Question

In Eclipse I am getting 5 warnings for my build.xml:

taskdef class.org.apache.catalina.ant.InstallTask cannot be found
taskdef class.org.apache.catalina.ant.ListTaskcannot be found
taskdef class.org.apache.catalina.ant.ReloadTaskcannot be found
taskdef class.org.apache.catalina.ant.StartTask cannot be found
taskdef class.org.apache.catalina.ant.StopTask cannot be found

I’ve set up the following system environment variables (Windows 7)

ANT_HOME: C:\apache-ant-1.8.4
CATALINA_HOME: C:\apache-tomcat-7.0.29
JAVA_HOME: C:\Program Files\Java\jdk1.6.0_34
and have added %ANT_HOME%/bin to PATH

edit: I’ve also added catalina-ant.jar into C:\apache-ant-1.8.4\lib

More parts of the code:

<!-- We need the Catalina jars for Tomcat -->
<!--  * for other app servers - check the docs -->
<fileset dir="${appserver.lib}">
    <include name="catalina-ant.jar"/>
</fileset>
</path>

<taskdef name="install" classname="org.apache.catalina.ant.InstallTask">
    <classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="reload" classname="org.apache.catalina.ant.ReloadTask">
    <classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="list" classname="org.apache.catalina.ant.ListTask">
    <classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="start" classname="org.apache.catalina.ant.StartTask">
    <classpath refid="catalina-ant-classpath"/>
</taskdef>
<taskdef name="stop" classname="org.apache.catalina.ant.StopTask">
    <classpath refid="catalina-ant-classpath"/>
</taskdef>

What’s wrong?

Answer 1

I think only mentioning the CATALINA_HOME does not work. You need to put the catalina-ant jars to the Ant’s class path. In tomcat 7, there 4 jars for this purpose while there was only single jar for this in earlier versions. Please follow this link.

As quoted from the link,

To start with, make sure Tomcat manager is configured for use by
Catalina-Ant. Make sure that manager-script is included in the roles
for one of the users in TOMCAT_HOME/conf/tomcat-users.xml. For
example:

<tomcat-users>
    <user name="admin" password="s3cr£t" roles="manager-gui,manager-script"/>
</tomcat-users>

Catalina-Ant for Tomcat 6 was encapsulated within a single JAR file.
Catalina-Ant for Tomcat 7 requires four JAR files. One from
TOMCAT_HOME/bin:

tomcat-juli.jar

and three from TOMCAT_HOME/lib:

catalina-ant.jar
tomcat-coyote.jar
tomcat-util.jar

There are at least three ways of making the JARs available to Ant:

• Copy the JARs into the ANT_HOME/lib folder. Then Ant will just find them.
• Copy the JARs to a folder within your project that you check into your source control system. Ant then needs a path id to find them:

<path id="catalina-ant-classpath">
   <fileset dir="${catalina-ant-dir}">
      <include name="catalina-ant.jar"/>
      <include name="tomcat-coyote.jar"/>
      <include name="tomcat-util.jar"/>
      <include name="tomcat-juli.jar"/>
   </fileset>
</path>

Where catalina-ant-dir is the directory with the JARs in. This way you
don’t need to modify the Ant installation on every machine you build
on. Access the JARs directly from your Tomcat 7 installation. Ant then
needs a path id to find them:

<path id="catalina-ant-classpath">
    <fileset dir="${appserver.lib}">
           <include name="catalina-ant.jar"/>
           <include name="tomcat-coyote.jar"/>
           <include name="tomcat-util.jar"/>
        </fileset>
    <fileset dir="${appserver.home}/bin">
               <include name="tomcat-juli.jar"/>
    </fileset>
</path>

Where appserver.lib is the path to Tomcat 7’s lib directory and
appserver.home is the path to Tomcat’s top level installed directory.
This way Tomcat 7 is required on every box you build on.

My personal preference is for 2 above.

Now that your Ant script can see the Catalina-Ant JARs you need to
tell it what tasks are available. These are most if not all of the
tasks that are available to Ant.

<taskdef name="catalina-deploy" classname="org.apache.catalina.ant.DeployTask" classpathref="catalina-ant-classpath"/>
<taskdef name="catalina-list" classname="org.apache.catalina.ant.ListTask" classpathref="catalina-ant-classpath"/>
<taskdef name="catalina-reload" classname="org.apache.catalina.ant.ReloadTask" classpathref="catalina-ant-classpath"/>
<taskdef name="catalina-findleaks" classname="org.apache.catalina.ant.FindLeaksTask" classpathref="catalina-ant-classpath"/>
<taskdef name="catalina-resources" classname="org.apache.catalina.ant.ResourcesTask" classpathref="catalina-ant-classpath"/>
<taskdef name="catalina-start" classname="org.apache.catalina.ant.StartTask" classpathref="catalina-ant-classpath"/>
<taskdef name="catalina-stop" classname="org.apache.catalina.ant.StopTask" classpathref="catalina-ant-classpath"/>
<taskdef name="catalina-undeploy" classname="org.apache.catalina.ant.UndeployTask" classpathref="catalina-ant-classpath"/>

Finally you need a set of tasks that actually do the work. Although, as you can see above, there are a few tasks I only tend to use the following ones:

<target name = "stop-webapp">
       <catalina-stop url="${tomcat.manager.url}"
                         username="${tomcat.username}"
                         password="${tomcat.password}"
                         path="/${webapp.name}"
                         failonerror="false"/>
</target>

<target name = "start-webapp">
    <catalina-start url="${tomcat.manager.url}"
                       username="${tomcat.username}"
                       password="${tomcat.password}"
                       path="/${webapp.name}"/>
</target>

<target name = "undeploy-webapp">
    <catalina-undeploy url="${tomcat.manager.url}"
                          username="${tomcat.username}"
                          password="${tomcat.password}"
                          path="/${webapp.name}"
                          failonerror="false"/>
</target>

<target name = "deploy-webapp">
    <catalina-deploy url="${tomcat.manager.url}"
                        username="${tomcat.username}"
                        password="${tomcat.password}"
                        path="/${webapp.name}"
                        war="file:${war.file}"/>
</target>

tomcat.manager.url is the URL where Tomcat manager lives. This is
another of the changes from Tomcat 6 to Tomcat 7. Usually this will
be: http://:8080/manager/text.

Tomcat.username and Tomcat.password are the user name and password
for Tomcat manager.

webapp.name is the name of the Tomcat application that you are
deploying.

war.file is the path the Tomcat application you are deploying’s WAR
file.