RedHat_Inc_Assignment

This assignment is an exam for Java developer internship in RedHat Inc.The concrete contents are as follows:

Create a maven project, The output of this project is a war which can be deployed to tomcat/jetty/jboss. The war/web app can respond “hello world “ with servlet for url “http://localhost:8080/test/hello”. It’s better you can add a test for this servlet. push it to github repo, Create a README to describe how to build and run your project in English.

So, firstly you need to prepare your development environment. My development environment is as follows:

• OS X 10.11.6
• Oracle JDK 1.8.0_65
• Apache Maven 3.3.9
• Apache Tomcat 8.0.32

Your JDK must be 1.5+ (due to the use of annotations) and Tomcat must be 7+.

To build and run this APP, clone it to your machine first:

git clone git@github.com:lioncruise/RedHat_Inc_Homework.git

Then use Maven to compile, test, package, install and deploy the APP.

mvn clean
mvn install

If it's the first time you use Maven, it will take a little long time. After successfully build the WAR of the App to the local Maven repository. Defaultly, You can cd ~/.m2 to see the WAR.

Finally, deploy the WAR. You need to fix your tomcat configuration file. Enter your tomcat installing root directory, add these to /conf/tomcat-users.xml.

<role rolename="manager-gui"/>  
<role rolename="manager-script"/>  
<user username="admin" password="admin" roles="manager-gui,manager-script"/>  

Then go back to the App's root directory to deploy. Make sure your tomcat is running!

mvn tomcat7:deploy

At this time, you can enter webapps/ derictory under your tomcat installing root directory, there is a test.war file and test/ directory.

visit http://localhost:8080/test/hello and then you'll get what you want.

mvn tomcat7:undeploy to undeploy the WAR, and mvn tomcat7:redeploy to redeploy the WAR.

To deploy the WAR to JBoss, just copy test.war to %jboss_home%/standalone/deployments/. Please be careful with the path configuration of JBoss.

For Jetty, it's also very simple to deploy, just add the WAR file to webapps directory under installing root directory.