无法在Mac OS X上运行Ant？

Question

This is what I get after I installed Ant:

ant -v
Apache Ant(TM) version 1.9.4 compiled on April 29 2014
Trying the default build file: build.xml
Buildfile: build.xml does not exist!
Build failed

Debug option: (not clear to me)

ant --execdebug
exec "/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home/jre/bin/java" -classpath "/Users/sridhar/software_downloads/apache-ant-1.9.4/lib/ant-launcher.jar" -Dant.home="/Users/sridhar/software_downloads/apache-ant-1.9.4" -Dant.library.dir="/Users/sridhar/software_downloads/apache-ant-1.9.4/lib" org.apache.tools.ant.launch.Launcher -cp ""
Buildfile: build.xml does not exist!
Build failed

I have set the environment variable correctly:

echo $ANT_HOME 
/Users/software_downloads/apache-ant-1.9.4
echo $JAVA_HOME 
/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home

I followed this post:

sudo mkdir /usr/lib/java-1.7.0 /usr/share/java-1.7.0

I still get same error

I am using Mac OS X mavericks and Jdk1.7

Answer 1

You are in fact running Ant successfully. -v stands for verbose in this case, but I suspect you were thinking it stood for version. The error message just means you are missing the Ant script file in the current directory, default named build.xml .

Create a build script named build.xml . This one just prints the version of Ant. You would need to modify it to do something more interesting.

<project default="print-version">
    <target name="print-version">
        <echo>${ant.version}</echo>
    </target>
</project>

In the same directory as build.xml , run ant . You should see something like this printed:

print-version:
     [echo] Apache Ant(TM) version 1.8.4 compiled on November 8 2012

BUILD SUCCESSFUL

Note that Ant is a scripting language. You have installed the necessary Ant library JARs, but you still need to create your Ant scripts. A typical Ant script would compile, copy resources, package and JAR your product.

See here for a good tutorial: Hello World with Apache Ant