How
to deploy project in tomcat7 using maven.
It’s always
pain to get the project war and deploy it into tomcat webapp directory, and on top of that
stop tomcat and run it for each deployment. If you are doing this in eclipse no
need to laugh as in production you have to go through this manual process.
Now if MAVEN is taking care about
dependency why not this task also.
I have tried
to explain it with ATM analogy, if it doesn’t fit please spare me.
There are mainly
3 steps which you have to perform to do this.
Step1 :
Think in
this way, if you want to withdraw money from ATM, say SBI what do you require
- ATM Card
- PIN
Now suppose
you got both, you visited SBI ATM and error flashed, invalid PIN.
What could
be the reason?
- PIN might be wrong
- Someone already changed the PIN
- If both not than bank DB doesn’t have entry for your ATM.
Same will be
the case if you want to deploy project into tomcat using maven. Tomcat has to
allow you for deployment that means you should be authorized user.
To get
authorized user make below changes into %TOMCAT_HOME%/conf/tomcat-users.xml file.
<tomcat-users>
<role
rolename="admin"/>
<role rolename="dev"/>
<role rolename="manager"/>
<role rolename="manager-gui"/>
<role rolename="manager-script"/>
<role rolename="manager-jmx"/>
<role rolename="manager-status"/>
<user username="sushil" password="sushil"
roles="admin,dev,manager,manager-gui,manager-script,manager-jmx,manager-status"/>
<user username="raj" password="raj"
roles="dev"/>
<user username="avishek" password="avishek"
roles="dev"/>
</tomcat-users>
Now 'sushil' is
authorized to deploy into tomcat.
Step 2:
Maven has to
deploy it on behalf of you into tomcat so you have to delegate the control to
maven.
Take this analogy:
Your
access has been updated into bank DB. For you to have access, you should get ATM
Machine (MAVEN) to withdraw money, but to do that ATM require you to swipe ATM
Card and enter PIN means it want card number and PIN and also so the which BANK this ATM card is, for transaction.
Similarly
you have to tell MAVEN which user(ATM CARD) with credentials(PIN) and which server (BANK).
So
add below lines into %MAVEN_HOME%/conf/settings.xml
<servers>
<server>
<id>TomcatServer</id>
<username>sushil</username>
<password>sushil</password>
</server>
</servers>
Step3:
step1 and step2 done
you have ATM and PIN.
What to do
next go to ATM and withdraw money if you have in account. Give the details type of account, amount and do you want receipt
etc. that means do the actual things.
In any MAVEN
project actual is pom.xml so add the below things into MAVEN.
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.0</version>
<configuration>
<url>http://127.0.0.1:8080/manager/text</url>
<server>TomcatServer</server>
<path>/myProjects</path>
<update>true</update>
<!—if you want to redeploy-->
</configuration>
</plugin>
------------------------
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<plugins>
If you have
done all the above set steps properly, just go to project folder on command
prompt and type
mvn tomcat7:deploy.
WOLA… it’s
done, you can easily deploy projects using maven.
