Can't run jenkins job jenkins using ant - jenkins

Question

I have some job in jenkins and i need start it using ant
ant run
Build.xml
<project name="jenkins-facade" default="run" basedir=".">
<taskdef resource="net/sf/antcontrib/antlib.xml" />
<description>
simple example build file
</description>
<property name="post.json.encoded" value=""/>
<target name="init">
<!-- Create the time stamp -->
<tstamp/>
<property name="post.json" value='{"parameter": [{"name":"foo_param", "value":"123"}]}'/>
<urlencode name="post.json.encoded" value="${post.json}" />
</target>
<target name="run" depends="init"
description="run jenkins job">
<post to = "http://jankhost:8080/job/Test/buildWithParameters/"
verbose="true" failonerror="true">
<prop name="token" value="1234567"/>
<prop name="json" value="${post.json.encoded}"/>
</post>
</target>
</project>
But when i run it i got 403 error.
I need to run a task on your behalf, and not by anonymous. How can i do this? How to pass through the ant username and token?
scr

Answer 1

I'm surprised/horrified that there's an Ant task to do HTTP POST requests, but looking at its documentation, it appears that there's no way to set HTTP request headers, which you would need for a Jenkins API request like this.
So as an alternative, you could try setting the username and API token in the URL — I don't know whether the Ant task supports this, but you could try http://<user>:<api_token>#jankhost:8080/job/Test/buildWithParameters/
Another possibility, according to any https://<jenkins>/job/<name>/api page may be to use the secret token mechanism:
Another alternative (but deprecated) is to configure the 'Trigger builds remotely' section in the job configuration. Then building or polling can be triggered by including a parameter called token in the request.
You can then include this secret token in the build URL itself. However, as you have security enabled, this will not work out-of-the-box — you will need to install the Build Token Root plugin, and follow the instructions there.