Call ant script through java file

[Anubhuti Bhargava]

Hi all,
I have a requirement to run the ant script through a button on jsp.
My question would be can i run the ant build.xml through java code if yes they how??
Thanks in advance
Regards

[Ta Ri Ki Sun]

I cant think of a better or other solution for this right now, but one way to do it would be to use Runtime.exec("cmd ant someTarget")

[Ta Ri Ki Sun]

oh yes, you could also look at calling "org.apache.tools.ant.Main %ANT_CMD_LINE_ARGS%" yourself.

[Anubhuti Bhargava]

Can you give a small example as it is not working.
regards

[Lasse Koskela]

The javadoc for org.apache.tools.ant.Main says the following:
If you integrating Ant into some other tool, this is not the class to use as an entry point. Please see the source code of this class to see how it manipulates the Ant project classes.
So, I guess you should grab the Ant source distribution and see for yourself. From a quick glance, I think this should be enough:

Object[] args = ... // the "command line" arguments
(new Main(args)).runBuild(null); // throws BuildException

[Ta Ri Ki Sun]

Originally posted by Lasse Koskela:
The javadoc for org.apache.tools.ant.Main says the following:
If you integrating Ant into some other tool, this is not the class to use as an entry point. Please see the source code of this class to see how it manipulates the Ant project classes.
So, I guess you should grab the Ant source distribution and see for yourself. From a quick glance, I think this should be enough:

Object[] args = ... // the "command line" arguments
(new Main(args)).runBuild(null); // throws BuildException

Lasse you have a good point, well spotted, I didn't look at those docs at all, anyhat, you've also overlooked a few things, one is that Main has protected access and also runBuild has private access, lastly I interpret that javadoc to mean dont use this class at all, look at the classes it manipulates, such as Project.
So Anubhuti, you now need to read some source code.

[Lasse Koskela]

Well spotted to you too