folder for all other actions below.

Make a folder "dist" and generate your myApp.war file into this folder with the "build.xml" script.

Make a folder "tomcat-libs" and copy following files from your tomcat installation:

  • catalina-ant.jar
  • catalina.jar
  • servlet-api.jar
  • jsp-api.jar

Create file "tomcat.properties" with properties for tomcat server and tomcat manager app.

Create "deploy.xml" file for deployment.

Execute deploy.xml script with ant, it must show the info sections with properties of your tomcat.properties file.

Execute deploy-webapp target from deploy.xml script to deploy your myApp.war file to tomcat server through the tomcat manager app.

If you are using for example Jenkins, you can set the "secprops.location" from outside the script, so you can use the same script for different tomcat installations.





  
    myApp ant deploy file.
  

  
  

  

  
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
  

  
    
      
      
    
  

  
  
  
  
  

  
    
  

  
    
  

  
    
  

  
    
  

  
    
    
    
  


tomcat.manager.url=http://myAppServer:7011/manager/text
tomcat.username=tomcat
tomcat.password=tomcat
webapp.name=myApp



  
    myApp ant build file.