Our application layer needs to be able to find its database layer and we don’t want to have to hard-code hostname/port information in our configuration files.Because we are a Java developer, we want to be able to pull our source files straight from GitHub as opposed to making a source tarball and pushing it to a staging URL where it can be pulled from.We have a couple of requirements we want to meet as part of its design: Lets take a look at the plan.sh file that we’ll be using to package up our national-parks application. Having the application bundled with the automation needed to run the applications offers the ability to export that package into a variety of different runtime environments or be able to execute them natively.Infrastructure details like identifying the hostname/ip address of the web and database tiers, which environment (QA, UAT, Production) the app is running in are not primary concerns.They don’t want to be encumbered by having to figure out the deployment details that extend beyond their own developer’s workstation. Application developers want to focus on writing applications and delivering business value in an efficient, streamlined manor.The automation travels with the application.Plan Files ConsiderationsĬhoosing Habitat to deploy Java web applications has some great benefits worth considering: A jQuery front end handles the map rendering and calls to the RESTful backend.Īs with most Java application, Maven is used to compile the source files into a WAR file suitable for deployment into Apache Tomcat or various other application containers.įinally, the sample application is available on GitHub at. The application utilizes a MongoDB backend that contains the information about the National Parks. Users can browse the map, zoom in, and click on any park to get information about the park. Adapt the configuration values if necessary.Our example application is a simple JavaEE Web application that renders a map of all the National Parks in the United States via a map.project (next to the server.xml file) with the following contents: Create a file tomee.xml in the Servers/TomEE.If you need a different configuration, do the following: Mail resources can either be configured in the web applications context (which is difficult when used within Eclipse) or in a special TomEE configuration file. Look for the element /Server/Service/Engine/Realm.If you want to connect to our testing LDAP, make the following modifications to Servers/TomEE. Tomcat uses a local user database by default (in Servers/TomEE. Add an external web module and select /git///src/main/tomee as the document base and /tomee as the path.Open the Server configuration (double-click on the server in the Servers view) and go to the Modules tab.In order to use EJBs, a special web application has to be deployed: Add the following linee (adjust the path): Double click on the entry in the Servers view and Open launch configuration.Unfortunately this doesn't work when started from Eclipse, there the server repository is set via a system property in this case: In production this is supplied by a context.xml file in the TomEE/Tomcat configuration directory. The only necessary context parameter is the location of the server repository. Add the following two lines (adjust the path in the first line): logging.properties and add the line below: Copy /conf/logging.properties into Servers/TomEE.Tomcat comes with a default logging configuration, but produces quite unreadable output. Select the server runtime environment created above.Assign an appropriate server name, e.g.Select "Tomcat v8.5 Server" as server type.Create a new Server via the context menu.Open the Java EE perspective and go to the Servers view.Browse and select the extracted TomEE installation directory.Name the environment to "Apache TomEE 7.0".Go to Preferences ⇒ Server ⇒ Runtime Environments and Add.
#Apache tomcat 8 book plus#
Get TomEE Plus (!) 7.0.3 from and extract it somewhere on your machine.