How to start and stop an Tomcat container with Java?

Question

I have a Maven project that starts a tomcat container for pre-integration-tests (jUnit Tests). Most of my tests require that the web-application under tests is restarted. So

Answer 1

So, is it possible to start and stop the container with a java statement?

Your use case looks extremely weird (having to restart the container between tests) but let's not discuss this. To answer your question, yes it is possible and this can be done using Cargo's Java API.

To start a Tomcat container and deploy your war, you can do something like this in the setUp() method:

// (1) Optional step to install the container from a URL pointing to its distribution
Installer installer = new ZipURLInstaller(new URL("http://www.apache.org/dist/tomcat/tomcat-6/v6.0.20/bin/apache-tomcat-6.0.20.zip"));
installer.install();

// (2) Create the Cargo Container instance wrapping our physical container
LocalConfiguration configuration = (LocalConfiguration) new DefaultConfigurationFactory()
        .createConfiguration("tomcat6x"), ContainerType.INSTALLED, ConfigurationType.STANDALONE);
container = (InstalledLocalContainer) new DefaultContainerFactory()
        .createContainer("tomcat6x", ContainerType.INSTALLED, configuration);
container.setHome(installer.getHome());

// (3) Statically deploy some WAR (optional)
WAR deployable = new WAR("./webapp-testing-webapp/target/webapp-testing-webapp-1.0.war");
deployable.setContext("ROOT");
configuration.addDeployable(deployable);

// (4) Start the container
container.start();

And stop it in the tearDown() method.

// (6) Stop the container
container.stop();

Answer 2

bootstrap.jar and commons-logging-api-1.1.1 from tomcat\bin to your classpath and the following snippet may help,

Bootstrap bootstrap=new Bootstrap();
bootstrap.setCatalinaHome("D:/apache-tomcat-5.5.28");

bootstrap.start();

Thread.sleep(60000);

bootstrap.stop();

Answer 3

I'm using follow method:

private static final String TOMCAT = "D:/test_tomcat";
@BeforeClass
public static void runTomcat() {
    bootstrap = new Bootstrap();
    bootstrap.setCatalinaHome(TOMCAT);
    try {
        bootstrap.start();          
    } catch (Exception e) {
        e.printStackTrace();
        fail("Не удалось запустить Tomcat");
    }
}

@AfterClass
public static void stopTomcat() {
    try {
        bootstrap.stop();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

But is method have a one problem - I need copy WAR file in 'webapps' directory every time have change source code. I thing what copy my class from classpath in web-inf and copy 'jar' from classpath in web-inf/lib.

Answer 4

Yes it is. But I am afriad, how much time will your tests take. You must fix your tests to not depend on server startup and shutdown. Its fine to run tests inside container, but container should be started once before tests.

Well to answer your question, you can execute the relevant .sh or .bat files from Java using system calls. Something like below,

Runtime r = Runtime.getRuntime();
Process p = r.exec("start.sh");
p.waitFor();