build.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns:ivy="antlib:org.apache.ivy.ant" name="ant_tomcat" default="all" basedir=".">

    <!-- include tomcat info -->
    <property file="tomcat.properties"/>

    <!-- ivy properties -->
    <property name="ivy.install.version" value="2.4.0" />
    <condition property="ivy.home" value="${env.IVY_HOME}">
        <isset property="env.IVY_HOME" />
    </condition>
    <property name="ivy.home" value="${user.home}/.ant" />
    <property name="ivy.jar.dir" value="${ivy.home}/lib" />
    <property name="ivy.jar.file" value="${ivy.jar.dir}/ivy.jar" />

    <!-- dirs -->
    <property name="src" value="src"/>
    <property name="web" value="web"/>
    <property name="web.build.dir" value="${web}/WEB-INF"/>
    <property name="web.build.dir.classes" value="${web.build.dir}/classes"/>
    <property name="web.xml" value="${web.build.dir}/web.xml"/>
    <property name="web.src.dir" value="${src}/main/java"/>
    <property name="war.file" value="simple.war"/>
    <property name="lib" value="lib"/>

    <!-- tomcat properties -->
    <property name="tomcat.context" value="${context}" />
    <property name="tomcat.home.dir" location="${catalina.home}" />
    <property name="tomcat.base.url" value="${base.url}" />
    <property name="tomcat.manager.url" value="${manager.url}" />
    <property name="tomcat.user.name" value="${manager.username}" />
    <property name="tomcat.user.password" value="${manager.password}" />

    <path id="tomcat.classpath">
        <!-- We need the Catalina jars for Tomcat -->
        <fileset dir="${tomcat.home.dir}/lib">
            <include name="catalina-ant.jar"/>
            <include name="tomcat-coyote.jar"/>
            <include name="tomcat-util.jar"/>
        </fileset>
        <fileset dir="${tomcat.home.dir}/bin">
            <include name="tomcat-juli.jar"/>
        </fileset>
    </path>

    <!-- Configure the custom Ant tasks for the Manager application -->
    <taskdef name="deploy"    classname="org.apache.catalina.ant.DeployTask" classpathref="tomcat.classpath"/>
    <taskdef name="list"      classname="org.apache.catalina.ant.ListTask" classpathref="tomcat.classpath"/>
    <taskdef name="reload"    classname="org.apache.catalina.ant.ReloadTask" classpathref="tomcat.classpath"/>
    <taskdef name="findleaks" classname="org.apache.catalina.ant.FindLeaksTask" classpathref="tomcat.classpath"/>
    <taskdef name="resources" classname="org.apache.catalina.ant.ResourcesTask" classpathref="tomcat.classpath"/>
    <taskdef name="start"     classname="org.apache.catalina.ant.StartTask" classpathref="tomcat.classpath"/>
    <taskdef name="stop"      classname="org.apache.catalina.ant.StopTask" classpathref="tomcat.classpath"/>
    <taskdef name="undeploy"  classname="org.apache.catalina.ant.UndeployTask" classpathref="tomcat.classpath"/>

    <path id="classpath.test">
        <pathelement location="${lib}/junit-4.12.jar"/>
        <pathelement location="${lib}/hamcrest-core-1.3.jar"/>
        <pathelement location="${web.build.dir.classes}"/>
    </path>

    <path id="classpath.servlet">
        <pathelement location="${lib}/javax.servlet-api-3.0.1.jar"/>
        <pathelement location="${web.build.dir.classes}"/>
    </path>

    <target name="download-ivy" unless="offline">
        <mkdir dir="${ivy.jar.dir}" />
        <!-- download Ivy from web site so that it can be used even without any special installation -->
        <get src="http://repo2.maven.org/maven2/org/apache/ivy/ivy/${ivy.install.version}/ivy-${ivy.install.version}.jar" dest="${ivy.jar.file}" usetimestamp="true" />
    </target>

    <target name="init-ivy" depends="download-ivy">
        <!-- try to load ivy here from ivy home, in case the user has not already dropped
                  it into ant's lib dir (note that the latter copy will always take precedence).
                  We will not fail as long as local lib dir exists (it may be empty) and
                  ivy is in at least one of ant's lib dir or the local lib dir. -->
        <path id="ivy.lib.path">
            <fileset dir="${ivy.jar.dir}" includes="*.jar" />
        </path>
        <taskdef resource="org/apache/ivy/ant/antlib.xml" uri="antlib:org.apache.ivy.ant" classpathref="ivy.lib.path" />
    </target>

    <target name="resolve-test" depends="init-ivy">
        <!-- see conf "test" in ivy.xml -->
        <ivy:retrieve conf="test"
                      type="jar,bundle"
                      sync="true"
                      pattern="${lib}/[module]-[revision].[ext]"/>
    </target>

    <target name="resolve-compile" depends="init-ivy">
        <!-- see conf "compile" in ivy.xml -->
        <ivy:retrieve conf="compile"
                      type="jar,bundle"
                      sync="true"
                      pattern="${lib}/[module]-[revision].[ext]"/>
    </target>

    <target name="compile" depends="resolve-compile">
        <mkdir dir="${web.build.dir.classes}"/>
        <javac srcdir="${web.src.dir}" destdir="${web.build.dir.classes}" includeantruntime="false" >
            <classpath refid="classpath.servlet"/>
        </javac>
    </target>

    <target name="war" depends="compile">
        <war destfile="${war.file}" webxml="${web.xml}">
            <fileset dir="${web}">
                <include name="**/*.*"/>
                <exclude name="${web.xml}" />
            </fileset>
            <classes dir="${web.build.dir.classes}"/>
        </war>
    </target>

    <target name="all" depends="war">
    </target>

    <target name="undeploy">
        <!-- TOMCAT undeploy-->
        <undeploy
                url="${tomcat.manager.url}"
                username="${tomcat.user.name}"
                password="${tomcat.user.password}"
                path="/${tomcat.context}"
        />
    </target>

    <target name="deploy" depends="clean, war">
        <!-- TOMCAT deploy-->
        <deploy
                url="${tomcat.manager.url}"
                username="${tomcat.user.name}"
                password="${tomcat.user.password}"
                path="/${tomcat.context}"
                localWar="file:${basedir}/${war.file}"
                update="true"
        />
    </target>

    <target name="clean" description="Clean classes dir and war file">
        <delete dir="${web.build.dir.classes}"/>
        <delete file="${war.file}"/>
    </target>
</project>